####018007047#### NOUS45 KBOU 040859 PNSBOU COZ030>051-042300- Public Information Statement National Weather Service Denver/Boulder CO 259 AM MDT SAT MAY 4 2024 ...Today in metro Denver weather history... 1-5 In 1898...from the 1st to the 5th...snowfall totaled 15.5 inches in downtown Denver. Most of the snow...6.2 inches... fell on the 3rd. Most of the snow melted as it fell. The greatest snow depth on the ground was only 2.5 inches on the 3rd at 8:00 PM. This was the only snowfall during the month. Northeast winds were sustained to 22 mph on the 1st. 2-4 In 1987...from the 2nd to the 4th...a slow moving storm brought rain...wind...and snow to metro Denver. Rainfall totaled 1.04 inches at Stapleton International Airport where north winds gusted to 48 mph on the 3rd. The foothills received 5 to 10 inches of snow. 2-5 In 2001...from the 2nd to the 5th...a very slow moving Pacific storm system became parked near the Four Corners region... which allowed heavy snow to develop above 6500 feet in the foothills with a mix of rain and snow over lower elevations of metro Denver. Snowfall totals included: 21 inches atop Crow Hill and at Idaho Springs; 19 inches near Blackhawk; and 18 inches in Coal Creek Canyon...Genesee...and 11 miles southwest of Morrison. Snowfall totaled 6.2 inches at the site of the former Stapleton International Airport. Precipitation (rain and melted snow) totaled 2.09 inches at Denver International Airport where north winds gusted to 30 mph on the 2nd. 3-5 In 1908...rain changed to snow on the evening of the 3rd and continued through the early evening of the 5th. Snowfall totaled 10.0 inches over downtown Denver. This was the last measurable snow of the season. Precipitation totaled 1.51 inches. North winds were sustained to 23 mph on the 3rd...33 mph on the 4th...and 21 mph on the 5th. Three temperature records were set. High temperatures of 30 degrees on the 4th and 38 degrees on the 5th were record low maximum temperatures for the dates. The reading on the 4th was also the all-time record low maximum for the month of May. In 2007...a slow moving Pacific storm system...from the Desert Southwest...brought a period of unsettled weather to the region. During the 3-day period...locally heavy snow was reported over parts of the Front Range Foothills. Storm totals included: 15 inches near Conifer...14.5 inches west of Jamestown...13.5 inches; 6 miles southwest of Evergreen...and 12.5 inches at Pine Junction. Severe thunderstorms...producing large hail...up to one inch in diameter were observed in the vicinity of Boulder and Hudson. Lightning struck a residence in Jefferson County. The roof was hit...causing the attic to catch fire. At Denver International Airport...lightning struck a United Airlines jet as it was pushing away from the gate. The passengers were taken off the jet and put on another plane. 4 In 1893...northwest winds were sustained to 42 mph. In 1971...a funnel cloud was sighted 10 miles southwest of Boulder. Hail stones to 1 inch in diameter fell in southeast Denver...but caused only minor damage. In 2006...a severe thunderstorm produced hail to 1.00 inch in diameter in Aurora near Cherry Creek Reservoir. In 2010...high winds downed trees and power lines across parts of the Front Range Foothills and Urban Corridor. Downed power lines sparked a 12-acre wildfire near Conifer. In Boulder...Longmont and Louisville...the wind damaged roofs and broke windows and skylights. Peak wind gusts included: 75 mph in northwest Longmont...71 mph at the National Wind Technology Center and 4 miles south- southwest of Superior...61 mph at Broomfield and 56 mph in Erie. At Denver International Airport...a peak wind gust to 46 mph was observed. 4-5 In 1986...the 4th to the 5th...high winds buffeted the foothills. Wind speeds of 60 to 75 mph were recorded in Boulder. At Stapleton International Airport...west winds gusted to 45 mph on the 4th and to 40 mph on the 5th. In 2000...a brief warm spell resulted in setting two daily high temperature records. The temperature climbed to highs of 87 degrees on the 4th and 89 degrees on the 5th. 4-8 In 1969...from the 4th to the 8th...heavy rains caused flooding on Boulder Creek in Boulder...which resulted in one death on the 7th. Flooding also occurred on Bear Creek in Sheridan and on the South Platte River in Denver. Rain over most of the eastern foothills started late on the 4th and continued with only brief interruptions in many areas until the morning of the 8th. Very high rates of rainfall occurred on the 6th and 7th with the greatest intensities in a band along the foothills from about 25 miles southwest of Denver northward to Estes Park. Storm totals by both official and unofficial measurements exceeded 10 inches over much of this area and were over 12 inches in some localities. Heavy snow fell in the higher mountains and in the foothills later in the period. The saturation of the soil resulted in numerous rock and land slides...and the heavy run-off caused severe damage along many streams and flooding on the South Platte River. Many foothill communities were isolated as highways were blocked and communications disrupted. Roads were severely damaged over a wide area...and a large number of bridges washed out. Many roads were closed due to the danger from falling rocks. A building in Georgetown collapsed from the weight of heavy wet snow. In Boulder...a man drowned when caught by the flooding waters of Boulder Creek...and a patrolman was injured. Rainfall totaled 7.60 inches in Boulder with 9.34 inches recorded at the Public Service Company electric plant in Boulder Canyon. In Morrison...rainfall totaled 11.27 inches in 4 days. Heavy rainfall totaled 4.68 inches at Stapleton International Airport over 3 days from the 5th through the 7th. Rainfall of 3.14 inches was recorded in 24 hours on the 6th and 7th. Downstream flooding continued along the South Platte River until the 12th when the flood crest reached the Nebraska line. $$