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Colorado, Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet

Public Information Statement

Statement as of 7:45 PM MDT on August 01, 2015


... This week in Metro Denver weather history...

18-2 in 1987... a streak of 16 consecutive days of 90 degrees
        ranked 4th on the list of hot streaks. The record of
        24 consecutive days was established in the Summer of
        2008.
2 in 1878... the high temperature reached 100 degrees in
        downtown Denver.
      In 1911... an apparent dry microburst produced sustained
        west winds to 42 mph.
      In 1972... one workman was killed and another injured when
        a strong gust of wind destroyed a partially completed
        apartment building in south Denver. Hail to 1 3/4 inch
        diameter fell in Golden.
      In 1973... hail to 3/4 inch diameter was reported in Boulder.
      In 1986... a major outbreak of severe thunderstorms occurred
        along the Front Range. Thunderstorms developed
        explosively. Some places were hit by large hail twice.
        Two inch diameter hail broke car windows on I-25 west of
        Brighton... and up to 1 1/4 inch hail broke windows in
        Thornton. Baseball size hail damaged several planes near
        Watkins. Funnel clouds were sighted around Aurora. Hail
        over 1/2 inch in diameter covered the ground 3 to 4 inches
        deep at Hudson northeast of Denver. Most of the hail fell
        north of Metro Denver... but 3/4 inch diameter hail was
        measured at Stapleton International Airport. Total damage
        from the hail storms this day was estimated at over
        10 million dollars.
      In 1991... late afternoon thunderstorms produced heavy rain
        across Metro Denver. Two feet of water covered parts of
        I-25 in southeast Denver... while one foot of water covered
        parts of U.S. Highway 285 in Englewood. Thunderstorm
        rainfall totaled 0.50 inch at Stapleton International
        Airport.
      In 2001... severe thunderstorms producing heavy rain and hail...
        either washed out or damaged several County roads in the
        Watkins and Bennett areas. A small tornado (f0) touched
        down near Bennett... but did no damage. Hail as large as
        1 3/4 inches in diameter fell near Watkins. One inch
        diameter hail was measured near Hudson and Keenesburg.
      In 2008... strong winds blew several trees down in Denver...
        damaging homes and Downing power lines. A peak wind gust
        of 67 mph occurred at centenniel Airport... with gusts to 60
        mph estimated in Denver. A peak wind gust of 37 mph was
        measured at Denver International Airport. An elderly man
        was killed when a wind damaged tree broke free and crushed
        him while he attempted to remove it. The downed power
        lines caused outages to about 500 xcel energy customers.
2-3 in 1876... grasshoppers were in great abundance in the city
        and caused considerable damage to gardens and to crops
        in the surrounding farms and ranches.
      In 1951... heavy thunderstorms rumbled across Metro Denver
        through the night. Heavy rain totaled 3.45 inches at
        Stapleton Airport. This was the greatest 24 hour
        precipitation ever recorded during the month of August
        in Denver.
      In 2007... heavy rain caused localized flash flooding near
        ft. Lupton. Up to 8 inches of water was reported across
        County Road 18. In addition... several other County roads
        in the immediate area were washed out.
3 in 1878... the high temperature climbed to 100 degrees in
        downtown Denver.
      In 1900... a thunderstorm produced west winds sustained to
        48 mph with gusts to 55 mph... but only a trace of rain.
      In 1903... a thunderstorm produced a trace of rainfall and
        northwest winds sustained to 45 mph with gusts to 60 mph.
        The high temperature was 99 degrees.
      In 1927... a thunderstorm produced hail and sustained north
        winds to 22 mph.
