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Colorado, South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet

Public Information Statement

Statement as of 2:59 AM MDT on August 20, 2017

Expires 7:00 PM EDT on August 20, 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.
20 in 1980... winds to 55 to 60 mph were recorded in south
        Boulder.
      In 1982... strong thunderstorm winds blasted the Jefferson
        County Airport near Broomfield... causing an estimated 3
        million dollars in damage. At least 5 hangars and 15
        airplanes were damaged... many seriously; one hangar was
        completely destroyed. Torrential rains accompanied the
        winds. Heavy rains also dumped on Boulder where 1.65
        inches fell in just 15 minutes... causing street flooding.
        Wind gusts to 72 mph were recorded in Boulder. Over half
        an inch of rain fell in just 5 minutes in Littleton where
        two homes were struck by lightning. Lightning also struck
        a house in Arvada where over an inch of rain sent Ralston
        creek over its banks. Strong winds accompanied the storms.
      In 1984... slow moving thunderstorms dumped 1.25 inches of rain
        in Evergreen... causing street flooding. A half inch of rain
        fell in just 18 minutes in southeast Denver. Littleton and
        Boulder were also drenched with about an inch of rain.
        Rainfall totaled 0.92 inch at Stapleton International
        Airport.
      In 2001... severe thunderstorms produced damaging winds and
        large hail across Metro Denver. Hail as large 1 inch in
        diameter fell in Aurora near Cherry Creek. Strong
        thunderstorm winds gusting as high as 58 mph blew the roof
        from a building between Thornton and Denver and toppled
        several trees in Denver. One tree landed on a mail truck.
        Other thunderstorm winds were clocked to 60 mph near Parker...
        62 mph in Broomfield... and 61 mph at Denver International
        Airport.
      In 2006... a tornado (f0) touched down near Bennett... but caused
        no reported damage.
      In 2013... severe thunderstorms pounded the southern Denver
        suburbs and other parts of the Front Range. In Jefferson
        County... water rescues were reported for some people in
        stranded cars. In the ken caryl area... large hail from one
        inch to 1 3/4 inches in diameter was reported. On west
        Chatfield Avenue in Jefferson County... hail runoff gathered
        six inches deep in spots and "hail plows" were sent out to
        clear some streets. Hail up to one inch in diameter was
        also reported near Castle Rock.


259 am MDT sun Aug 20 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.
20 in 1980... winds to 55 to 60 mph were recorded in south
        Boulder.
      In 1982... strong thunderstorm winds blasted the Jefferson
        County Airport near Broomfield... causing an estimated 3
        million dollars in damage. At least 5 hangars and 15
        airplanes were damaged... many seriously; one hangar was
        completely destroyed. Torrential rains accompanied the
        winds. Heavy rains also dumped on Boulder where 1.65
        inches fell in just 15 minutes... causing street flooding.
        Wind gusts to 72 mph were recorded in Boulder. Over half
        an inch of rain fell in just 5 minutes in Littleton where
        two homes were struck by lightning. Lightning also struck
        a house in Arvada where over an inch of rain sent Ralston
        creek over its banks. Strong winds accompanied the storms.
      In 1984... slow moving thunderstorms dumped 1.25 inches of rain
        in Evergreen... causing street flooding. A half inch of rain
        fell in just 18 minutes in southeast Denver. Littleton and
        Boulder were also drenched with about an inch of rain.
        Rainfall totaled 0.92 inch at Stapleton International
        Airport.
      In 2001... severe thunderstorms produced damaging winds and
        large hail across Metro Denver. Hail as large 1 inch in
        diameter fell in Aurora near Cherry Creek. Strong
        thunderstorm winds gusting as high as 58 mph blew the roof
        from a building between Thornton and Denver and toppled
        several trees in Denver. One tree landed on a mail truck.
        Other thunderstorm winds were clocked to 60 mph near Parker...
        62 mph in Broomfield... and 61 mph at Denver International
        Airport.
      In 2006... a tornado (f0) touched down near Bennett... but caused
        no reported damage.
      In 2013... severe thunderstorms pounded the southern Denver
        suburbs and other parts of the Front Range. In Jefferson
        County... water rescues were reported for some people in
        stranded cars. In the ken caryl area... large hail from one
        inch to 1 3/4 inches in diameter was reported. On west
        Chatfield Avenue in Jefferson County... hail runoff gathered
        six inches deep in spots and "hail plows" were sent out to
        clear some streets. Hail up to one inch in diameter was
        also reported near Castle Rock.



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Arkansas - Flood Warning , Heat Advisory
California - Fire Weather Warning , Beach Hazard Statement , Air Quality Alert
Colorado - Public Information Statement , Public Information Statement
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Hawaii - Special Statement , Record Report
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Louisiana - Flood Warning , Heat Advisory
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Nebraska - Severe Thunderstorm Warning , Severe Thunderstorm Warning , Flood Warning , Areal Flood Warning , Flood Warning, Areal Flood Warning , Special Statement
Nevada -
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New York - Record Report
Ohio - Dense Fog Advisory , Dense Fog Advisory
Oklahoma - Heat Advisory
Oregon - Fire Weather Warning , Air Quality Alert
Pennsylvania - Dense Fog Advisory
South Carolina - Public Information Statement
Tennessee - Heat Advisory
Texas - Flood Warning , Flash Flood Watch , Heat Advisory , Special Statement
West Virginia - Dense Fog Advisory
Wyoming - Special Statement

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