Wyoming, 2003

Winter Storm in Wyoming, November 21, 2003

November 21, 2003 · NWS UNR · 1 event in 1 county or zone

A strong winter storm moved across the Rockies and into the Central Plains, bringing heavy snows to parts of Northeast Wyoming. Snow increased in intensity during the early morning and continued through much of the day.

Where it happened

Every event with a place to put it; 1 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
1

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 UNR wrote it up.

A strong winter storm moved across the Rockies and into the Central Plains, bringing heavy snows to parts of Northeast Wyoming. Snow increased in intensity during the early morning and continued through much of the day. Snow then began to taper off during the evening. Snowfall amounts across the Northeast Wyoming Plains were generally in the 3 to 6 inch range. Across the Wyoming Black Hills, snowfall totals of 8 to 12 inches were common, with up to 16 inches falling near Four Corners.

The radar

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

Open the radar archive at this moment

Event by event

1 winter storm. Local standard time, as filed.

Winter Storm, Wyoming Black Hills

When
November 21, 12:00 AM MST to 9:00 PM MST
Where
Wyoming Black Hills forecast zone
Reported by
TRAINED SPOTTER
Coordinates
44.215, -104.569 (the zone’s center; the record gives no point)

What these are

Winter Storm
A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.

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

The same day elsewhere

More

Every storm in Wyoming in 2003Every state in 2003This day in weather historyWarnings in Wyoming, November 2003

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: 5328078.