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Colorado, South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet

Public Information Statement

Statement as of 2:59 AM MDT on July 28, 2014


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

13-5 in 2008... a streak of 24 consecutive days of 90 degrees
        shattered the previous record of 18 consecutive days
        established in 1901 and 1874. Ironically... no new single
        day record high temperatures were set in the month of July.
        In August however... a record of 104 degrees was set on the
        1st... and another record of 103 degrees was set on the 2nd.
        In addition... a record low min of 70 degrees was set on
        August 2nd.
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.
27-31 in 1956... 96 percent of the total precipitation for the month
        of July occurred over the last five days of the month.
        Heavy thunderstorms produced 4.00 inches of rainfall at
        Stapleton Airport. This amount of precipitation in 5 days
        or less had been exceeded only 3 times in previous record.
        The last time had been in December of 1913 as snow.
        Considerable property damage occurred across Metro Denver
        from flooding.
28 in 1882... intense thunderstorm lightning struck a number of
        places in the city... but no significant damage was reported.
      In 1910... heavy thunderstorm rainfall totaled 2.21 inches in
        downtown Denver. Rainfall was 1.11 inches in an hour during
        the early afternoon.
      In 1922... heavy rainfall to the south of Denver caused Cherry
        Creek to rise to the top of the retaining walls in the city.
        The creek did not flood; however... the large volume of water
        discharged into the South Platte river did inundate a few
        blocks of globeville. Flooding also occurred along bayou
        creek near Franktown to the south of the city.
      In 1923... thunderstorm winds were sustained to 38 mph with
        gusts to 52 mph.
      In 1957... iridescent cirrocumulus clouds of unusual formation
        and Brilliant color... oriented from southwest to northeast
        over Metro Denver... were sighted by U.S. Weather Bureau
        observers at Stapleton Airport shortly after noon.
      In 1966... heavy rains from a severe thunderstorm caused flash
        flooding on Deer Creek... southwest of Littleton. A child was
        injured when washed from a car caught in the flood waters.
        The flooding damaged property along the creek. Strong winds
        damaged several houses in suburban Littleton.
      In 1970... a microburst wind gust to 52 mph was recorded at
        Stapleton International Airport.
      In 1974... a tornado was sighted just east of Buckley field in
        Aurora. No damage was reported.
      In 1982... up to 2.50 inches of rain drenched an area just
        southwest of Denver in 30 minutes. This was the second day
        of heavy rain across portions of Metro Denver.
      In 1984... 1.25 inches of rain fell in 45 minutes in Arvada.
        Minor flooding occurred on Bear Creek after a small dam
        broke.
      In 1989... lightning killed two men in Arvada. They were taking
        wash from a clothesline when a Bolt hit the older man... 39...
        killing him instantly. The Bolt then traveled along the
        line... which was stretched between 2 tall trees... and hit his
        26-year-old brother who died the next day.
      In 1996... several weak tornadoes developed along a thunderstorm
        outflow boundary that moved into southern Weld... northern
        Jefferson... and Adams counties. The tornadoes sighted near
        Bennett... Barr Lake... and in Arvada caused little damage.
        Strong thunderstorm winds downed several trees in the city
        of Denver and toppled several trees 7 miles west of Arvada
        where shingles were blown off several houses. Thunderstorm
        wind gusts reached 58 mph in Broomfield.
      In 1997... a weak tornado touched down briefly in Parker...
        damaging a greenhouse. Twenty pieces of the fiberglass
        roof were ripped away. Heavy rainfall in the foothills
        washed out some culverts in the Pine and Conifer areas.
        Heavy rainfall spread over the plains with 4 to 7 inches
        reportedly falling near Hudson. Several County roads
        were washed out between Fort Lupton and Hudson. Several
        basements in the area were flooded up to the ceiling.
        Standing water... up to 3 feet deep... was reported in some
        backyards. Later in the evening... a flash flood killed
        5 people and injured 40 others in two Mobile home Parks
        in Fort Collins. The torrential rainfall also caused
        extensive damage on the Colorado State University Campus.
        Thunderstorm rainfall totaled 0.80 inch at Denver
        International Airport and 1.09 inches at the site of
        the former Stapleton International Airport.
      In 1999... heavy rainfall... up to 3 inches an hour... triggered
        a massive rock and mudslide along I-70 near Bakerville.
        The slide area was about 200 feet wide and 20 feet deep.
        Several other smaller slides were also reported along
        the Highway. As a result... I-70 was closed for nearly
        25 hours in both directions until the debris could be
        cleared from the roadway. The blockage of I-70 was one
        of the longest in the history of the Highway in Colorado.
        A severe thunderstorm produced a wind gust to 64 mph at
        Denver International Airport. The storm also produced
        1.56 inches of rain and briefly reduced the visibility
        to 1/4 mile.
      In 2004... a severe thunderstorm produced hail as large as
        1 inch in diameter in Thornton.
      In 2010... a wet microburst produced very heavy rain and
        torrential hail in Boulder County... in the vicinities of
        Caribou... Nederland and Eldora. Flash flooding washed
        out sections of County roads 126 and 128 near Caribou.
        Several large boulders had fallen across the roadways.
        Considerable flooding was reported in Nederland.
        Water was also observed running across County Road
        130... between Eldora and Nederland. The hail had
        accumulated up to 8 inches deep near Eldora. Several
        vehicles were stuck in the ice... forcing the temporary
        closure of cr130 and the Lake Eldora ski Road until
        snowplows could clear away the hail. Lightning strikes
        caused minor damage to two local businesses in
        Nederland. At Denver International Airport... a
        thunderstorm produced 0.30 inches of rain along with a
        peak wind gust to 38 mph.
      In 2012... a tornado touched down briefly at the southeast
        corner of Mt. Evans near Lincoln Lake. The estimated
        elevation where this tornado touched down was near
        12500 feet. This would make this tornado one of the
        highest ever observed in the U.S.
28-30 in 1889... dense smoke from Forest fires in the mountains
        obscured the sun over the city for three days.
      In 1971... a vigorous cold front late on the 28th produced
        northeast wind gusts to 39 mph and record breaking cold
        temperatures on the 29th and 30th. The temperature dipped
        to 47 degrees on the 29th and 43 degrees on the 30th...
        setting record minimums for the dates. Upslope cloudiness
        along with rain and fog early on the 29th helped set a
        record low maximum temperature of 58 degrees for the date.


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