Wyoming, 2001

Damaging Winds in Wyoming, May 1, 2001

May 1, 2001 · NWS UNR · 2 events in 1 county or zone

An small line of thunderstorms moved along the Montana/Wyoming border shortly after midnight. The line of storms was associated with a potent upper level shortwave.

Where it happened

Every event with a place to put it. 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

Open the live radar over this ground

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 UNR wrote it up.

An small line of thunderstorms moved along the Montana/Wyoming border shortly after midnight. The line of storms was associated with a potent upper level shortwave. Outflow from these storms produced a strong and persistent gust front across Campbell County.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Rapid City, SD wrote its last area forecast discussion before the first event at Apr 30, 8:10 PM MST, 4 hours 57 minutes earlier.

Area forecast discussion, Apr 30, 8:10 PM MST, 4 hours 57 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
910 PM MDT MON APR 30 2001

CURRENT FCST ON TRACK. WL UPDATE FOR TIMING OF CLOUDS AND WL TWEEK
WINDSa ABIT.

.UNR...NONE.

The radar

The Rapid City radar (KUDX), 217 km away, was scanning. The volume nearest the first event began at 08:07 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Campbell

When
May 1, 1:07 AM MST
Where
Campbell County, Gillette Arpt
Measured
60 kt (69 mph)
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
44.350, -105.533

Thunderstorm Wind, Campbell

When
May 1, 1:42 AM MST
Where
Campbell County, Echeta
Measured
75 kt (86 mph)
Reported by
PARK/FOREST SERVICE
Coordinates
44.433, -105.850

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

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

The same day elsewhere

More

Every storm in Wyoming in 2001Every state in 2001This day in weather historyWarnings in Wyoming, May 2001

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: 5246911, 5246910.