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Public Information Statement
National Weather Service Denver/Boulder CO
645 PM MDT SAT JUL 13 2024

...This week in metro Denver weather history...

1-18  In 1874...a streak of 18 consecutive days of 90 degrees...from
        the 1st to the 18th...tied for second with another streak
        that was later set in the summer of 1901. The record of 24
        consecutive days was established in the summer of 2008.
6-23  In 1901...from the 6th to the 23rd...a streak of 18 consecutive
        days of 90 degrees tied for second with another streak set
        in the summer of 1874. The record of 24 consecutive days was
        established in the summer of 2008.
7-25  In 1934...a streak of 15 consecutive days of 90 degrees...from the
        7th to the 25th...ranked 5th on the list of hot streaks.  The
        record of 24 consecutive days was established in the summer of
        2008.
13-5  In 2008...a streak of 24 consecutive days of 90 degrees...from
        July 13th to August 5th...shattered the previous record of 18
        consecutive days established in 1901 and 1874. Ironically...
        no new single day record high temperatures were set in the
        month of July. In August however...a record of 104 degrees
        was set on the 1st...and another record of 103 degrees was
        set on the 2nd. In addition...a record low min of 70 degrees
        was set on August 2nd.
14    In 1878...the temperature reached a high of 100 degrees in
        downtown Denver.
      In 1906...a thunderstorm produced north winds sustained to
        52 mph and 0.53 inch of rain in 10 minutes.
      In 1912...a heavy thunderstorm cloudburst in the late afternoon
        combined with a similar storm to the south of the city to
        produce widespread flooding on Cherry Creek in downtown
        Denver...which resulted in two deaths and several injuries.
        The flooding was the worst since 1864 and covered around 3
        square miles of lower downtown.  Bridges along Cherry Creek
        were washed out and water lapped at the floor of the Broadway
        bridge over the South Platte River...causing authorities to
        declare it unsafe except for pedestrians.  By nightfall...
        Union Depot was under 2 to 3 feet of water...and railroad and
        street car traffic was stalled.  Those forced from their
        homes by the surging flood waters took refuge in the Denver
        Auditorium.  The flood waters caused great damage to the
        sewerage system...parkways...bridges and residences and
        commercial warehouses near Cherry Creek in the wholesale
        district.  Flood damage was estimated at several million
        dollars.  Heavy thunderstorm rainfall of 2.00 inches...of
        which nearly 1.75 inch fell in 30 minutes in central Denver...
        was accompanied by severe thunderstorm winds sustained to 55
        mph with gusts as high as 74 mph.
      In 1933...thunderstorm rainfall was only 0.01 inch...but
        northwest winds sustained to 37 mph with gusts to 47 mph
        produced a dust storm for about 10 minutes during the
        late afternoon.
      In 1967...heavy rain flooded areas of north and west metro
        Denver...and high water closed street intersections in the
        city.  Crops were damaged...and 200 chickens drowned by
        flooding northwest of Denver where farm buildings and
        irrigation facilities were also damaged.
      In 1969...a thunderstorm wind gust to 51 mph was recorded at
        Stapleton International Airport.
      In 1975...heavy rains caused locally heavy flash flooding along
        Niver Creek south of Thornton and in other parts of north
        metro Denver.  Over 40 thousand dollars in damage to public
        property was reported...and numerous homes and yards were
        damaged.
      In 1986...thunderstorm winds blew down a power line in west-
        central Jefferson County.  The storm...as it moved into
        Denver...snapped tree limbs and damaged a fence near
        Washington Park.  Wind gusts in the area were estimated at
        80 to 85 mph.
      In 1990...thunderstorm wind gusts to 58 mph were recorded at
        Buckley Field in Aurora.  No damage was reported.  Winds
        gusted to 44 mph at Stapleton International Airport.
      In 1993...a severe thunderstorm moved across southern sections
        of metro Denver.  Dime size hail fell in Lakewood...and hail
        up to one inch diameter was measured at Cherry Creek
        Reservoir.  Later in the afternoon...hail to one inch
        diameter fell in Golden and Arvada.
      In 1994...hail to 1 1/4 inches in diameter fell north of
        Bennett.
