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Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MST THU NOV 14 2024

...Today in metro Denver weather history...

10-14 In 2014...an Arctic cold front on the 10th...associated with a
        strong storm system over the northern Rockies blasted into
        northeast Colorado.  The temperature in Denver plummeted
        from the high of 64 degrees at 4:37 pm to 34 degrees by
        5:53 pm.  The temperatures continued to fall and dropped
        into the teens by early evening.  The Arctic airmass
        remained entrenched over the region through the morning of
        the 14th...with the high temperatures failing to reach
        the teens from the 11th through the 13th.  This was the first
        time since records have been taken in Denver...dating back to
        1872...that there were three consecutive days with the
        maximum temperatures remained below 20 degrees in the month
        of November.  In addition to the frigid temperatures...0.1
        inch of snowfall was observed on 11th at Denver International
        Airport...which marked the first measureable snowfall for the
        season. An additional 2.2 inches of snowfall was measured on
        the 12th.  Several temperature records were broken.  A
        record low max of 16 degrees on the 11th broke the previous
        record of 19 set back in 1916.  A record low max of 6 degrees
        on the 12th broke the previous record of 9 degrees...also set
        in 1916.  The record low of -13 on the 12th...shattered the
        previous record of -4 degrees set back in 1872.  Even more
        impressive...the record low of -14 degrees on the 13th broke
        the previous record of -3 degrees set back in 1916. The
        sudden drop in temperatures on the 10th...followed by several
        days of sub-freezing temperatures chilled trees to the core.
        The record drop in temperatures...preceded by mild fall
        temperatures...damaged or killed scores of trees across the
        I-25 Corridor and northeast plains. At the time...the trees
        were not finished with the hardening process that enables
        them to withstand winter weather. Many were instantly flash-
        frozen...and some would not show signs of damage until spring
        of 2015. Of the 2.2 million trees in the city of Denver
        alone...tens of thousands were killed from the November frost.
        Denver estimated a citywide loss of more than 10 million
        dollars.
11-14 In 1970...heavy snowfall totaled 7.2 inches at Stapleton
        International Airport where northeast winds gusted
        to 22 mph on the 12th and 14th.  Most of the snow...
        4.2 inches...fell on the 12th.
12-15 In 1909...light snowfall totaled 6.7 inches in downtown
        Denver over the 4 days.  This was the first measurable
        snowfall of the season.  Northeast winds were sustained
        to 15 mph on the 12th.
13-14 In 1925...heavy post-frontal snowfall totaled 6.4 inches
        overnight in downtown Denver.  Northwest winds were
        sustained to 27 mph with gusts to 29 mph on the 13th.
      In 1974...northwest winds gusted to 52 mph at Stapleton
        International Airport...warming the temperature to 60
        degrees shortly after midnight on the 13th.  A cold front
        cooled temperatures into the 20`s by late morning and
        produced snowfall of 3.7 inches.  The low temperature
        dipped to 14 degrees on the 14th.
      In 1993...an upper level low pressure system combined with a
        weak but moist upslope flow to produce heavy snow across
        metro Denver.  Snowfall amounts averaged 6 to 8 inches with
        up to 16 inches in the foothills at the Eldora Ski Area.
        Snowfall totaled 6.0 inches at Stapleton International
        Airport where north winds gusted to only 20 mph on the
        14th.  Most of the snow fell on the 14th.
      In 1994...heavy snow developed rapidly along the Front Range
        urban corridor with the heaviest snow over northwest metro
        Denver.  Sixteen to 18 inches of snow fell in Boulder...
        Lafayette...and Louisville.  This was the second heavy
        snowfall over northwest metro Denver in 10 days.  Eleven
        to 14 inches of snow were measured from Longmont southward
        into Aurora.  Snowfall totaled 12.1 inches at Stapleton
        International Airport where northeast winds gusted to 29
        mph on the 13th.  Most of the snow...9.0 inches...fell on the
        14th.
      In 1997...heavy snow fell overnight in portions of Jefferson
        and Boulder counties.  About 5.5 inches of snow were
        reported in Boulder...while 4 inches were measured 12 miles
        southwest of Morrison and 6 miles southwest of Golden.
        Snowfall totaled only 1.8 inches at the site of the former
        Stapleton International Airport.  Northeast winds gusted
        to 26 mph at Denver International Airport.
14    In 1874...west winds blew at gale speeds from midnight until
        mid afternoon when the winds abated.  The maximum sustained
        velocity was 48 mph.
      In 1928...strong winds caused 3 hundred to 5 hundred dollars
        damage in Boulder.  Wind gusts to 70 mph were recorded at
        Valmont just east of Boulder.
      In 2006...an upper level jet stream combined with a high
        surface pressure gradient behind a cold front to produce
        strong winds across metro Denver.  A wind gust to 66 mph
        was recorded in Longmont.  North winds were sustained to
        38 mph with gusts to 52 mph at Denver International
        Airport where winds were strong and gusty most of the day.
      In 2020...a peak wind gust to 60 mph was observed from the
        northwest at Denver International Airport...with a peak
        gust to 55 mph at Centennial Airport.
14-15 In 1917...overnight rainfall was 0.03 inch.  This was the
        only measurable precipitation of the month...making it
        the 5th driest November on record.
      In 1985...3 to 6 inches of snow fell across metro Denver.
        Snowfall totaled 3.8 inches at Stapleton International
        Airport where northeast winds gusted to only 13 mph.
      In 2005...a winter storm that brought heavy snow to the
        mountains also spread heavy snow into the foothills to
        the west of Denver.  Snowfall totals included:  14 inches
        at Aspen Springs...13 inches near Pinecliffe...and 12 inches
        near Nederland.  Interstate 70 along with U.S. Highway 40
        had to be closed near Idaho Springs due to snow...poor
        visibility in blowing snow...numerous accidents...and an
        increased avalanche danger.  High winds were recorded in
        the foothills on the 14th.  Winds gusted to 89 mph at
        Georgetown and to 91 mph on Sugarloaf Mountain west of
        Boulder.  Strong microburst winds associated with a
        dissipating rain shower gusted to 61 mph at Denver
        International Airport on the 14th.
      In 2009...a storm system produced heavy snow over parts of
        Front Range Foothills...Urban Corridor and Palmer Divide.
        Storms totals in the Front Range Foothills included:
        13.5 inches...6 miles southwest of Evergreen and near
        Genesee; 13 inches...3 miles northwest of Idledale; 12
        inches...3 miles north of Conifer and near Kittredge; 11
        inches...12 miles southwest of Boulder and 3 miles
        southeast of Indian Hills and at Strontia Springs Dam;
        10 inches near Bailey...Bergen Park and Crow Hill; 9.5
        inches near Blackhawk and 4 miles east-northeast of
        Nederland. Across the Urban Corridor and Palmer Divide
        storm totals included: 12 inches at Highlands Ranch...11
        inches...5 miles south-southwest of Arapahoe Park and
        Louviers; 10 inches...4 miles south of Denver; 9 inches
        near Englewood...Lakewood...and Wheat Ridge; 8 inches at
        Aurora and 3 miles south-southwest of Castle Pines; 7.5
        inches...3 miles southeast of Denver; with 7 inches 2
        miles north-northeast of Commerce City.  At Denver
        International Airport...7.3 inches of snowfall was
        observed.
14-18 In 1964...the first measurable snowfall of the season
        totaled 6.0 inches at Stapleton International Airport
        where northeast winds gusted to 32 mph on the 14th.
        Most of the snow...4.2 inches...fell on the 14th.  This
        was the only measurable snow of the month.

$$