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Colorado, Larimer and Boulder Counties Between 6000 and 9000 Feet

Public Information Statement

Statement as of 2:59 AM MDT on June 22, 2017

Expires 7:00 PM EDT on June 22, 2017


... Today in Metro Denver weather history...

21-22 in 1941... strong thunderstorms produced cloudbursts of rain
        in Boulder County... starting during the late evening of the
        21st and continuing overnight. The heavy rains over the
        Boulder Creek... Left Hand creek... and south St vrain river
        basins produced flooding in already swollen streams and
        turned dry gulches into raging torrents. The force of the
        floodwaters swept a man from the arms of his wife to his
        death... severely damaged canyon homes and swept others away...
        and hurtled a car down a steep embankment after the driver
        narrowly escaped. West of Boulder... the Boulder Canyon
        Highway was littered with rocks and debris and collapsed
        when two culverts were washed away. The flood waters
        washed much debris down Four Mile Canyon... damaging the Road
        near the creek bed. A bridge over Dry Creek just south of
        Niwot was completely washed away.
      In 1964... scattered hail and rain caused property damage and
        local flooding in Boulder.
      In 1989... an unseasonably cold weather system produced strong
        winds over much of Metro Denver and snowfall in the
        foothills as low as 7500 feet elevation. One to 6 inches
        of snow fell in the foothills west of Denver with 15 inches
        reported on The Summit of Mount Evans. Six inches of snow
        were measured at Conifer. Rainfall totaled only 0.09 inch
        at Stapleton International Airport where northwest winds
        gusted to 29 mph on the 21st.
22 in 1872... small sandstorms... frequently seen on the prairie...
        occasionally passed through the city.
      In 1983... 3/4 inch hail was observed at Deckers... and a
        thunderstorm produced wind gusts to 55 mph at Littleton.
      In 1988... a tornado was spotted one mile east of brighton; it
        remained on the ground for about 6 minutes... but did no
        reportable damage. Lightning damaged a home near Castle
        Rock.
      In 1991... thunderstorms produced Golf Ball size hail in
        Lafayette. The strongest storms occurred north of Metro
        Denver.
      In 1992... nickel size hail was reported just east of Parker.
      In 1995... large hail 3/4 to 1 3/4 inches in diameter fell in
        Castle Rock where a funnel cloud was sighted. Hail 3/4
        inch to 1 inch in diameter fell in south Denver and Aurora.
        A funnel cloud was also sighted over Chatfield Reservoir.
        In Bennett... very strong dry microburst winds of unknown
        speeds ripped a 14- by 48-foot metal roof off of a barn.
        The roof was tossed approximately 250 yards. A few 150-
        pound Railroad ties were moved 10 to 15 feet.
      In 1997... a tornado touched down near the Adams County
        Fair Grounds northeast of Denver... uprooting several
        trees and damaging a car. A dry microburst produced
        a brief wind gust to 69 mph at Jefferson County Airport.
        A small brief tornado was sighted near Hudson... but did
        no reported damage.
      In 1998... 3/4 inch hail fell near Hudson.
      In 1999... thunderstorm winds gusted to 63 mph at Denver
        International Airport.
      In 2003... hail as large as 2 inches in diameter was measured
        in Fort Lupton with 3/4 inch hail in Erie and near
        Boulder.
      In 2006... a small tornado (f0) touched down near Franktown...
        but caused no damage.
      In 2008... strong winds from dry microbursts developed over
        parts of southern Weld and western Arapahoe counties.
        A peak gust of 60 mph was observed in centenniel.
        Near Frederick... strong winds snapped 3 power poles and
        sparked a small grassfire near State Highway 52 and
        Interstate 25. At Denver International Airport... a peak
        gust of 31 mph was observed.
      In 2009... hail up to 2 inches in diameter was observed near
        Crescent in Boulder County.
22-26 in 2012... the maximum temperature exceeded 100 degrees for
        five consecutive days. Two of the high temperatures on
        the 25th and 26th peaked at 105 degrees... which set the
        all time record for the month of June and tied the all
        time maximum temperature for Denver.