      In 1998...dry microburst winds estimated to 70 mph snapped
        tree branches up to 4 inches in diameter in Brighton
        where some road signs were twisted and blown down.  At
        Denver International Airport...dry microburst winds gusted
        to 61 mph.
      In 1995...thunderstorm winds gusted to 62 mph near Strasburg.
      In 2001...a severe thunderstorm dumped hail to 3/4 inch in
        diameter in the foothills about 10 miles northwest of
        Golden.
      In 2011...severe thunderstorms in the Denver metropolitan
        area produced very heavy rain...large hail and damaging
        winds. The strong winds toppled a few trees and the heavy
        rain caused street flooding and minor flash flooding.
        Several cars were stranded at the intersection of Santa Fe
        Drive and Oxford...and near Broadway and U.S. Highway 285.
        A 16-yr old teenager was seriously injured when he tried
        to retrieve a ball along the banks of West Toll Gate Creek.
        He was pulled from the swollen creek and died several days
        later. Hail up to 1 inch in diameter was reported
        around the area. The thunderstorms also produced frequent
        lightning. One strike sparked a fire at Aspen Academy...a
        private school in Greenwood Village. Most of the damage
        was confined to the roof and attic. In Englewood...a
        40-ft tree was blown into a house and knocked down some
        power lines.  At Denver International Airport...a severe
        thunderstorm produced sustained winds of 47 mph and a
        peak wind gust to 68 mph.
      In 2019...a Denver man was killed and his wife injured after
        he was struck by lightning when they were hiking near the
        Bear Peak West Ridge Trail. The man was likely hit from a
        direct lightning strike to his upper body. His wife was
        not directly hit...but injured by the electrical current
        from the strike that hit her husband.
14-15 In 1985...from the 14th into the 15th...thunderstorms dumped
        heavy rain and hail at numerous locations along the Front
        Range from Denver north.  Some of the heaviest rain fell
        in northern and western suburbs of Denver.  Up to 2.6
        inches of rain drenched Arvada...and Thornton was soaked
        with 2 inches in 45 minutes.  At least 5 homes in Arvada
        suffered extensive damage from water and mud...and many
        streets and basements were flooded.  In southern Jefferson
        County...11 homes were struck by lightning.
15    In 1879...a terrific hailstorm occurred in the vicinity of
        of Buffalo Station on the South Park Railroad in the
        South Platte River canyon about 39 miles south of Denver.
        Stones as large as hen`s eggs fell thick and fast and broke
        nearly every pane of glass in the windows of the building.
        A "waterspout" or cloudburst caused much loss of property
        from flash flooding on a nearby gulch.  The torrent of
        water caused a deafening roar as it uprooted trees and
        carried huge boulders and other debris.  It struck the
        house and sawmill simultaneously and carried them away
        like straws...leaving little behind.  The water continued
        to rush down the gulch for several hours.  Serious damage
        was done to the South Park Railroad.  The track and
        roadbed were destroyed for several miles.  At about the
        same time...heavy rains in the vicinity of the headwaters
        of Cherry Creek produced a rapid rise in the creek...which
        drowned a few head of cattle and washed away two footbridges
        and some fences.  Only 0.10 inch of rainfall was recorded in
        Denver.
      In 1896...a thundestorm produced sustained southwest winds to
        40 mph with gusts to 46 mph.
      In 1902...the temperature reached a high of 100 degrees in
        downtown Denver...which was a record maximum for the date.
      In 1929...a thunderstorm did considerable damage to property
        in the eastern portion of the city.  Heavy hail ranging
        in size from 1/4 to 3/4 inch in diameter...severe lightning...
        and high winds accompanied the heavy rain.  Basements were
        flooded...and streets were impassable in places for several
        hours due to the heavy rainfall.  Lightning damaged several
        telephone poles.  Hail did extensive damage to gardens and
        flowers.  The hail was up to a foot deep in places.  There
        was no estimate of damage from the storm.  A thunderstorm
        produced only a trace of rain and east winds to 24 mph in
        downtown Denver.
      In 1959...thunderstorm rain totaled 0.41 inch in 8 minutes
        and winds gusted to an estimated 50 mph near downtown
        Aurora where half inch diameter hail was also reported.
