Colorado, 2016

Winter Weather in Colorado, November 17 to 18, 2016

November 17 to 18, 2016 · NWS BOU · 4 events in 4 counties and zones

Bands of moderate to heavy snow fell along the Interstate 70 corridor as strong fast moving storm system moved across Colorado. Wet roads quickly became icy and snowpacked.

Where it happened

Every event with a place to put it; 4 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
4

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.

Bands of moderate to heavy snow fell along the Interstate 70 corridor as strong fast moving storm system moved across Colorado. Wet roads quickly became icy and snowpacked. A 20-vehicle crash involving semis kept both directions of I-70 closed near Evergreen for a couple of hours. Storm totals in the north central mountains ranged from 7 to 14 inches, with 5 to 10 inches of snow in the Front Range Foothills.

The radar

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

Open the radar archive at this moment

Event by event

4 winter weather. Local standard time, as filed.

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

When
November 17, 5:00 AM MST to November 18, 5:00 AM 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)

Storm totals included: 14 inches at Joe Wright, 13 inches at Lake Irene, 10 inches at Bear Lake; with 7 inches at Long Dray Reservoir, Never Summer, Phantom Valley, Wild Basin and Willow Park.

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

When
November 17, 5:00 AM MST to November 18, 5:00 AM 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)

Storm totals included 7 inches at Arapahoe Basin and Loveland ski areas, with 6 inches at Copper Mountain.

Winter Weather, Larimer & Boulder Counties Between 6000 & 9000 Feet

When
November 17, 5:00 AM MST to November 18, 5:00 AM MST
Where
Larimer & Boulder Counties Between 6000 & 9000 Feet forecast zone
Reported by
Trained Spotter
Coordinates
40.380, -105.410 (the zone’s center; the record gives no point)

Storm totals included 7 inches at Aspen Springs and Rollinsville, with lesser amounts of 3 to 6 inches elsewhere.

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

When
November 17, 5:00 AM MST to November 18, 5:00 AM MST
Where
Jefferson & W Douglas Counties Above 6000 Feet / Gilpin / Clear Creek / Ne Park Counties Below 9000 Feet forecast zone
Reported by
Trained Spotter
Coordinates
39.516, -105.413 (the zone’s center; the record gives no point)

Storm totals included: 11.5 inches, 4.5 miles south-southeast of Idaho Springs; 8 inches, 5 miles west of Evergreen; 7.5 inches near Conifer, with 4 to 7 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 2016Every state in 2016This day in weather historyWarnings in Colorado, November 2016

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: 666232, 666233, 666234, 666235.