259 am MDT Thu Jun 22 2017

... Today in Metro Denver weather history...

21-22 in 1941... strong thunderstorms produced cloudbursts of rain
        in Boulder County... starting during the late evening of the
        21st and continuing overnight. The heavy rains over the
        Boulder Creek... Left Hand creek... and south St vrain river
        basins produced flooding in already swollen streams and
        turned dry gulches into raging torrents. The force of the
        floodwaters swept a man from the arms of his wife to his
        death... severely damaged canyon homes and swept others away...
        and hurtled a car down a steep embankment after the driver
        narrowly escaped. West of Boulder... the Boulder Canyon
        Highway was littered with rocks and debris and collapsed
        when two culverts were washed away. The flood waters
        washed much debris down Four Mile Canyon... damaging the Road
        near the creek bed. A bridge over Dry Creek just south of
        Niwot was completely washed away.
      In 1964... scattered hail and rain caused property damage and
        local flooding in Boulder.
      In 1989... an unseasonably cold weather system produced strong
        winds over much of Metro Denver and snowfall in the
        foothills as low as 7500 feet elevation. One to 6 inches
        of snow fell in the foothills west of Denver with 15 inches
        reported on The Summit of Mount Evans. Six inches of snow
        were measured at Conifer. Rainfall totaled only 0.09 inch
        at Stapleton International Airport where northwest winds
        gusted to 29 mph on the 21st.
22 in 1872... small sandstorms... frequently seen on the prairie...
        occasionally passed through the city.
      In 1983... 3/4 inch hail was observed at Deckers... and a
        thunderstorm produced wind gusts to 55 mph at Littleton.
      In 1988... a tornado was spotted one mile east of brighton; it
        remained on the ground for about 6 minutes... but did no
        reportable damage. Lightning damaged a home near Castle
        Rock.
      In 1991... thunderstorms produced Golf Ball size hail in
        Lafayette. The strongest storms occurred north of Metro
        Denver.
      In 1992... nickel size hail was reported just east of Parker.
      In 1995... large hail 3/4 to 1 3/4 inches in diameter fell in
        Castle Rock where a funnel cloud was sighted. Hail 3/4
        inch to 1 inch in diameter fell in south Denver and Aurora.
        A funnel cloud was also sighted over Chatfield Reservoir.
        In Bennett... very strong dry microburst winds of unknown
        speeds ripped a 14- by 48-foot metal roof off of a barn.
        The roof was tossed approximately 250 yards. A few 150-
        pound Railroad ties were moved 10 to 15 feet.
      In 1997... a tornado touched down near the Adams County
        Fair Grounds northeast of Denver... uprooting several
        trees and damaging a car. A dry microburst produced
        a brief wind gust to 69 mph at Jefferson County Airport.
        A small brief tornado was sighted near Hudson... but did
        no reported damage.
      In 1998... 3/4 inch hail fell near Hudson.
      In 1999... thunderstorm winds gusted to 63 mph at Denver
        International Airport.
      In 2003... hail as large as 2 inches in diameter was measured
        in Fort Lupton with 3/4 inch hail in Erie and near
        Boulder.
      In 2006... a small tornado (f0) touched down near Franktown...
        but caused no damage.
      In 2008... strong winds from dry microbursts developed over
        parts of southern Weld and western Arapahoe counties.
        A peak gust of 60 mph was observed in centenniel.
        Near Frederick... strong winds snapped 3 power poles and
        sparked a small grassfire near State Highway 52 and
        Interstate 25. At Denver International Airport... a peak
        gust of 31 mph was observed.
      In 2009... hail up to 2 inches in diameter was observed near
        Crescent in Boulder County.
22-26 in 2012... the maximum temperature exceeded 100 degrees for
        five consecutive days. Two of the high temperatures on
        the 25th and 26th peaked at 105 degrees... which set the
        all time record for the month of June and tied the all
        time maximum temperature for Denver.



