Public Information Statement
Issued by NWS Denver/Boulder, CO
NOUS45 KBOU 100859
Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT MON APR 10 2017
...Today in metro Denver weather history...
7-12 In 1959...snow falling over a 5-day period totaled 20 to 30
inches just east of the mountains...while over the plains
blizzard conditions closed schools and blocked highways.
The second big storm in two weeks dumped 16.4 inches of
snowfall on Stapleton Airport with the most...11.6 inches...
occurring on the 8th. East winds gusted to 37 mph on the
9th. Temperatures dipped into the single digits on the
mornings of the 7th and 12th when 7 degrees were
registered. The cold temperatures caused streets to
glaze with ice...resulting in the death of a pedestrian
who was struck by a car in Denver. Three people died from
heart attacks while shoveling the heavy...wet snow.
8-10 In 1999...a windstorm caused 20 million dollars in damage
along the Front Range Urban Corridor from Fort Collins
south to Pueblo and to the east over the plains...making
the storm equal to the costliest windstorm ever...which
occurred in Boulder on January 17...1982. In metro Denver...
several homes were damaged as shingles were blown off roofs.
Large pieces of a roof torn off a strip mall in Lakewood
damaged several cars in a parking lot. Most of the damage
to homes consisted of broken fences...awnings...doors...and
windows. Scores of automobiles suffered broken or cracked
windshields and paint damage from flying debris. Multiple
accidents were triggered as several tractor-trailer rigs
were blown on their sides by the strong cross-winds.
Blowing dust and dirt caused near zero visibilities at
times. Both I-25 and I-76 were closed north and northeast
of Denver. State Highway 93 was closed between Golden and
Boulder. Several trees...power poles...and power lines were
downed...causing a number of outages as well as sparking a
few small grass fires. Highest wind gusts reached 112 mph
atop Niwot Ridge near the Continental Divide west of
Boulder...102 mph at Wondervu...100 mph at the National Center
for Atmospheric Research Mesa Lab in Boulder...98 mph at the
National Wind Technology Center near Broomfield...96 mph on
Rocky Flats...92 mph at Jefferson County Airport near
Broomfield and on the University of Colorado campus in
Boulder...and 90 mph at Highlands Ranch in southwest metro
Denver. Winds gusted to 48 mph at Denver International
9-10 In 1900...rain changed to heavy snow and totaled 6.8 inches
in downtown Denver overnight. A thunderstorm occurred
on the 9th. North winds were sustained to 32 mph with
gusts to 38 mph on the 10th. Precipitation totaled
In 1933...post-frontal heavy snowfall totaled 9.4 inches
in downtown Denver. East winds were sustained to 21 mph
with gusts to 22 mph on the 9th.
In 1944...7.0 inches of snow fell on downtown Denver.
Northeast winds were sustained to 24 mph on the 9th.
In 1977...the two warmest days of the month resulted in two
temperature records being set. High temperature of 81
degrees on the 9th set a new record maximum for the date.
High temperature of 80 degrees on the 10th equaled the
record maximum for the date. The unusually warm weather
for so early in April produced a late afternoon
thunderstorm on the 10th.
In 1993...strong downslope winds occurred along the Front
Range. While the strongest winds were in the foothills
north of Denver...wind gusts to 69 mph were recorded at
Jefferson County Airport in Broomfield. Northwest winds
gusted to 39 mph at Stapleton International Airport.
In 2004...a spring storm brought heavy snow to metro Denver.
The heaviest snow fell in the foothills and over and near
higher terrain. Snowfall totals included: 20 inches
near Jamestown; 18 inches atop Gold Hill; 17 inches near
Evergreen; 15 inches at Nederland and Eldora; 13 inches
at Blackhawk; 11 inches at Aspen Springs; 9 inches in
Louisville; 8 inches at Ken Caryl; 6 inches at Niwot...
near Sedalia...and in Thornton; 5 inches in Lakewood...
Lyons...and Westminster. Snowfall was 4.4 inches at
Denver Stapleton. Northwest winds gusted to 21 mph
at Denver International Airport.
In 2008...A very moist storm brought heavy snow to parts
of the Front Range Foothills. Storm totals included:
12.5 inches at Aspen Springs...11 inches just southwest
of Conifer; with 10.5 inches near Central City and
6 miles southwest of Evergreen. Lesser amounts of 5
to 9 inches were observed elsewhere. North winds
gusted to 43 mph at Denver International Airport on the
10th...and 1.8 inches of snow fell at the former Stapleton
9-11 In 1951...heavy snowfall totaled 9.4 inches at Stapleton
Airport. The storm was accompanied by strong northeast
winds gusting to 43 mph.
In 1953...heavy snowfall occurred at Stapleton Airport where
7.9 inches of snow were measured. North winds gusted to
In 1994...6 to 14 inches of heavy snow buried much of eastern
Colorado...closing many schools and I-70 from east of Denver
to the Kansas border. Rain changed to snow on the 9th...and
snow continued through the 11th. Snowfall totaled 5.7
inches at Stapleton International Airport...but maximum
snow depth on the ground was only 3 inches on the 10th due
to melting. East winds gusted to 26 mph on the 9th.
In 1995...a major spring storm dumped 8 to 16 inches of snow
in the foothills west of Denver. Snowfall totaled 8.3
inches at the site of the former Stapleton International
Airport...but most of the snow melted as it fell with the
maximum snow depth on the ground of only 2 inches. Five-to
6-inch snow accumulations occurred over southern portions
of metro Denver and eastward onto the plains. Northeast
winds gusted to 36 mph at Denver International Airport on
the 10th. I-70 was closed for several hours east of
Watkins to the Kansas border due to drifting snow and near
whiteout conditions. High temperature of only 29 degrees
on the 10th was a record low maximum for the date.
