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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.

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