Hail and Damaging Winds in Wyoming, July 15, 2019

Name: Hail and Damaging Winds in Wyoming, July 15, 2019
Start: 2019-07-15T15:59
End: 2019-07-15T18:25
Location: Wyoming

July 15, 2019 · NWS UNR · 8 events in 2 counties and zones

A thunderstorm was severe at times as it crossed southern Campbell and Weston Counties, producing large hail and strong wind gusts.

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: 8

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 thunderstorm was severe at times as it crossed southern Campbell and Weston Counties, producing large hail and strong wind gusts.

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 15, 1:11 PM MST, 2 hours 48 minutes earlier.

Area forecast discussion, Jul 15, 1:11 PM MST, 2 hours 48 minutes before

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Hazardous weather outlook, Jul 15, 4:35 AM MST, 11 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
535 AM MDT Mon Jul 15 2019

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-161300-
Harding-Perkins-Butte-Northern Meade Co Plains-Ziebach-
Northern Black Hills-Northern Foot Hills-Rapid City-
Southern Foot Hills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Pennington Co Plains-Haakon-Fall River-
Oglala Lakota-Jackson-Bennett-Mellette-Todd-Tripp-
Sturgis/Piedmont Foot Hills-Southern Meade Co Plains-
Hermosa Foot Hills-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston-Northeastern Crook-
535 AM MDT Mon Jul 15 2019 /635 AM CDT Mon Jul 15 2019/

This Hazardous Weather Outlook is for western South Dakota and
northeastern Wyoming.

.DAY ONE...Today and Tonight

Isolated to scattered strong to severe thunderstorms are expected
this afternoon and evening across the area. Large hail and
damaging winds are the main concern with any storms.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is a chance for thunderstorms on Tuesday and Wednesday,
mainly during the afternoon and evening hours. Isolated to
scattered strong to severe thunderstorms are possible on Tuesday
with hail and strong wind gusts the main threats. A few stronger
storms will be possible on Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

In the hours before

Special weather statement, Jul 15, 3:31 PM MST, 28 minutes before

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The radar

The Riverton/Lander radar (KRIW), 216 km away, was scanning. The volume nearest the first event began at 22:58 UTC.

Open the radar archive at this moment

Event by event

5 thunderstorm wind, 3 hail. Local standard time, as filed.

Thunderstorm Wind, Campbell

When: July 15, 3:59 PM MST
Where: Campbell County, 12.13 mi SW of Savageton
Measured: 63 kt (72 mph) measured gust
Reported by: Public
Coordinates: 43.770, -105.990

Hail, Campbell

When: July 15, 4:20 PM MST
Where: Campbell County, 8 mi S of Savageton
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 43.754, -105.790

Hail, Campbell

When: July 15, 4:26 PM MST
Where: Campbell County, 7 mi S of Savageton
Measured: 1.25 in hail
Reported by: Storm Chaser
Coordinates: 43.769, -105.790

Hail, Campbell

When: July 15, 4:28 PM MST
Where: Campbell County, 8 mi SSE of Savageton
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 43.763, -105.729

Thunderstorm Wind, Campbell

When: July 15, 4:28 PM MST
Where: Campbell County, 8 mi SSE of Savageton
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 43.763, -105.729

Wind gusts were estimated at 60 mph.

Thunderstorm Wind, Weston

When: July 15, 5:55 PM MST
Where: Weston County, 6 mi WNW of Newcastle
Measured: 50 kt (58 mph) measured gust
Reported by: AWOS
Coordinates: 43.893, -104.311

Thunderstorm Wind, Weston

When: July 15, 6:00 PM MST to 6:25 PM MST
Where: Weston County, 2 mi NNE of Four Corners
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 44.107, -104.125

Tree branches were broken and a screen was damaged by the wind gusts.

Thunderstorm Wind, Weston

When: July 15, 6:14 PM MST
Where: Weston County, 2 mi NNE of Four Corners
Measured: 54 kt (62 mph) measured gust
Reported by: Public
Coordinates: 44.107, -104.125

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 2019 Every state in 2019 This day in weather history Warnings in Wyoming, July 2019

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: 840267, 840269, 840270, 840271, 840273, 840274, 840275, 840276.