Hail and Damaging Winds in Wyoming, July 18, 2025

Name: Hail and Damaging Winds in Wyoming, July 18, 2025
Start: 2025-07-18T15:12
End: 2025-07-18T18:17
Location: Wyoming

July 18, 2025 · NWS RIW · 3 events in 3 counties and zones

A shortwave crossed central Wyoming and brought localized severe weather. A 62 mph wind gust was reported along Interstate 25 near Midwest in northern Natrona County.

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: 3

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 RIW wrote it up.

A shortwave crossed central Wyoming and brought localized severe weather. A 62 mph wind gust was reported along Interstate 25 near Midwest in northern Natrona County. A Cocorahs member reported penny size hail southwest of Powell. In the evening, a 59 mph wind gust was reported at the Pistol Draw RAWS site.

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 Riverton, WY wrote its last area forecast discussion before the first event at Jul 18, 2:45 PM MST, 27 minutes earlier.

Area forecast discussion, Jul 18, 2:45 PM MST, 27 minutes before

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Hazardous weather outlook, Jul 18, 1:57 AM MST, 13 hours 15 minutes before

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In the hours before

Special weather statement, Jul 18, 12:13 PM MST, 2 hours 59 minutes before

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Special weather statement, Jul 18, 12:27 PM MST, 2 hours 45 minutes before

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Special weather statement, Jul 18, 2:25 PM MST, 47 minutes before

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Special weather statement, Jul 18, 2:29 PM MST, 43 minutes before

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Special weather statement, Jul 18, 2:36 PM MST, 36 minutes before

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Special weather statement, Jul 18, 2:40 PM MST, 32 minutes before

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The radar

The Riverton/Lander radar (KRIW), 174 km away, was scanning. The volume nearest the first event began at 22:11 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Natrona

When: July 18, 3:12 PM MST to 3:30 PM MST
Where: Natrona County, 6 mi WNW of Midwest
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 43.453, -106.391

Hail, Park

When: July 18, 4:30 PM MST to 4:35 PM MST
Where: Park County, 5 mi SW of Powell
Measured: 0.75 in hail
Reported by: CoCoRaHS
Coordinates: 44.699, -108.822

Thunderstorm Wind, Washakie

When: July 18, 6:17 PM MST
Where: Washakie County, 8.47 mi S of (Wrl)worland Muni Ar
Measured: 51 kt (59 mph) measured gust
Reported by: RAWS
Coordinates: 43.849, -107.923

A 59 mph wind gust was reported at the Pistol Draw RAWS site.

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.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

Every storm in Wyoming in 2025 Every state in 2025 This day in weather history Warnings in Wyoming, July 2025

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 2026-09-30. Each event’s entry at NCEI: 1284617, 1284618, 1284619.