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Public Information Statement
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
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955 NOUS45 KBOU 300859 PNSBOU COZ030>051-302300- Public Information Statement National Weather Service Denver/Boulder CO 259 AM MDT TUE JUL 30 2024 ...Today in metro Denver weather history... 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. 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. 27-31 In 1956...96 percent of the total precipitation for the month of July occurred over the last five days of the month. Heavy thunderstorms produced 4.00 inches of rainfall at Stapleton Airport. This amount of precipitation in 5 days or less had been exceeded only 3 times in previous record. The last time had been in December of 1913 as snow. Considerable property damage occurred across metro Denver from flooding. 28-30 In 1889...from the 28th to the 30th...dense smoke from forest fires in the mountains obscured the sun over the city for three days. In 1971...a vigorous cold front late on the 28th produced northeast wind gusts to 39 mph and record breaking cold temperatures on the 29th and 30th. The temperature dipped to 47 degrees on the 29th and 43 degrees on the 30th... setting record minimums for the dates. Upslope cloudiness along with rain and fog early on the 29th helped set a record low maximum temperature of 58 degrees for the date. 29-30 In 1997...from the 29th into the 30th...heavy rain caused flooding and flash flooding in central portions of Adams and Arapahoe Counties. Two homes were extensively damaged when water flooded the basements and adjacent pasture area in Strasburg. Water 4 to 5 feet deep had pooled in the lower lying areas of the town. A portion of Quincy Road was closed in Arapahoe County when 4 feet of water covered the roadway. Rainfall totaled 3.06 inches at Denver International Airport...establishing a new record for 24-hour rainfall in July. The previous record was 2.42 inches set in 1965 on the 24th and 25th. 30 In 1879...lightning struck a brick kiln in north Denver. Three men were knocked senseless...but all recovered. Rainfall in the city was only 0.09 inch. In 1881...a thunderstorm dumped heavy rain and hail on the city...causing street flooding and much damage. A heavy torrent of rain fell with 1.10 inches measured in just 20 minutes. Storm total rainfall was 1.60 inches. The rain turned streets into running streams. Wood street crossings were torn up and washed away. The storm caused great damage by flooding many cellars where goods were stored. The brick yards suffered severe damage when the heavy rainfall destroyed many unfired bricks. In 1913...northeast winds were sustained to 41 mph with gusts to 48 mph. In 1939...a thunderstorm produced 0.08 inch of rainfall. This was the only measurable precipitation of the month...making the month the second driest July on record. In 1961...heavy rain and lightning disrupted power lines and caused flooding in Denver. Thunderstorm rains totaled 1.60 inches at 11th and Lincoln in central Denver. In 1972...the temperature climbed to a high of 100 degrees at Stapleton International Airport. In 1983...hail 3/4 to 1 inch in diameter fell in central and southeast Denver and in Littleton. Rainfall of 1.50 inches occurred in just 30 minutes in Littleton. There was some street flooding in both cities with wind gusts up to 55 mph. In 1984...central Aurora was hit by a downpour that produced 1.80 inches of rain and sent water 2 to 3 feet deep into some streets. Before the rain stopped later in the evening... the storm had dropped as much as 2.80 inches of moisture on the city. Thunderstorm rainfall totaled only 0.82 inch at Stapleton International Airport. In 1985...a tornado was spotted in open country 10 miles southwest of Bennett. No damage was reported. One inch hail was reported in south Lakewood. In 1997...one man was killed and his girlfriend critically injured when they were struck by lightning on the Kennedy Golf Course in southeast Denver. Both were struck in the head when they took refuge under a tree during a downpour. Lightning struck a home in unincorporated Arapahoe County east of Buckley Field. The fire started in the electrical panel boxes...causing extensive damage to the home. Heavy rain and hail triggered a flash flood in Boulder...which sent water through a window of the financial aid office on the University of Colorado campus. In addition...ceiling tiles...carpets...and dressing rooms were damaged at the Coors Events Center when a pipe draining rainwater broke during the downpour. In all...10 buildings on the campus received water damage estimated at 100 thousand dollars. Hail as large as 1.25 inches in diameter accompanied the heavy rain in Boulder. Thunderstorm rainfall totaled 2.71 inches at Denver International Airport where west winds gusted to 41 mph. This was the greatest calendar day official precipitation ever recorded in July. In 1998...heavy rain...up to 3 inches in an hour...caused flash flooding problems from Castle Rock to Parker. I-25 north of Castle Rock was closed as high waters covered sections of the highway. Some cars were left floating in the flood waters. In 2001...a severe thunderstorm produced a wind gust to 70 mph at a wind sensor on the northeast corner of Denver International Airport. In 2004...a severe thunderstorm produced wind gusts to 71 mph in Evergreen. In 2005...the temperature climbed to a high of 101 degrees at Denver International Airport. This was a new record maximum temperature for the date. In addition...this was the 7th day of the month with a high temperature of 100 degrees or more...which set a new Denver record for the most 100 degree days in a month...for a season...and in a year. In 2019...a severe thunderstorm produced a peak wind gust to 58 mph from the north at Denver International Airport. In 2021...a thunderstorm produced heavy rainfall...anywhere from 3.5 to 4.5 inches...produced flash flooding in Erie. Standing water stranded vehicles at the Intersection of Highway 7 and Mountain View Blvd. The fire department had to rescue a few motorists from their vehicles. A couple of basements also flooded. $$