      In 1933... heavy cloudburst rains caused the failure of the
        Castlewood dam... which resulted in flash flooding on Cherry
        Creek... the deaths of 7 people in Denver... and flood damage
        estimated at 1 million dollars. Lower Denver was flooded
        during the morning by waters pouring down Cherry Creek
        and its valley from Castlewood dam... which had broken
        between midnight and 2:00 am. Heavy rain of 3 to 9 inches
        in 9 hours in the watershed above the dam resulted in the
        failure. At 7:30 am... the flow in Cherry Creek was reported
        at 16 thousand second-feet as compared with a peak flow of
        3 thousand second-feet in other years. The flood waters
        ruined hundreds of acres of crops and drowned scores of
        farm animals. Six bridges in Denver were swept away.
        Great deposits of mud were left in the lower sections of
        the city... including hundreds of basements and lower floors
        of buildings. At the end of the month... a deadly stench
        still rose from swampy areas near the Lower City limits.
      In 1963... heavy thunderstorm rains in the Parker area caused
        Cherry Creek to overflow... which damaged roads.
      In 1985... a tornado touched down briefly about 10 miles
        northeast of Parker. No damage was reported.
      In 1991... upslope northeast winds produced chilly temperature
        readings and heavy rain across Metro Denver. Rainfall...
        with no thunder... totaled 1.56 inches at Stapleton
        International Airport where the heavy rain briefly reduced
        the surface visibility to 7/8 mile. The Mercury climbed to
        a high of only 63 degrees.
      In 1992... a thunderstorm wind gust to 64 mph was recorded in
        Brighton. A wind gust to 60 mph was measured near the
        construction site of the new Denver International Airport.
        Lightning started a fire in an Evergreen church... causing
        over 75 thousand dollars in damage.
      In 1998... 3/4 inch hail fell in Jefferson County 15 miles
        northwest of Arvada.
      In 2006... heavy thunderstorm rainfall caused flash flooding
        along Leyden creek in unincorporated Jefferson County.
        An automated rain gauge on upper Leyden creek... 6 miles
        northwest of Arvada... measured 2.68 inches of rainfall in
        less than 2 hours. Two to three feet of water covered the
        roadway at the intersection of 82nd and Quaker Street.
      In 2009... a woman riding her bike... in training for an ironman
        triatholon... was struck by lightning in Boulder. She was in
        the 78th mile of a 100-Mile training ride when she was
        hit. The woman lost her vision initially and couldn't
        move her arms. After a short stay in the hospital... she
        made of complete recovery.
3-4 in 1988... two inches of rain fell in 3 hours at both Morrison
        and Wheat Ridge. Thunderstorm rainfall totaled 0.80
        inch overnight at Stapleton International Airport.
4 in 1889... southwest winds were sustained to 42 mph with
        an extreme velocity to 52 mph.
      In 1924... 0.01 inch of rain fell over downtown Denver. This
        along with the 0.01 inch of rainfall on the 10th was the
        only rainfall of the month... the driest August on record.
      In 1963... heavy rains in the foothills above Idaho Springs
        caused mud and rock slides which closed U.S. Highways 6
        and 40 for a time.
      In 1976... hail to 1 inch diameter was reported 12 miles
        southwest of Denver. Hail to 3/4 inch in diameter was
        reported in Lakewood. Small hail... 1/4 to 1/2 inch in
        diameter... fell at Stapleton International Airport.
      In 1982... heavy rain poured through the roof of a clothing
        store in Aurora... causing widespread water damage. The roof
        was being repaired when the storm hit.
      In 1983... hail up to one inch in diameter fell in Aurora
        where heavy rain produced street flooding.
      In 1984... a Colorado state trooper was struck and injured by
        lightning in Northglenn.
      In 1989... a microburst wind gust to 52 mph was recorded at
        Stapleton International Airport.
      In 1997... lightning sparked a small fire in a home in Arvada...
        causing minor damage. Several intersections in both Arvada
        and Westminster were flooded by thunderstorms producing
        heavy rain. Several cars were damaged by the high waters...
        and a number of businesses were flooded.