        After the storm moved to the east...complete double rainbows
        were observed from the Weather Bureau office at Stapleton
        Airport.
      In 1962...hail pelted the area in Adams County around Henderson
        and Brighton...causing extensive damage to corn...grain...
        beets...and row crops.  Crop damage was estimated at 250
        thousand dollars.
      In 1963...a man received severe burns when struck by lightning
        while painting a building in south Denver.
      In 1965...a State Patrolman sighted a tornado near Bennett.  It
        touched down over open ground...but caused no damage.
      In 1967...heavy rains flooded streets and underpasses in south
        Denver.  Heavy rain and minor wind damage were reported in
        Wheat Ridge...Aurora...Englewood...and Littleton.  Basements
        were flooded and power disrupted.  The clouds and rain
        resulted in a high temperature of only 72 degrees...which
        was a record low maximum for the date.
      In 1974...a severe lightning storm damaged several homes and
        caused a number of power outages in both Denver and western
        Arapahoe counties.
      In 1975...lightning killed a girl west of Boulder.
      In 1982...winds gusted to 60 mph at Stapleton International
        Airport...and strong winds blew down walls at a construction
        site in Aurora where a nearby tree was uprooted.
      In 1985...0.79 inch of rain fell in 30 minutes at Castle
        Rock.  Much of the town lost power when lightning struck
        the town`s transformer.
      In 1992...a man was struck by lightning while horseback riding
        near Castle Rock.  Two people were struck by lightning near
        Highlands Ranch in south metro Denver.  A man was struck by
        lightning while riding in the back of a pick-up truck in
        Franktown.  All received minor injuries.  Strong
        thunderstorms moved through east metro Denver...producing
        large hail and flash flooding.  Hail up to 1 1/4 inches in
        diameter fell near Buckley Air National Guard Base.
        Rainfall of 1 to 3 inches fell in Aurora in less than an
        hour...leaving water up to 18 inches deep in some areas.
        Thunderstorm rainfall was measured at 0.97 inch at
        Stapleton International Airport...where 3/8th inch diameter
        hail fell and south winds gusted to 44 mph.
      In 1993...dime size hail fell in Golden.  National Weather
        Service observers at Stapleton International Airport
        sighted a small rope-like funnel overhead for about 3
        minutes before it dissipated.
      In 1994...a small...short-lived tornado caused damage to a house
        under construction in Parker.
      In 1995...thunderstorm winds of unknown strength downed trees
        and branches...damaging a porch and nearby cars in Denver.
      In 1998...hail to 7/8 inch in diameter fell near Keenesburg.
      In 2000...this date marked the end of a near record hot streak
        for metro Denver.  The high temperature at Denver
        International Airport equaled or exceeded the 90-degree
        mark for 17 consecutive days...from June 29th.  This was
        one day short of equaling the all time record.  The
        record of 18 consecutive days was set in two different
        years...July 1st-18th...1874 and July 6th-23rd...1901.
      In 2005...severe thunderstorms produced large hail over
        southeast metro Denver.  Hail as large as 1.75 inches
        in diameter fell in southwest Aurora along with 7/8 inch
        hail in Centennial.  Hail to 3/4 inch in diameter was
        measured near Centennial Airport and near Watkins.
      In 2015...A severe thunderstorm produced a peak wind gust to
        60 mph from the northwest at Denver International Airport.
        In addition...0.06 inches of rainfall was also observed.
      In 2016...large hail ranging in size from 1 to 2 inches in
        diameter struck Aurora...Castle Rock...Centennial...Greenwood
        Village and southeast Denver. The hail shattered
        windshields and caused extensive damage to vehicles.
15-16 In 2006...a brief mid July hot spell resulted in two 100
        plus degree high temperatures and two daily maximum
        temperature records.  The high temperature climbed to
        101 degrees on the 15th and 103 degrees on the 16th
        at Denver International Airport.
16    In 1911...thunderstorm winds were sustained to 44 mph from the
        northwest.
      In 1959...a thunderstorm produced 3/8 inch diameter hail and
        a wind gust to 60 mph at Stapleton Airport.
      In 1972...two tornadoes were sighted by the public to the
        southeast of Aurora.  No damage was reported.
