Colorado, 2020

Winter Weather in Colorado, November 23 to 24, 2020

November 23 to 24, 2020 · NWS BOU · 5 events in 5 counties and zones

A storm system brought a period of moderate to heavy snowfall to areas in and near the Front Range mountains and foothills. Storm totals in the mountains generally ranged from 5 to 10 inches, with one station reporting 14 inches.

Where it happened

Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
5

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BOU wrote it up.

A storm system brought a period of moderate to heavy snowfall to areas in and near the Front Range mountains and foothills. Storm totals in the mountains generally ranged from 5 to 10 inches, with one station reporting 14 inches. In foothills of Boulder and Jefferson counties, as well as Denver and some of the western suburbs, storms totals ranged from 2 to 6 inches.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

5 winter weather. Local standard time, as filed.

Winter Weather, S & E Jackson / Larimer / N & Ne Grand / Nw Boulder Counties Above 9000 Feet

When
November 23, 8:00 AM MST to November 24, 8:00 PM MST
Where
S & E Jackson / Larimer / N & Ne Grand / Nw Boulder Counties Above 9000 Feet forecast zone
Reported by
SNOTEL
Coordinates
40.382, -105.820 (the zone’s center; the record gives no point)

Storms totals included 7 inches at Joe Wright, with 4.5 inches 4 miles southeast of Gould.

Winter Weather, S & Se Grand / W Central & Sw Boulder / Gilpin / Clear Creek / Summit / N & W Park Counties Above 9000 Feet

When
November 23, 8:00 AM MST to November 24, 8:00 PM MST
Where
S & Se Grand / W Central & Sw Boulder / Gilpin / Clear Creek / Summit / N & W Park Counties Above 9000 Feet forecast zone
Reported by
SNOTEL
Coordinates
39.726, -105.675 (the zone’s center; the record gives no point)

Storms totals included: 14 inches at Michigan Creek SNOTEL, 10 inches at Echo Lake and Rough and Tumble SNOTELs; with 7 inches at Niwot Ridge.

Winter Weather, Jefferson & W Douglas Counties Above 6000 Feet / Gilpin / Clear Creek / Ne Park Counties Below 9000 Feet

When
November 23, 8:00 AM MST to November 24, 8:00 PM MST
Where
Jefferson & W Douglas Counties Above 6000 Feet / Gilpin / Clear Creek / Ne Park Counties Below 9000 Feet forecast zone
Reported by
SNOTEL
Coordinates
39.516, -105.413 (the zone’s center; the record gives no point)

Storms totals included: 6.5 inches in Bailey, 6 inches at Aspen Springs, and 5 inches, 4 miles west-northwest of Conifer.

Winter Weather, Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County

When
November 24, 1:00 AM MST to 12:00 PM MST
Where
Boulder & Jefferson Counties Below 6000 Feet / W Broomfield County forecast zone
Reported by
SNOTEL
Coordinates
39.878, -105.220 (the zone’s center; the record gives no point)

Storms totals included 5 inches, 7 miles south of Lyons and at Wheat Ridge, with 3 inches at Ralston Reservoir.

Winter Weather, N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County

When
November 24, 1:00 AM MST to 12:00 PM MST
Where
N Douglas County Below 6000 Feet / Denver / W Adams & Arapahoe Counties / E Broomfield County forecast zone
Reported by
Trained Spotter
Coordinates
39.714, -104.707 (the zone’s center; the record gives no point)

Storms totals included: 6 inches, 5 miles northeast of Westminster; 5 inches in Brighton and Denver International Airport, with 2 to 3 inches elsewhere.

What these are

Winter Weather
Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2020Every state in 2020This day in weather historyWarnings in Colorado, November 2020

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 930060, 930061, 930062, 930063, 930065.