Public Information Statement
Issued by NWS Denver/Boulder, CO

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Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT TUE AUG 22 2017

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

19-30 In 1875...grasshoppers appeared in great numbers at 10:00 AM
        on the 19th.  Thousands landed on the ground.  The streets
        were literally covered with them.  Swarms of grasshoppers
        were seen on each day.  All gardens in the city were
        devastated...and in the countryside the grasshoppers were
        very destructive to ripened grain.  On the 30th the
        grasshoppers were so numerous as to almost darken the sun.
22    In apparent thunderstorm produced southwest
        sustained winds to 40 mph with gusts to 43 mph.
      In 1903...a late afternoon thunderstorm produced rain...hail...
        and east winds sustained to 40 mph with gusts to 44 mph.
      In 1904...the lowest recorded temperature in August...40
        degrees...occurred.  The same temperature also occurred on
        three consecutive days...August 24...25...and 26 in 1910.
      In 1965...heavy rain and hail caused some damage from flooding
        over northern Douglas County from Castle Rock to Franktown.
      In 1981...thunderstorms moved across metro Denver.  At least
        5 funnel cloud sightings were reported.  Funnel clouds
        were seen at 96th Ave. and Sheridan Blvd. and at 92nd Ave.
        and Federal Blvd. in Westminster and 7 miles north of
        Stapleton International Airport.  Lightning injured two
        people in Boulder.  A quarter inch of rain fell in just
        5 minutes in Brighton.  Up to 3/4 inch of rain doused
        Parker in 30 minutes.
      In 1983...3/4 inch diameter hail was reported at Kittredge...
        along with 0.60 inch of rain in 25 minutes.
      In 1984...a thunderstorm dumped 4 inches of rain on Brighton
        in 90 minutes...causing extensive street flooding in the
        downtown area.
      In 1987...over an inch of rain fell in 24 hours throughout
        most of metro Denver.  A public library suffered water
        damage to the ceiling...carpet...and a few books.  Rainfall
        was 0.76 inch at Stapleton International Airport.
      In 1990...lightning knocked out power to about 2500 homes in
        Lakewood for about an hour.
      In 1991...National Weather Service personnel at Stapleton
        International Airport sighted an apparent tornado briefly
        on the ground 3 miles west-northwest of the airport.  No
         damage was reported.
      In 1995...lightning struck 3 electrical power substations in
        Louisville.  Residences of more than 4500 people were
        without power from 30 minutes to more than an hour.
      In 1996...between 1 and 3 inches of rain fell across metro
        Denver.  As a result...several low lying areas were flooded.
        A bicyclist was swept into a fast moving creek when he
        tried to cross a flooded bike path.  The man was washed
        downstream about 15 feet before getting snagged by a tree
        stump.  He and a man who tried to rescue him received
        minor injuries.  The heavy rain caused numerous power
        outages...false fire alarms...and traffic accidents.  In
        Lakewood...telephone service to around 60 thousand
        residents was knocked out when a switching center was
        flooded.  Funnel clouds were sighted near Chatfield
        Reservoir and Highlands Ranch.
      In 2000...lightning sparked a blaze which gutted a 10-unit
        apartment building in Highlands Ranch.  Twenty-eight
        people were left homeless.  Damage was estimated at
        2 million dollars.
       In 2007...severe thunderstorms produced large hail...up to
        1 1/4 inches in the vicinities of Castle Rock...
        Elizabeth and Franktown.
      In 2013...flash flooding occurred in central Douglas County
        with numerous road closures reported. One of the closures
        occurred at the Tomah Road exit along I-25...south of
        Castle Rock.  The closure backed up all I-25 the way to
        Castle Rock. At Denver International Airport...1.94 inches
        of precipitation was recorded...which set a new record
        rainfall for the date. The old record was 0.75 inches...
        set back in 1953.
22-24 In 1987...some locations in metro Denver had a total 3-day
        rainfall of 2 to 4 inches.  Rainfall totaled 0.96 inch
        at Stapleton International Airport.

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