Weather Severe Map
Alabama - Tornado Watch , Flood Warning, Areal Flood Warning , Flash Flood Warning, Areal Flood Warning , Coastal Flood Warning, Areal Flood Warning , Areal Flood Warning , Flash Flood Warning , Flash Flood Warning, Areal Flood Warning , Flash Flood Watch , Areal Flood Advisory, Flash Flood Watch , Flash Flood Watch, Coastal Flood Warning, High Surf Advisory, Coastal Hazard Statement , Wind Advisory
Arizona - Excessive Heat Warning , Heat Advisory , Record Report
Arkansas - Flood Warning , Flash Flood Watch
California - Flood Warning , Flood Warning, Areal Flood Warning , Areal Flood Advisory , Heat Advisory , Excessive Heat Warning , Fire Weather Warning , Beach Hazard Statement , Record Report
Colorado - Flood Warning , Flood Advisory , Heat Advisory , Fire Weather Warning , Record Report , Public Information Statement
Connecticut - Coastal Flood Statement
Delaware - Coastal Flood Advisory
District of Columbia - Air Quality Alert
Florida - Tornado Watch , Flash Flood Warning, Areal Flood Warning , Flood Warning , Flash Flood Watch, Coastal Flood Advisory, High Surf Advisory, Coastal Hazard Statement , High Surf Advisory, Coastal Hazard Statement , Coastal Hazard Statement , Flash Flood Watch , Wind Advisory , Record Report
Georgia - Special Statement
Hawaii - High Surf Advisory , Special Statement
Idaho - Flood Warning, Areal Flood Warning , Areal Flood Warning , Flood Warning
Illinois - Flood Warning
Indiana - Flood Warning
Iowa - Areal Flood Advisory , Special Statement
Kansas - Public Information Statement , Public Information Statement
Louisiana - Tornado Watch , Tropical Storm Warning , Hurricane Statement , Flood Warning , Flash Flood Watch , Coastal Flood Advisory, Flash Flood Watch , Lake Wind Advisory , Wind Advisory , Public Information Statement , Public Information Statement
Maine - Public Information Statement , Public Information Statement
Maryland - Air Quality Alert
Michigan - Flood Advisory , Beach Hazard Statement
Minnesota - Special Statement
Mississippi - Tornado Watch , Hurricane Statement , Flash Flood Warning, Areal Flood Warning , Flood Warning , Flash Flood Warning , Flood Warning, Areal Flood Warning , Areal Flood Warning , Flash Flood Watch , Coastal Flood Advisory, Flash Flood Watch , Special Statement , Public Information Statement
Missouri - Flash Flood Watch
Montana - Flood Warning , Lake Wind Advisory
Nebraska - Record Report , Public Information Statement
Nevada - Areal Flood Warning , Flood Warning , Areal Flood Advisory , Excessive Heat Warning , Record Report
New Jersey - Coastal Flood Advisory , Air Quality Alert
New Mexico - Heat Advisory
New York - Coastal Flood Statement
North Carolina - Beach Hazard Statement
North Dakota - Flood Warning , Wind Advisory
Oregon - Heat Advisory , Special Statement
Puerto Rico -
South Carolina - Special Statement
South Dakota - Severe Thunderstorm Warning
Tennessee - Flash Flood Watch , Special Statement
Texas - Tropical Storm Warning , Hurricane Statement , Flood Warning , Flash Flood Watch , Coastal Flood Advisory, High Surf Advisory, Coastal Hazard Statement , Coastal Flood Advisory, Coastal Hazard Statement , Coastal Flood Advisory , Wind Advisory , Lake Wind Advisory , Heat Advisory , Special Statement , Record Report , Public Information Statement , Public Information Statement
Utah - Heat Advisory , Excessive Heat Warning , Fire Weather Warning , Record Report
Virginia - Air Quality Alert
Washington - Special Statement
Wisconsin - Flood Warning , Flood Advisory
Wyoming - Areal Flood Warning
- Tornado Watch

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