      In 1999... flooding and flash flooding problems developed over
        Metro Denver as slow moving thunderstorms dumped from 2 to
        3.5 inches of rainfall in about 3 hours. Near the Junction
        of I-25 and U.S. Highway 36... up to 4 feet of water flooded
        an auto dealership. About 45 cars were ruined. Damage
        estimates to the dealership alone totaled nearly a half
        million dollars. Sections of I-25 and U.S. 36 near the
        interchange were closed due to floodwaters. Floodwaters...
        up to 5 feet deep... forced the evacuation of two Mobile
        home Parks in Federal Heights. Railroad tracks were
        washed out near federal Blvd. And 64th Avenue. Numerous
        power outages caused widespread blackouts in Thornton and
        Littleton. Along Massey Draw near Carr St. And Chatfield
        Reservoir... 4 homes were flood damaged and portions of their
        backyards washed out. Widespread street flooding was also
        reported in Boulder where several buildings were flood
        damaged... including the University of Colorado Memorial
        center.
      In 2004... two golfers were shocked when lightning struck the
        eighth green of The Golf Course at Castle pines north of
        Castle Rock. The two men suffered only minor injuries.
        Heavy thunderstorm rain from the same storm caused flash
        flooding. Floodwaters rushed across parts of U.S. Highway
        85 near the entrance to The Castle pines Golf club. The
        traffic lanes were covered with up to 6 inches of running
        water.
      In 2008... lightning sparked a grassfire that consumed 300
        acres on the northern edge of Green Mountain... in Jefferson
        County. Gusty winds and very dry conditions allowed the
        wildfire to quickly spread and threaten several houses.
        Fortunately... only minor damage was reported to homes due
        to smoke and melted siding.
5 in 1881... the low temperature cooled to only 76 degrees... the
        record high minimum temperature for the month.
      In 1889... southwest winds were sustained to 42 mph.
      In 1918... hail pelted the city... but was light and caused no
        damage. Precipitation totaled 0.25 inch. Northwest winds
        were sustained to 31 mph.
      In 1964... lightning struck two boys in Denver while playing
        Ball. One was treated and released from the hospital... but
        the other boy suffered second degree electrical shock and
        cardiac arrest and was hospitalized in critical condition
        for several days.
      In 1969... two tornadoes touched down briefly in an open field
        southeast of Buckley field in Aurora. No damage was
        reported.
      In 1970... heavy rain in the Indian HIlls area in the
        foothills west of Denver caused flash flooding... which
        washed out roads and damaged other property. Hail
        accumulated to a 3 inch depth with stones up to Golf Ball
        size; however... most of the damage was from flooding.
      In 1982... 2.38 inches of rain fell in an hour in Arvada...
        causing minor flooding on Ralston creek. In Westminster...
        1 1/2 inches of rain fell... causing damage to streets and
        culverts. In addition... lightning caused some minor power
        outages across Metro Denver.
      In 1983... very heavy thunderstorms hit the southern portion of
        Metro Denver. Heavy rainfall... as much as 2.89 inches in 38
        minutes... caused widespread street flooding in southeast
        Denver. Two feet of water covered a section of I-25. Hail
        up to Golf Ball size accompanied the storm in Littleton and
        Englewood... along with 60 mph winds.
      In 1984... a heavy thunderstorm drenched Littleton with up to
        2.35 inches of rain in an hour... along with small hail that
        piled up to 2 inches deep. Flood waters were up to 4 feet
        deep in parts of town with many basements flooded. There
        were some power outages caused by lightning.
      In 1990... a thunderstorm dumped 1.25 inches of rain in 12
        minutes near tower and Smoky Hill roads in southeast
        Aurora. Minor street flooding was reported in the area.
      In 1992... a pilot reported two funnel clouds near Cherry Creek
        Reservoir. Both dissipated quickly. Dime size hail fell
        near Franktown.
      In 1994... one inch diameter hail fell near Strasburg. No
        damage was reported.
