Damaging Wind in Wyoming, July 6, 2001

Name: Damaging Wind in Wyoming, July 6, 2001
Start: 2001-07-06T19:15
End: 2001-07-06T19:15
Location: Wyoming

July 6, 2001 · NWS UNR · 1 event in 1 county or zone

At least one roof was blown off and damage to buildings were reported. Several tree limbs and power lines were down as well.

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

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The toll

Deaths: 0
Injuries: 0
Property damage: $5,000
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.

At least one roof was blown off and damage to buildings were reported. Several tree limbs and power lines were down as well.

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 Jul 6, 1:30 PM MST, 5 hours 45 minutes earlier.

Area forecast discussion, Jul 6, 1:30 PM MST, 5 hours 45 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
230 PM MDT FRI JUL 6 2001

20Z SURFACE ANALYSIS HAD WEAKENING RIDGE OVER EASTERN MT...WHICH HAD
PUSHED COLD FRONT EAST OF THE CWA. WATER VAPOUR SHOWED DECENT
SHORTWAVE OVER SOUTHWEST WY...NORTH CENTRAL WY AND SOUTHWEST
UT...ALL ROTATING AROUND UPPER RIDGE PARKED OVER CO/NE BORDER. CAPE
MODEST THIS AFTERNOON OVER NORTHEAST WY...AND AREA CURRENTLY
CAPPED...BUT PRESSURE FALLS OVER MT/WY ALLOWING WINDS TO BECOME MORE
SOUTHEASTERLY BRINGING MID TO UPPER 50 DEW POINT AIR BACK INTO THE
AREA ON THE BACK SIDE OF SURFACE RIDGE. SHEAR SUFFICIENT FOR
ORGANIZED CONVECTION. TYPICAL SUMMERTIME WEATHER EXPECTED FOR NEXT 7
DAYS.

12Z ETA/NGM/AVN INITIALIZED ALRIGHT AND AT 18Z REPRESENTED REALITY.
UPPER RIDGE WILL WOBBLE ACROSS THE ROCKIES/NORTHERN PLAINS THROUGH
NEXT WEEK. AN UNENDING PARADE OF SHORTWAVES WILL AFFECT THE AREA.
THIS WEEKEND...THE BEST WAVE WILL MOVE THROUGH SAT NIGHT/SUN...
REFOCUSING SURFACE BOUNDARY ACROSS THE AREA. RIGHT ENTRANCE REGION
OF ND/CANDADIAN JET WILL PROVIDE ADDITIONAL SUPPORT. THAT WILL BE
OUR BEST CHANCE OF TSRA THIS WEEKEND.

3OTHERWISE...FORECAST SOUNDINGS GENERALLY SUPPORT READINGS SLIGHTLY
WARMER THAN GUIDANCE WILL GO WITH THAT.

IN THE EXTENDED...THE BEAT GOES ON.

.UNR...NONE

HELGESON

The radar

The Rapid City radar (KUDX), 127 km away, was scanning. The volume nearest the first event began at 02:16 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Weston

When: July 6, 7:15 PM MST
Where: Weston County, Osage
Measured: 70 kt (81 mph)
Property damage: $5,000
Reported by: LAW ENFORCEMENT
Coordinates: 43.967, -104.400

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

Every storm in Wyoming in 2001 Every state in 2001 This day in weather history Warnings in Wyoming, July 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: 5260024.