Alert archive / Wyoming / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 3, NWS Riverton, WY

May 16, 2019Big Horn County, Washakie County, Wyoming

NWS Riverton, WY issued this severe thunderstorm warning at May 16, 2019, 7:39 PM MDT for Big Horn County, Washakie County, Wyoming. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 16, 2019, 7:39 PM MDT (01:39 UTC)
Expired: May 16, 2019, 8:15 PM MDT
In force: 36 min
Issued by: NWS Riverton, WY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Big Horn County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 138 km from the middle of the area, began a volume at 01:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at May 16, 5:32 PM MDT, 2 hours 7 minutes earlier.

Area forecast discussion, May 16, 5:32 PM MDT, 2 hours 7 minutes before

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Hazardous weather outlook, May 16, 2:53 PM MDT, 4 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Riverton WY
253 PM MDT Thu May 16 2019

WYZ001>020-022>030-171300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
253 PM MDT Thu May 16 2019

This Hazardous Weather Outlook is for Western and Central
Wyoming.

.DAY ONE...Rest of Today and Tonight

Isolated to scattered thunderstorms late this afternoon and
evening. A few strong to severe thunderstorms are possible,
especially in the northern Big Horn Basin and Johnson County until
sunset.

Dry, warm, and windy conditions will lead to elevated fire
weather conditions in Sweetwater County and portions of central
Wyoming.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Friday...A chance of showers and thunderstorms. Light snow
possible in the mountains.

Sunday through Wednesday...A chance of showers and isolated
thunderstorms each day.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Special weather statement, May 16, 5:20 PM MDT, 2 hours 19 minutes before

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Special weather statement, May 16, 5:31 PM MDT, 2 hours 8 minutes before

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Local storm report, May 16, 5:33 PM MDT, 2 hours 6 minutes before

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Special weather statement, May 16, 5:44 PM MDT, 1 hour 55 minutes before

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Special weather statement, May 16, 5:50 PM MDT, 1 hour 49 minutes before

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Special weather statement, May 16, 5:59 PM MDT, 1 hour 40 minutes before

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The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 6:05 PM MDT	Special Weather Statement	RIW	Johnson	40 min
May 16, 6:23 PM MDT	Special Weather Statement	RIW	Fremont	22 min
May 16, 6:31 PM MDT	Special Weather Statement	RIW	Big Horn	44 min
May 16, 6:42 PM MDT	Special Weather Statement	RIW	Sheridan	33 min
May 16, 6:46 PM MDT	Special Weather Statement	RIW	Hot Springs	44 min
May 16, 7:03 PM MDT	Special Weather Statement	RIW	Washakie	27 min
May 17, 10:13 AM MDT	Special Weather Statement	RIW	Johnson	32 min
May 17, 10:46 AM MDT	Special Weather Statement	RIW	Johnson	29 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2019 Every severe thunderstorm warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.