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Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT THU OCT 9 2025

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

8-9   In 2017...an early season snowstorm produced heavy wet snow
        which broke branches and downed power lines.  About ninety-
        eight thousand outages occurred in Denver and the
        surrounding metro area. Almost half the outages were very
        short...while 54210 were sustained outages that lasted
        longer than five minutes.  Some however lasted for several
        hours. Snow amounts varied greatly along the Interstate 25
        Corridor. West of I-25...storm totals included: 7.5 inches
        in Arvada...7 inches in Broomfield...6 inches Boulder and
        Louisville...with 5 inches at Ralston Reservoir. East of
        I-25...storm totals ranged from a trace to 4 inches. In
        the mountains and foothills...storm totals included: 12.5
        inches near Genesee...10 inches at Eldorado Springs...
        Idledale and Nederland...with 8.5 inches near Jamestown.
9     In 1910...light smoke from forest fires in the mountains was
        sighted over the city.
      In 1982...northwest winds gusted to 49 mph at Stapleton
        International Airport.
9-10  In 2005...from the 9th to the 10th...a major winter storm
        brought heavy...wet snowfall to the Front Range Mountains...
        eastern foothills...portions of metro Denver...and the
        Palmer Divide.  Snow accumulations ranged from 8 to 26
        inches with drifts from 3 to 4 feet in places.  The
        heaviest snow occurred to the east and southeast of the
        city...closing most major highways in that area...including
        I-70 from Denver to Limon.  The Red Cross opened four
        shelters for people who were stranded along I-70 in
        eastern Colorado.  Since many trees had not yet shed
        their leaves...the storm caused significant tree
        damage.  One woman in Denver was killed when a tree
        branch...8 to 10 inches in diameter...snapped under the
        weight of the heavy...wet snow and struck her as she was
        shoveling her driveway.  Xcel Energy reported power
        outages to about 35 thousand customers.  Several
        incoming flights were delayed at Denver International
        Airport.  Snow totals included:  16 inches in the
        foothills near Boulder...12 inches at Genesee and near
        Golden...22 inches near Watkins...19 inches near
        Bennett...17 inches southeast of Aurora...14 inches near
        Parker...13 inches near Castle Rock...12 inches in Centennial...
        11 inches in Parker...and 10 inches at Denver International
        Airport and in Littleton.  While many areas of metro Denver
        received heavy snow...others experienced almost entirely rain.
        This included west and northwest metro Denver...Boulder...and
        Longmont.  Rainfall amounts were significant as storm totals
        ranged between 1.50 and 2.50 inches.  The steady rainfall
        triggered 3 rockslides in foothills canyons.  Two of the
        slides occurred on State Highway 119 in Boulder Canyon and
        the longest slide...7 feet in length...on State Highway 74 in
        Bear Creek Canyon at Idledale.  North winds were sustained
        to around 23 mph with gusts to 31 mph at Denver International
        Airport on the 9th.  The high temperature of only 34 degrees
        on the 10th was a record low maximum for the date.  The low
        temperature on both days was 32 degrees.
      In 2019...a vigorous winter like storm system brought intense
        northerly winds and the cold front blasted through the urban
        corridor. Peak wind gusts from 50 to 60 mph accompanied the
        front. Some trees in Denver were uprooted by the strong
        winds. Light rain and drizzle overnight...changed over to the
        season`s first snow during the predawn hours of the 10th.
        Bands of moderate to heavy snow brought 2 to 6 inches of
        snow in the Front Range mountains...foothills and urban
        corridor. The morning commute was especially hazardous as
        falling temperatures froze wet roads. Multiple crashes
        occurred including: I-25 in Denver...I-70 from Denver west
        to the Eisenhower Tunnel and State Highway 285 towards
        Fairplay.  Over 300 crashes were reported in Denver and
        Aurora alone. After reaching a maximum temperatures of
        83 degrees on the afternoon of the 9th...the temperature
        plummeted to 13 degrees on the 10th. A temperature change
        of 70 degrees...the second largest 2-day swing for the
        month of October in Denver weather history.

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