      In 1999... a dog kennel east of Denver International Airport...
        was flooded when a small dam... upstream in Elbert County...
        was breached. The floodwaters... up to 4 feet deep... washed
        away some 6-foot fences and other small buildings. Ten of
        the 70 dogs boarded at the kennel drowned.
      In 2002... a mail Carrier was struck by lightning as he
        inserted a key into a multi-unit mailbox in Bailey.
        The shock knocked the man back against the mail truck.
        He suffered minor injuries. Lightning struck a residence
        in Commerce City. The resulting fire destroyed the roof
        of a detached garage and damaged much of its contents.
        Hail as large as 1 3/4 inches in diameter pelted Pine.
        One inch diameter hail fell in Arvada and southwest Denver.
        Heavy rain triggered a mudslide along U.S. Highway 285
        near Bailey. Both lanes of traffic had to be closed
        until debris could be removed from the Highway. Several
        residences in the Bailey and Glenisle areas were also
        flooded.
      In 2004... heavy thunderstorm rainfall caused localized flash
        flooding in Virginia Canyon near Idaho Springs. Sections
        of the Virginia Canyon Road had to be closed due to the
        floodwaters.
      In 2008... a severe thunderstorm produced large hail... up to
        1 1/4 inches in diameter... northeast of Parker. Several
        automobiles were damaged.
6 in 1877... a severe rain... hail... and wind storm struck Denver.
        The storm produced a one minute sustained wind speed of
        75 mph. Rainfall totaled 1.00 inch in 25 minutes. The
        hail storm damaged vegetable gardens in the city.
      In 1954... an unconfirmed tornado was reported in Westminster.
        A funnel cloud was sighted in the area... but it was not
        certain if it had touched down. No damage was reported.
      In 1980... the temperature reached 100 degrees... setting a new
        record high for the date.
      In 1982... 3/4 inch diameter hail was reported in north Denver.
        Heavy rain caused street flooding in central Denver where
        4 to 5 feet of water inundated I-25... closing the freeway
        for a while. Rainfall across Metro Denver ranged up to
        2.35 inches in just over an hour. An estimated 2000
        basements were flooded. Only 0.01 inch of rain fell at
        Stapleton International Airport.
      In 1991... heavy rain caused flooding at the Junction of I-25
        and I-70. Dime size hail was reported northeast of Boulder
        near Niwot.
      In 1995... microburst winds gusting as high as 58 mph caused
        minor damage to an apartment complex in Broomfield. Some
        homes under construction were also damaged when the winds
        knocked over 2 by 4 wood beams along with some insulation
        and roofing materials... which broke a few windows.
        Microburst winds also overturned a Camper near Barr Lake.
      In 1996... hail ranging in size from 1 to 1 1/2 inches fell
        near Bennett.
      In 2001... 3/4 inch hail fell in the foothills near Conifer.
      In 2008... a record daily rainfall record was set at Denver
        International Airport. The record of 1.29 inches in 24
        hours broke the previous record of 1.10 inches set in
        1929.
7 in 1948... a brief west moving tornado was sighted 3 miles
        north-northeast of Stapleton Airport. The white funnel
        silhouetted against a gray cloud background was very
        narrow... nearly vertical... and estimated at nearly 5 thousand
        feet high. A dust cloud formed on the ground around The
        Funnel. No damage was reported.
      In 1952... a thunderstorm wind gust to 52 mph was recorded at
        Stapleton Airport.
8 in 1874... swarms of grasshoppers invaded the city. Millions
        of them were seen cruising through the air. The insects
        were apparently picked up by a thunderstorm gust front
        and carried into the city. The grasshoppers had ravaged
        crops in surrounding counties for the last month.
      In 1878... the highest temperature ever recorded in Denver... 105
        degrees... occurred at 3:20 PM. This temperature was equaled
        on July 20th in 2005.
      In 1969... the temperature reached 100 degrees at Stapleton
        International Airport.
      In 1976... in Thornton... a 13 year old boy riding a bicycle was
        struck and killed by lightning.