      In 1978...a thunderstorm wind gust to 52 mph was recorded at
        Stapleton International Airport.
      In 1980...a severe thunderstorm ripped through metro Denver...
        producing torrential rain...large hail...and strong winds.  In
        Aurora...winds gusted to 65 mph with hail up to 1 1/2 inches
        in diameter and half an inch of rain in just 10 minutes.
        Stapleton International Airport was closed for an hour.
        Large hail also fell in southeast Denver...Lakewood...Parker...
        and Castle Rock.  Up to 1 1/2 inches of rain fell in just 40
        minutes.  Heavy rains in Wheat Ridge flooded a shopping
        center...breaking windows and doors...while causing 100
        thousand dollars in damage.  Some roofs and windows were
        damaged throughout metro Denver.  At Stapleton International
        Airport where west winds gusted to 49 mph...1/4 inch hail
        and 0.77 inch of rain fell.
      In 1983...severe thunderstorms dumped large hail over much of
        metro Denver.  Hail to 3/4 inch in diameter fell in Littleton
        and Northglenn...with 3/4 to 1 inch hail in Arvada...1 to 1 1/2
        inch hail in extreme northwest Denver...1 3/4 inch hail in
        Lakewood...1 1/2 inch hail in south Arvada and just northeast
        of Aurora...and 1 5/8 inch hail on Green Mountain.
      In 1994...spotters reported a brief tornado touchdown in an
        open field just north of Fort Lupton.  No damage or injuries
        were reported.
      In 2000...very moist and unstable weather conditions...along
        with low level upslope flow during the late afternoon and
        evening...combined to produce heavy thunderstorm rainfall...
        which caused urban and small stream flooding across metro
        Denver.  Rainfall amounts generally ranged from 1 to 3 inches
        with the heaviest rainfall occurring during the evening hours.
        Two miles east of White Ranch in northern Jefferson County...
        an automated rain gage measured 3.86 inches of rain.  Since
        the rain fell in a relatively open area...no flood damage
        was reported.  However...in Greenwood Village near the
        intersection of Peoria and Belleview...the streets were
        closed for several hours with as much as 2 feet of standing
        water covering the roadways.  Two campers near Mt. Evans
        were injured by lightning and stranded overnight by the
        inclement weather.  Both received minor injuries.
      In 2003...the high temperature of 101 degrees was a record
        maximum temperature for the date.
      In 2004...locally heavy rainfall of unknown amount caused
        parts of the Virginia Canyon Road near Idaho Springs to
        wash out.  The road had to be closed temporarily.
      In 2005...the temperature climbed to a high of 102 degrees
        at Denver International Airport.  This was a new record
        maximum temperature for the date at the time.
16-18 In 1997...an extended hot spell resulted in 3 temperature
        records being set.  The maximum temperature reached 98
        degrees on each of the days...setting records on the 16th
        and 18th.  The low temperature of 71 degrees on the 17th
        was a record high minimum for the date.  The high
        temperature reached 100 degrees on the 17th at the site
        of the former Stapleton International Airport.
17    In 1872...the U.S. Army Signal Service weather observer
        recorded snowfall during the early morning hours in the
        hand written daily weather journal:  "Rain commenced at
        1:30 A.M. changing about 3 A.M. to snow & in about half
        an hour to rain again; it continued until 6 A.M."  This
        is the only recorded occurrence of snowfall in Denver in
        July...but this report is not included in the "official"
        station snowfall records...which did not begin in Denver
        until January 1...1882.  The low temperature on this
        morning was 45 degrees...which is sufficiently cold for
        the occurrence of light stratiform snowfall.
      In 1918...a thunderstorm produced hail to an inch in depth
        on the ground.  The stones varied in size from a small
        cherry stone to nearly 1/2 inch in diameter.  Not much
        permanent damage was done to crops.  Precipitation
        totaled 0.40 inch...and northeast winds were sustained
        to 25 mph with gusts to 28 mph.
      In 1971...the temperature reached a high of 101 degrees at
        Stapleton International Airport.
      In 1983...3/4 inch diameter hail fell at Lafayette...while
        golf ball size hail pelted Brighton and Northglenn where
        funnel clouds were also sighted.
