Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 110859
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COZ030>051-112300-

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT SUN JUN 11 2017

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

1-30  In 2012...it was the hottest June in Denver since weather
        records began back in 1872. The average temperature for
        the month was 75.0 degrees which was 7.6 degrees above
        normal.  There were a total of seventeen 90 degree days in
        the month of June. The highlight of record setting month
        was a stretch of five consecutive 100 degree days from the
        22nd to the 26th. This was only the third time in Denver
        weather history in which this happened. Two of the high
        temperatures during the stretch peaked at 105 degrees...
        which set the all time record for the month of June and
        tied the all time maximum temperature for Denver.
10-11 In 1882...heavy thunderstorm rains on the morning of the
        10th caused a rapid rise in Dry Creek...which enters the
        South Platte River at Fairview in present day south
        Denver.  This...combined with additional heavy rainfall
        on the 11th caused the South Platte River to overflow.
        Five people drowned and several houses were destroyed.
        Total losses in the city and suburbs was estimated at 75
        thousand dollars.  Total rainfall in central Denver was
        2.21 inches over the 2 days.
      In 2013...the high temperature of 99 degrees on the 10th
        broke the previous record maximum temperature of 97 for
        the date.  Also...the minimum temperature of 68 and high
        temperature of 100 degrees on the 11th established a new
        record for highest minimum and maximum temperature for
        the date.
11    In 1947...a trace of snow fell over downtown Denver.  Low
        temperature of 34 degrees was a record minimum for the
        date.
      In 1962...hail caused extensive crop damage near Hudson
        northeast of Denver.
      In 1970...stratiform rainfall totaled 3.16 inches at Stapleton
        International Airport.  This was the greatest amount of
        precipitation ever recorded on a calendar day in June.
        In addition...it was the greatest amount of precipitation
        ever measured during any 24-hour period in June.  The high
        temperature climbed to only 51 degrees...which was a record
        low maximum for the date.
      In 1973...large hail from 3/4 to 1 1/2 inches in diameter fell
        west of Boulder.
      In 1977...golf ball size hail was reported just south of
        Arapahoe County Airport...now Centennial Airport.  Lightning
        struck a home in Lakewood.
      In 1988...a 30-year-old man was seriously injured by lightning
        while mowing his lawn in Denver.
      In 1992...lightning started two house fires in the southern
        Denver suburbs where 3/4 inch hail fell and a funnel cloud
        was sighted.
      In 1999...severe thunderstorms formed over the Palmer Divide
        and moved across Douglas...Elbert...and Adams counties.
        Hail as large as 1 inch in diameter was reported in and
        near Castle Rock...Sedalia...Franktown...and Aurora.  Hail
        as large as golfballs accumulated several inches deep
        and caused a large section of a corrugated metal roof of
        a greenhouse complex to collapse near Franktown.  About a
        third of the roof covering the 30 thousand square foot
        building collapsed.  Thirty-five workers were trapped in
        the debris...but only 3 were treated for minor injuries.
        Hail 1 to 2 feet deep blocked the roadways and slowed the
        arrival of emergency vehicles.  Damage to the building
        was estimated to be around 3 million dollars.
      In 2006...a man was struck and killed by lightning as he was
        returning to his car after leaving the Mile High Flea
        Market near Henderson.  Two others were knocked down...but
        not injured by the lightning strike.  Severe thunderstorms
        produced large hail across the northern portion of metro
        Denver.  Hail to 1 1/4 inches in diameter was measured in
        Arvada...with 1 inch diameter hail reported near Fort
        Lupton.  Hail to 7/8 inch in diameter was recorded near
        Brighton...and hail...3/4 inch in diameter...fell near
        Keenesburg.
      In 2009...large hail pummelled portions of Adams...Arapahoe...
        Elbert and Douglas Counties.  Hail up to 1 1/2 inches in
        diameter was measured near Parker.
      In 2010...severe thunderstorms producing very large hail
        pummeled portions of Front Range Foothills and Urban
        Corridor.  The large hail ranged in size from 1 to
        2 1/2 inches...caused extensive damage to home and
        vehicles. The hardest hit areas included:  Brighton...
        Castle Rock...Greenland...Idledale...Mountain View and
        Thornton. The combination of heavy rain and hail
        destroyed 50 thousand acres of cropland in southeast Weld
        County.  Flash flooding forced the closure of State
        Highway 52...east of Prospect Valley. Several county roads
        were either flooded or completely washed out.  At Denver
        International Airport...0.69 inches of rainfall was
        observed.
11-14 In 1999...damage from several hailstorms in and near metro
        Denver totaled 35 million dollars.  About 17.5 million
        dollars was from automobile claims with another 17.5
        million in homeowner claims.  The areas hardest hit by the
        storms included Castle Rock...Commerce City...Evergreen...
        and Golden.

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