      In 2000... lightning struck three homes in central Arapahoe
        County east of Denver. Damage was estimated at 47 thousand
        dollars.
      In 2003... hail to 1 inch in diameter pelted Denver. Hail to
        7/8 inch was measured in Boulder.
      In 2008... heavy rain also caused flash flooding over south
        Denver and its nearby suburbs. Heavy rain... from 2.5 to 4
        inches... fell in less than 90 minutes. Firefighters rescued
        20 people as the water quickly rose along creeks... flooded
        roadways... and stranded motorists. Three people had to be
        rescued along Cherry Creek when the bike path flooded. In
        Evergreen... a man suffered minor injuries when he was struck
        by lightning. It entered his finger... traveled down his body...
        and exited his foot.
8-10 in 1979... heavy thunderstorm rains on each of three
        consecutive days dumped a total of 2.22 inches of rain
        at Stapleton International Airport. The heaviest rain...
        0.95 inches... fell on the 9th. Small hail to 1/8 inch
        diameter fell on the 8th.
8-13 in 1875... clouds of grasshoppers were seen flying through
        the air on the prevailing winds during each day.


Weather Severe Map
Alaska - Record Report , Public Information Statement
Arizona - Flash Flood Warning , Flash Flood Warning , Areal Flood Advisory , Flood Watch / Flood Statement , Special Statement , Record Report
Arkansas - Flood Warning
California - Severe Thunderstorm Warning , Flash Flood Warning , Heat Advisory , Fire Weather Warning , Fire Weather Warning, Fire Weather Watch , Fire Weather Watch, Fire Weather Warning , Special Statement , Record Report , Public Information Statement
Colorado - Severe Thunderstorm Warning , Areal Flood Advisory , Special Statement , Public Information Statement
Florida - Flood Warning, Flash Flood Warning , Flood Warning , Flood Warning, Areal Flood Warning , Flash Flood Watch , Areal Flood Advisory, Areal Flood Watch , Areal Flood Watch , Coastal Hazard Statement, Areal Flood Watch , Coastal Flood Statement, Areal Flood Watch , Coastal Hazard Statement , Record Report , Public Information Statement
Georgia - Areal Flood Advisory , Record Report , Public Information Statement
Hawaii - High Surf Advisory , Record Report
Idaho - Heat Advisory , Fire Weather Watch , Record Report
Illinois - Flood Warning
Indiana - Flood Warning
Iowa - Public Information Statement
Kansas - Public Information Statement
Kentucky - Record Report , Public Information Statement
Louisiana - Flood Warning
Michigan - Beach Hazard Statement
Minnesota - Public Information Statement
Mississippi - Flood Warning
Missouri - Flood Warning , Flood Warning, Areal Flood Warning , Areal Flood Advisory , Public Information Statement
Montana - Lake Wind Advisory , Fire Weather Warning , Record Report , Public Information Statement
Nebraska - Public Information Statement
Nevada - Flash Flood Watch , Flood Watch / Flood Statement , Record Report
New Mexico - Severe Thunderstorm Warning , Flash Flood Watch , Areal Flood Advisory, Flash Flood Watch , Areal Flood Advisory
North Carolina - Coastal Flood Advisory
Ohio - Public Information Statement
Oklahoma - Flash Flood Warning , Areal Flood Advisory
Oregon - Heat Advisory , Excessive Heat Warning , Fire Weather Warning , Fire Weather Warning, Fire Weather Watch , Fire Weather Watch , Record Report
South Carolina - Record Report , Public Information Statement
South Dakota - Public Information Statement
Tennessee - Air Quality Alert
Texas - Flood Warning , Air Quality Alert , Record Report , Public Information Statement
Utah - Public Information Statement
Virginia - Public Information Statement
Washington - Heat Advisory , Excessive Heat Warning , Fire Weather Warning , Record Report
West Virginia - Public Information Statement
- Small Craft Advisory
- Special Weather Statement