      In 1986...1 1/2 inches of rain fell in an hour and 15 minutes
        in southeastern Aurora.  Thunderstorm rainfall totaled
        0.89 inches at Stapleton International Airport.
      In 1987...a small tornado was sighted near Watkins...in the
        vicinity of Front Range Airport.
      In 1997...lightning ignited an oil well tank holding 10
        thousand gallons of oil...16 miles northwest of Bennett.
        About 200 acres of grassland burned before the fire could
        be extinguished.  A dry microburst produced a wind gust to
        52 mph at Denver International Airport.
      In 2000...an estimated 2 inches of rain fell in less than an
        hour...causing two secondary roads in Buck and Miller gulches
        in the Hi Meadows fire burn area to wash out.  Water
        also covered Jefferson County Road 68 which connects to
        Bailey.  Homeowners in Pine Valley Estates attempted to
        divert some of the runoff by piling stacks of hay on the
        hillside above their homes.  Torrential rainfall...up to
        3.50 inches an hour...caused flash flooding along Whiskey
        Gulch near Elizabeth.  Several roads were washed out and
        basements flooded during the storm.  Along County Road 13...
        about 6 miles north-northwest of Elizabeth...rushing water
        washed away a 15-foot section of the road.  The floodwaters
        forced debris and mud into four huge culverts...sending water
        over the road.  At Denver International Airport...an United
        Airlines ground crew worker was struck by lightning as she
        was loading a Boeing 747 jumbo jet.  The woman was injured
        when lightning either hit the jet or the loading equipment
        that she was working near.  The 25-year-old woman received
        only minor injuries.
      In 2006...outflow from severe thunderstorms to the southeast
        of metro Denver produced southeast sustained winds to 35
        mph with gusts as high as 52 mph at Denver International
        Airport during the late evening.
      In 2011...a deluge of heavy rain occurred in and around
        Nederland when the storm dumped nearly 2 inches of rain in
        30 minutes. The heavy rainfall washed out hillsides and
        dirt roads. In Nederland...a culvert became blocked with
        debris and forced the water to spread into a nearby
        bookstore. The rainfall also damaged several residential
        roads in the Sunnyside Subdivision and Navajo Road became
        impassable. Several homes suffered flood damage as the
        runoff from a nearby Beaver Creek jumped its banks and
        flooded garages...living rooms and bedrooms of nearby
        houses.
      In 2016...a severe thunderstorm produced hail up to 1 inch
        in diameter near Buckley Air Force Base.
18    In 1874...the temperature climbed to 90 degrees or more for the
        18th consecutive day...setting a record.  The record was
        equaled from July 6th through the 23rd in 1901.
      In 1902...a thunderstorm produced northwest winds sustained to
        45 mph with gusts to 48 mph along with rain and hail.
        Total precipitation was 0.53 inch.
      In 1911...a shower produced north winds sustained to 44 mph.
      In 1958...1 1/2 inch diameter hail fell 9 miles west-southwest
        of Stapleton Airport.
      In 1981...a thunderstorm bombed Evergreen with about 2 inches
        of rain in 45 minutes.  A heavy hailstorm left 5 to 7 inches
        of hail on the ground in some places and stopped the Colorado
        Open Golf Tournament at Hiwan.
      In 1985...over 2 inches of rain doused the southwest suburbs
        of Denver.  Street flooding occurred in the Montbello area
        of northeast Denver.
      In 1992...nickel size hail fell across central Douglas County
        near Castle Rock and Sedalia.  One inch diameter hail fell
        in Castle Rock.
      In 1993...thunderstorm winds gusted to 60 mph at Strasburg
        east of Denver.
      In 2004...heavy thunderstorm rainfall caused flooding over
        parts of the Virginia Canyon Road near Idaho Springs.
        Several sections of the roadway were washed out.  The
        road was closed temporarily for repairs.
18-19 In 2003...from the 18th into the 19th...heavy rain producing
        thunderstorms caused flash flooding across southern metro
        Denver.  Automated rain gages measured 2 to 3 inches of
        rain in less than an hour.  The heavy rainfall caused many
        intersections and underpasses to flood...stranding motorists.
        Sections of I-25 and I-225 were closed due to the high water.