9-12 In 1901...rain changed to snow and totaled 10.8 inches in
downtown Denver over the 4 days. Northeast winds were
sustained to 28 mph with gusts to 31 mph on the 11th.
Temperatures hovered in the 30`s.
10 In 1896...southwest winds were sustained to 40 mph with
gusts to 60 mph. The apparent chinook winds warmed the
temperature to a high of 76 degrees.
In 1899...northwest chinook winds were sustained to 45 mph
with gusts as high as 60 mph. The downslope winds warmed
the temperature to a high of 73 degrees in the city.
10-11 In 1979...a heavy snow storm produced near-blizzard conditions
across eastern Colorado with 10 to 20 inches in the
foothills and 4 to 8 inches over the plains. Winds to
35 mph combined with the snow to produce drifts at least
3 feet deep...closing many roads and causing power outages.
Travel was interrupted south of Denver when the storm
closed both I-25 and State Highway 83. Snowfall totaled
only 3.8 inches at Stapleton International Airport where
northeast winds gusted 37 mph...causing some blowing snow on
In 2001...a potent spring storm dumped heavy snow over metro
Denver and the adjacent foothills...while a blizzard roared
across the plains to the east of Denver. Snowfall amounts
ranged up to a foot and a half across metro Denver and in
the foothills. North to northwest winds at sustained speeds
of 40 to 50 mph with gusts as high as 60 mph piled the
snow into drifts of 3 to 6 feet deep. I-25 southbound was
closed at Lincoln Avenue. I-70 to the east was closed at
Gun Club Road. The combination of heavy wet snow and
damaging winds resulted in widespread electrical outages.
Denver International Airport was completely shut down for
the first time in its brief 6-year history. Power surges
and outages crippled the airport`s massive computer systems.
The airport was closed at 5:00 AM and did not re-open until
mid-afternoon on the 11th. The power outages resulted in
businesses and schools closing. Over all of northeastern
Colorado...there were 220 thousand customers without power...
the worst outage in Xcel Energy`s history. Repairs totaled
1.6 million dollars. Across metro Denver...snow totals
included: 18 inches in southeast Aurora...16 inches at
Centennial Airport and Parker...14 inches at Broomfield...
13 inches in Louisville...12 inches at Lakewood and Morrison...
11 inches at Ken Caryl and Thornton...10 inches at the site
of the former Stapleton International Airport and in Wheat
Ridge...9 inches in Westminster...and 8 inches in Littleton.
Thunderstorms preceded the start of the snow on the
afternoon of the 10th and were embedded in the snow storm
during the early morning hours of the 11th at Denver
International Airport where northwest winds gusted to
60 mph on the 11th. Snow storm totals in the foothills
included: 17 inches at Genesee...16 inches at Rollinsville...
14 inches at Intercanyon...13 inches in Coal Creek Canyon
and near Evergreen...11 inches at Aspen Springs and Chief
Hosa...10 inches at Blackhawk...and 9 inches atop Crow Hill.
In 2005...a strong spring storm produced blizzard conditions
in areas to the east of Denver and south of I-76 and near-
blizzard conditions across metro Denver. The combination
of heavy snow and strong winds forced the closure of Denver
International Airport...stranding thousands of travelers.
Long stretches of I-25...I-70...and I-76 were also closed
due to extensive blowing and drifting snow. Snow amounts
ranged from 1 to 2.5 feet in and near the eastern foothills
and over the Palmer Divide. Drifts were 2 to 5 feet in
depth. Downed power lines caused scattered electrical
outages. Storm total snowfall amounts in and near the
foothills included: 31 inches near Conifer; 27.5 inches in
Aspen Springs; 25.5 inches near Sedalia and Blackhawk; 25
inches near Bergen Park and around Genesee; 24.5 inches at
Pine Junction and Roxborough Park; 24 inches southwest of
Boulder; 23.5 inches at Ken Caryl; 23 inches atop Crow
Hill and near Larkspur...Evergreen...and Nederland; 21 inches
at Eldora Ski Area; 18 inches at Eldorado Springs and near
Castle Rock; 17 inches near Chatfield Reservoir and Perry
Park; and 16 inches near Jamestown. Across the city storm
total snow amounts were: 22.5 inches in Aurora; 22 inches
at Bennett; 20 inches near Arapahoe Park and in Centennial...
Littleton...and south Denver; 17.5 inches near Bennett; 16
inches in Thornton; 15 inches in Lakewood; 14.5 inches in
Wheat Ridge and near Englewood; 14 inches at Lone Tree and
in Arvada; and 9.9 inches at Denver Stapleton. North winds
were sustained from 25 to 35 mph with gusts to 46 mph at
Denver International Airport on the 10th.
10-12 In 1997...a Pacific storm produced heavy snow on the 10th and
the 11th in and near the foothills with 6 to 8 inches at
Louisville and Turkey Creek Canyon...5 inches at Morrison...
and only 3.5 inches at the site of the former Stapleton
International Airport. Northeast winds gusted to 24 mph
at Denver International Airport. The storm also brought
unseasonably cold weather with 5 new temperature records
equaled or broken. Record low temperatures of 8 and
6 occurred on the 11th and 12th. Record low maximum
temperatures of 20...19...and 30 occurred on the 10th...11th...
and 12th respectively. This was also only the second
time on record that the temperature had failed to reach
the freezing mark for 3 consecutive days in April.
10-14 In 1927...post-frontal rain on the 10th changed to snow on
the 11th and continued through the 14th. Snowfall totaled
8.5 inches from precipitation of 1.28 inches. North winds
were sustained to 26 mph with gusts to 29 mph on the 13th.