Public Information Statement
Issued by NWS Denver/Boulder, CO
NOUS45 KBOU 210959
Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MST SAT JAN 21 2017
...Today in metro Denver weather history...
14-21 In 1930...a protracted cold spell occurred when low temperatures
plunged below zero on 8 consecutive days. The coldest low
temperatures of 20 degrees below zero on the 17th and 19
degrees below zero on the 16th were record minimums for
the dates. High temperatures during the period ranged from
18 on the 18th to zero on the 20th. Two degrees on the
15th was a record low maximum temperature for the date.
15-23 In 1962...a protracted cold spell kept metro Denver in the
deep freeze for more than a week. From the 15th thru the
23rd...low temperatures were zero or below for 9 consecutive
days...but a daily record low was set only on the 22nd when
the temperature dipped to 14 degrees below zero. A record
low maximum for the date was also set on the 22nd when the
temperature climbed to only 11 degrees. The coldest high
temperature was 3 degrees above zero on the 21st...which did
not break the record. The protracted cold was broken for
only a few hours on the afternoon of the 20th when chinook
winds warmed the temperature to a high of 38 degrees before
another surge of cold Arctic air plunged temperatures
back into the deep freeze that evening. The severe cold
caused much damage to water systems. A woman was frozen to
death at Morrison. There were other deaths attributable to
the weather...including traffic deaths and heart attacks
18-24 In 2005...a week of mid-winter unseasonably warm weather
pushed high temperatures into the 60`s or more on all
but one day. During the period...the highest temperature
of 70 degrees on the 20th was a new record maximum for
the date. Low temperatures remained above freezing on
4 of the days.
20-21 In 1973...a major storm produced 7.5 inches of snowfall at
Stapleton International Airport where north winds gusted
to 32 mph causing some blowing snow.
In 2002...high winds developed over portions of the northern
mountains and Front Range foothills. Several trees were
blown down in Gilpin County along State Highways 119 and
46. Wind gust reports included: 90 mph 11 miles north
of Central City...83 mph near Fritz Peak...76 mph at Aspen
Springs...and 80 mph at Nederland. West winds gusted to
only 39 mph at Denver International Airport on the 20th.
20-22 In 1937...a second incursion of cold Arctic in less than two
weeks kept temperatures in the deep freeze for three days...
even though only one temperature record was set during the
period. Temperatures were below zero for an estimated 53
consecutive hours. The below zero period would have
been longer had the temperatures on the 20th not climbed
to a high of 1 degree after a low of 8 degrees below zero.
On the 21st...the high temperature of 1 degree below zero
was a record low maximum for the date. Low readings on
both the 21st and 22nd were 9 degrees below zero.
In 1971...high winds raked Boulder. Wind gusts to 77 mph were
recorded at the National Center for Atmospheric Research.
Winds gusted to 83 mph in south Boulder and to 68 mph in
downtown Boulder. Minor personal injuries occurred...and
reported damage to structures totaled 15 thousand dollars.
On the 21st...northwest winds gusted to 44 mph at Stapleton
International Airport. The chinook winds warmed the
temperature to a high of 69 degrees on the 20th...which
equaled the record for the date.
In 1993...sporadic high winds along the east slopes of the
Front Range during the early morning hours of the 20th
moved onto the foothills and plains by the 22nd. Wind
gusts of 55 to 65 mph were common. Some significant wind
reports included 82 mph at Rollinsville and atop Squaw
Mountain west of Denver...and 75 mph on Rocky Flats. At
Stapleton International Airport...west winds gusted to 35
mph on the 20th...44 mph on the 21st...and 55 mph on the
21 In 1897...west winds were sustained to 40 mph with gusts to
45 mph. The warm chinook winds produced a high temperature
of 51 degrees and a low temperature of 36 degrees.
In 1943...strong west winds gusted to 92 mph at Boulder
Airport. Strong winds were common along the foothills.
Some damage occurred.
In 1950...wind gusts to 50 mph produced some blowing dust at
In 1997...high winds along the Front Range foothills caused
an empty 18-wheeler to overturn on I-70 near the Morrison
and C-470 exits. The truck landed on top of a passenger
car traveling beside it. The drivers received only minor
injuries. West-northwest winds gusted to 36 mph at Denver
In 2007...two storm systems...one moving to the south and east
of the region...and the other brushing from the west...
contributed to heavy snow along the Front Range Foothills...
Urban Corridor and adjacent plains. The heaviest snow fell
south and east of Denver where a blizzard developed during
the late morning and early afternoon hours. In and near the
Front Range Foothills and Palmer Divide...storm totals ranged
from 6 to 15 inches. Very strong winds produced extensive
blowing and drifting snow along I-70...from just east of
Denver to near Limon. Sustained winds from 30 to 45 mph
were measured with peak gusts to 60 mph. As a result...snow
drifts 2 to 4 feet in depth made some roads impassable with
whiteout conditions reported. North winds gusted to 40 mph
at Denver International Airport. Snowfall totaled 6.1
inches at the site of the former Stapleton International
21-22 In 1972...wind gusts to 74 mph were recorded at the National
Bureau of Standards in Boulder...while in downtown Boulder
wind gusts to 56 mph were measured. The strong winds
overturned a plane at the Arapahoe County Airport. A
motorcyclist died of injuries when he was blown off a
Boulder County road. Northwest winds gusted to 39 mph
at Stapleton International Airport on the 21st.
In 1999...heavy snow developed across portions of metro
Denver and in the foothills. Snowfall totals included:
8 inches in Golden Gate Canyon...Intercanyon...Rollinsville...
and Parker; 7 inches at Aspen Springs...Gross Reservoir...
Pine Junction...and 5 miles south of Sedalia; 6 inches at
Highlands Ranch; and 5 inches at Eaglecrest...Eldorado
Springs...and Louisville. Snowfall totaled 2.6 inches at
the site of the former Stapleton International Airport.
On the 21st...north-northwest winds gusted to 31 mph at
Denver International Airport.