18-2  In 1987...from July 18th to August 2nd...a streak of 16
        consecutive days of 90 degrees ranked 4th on the list of hot
        streaks.  The record of 24 consecutive days was established
        in the summer of 2008.
19    In 1875...recent heavy rains produced high waters on many
        creeks and rivers in the area...which threatened the
        destruction of property at some locations.  Cherry Creek
        in the city was running the highest in 10 years.  Heavy
        rain in the mining regions over the last 2 days resulted
        in water running "everywhere" and the suspension of some
        work.
      In 1881...a thunderstorm passing across the city produced
        lightning with no rain.  A woman was seriously injured
        when struck by lightning several blocks from the weather
        office in downtown Denver.
      In 1934...the temperature reached a high of 100 degrees in
        downtown Denver.
      In 1965...hail...rain...and lightning hit west metro Denver.
        Hail stones as large as 1 1/2 inches in diameter accumulated
        to a depth of 2 inches in Evergreen where 2.95 inches of
        rain in 2 hours caused some flooding in the business section
        of the town.  Lightning caused some power outages.
      In 1973...two funnel clouds were observed 5 miles southeast of
        Littleton.  The same funnel clouds were observed for 20
        minutes...5 miles west and 5 miles west-southwest of Arapahoe
        County Airport...now Centennial Airport.
      In 1975...lightning injured a man in Denver and caused power
        outages in Aurora...Lakewood...Westminster...and west Denver.
      In 1984...strong thunderstorm winds gusting to 45 mph shattered
        7 large plate glass windows at Stapleton International
        Airport.
      In 1985...a tornado touched down in the Surrey Ridge area of
        northern Douglas County...just west of I-25.  Ten homes were
        damaged; one under construction was nearly destroyed.  Two
        vehicles were thrown off I-25 injuring three people.  A
        pick-up truck was thrown 50 feet by the twister.  In
        addition...a cluster of severe thunderstorms pounded all
        of metro Denver with torrential rain...hail...and wind.  The
        heaviest rain fell in Aurora where one location reported
        2.37 inches in just 40 minutes.  One location in northeast
        Aurora received a total of 4.30 inches from the storm.
        There was extensive street and basement flooding...and a
        number of roads were damaged or washed out.  An Aurora boy
        suffered minor injuries when he was washed into a drainage
        ditch.  Golf ball size hail in Aurora piled up to 5 inches
        deep.  An inch of rain fell in 20 minutes at Stapleton
        International Airport...closing it to air traffic for an
        hour.  Up to 1 1/2 inches of rain fell in just 15 minutes
        over central Denver with the high water closing I-25.  The
        water was so deep on the freeway...that one vehicle was
        completely submerged and people were diving into the water
        from the freeway overpass.  Three homes in Littleton were
        damaged by lightning.  Wind blew out several windows from
        a high rise apartment building in southeast Denver.
        Rainfall totaled 1.51 inches at Stapleton International
        Airport.
      In 1997...torrential rain and damaging hail pummeled eastern
        sections of metro Denver.  Hail up to 1 1/4 inches in
        diameter fell at the National Weather Service office on the
        site of the former Stapleton International Airport.  The
        hail continued for about 15 minutes and accumulated to a
        depth of 2 to 3 inches...causing extensive damage to cars in
        the area.  Heavy rainfall totaled 3.83 inches in about an
        hour from the nearly stationary thunderstorm.  Numerous cars
        stalled along I-70...and several homes were flooded in east
        Denver.  The roof of a building collapsed under the weight
        of the water.  The next day several "fatalities" were
        discovered near the National Weather Service office; two
        prairie dogs were found dead along with three rabbits that
        either drowned or were killed by the large hail.
      In 1999...lightning struck two residences in Littleton...but
        caused only minor damage.  Lightning triggered a fire at a
        residence in Cherry Hills Village.  A small portion of the
        roof and ceiling were damaged before the fire could be
        extinguished.
      In 2000...hail as large as 1 1/4 inches in diameter fell near
        Roggen northeast of Denver.
      In 2004...heavy rainfall caused flooding on the Virginia Canyon
        Road near Idaho Springs...which had to be closed for repairs.
      In 2006...the temperature climbed to a high of 100 degrees.  The
        high temperature was not a record maximum for the date.
