####018005480#### NOUS45 KBOU 110859 PNSBOU COZ030>051-112300- Public Information Statement National Weather Service Denver/Boulder CO 259 AM MDT SAT MAY 11 2024 ...Today in metro Denver weather history... 10-11 In 1918...from the 10th to the 11th...post-frontal snowfall totaled 4.7 inches in downtown Denver. Northwest winds gusted to 19 mph on the 10th. In 1923...from the 10th to the 11th...winds were strong and gusty on both days. Northwest winds were sustained to 40 mph with gusts to 44 mph on the 10th. North winds were sustained to 39 mph with gusts to 46 mph behind an apparent cold front on the 11th. 10-12 In 2011...from the 10th to the 12th...a spring snowstorm brought heavy snow to the Front Range Foothills and Palmer Divide. Storm totals included: 18 inches...4 miles south-southeast of Pinecliffe; 16 inches in Coal Creek Canyon; 15 inches...4 miles west-southwest of Eldorado Springs; 13 inches at Gold Hill...12 inches...4 miles west-southwest of Conifer and 4 miles northwest of Elizabeth; 11.5 inches...6 miles southwest of Evergreen and 4 miles east-northeast of Nederland; 11 inches...3 miles east of Jamestown and 10.5 inches...3 miles east of Franktown and 3 miles south of Golden and 10 inches...10 miles north of Elizabeth. At Denver International Airport... 1 inch of snowfall was observed. In 2023...a slow moving storm system produced a period of moderate to heavy rainfall across the urban corridor...Palmer Divide and adjacent plains. A 24-hr daily record of 2.92 inches occurred at Denver International Airport on the 11th...with a 2-day total of 3.75 inches on the 11-12th...and 3-day total of 4.40 inches from the 10-12th. The prolonged period of rainfall resulted in flooding...flash flooding and washed out roadways... including Cherry Creek State Park and the National Wildlife Refuge at the Rocky Mountain Arsenal. Three-day rainfall amounts south and southeast of Denver ranged from 4.00 to 7.00 inches. In the Front Range west of Denver...above 10 thousand feet...heavy wet snowfall ranged from 1 to 2 feet. The 3-day event propelled Denver into 4th place for rainfall in month of May...with a total of 5.53 inches. 11 In 1879...an apparent cold front during the afternoon produced sustained north winds as high as 60 mph and great clouds of blowing dust. The dust filled the air until the thunderstorm rain began...which produced 1.46 inches of rainfall. The rain ended during the evening. In 1900...southwest winds were sustained to 40 mph with gusts to 46 mph. In 1958...a microburst caused a brief wind gust to 55 mph at Stapleton Airport. In 1963...south-southwest winds gusted to 48 mph at Stapleton Airport. Winds may have been stronger over west Denver where some buildings were damaged. In 1998...large hail fell over south metro Denver. Hail as large as 1 1/4 inches in diameter was measured in Parker with 1 inch hail recorded in Littleton and 4 miles south of Lakewood in Jefferson County. Hail to 3/4 inch diameter was measured in Douglas County...11 miles west- northwest of Parker. 11-12 In 2014...from the 11th to the 12th...a strong storm system moved from southwest Colorado and produced heavy snow in and near the Front Range Foothills and metro Denver. The snow was heaviest in the foothills where up to 2 1/2 feet of snow was observed. In the foothills...storm totals included: 30 inches near Pinecliffe; 29 inches... 8 miles northeast of Four Corners; 28 inches near Pingree Park; 27 inches near Allenspark; 20.5 inches near Idaho Springs; 19.5 inches at Gold Hill; 19 inches near Genesee; 18 inches near Blackhawk; 17 inches at Aspen Springs; 16.5 inches near Ward; 13.5 inches at Bergen Park; with 11 inches at Evergreen. Along Urban Corridor and Palmer Divide...storm totals included: 10.5 inches at Eldorado Springs; 10 inches at Ken Caryl; 9 inches at Superior; 8 inches near Morrison; 7.5 inches in Broomfield and Highlands Ranch; 7 inches in Denver... near Franktown...Golden...Lakewood and Highlands Ranch; 6 inches...5 miles northeast of Westminster...7 miles south of Lyons and near Parker; with 5.5 inches at Aurora. At Denver International Airport...1.1 inches of snowfall was observed... along with 0.9 inches of water. In 2023...a slow moving storm system produced a period of moderate to heavy rainfall across the urban corridor...Palmer Divide and adjacent plains. A 24-hr daily record of 2.92 inches occurred at Denver International Airport on the 11th...with a 2-day total of 3.75 inches on the 11-12th. The prolonged period of rainfall resulted in flooding...flash flooding and washed out roadways; including Cherry Creek State Park and the National Wildlife Refuge at the Rocky Mountain Arsenal. $$