Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 170859

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT SUN JUL 17 2016

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

7-25  In 1934...a streak of 15 consecutive days of 90 degrees
        ranked 5th on the list of hot streaks.  The record of
        24 consecutive days was established in the summer of
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. 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.
16-18 In extended hot spell resulted in 3 temperature
        records being set.  The maximum temperature reached 98
        degrees on each of the days...setting records on the 16th
        and 18th.  The low temperature of 71 degrees on the 17th
        was a record high minimum for the date.  The high
        temperature reached 100 degrees on the 17th at the site
        of the former Stapleton International Airport.
17    In 1872...the U.S. Army Signal Service weather observer
        recorded snowfall during the early morning hours in the
        hand written daily weather journal:  "Rain commenced at
        1:30 A.M. changing about 3 A.M. to snow & in about half
        an hour to rain again; it continued until 6 A.M."  This
        is the only recorded occurrence of snowfall in Denver in
        July...but this report is not included in the "official"
        station snowfall records...which did not begin in Denver
        until January 1...1882.  The low temperature on this
        morning was 45 degrees...which is sufficiently cold for
        the occurrence of light stratiform snowfall.
      In 1918...a thunderstorm produced hail to an inch in depth
        on the ground.  The stones varied in size from a small
        cherry stone to nearly 1/2 inch in diameter.  Not much
        permanent damage was done to crops.  Precipitation
        totaled 0.40 inch...and northeast winds were sustained
        to 25 mph with gusts to 28 mph.
      In 1971...the temperature reached a high of 101 degrees at
        Stapleton International Airport.
      In 1983...3/4 inch diameter hail fell at Lafayette...while
        golf ball size hail pelted Brighton and Northglenn where
        funnel clouds were also sighted.
      In 1986...1 1/2 inches of rain fell in an hour and 15 minutes
        in southeastern Aurora.  Thunderstorm rainfall totaled
        0.89 inches at Stapleton International Airport.
      In 1987...a small tornado was sighted near the
        vicinity of Front Range Airport.
      In 1997...lightning ignited an oil well tank holding 10
        thousand gallons of oil...16 miles northwest of Bennett.
        About 200 acres of grassland burned before the fire could
        be extinguished.  A dry microburst produced a wind gust to
        52 mph at Denver International Airport.
      In estimated 2 inches of rain fell in less than an
        hour...causing two secondary roads in Buck and Miller gulches
        in the Hi Meadows fire burn area to wash out.  Water
        also covered Jefferson County Road 68 which connects to
        Bailey.  Homeowners in Pine Valley Estates attempted to
        divert some of the runoff by piling stacks of hay on the
        hillside above their homes.  Torrential rainfall...up to
        3.50 inches an hour...caused flash flooding along Whiskey
        Gulch near Elizabeth.  Several roads were washed out and
        basements flooded during the storm.  Along County Road 13...
        about 6 miles north-northwest of Elizabeth...rushing water
        washed away a 15-foot section of the road.  The floodwaters
        forced debris and mud into four huge culverts...sending water
        over the road.  At Denver International United
        Airlines ground crew worker was struck by lightning as she
        was loading a Boeing 747 jumbo jet.  The woman was injured
        when lightning either hit the jet or the loading equipment
        that she was working near.  The 25-year-old woman received
        only minor injuries.
      In 2006...outflow from severe thunderstorms to the southeast
        of metro Denver produced southeast sustained winds to 35
        mph with gusts as high as 52 mph at Denver International
        Airport during the late evening.
      In 2011...a deluge of heavy rain occurred in and around
        Nederland when the storm dumped nearly 2 inches of rain in
        30 minutes. The heavy rainfall washed out hillsides and
        dirt roads. In Nederland...a culvert became blocked with
        debris and forced the water to spread into a nearby
        bookstore. The rainfall also damaged several residential
        roads in the Sunnyside Subdivision and Navajo Road became
        impassable. Several homes suffered flood damage as the
        runoff from a nearby Beaver Creek jumped its banks and
        flooded rooms and bedrooms of nearby

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