     In 2007...a severe thunderstorm produced large hail...up to 1
        inch in diameter...about 6 miles north of Northglenn.
     In 2016...two men at the Indian Tree Golf Course in Arvada were
        struck by lightning when they sought shelter from a rapidly
        developing thunderstorm under a tree. One man died from his
        injuries while the other suffered minor injuries. Very heavy
        rainfall was observed across central and southern parts of
        Denver. The storm dropped around 1.5 inches of rainfall in 30
        minutes and caused minor street flooding.  Nickel size hail
        was reported west of Pine in central Jefferson County.
19-23 In 2005...the high temperature climbed above 100 degrees on
        each of the 5 days with readings of 101 on the 19th...105 on
        the 20th...104 on the 21st...and 102 on both the 22nd and 23rd.
        A new record maximum temperature for the month of July of 105
        degrees was set on the 20th...which also equaled the all time
        record maximum for Denver of 105 degrees first set on August
        8th in 1878.  Daily maximum temperature records were set on
        each day...and the 5 day period equaled the record for the
        most consecutive days of 100 degrees or more first set from
        July 4th through 8th in 1989.  The intense heat resulted in
        a high use of electricity for cooling purposes.  The demand
        for electric power exceeded the supply and rolling black-outs...
        each lasting about an hour...were scheduled across metro Denver
        during the afternoons and early evenings.
20    In 1898...an apparent thunderstorm produced sustained northwest
        winds to 45 mph with gusts to 51 mph.
      In 1939...the high temperature reached 102 degrees in downtown
        Denver.  This was the highest temperature recorded since
        August 8...1878...a period of 61 years...and the third highest
        temperature of record at the time.  Six miles to the east...
        at Denver Municipal Airport...the maximum temperature reached
        104 degrees.  A dry period during mid-July...combined with low
        relative humidities...resulted in an unusually large number
        of forest fires in the mountains west of Denver.
      In 1941...an afternoon thunderstorm caused two lightning
        deaths.  The men were struck by lightning near the Denver
        Airport.
      In 1951...a thunderstorm wind gust to 54 mph was recorded at
        Stapleton Airport.
      In 1965...heavy rain west of Denver damaged roads and bridges.
        Two bridges in Golden were washed out.  Lightning in Denver
        caused some power failures and fires...mostly in the northeast
        section of the city.  Heavy rain caused street flooding in
        the City of Denver.  Hail as large as 1/2 inch in diameter
        and 0.40 inch of rain in 5 minutes were measured at
        Stapleton International Airport where precipitation totaled
        1.09 inches.  Lightning damaged a house in Littleton...and
        caused a power outage in Idaho Springs.
      In 1973...lightning damage was reported west of Arvada.
      In 1975...heavy rains caused flash flooding across metro
        Denver...resulting in the closing of several streets and
        damage to numerous homes and businesses.  Hail 1/2 to 3/4
        inch in diameter was reported.
      In 1976...heavy thunderstorms caused flooding of streets in
        southeast Denver and western Arapahoe counties.  A total of
        3.35 inches of rain was measured at Kassler southwest of
        Littleton.
      In 1978...a girl was injured by lightning at a country club
        southwest of Denver.
      In 1984...heavy rain was reported just east of Buckley Field in
        Aurora where 1.15 inches fell in just 45 minutes.
      In 1986...thunderstorms dumped heavy rain across metro Denver
        causing extensive street flooding...power outages...and
        basement flooding.  The greatest recorded rainfall was 4.39
        inches in Lakewood.  In extreme northwest Denver...2.29
        inches of rain fell in just 20 minutes.  Arvada was drenched
        with 2.60 inches of rain...and over an inch fell in southeast
        Denver and adjacent sections of Aurora.
      In 1990...heavy thunderstorm rains caused flash flooding in
        sections of Littleton where 1.20 inches of rain fell in
        less than 30 minutes.  The deluge caused Dry Creek to jump
        its banks...causing damage to residential streets...curbs...and
        sidewalks.  Nearly 100 vehicles were stranded for a time in
        fender-deep water when sewers and drainage ditches became
        choked with debris.  The heavy runoff submerged many
        Littleton streets and intersections.
