Public Information Statement
Issued by NWS Denver/Boulder, CO
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. 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
16-18 In 1997...an 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 Watkins...in 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 2000...an 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 Airport...an 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 garages...living rooms and bedrooms of nearby