Colorado, 2000

Heavy Snow in Colorado, September 23, 2000

September 23, 2000 · NWS GJT · 2 events in 2 counties and zones

A cold upper low from the north produced the first significant snowfall of the season over the mountains of northwest Colorado. 6 to 12 inches of snow fell across this area, with 12 inches reported on Yellowjacket Pass.

Where it happened

Every event with a place to put it; 2 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
2

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 GJT wrote it up.

A cold upper low from the north produced the first significant snowfall of the season over the mountains of northwest Colorado. 6 to 12 inches of snow fell across this area, with 12 inches reported on Yellowjacket Pass. The Tower RAWS site, 10 miles east of Steamboat Springs, also received 12 inches of snow.

The radar

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

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Event by event

2 heavy snow. Local standard time, as filed.

Heavy Snow, Elkhead and Park Mountains

When
September 23, 3:30 AM MST to 5:00 PM MST
Where
Elkhead and Park Mountains forecast zone
Reported by
TRAINED SPOTTER
Coordinates
40.552, -107.599 (the zone’s center; the record gives no point)

Heavy Snow, Flattop Mountains

When
September 23, 3:30 AM MST to 5:00 PM MST
Where
Flattop Mountains forecast zone
Reported by
TRAINED SPOTTER
Coordinates
40.062, -107.603 (the zone’s center; the record gives no point)

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

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

The same day elsewhere

More

Every storm in Colorado in 2000Every state in 2000This day in weather historyWarnings in Colorado, September 2000

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 2026-09-24. Each event’s entry at NCEI: 5174323, 5174324.