      In 1992...strong thunderstorms moved slowly through east metro
        Denver...producing rainfall up to 2.50 inches in a short time.
        Weather spotters reported 0.75 to 1.00 inch of rain in less
        than 30 minutes.  Many areas of southeast Denver were
        flooded...including I-25 where up to 6 feet of water
        filled some underpasses.  Hail to 3/4 inch in diameter
        fell in Aurora.
      In 1995...a tornado touched down briefly in an open field
        near Strasburg.  Thunderstorm winds gusted to 58 mph at
        Centennial Airport.
      In 1996...strong thunderstorm winds damaged the building of
        a telephone installation company in the City of Denver.
      In 1998...the high temperature reached 100 degrees at
        Denver International Airport.
      In 2006...heavy rainfall in the Overland Wildfire burn area
        caused minor flash flooding in Jamestown.  The roads behind
        the Jamestown Fire Hall were washed out...when a culvert was
        blocked by debris.  A rockslide was also reported in town.
      In 2009...a severe thunderstorm produced damaging winds...large
        hail and very heavy rain across the western and southern
        suburbs of Denver.  Widespread damage was observed in the
        cities of Arvada...Lakewood and Wheat Ridge.  The intense
        straightline winds were the result of a wet microburst which
        downed hundreds of trees and snapped power poles.  Wind
        gusts to 80 mph were reported along with hail up to 1 3/4
        inches in diameter.  The combination of wind and hail
        caused widespread damage to homes and vehicles.  The damage
        claim estimates totaled 350 million dollars; about 32900
        claims were filed for homes...while another 19500 claims
        were filed for vehicles.  As many as 90000 homes and
        businesses were left without power.  In some areas it took
        up to 3 days to completely restore electrical service.
        Minor injuries were reported from broken glass during the
        storm...but no one was hospitalized.  The storm crippled the
        computers at the Colorado Crime Information Center in
        Lakewood for nearly 3 hours.  One weak tornado touched down
        near Parker but did no damage.  In southern Weld County...
        severe thunderstorms produced widepread damage over 150
        square miles of farmland.  In all...400 farms were directly
        impacted by severe weather.  Damage to crops alone was
        estimated to 3 million dollars.  At Denver International
        Airport...a peak wind gust to 48 mph was observed from the
        northeast.  In addition...1.01 inches was measured at the
        airport.
      In 2013...severe thunderstorms produced large hail...ranging in
        size from nickel to golfball...across portions of Arapahoe...
        Denver...Elbert and Weld Counties. In addition...damaging wind
        gusts to 60 mph snapped large tree branches in Thornton and
        3 miles west-southwest of Buckley AFB.  In Bennett...hail up
        to 1 1/2 inches in diameter was reported. At Denver
        International Airport...a peak wind gust to 58 mph was
        recorded from the northeast.
      In 2017...a severe thunderstorm north of Elizabeth produced hail
        up to 1 inch in diameter.  The hail completely covered the
        ground.
      In 2019...a severe thunderstorm produced a wind gust to 60 mph
        at Centennial Airport. A thunderstorms produced a flash flood
        in southern Jefferson and southwest Denver counties. The
        flooding was particularly bad on southbound I-25 near 6th
        Avenue. One woman was rescued by a passerby in Lakewood when
        floodwaters began pouring into her car near Casa Bonita. Standing
        water up to 3 feet deep was observed on other streets in Lakewood.
        A homeless woman drowned near West 12th Avenue and Miller
        Street when she was swept away in the floodwaters. Her body
        was recovered the following day.
20-23 In 1961...from the 20th to the 23rd...unusually cool weather for
        July resulted in several temperature records.  Record
        minimum temperatures were set or equaled on each day with
        readings of 51...51...49 and 49 degrees.  High temperature of
        only 64 degrees on the 21st was a record low maximum for the
        date.
20-25 In 1965...from the 20th to the 25th...heavy showers and
        thunderstorms doused metro Denver with significant rain each
        day.  Rainfall for the six days totaled 5.16 inches at
        Stapleton International Airport. Massive rainfall occurred
        on the 20th...21st...and 25th...flooding streets and basements
        and causing streams to overflow.  The heaviest rainfall...
        2.05 inches...at Stapleton International Airport occurred on
        the 25th.

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