Alert archive / Wyoming / Special Weather Statements in 2020

Special Weather Statement, NWS Cheyenne, WY

August 4, 2020

NWS Cheyenne, WY issued this special weather statement at Aug 4, 2020, 6:34 PM MDT. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 4, 2020, 6:34 PM MDT (00:34 UTC)
Expired
Aug 4, 2020, 7:15 PM MDT
In force
41 min
Issued by
NWS Cheyenne, WY

The radar

The Riverton/Lander radar (KRIW), 139 km from the middle of the area, began a volume at 00:35 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.

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this special weather statement went out at Aug 4, 5:53 PM MDT, 41 minutes earlier.

Area forecast discussion, Aug 4, 5:53 PM MDT, 41 minutes before
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Hazardous weather outlook, Aug 4, 4:40 AM MDT, 13 hours 54 minutes before
Hazardous Weather Outlook
National Weather Service Cheyenne WY
440 AM MDT Tue Aug 4 2020

WYZ104-109>114-051045-
Ferris/Seminoe/Shirley Mountains-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
440 AM MDT Tue Aug 4 2020

This hazardous weather outlook is for portions of south central
Wyoming.

.DAY ONE...TODAY AND TONIGHT

Isolated to widely scattered afternoon and early evening
thunderstorms will develop. Storms may produce strong, gusty
winds and dry lightning.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Decreasing thunderstorm potential day by day as the area dries out
under the influence of a ridge. Fire weather conditions will be
the concern.

.Spotter information statement...

Spotter activation will not be required.

NEZ002-003-019>021-054-055-095-096-WYZ101>103-105>108-115>119-
051045-
Dawes-Box Butte-Scotts Bluff County-Banner County-Morrill-
Kimball County-Cheyenne-North Sioux-South Sioux-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Shirley Basin-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Laramie Valley-
South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
440 AM MDT Tue Aug 4 2020

This hazardous weather outlook is for portions of panhandle
Nebraska...western Nebraska...east central Wyoming...south
central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Widely scattered thunderstorms will develop over the Laramie
Range around noon and move eastward into the High Plains by
mid-afternoon, reaching the western Nebraska Panhandle by late
afternoon. Severe storms capable of producing large hail and
strong gusty winds are possible.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Scattered afternoon and evening thunderstorms will develop
through Thursday, becoming more isolated and confined to the
mountains Friday and Saturday. Strong to severe thunderstorms
producing large hail and strong gusty winds will be possible
along and east of the Interstate 25 corridor Wednesday; an
isolated tornado cannot be ruled out.

.Spotter information statement...

Spotter activation may be needed this afternoon and Wednesday
afternoon along and east of the I-25 corridor.

In the hours before

Special weather statement, Aug 4, 3:35 PM MDT, 2 hours 59 minutes before
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Special weather statement, Aug 4, 3:44 PM MDT, 2 hours 50 minutes before
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Special weather statement, Aug 4, 5:10 PM MDT, 1 hour 24 minutes before
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Special weather statement, Aug 4, 6:17 PM MDT, 17 minutes before
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Special weather statement, Aug 4, 6:34 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 6:17 PM MDTSpecial Weather StatementCYSAlbany43 min
Aug 4, 7:00 PM MDTSpecial Weather StatementCYSAlbany45 min
Aug 4, 7:42 PM MDTSpecial Weather StatementCYS33 min
Aug 4, 7:59 PM MDTSpecial Weather StatementCYSCarbon46 min
Aug 4, 8:45 PM MDTSpecial Weather StatementCYSAlbany45 min
Aug 4, 9:28 PM MDTSpecial Weather StatementCYSAlbany, Platte47 min
Aug 4, 10:50 PM MDTSpecial Weather StatementCYSGoshen, Laramie, Platte40 min
Aug 4, 11:31 PM MDTSpecial Weather StatementCYSGoshen44 min
Aug 5, 12:21 AM MDTSpecial Weather StatementCYSLaramie24 min
Aug 5, 2:50 AM MDTRed Flag WarningCYS41 hr
Aug 5, 1:23 PM MDTSpecial Weather StatementCYSLaramie52 min
Aug 5, 1:59 PM MDTSpecial Weather StatementCYSLaramie46 min
Aug 5, 2:05 PM MDTSpecial Weather StatementCYSConverse40 min
Aug 5, 2:27 PM MDTSpecial Weather StatementCYSLaramie48 min
Aug 5, 2:34 PM MDTFire Weather WatchCYS13 hr
Aug 5, 2:45 PM MDTSpecial Weather StatementCYSPlatte45 min
Aug 5, 2:53 PM MDTSpecial Weather StatementCYSPlatte52 min
Aug 5, 3:03 PM MDTSpecial Weather StatementCYS42 min
Aug 5, 3:16 PM MDTSpecial Weather StatementCYSLaramie44 min
Aug 5, 3:42 PM MDTSpecial Weather StatementCYSAlbany48 min
Aug 5, 3:57 PM MDTSpecial Weather StatementCYSConverse48 min
Aug 5, 4:07 PM MDTSpecial Weather StatementCYSPlatte38 min
Aug 5, 4:22 PM MDTSpecial Weather StatementCYSConverse38 min
Aug 5, 4:34 PM MDTSevere Thunderstorm WarningCYSConverse28 min
Aug 5, 4:50 PM MDTSpecial Weather StatementCYSConverse40 min
Aug 5, 4:52 PM MDTSpecial Weather StatementCYSLaramie38 min
Aug 5, 4:58 PM MDTSpecial Weather StatementCYSPlatte47 min
Aug 5, 5:01 PM MDTSevere Thunderstorm WarningCYSGoshen, Platte44 min
Aug 5, 5:19 PM MDTSpecial Weather StatementCYSConverse41 min
Aug 5, 5:21 PM MDTSpecial Weather StatementCYSGoshen39 min
Aug 5, 5:34 PM MDTSpecial Weather StatementCYSPlatte41 min
Aug 5, 5:41 PM MDTSpecial Weather StatementCYSNiobrara49 min
Aug 5, 12:15 AM MDTSpecial Weather StatementCYSBanner, Kimball60 min
Aug 5, 3:50 PM MDTSpecial Weather StatementCYSBox Butte40 min
Aug 5, 3:59 PM MDTSpecial Weather StatementCYSSioux46 min
Aug 5, 4:32 PM MDTSevere Thunderstorm WarningCYSSioux43 min
Aug 5, 4:55 PM MDTSpecial Weather StatementCYSSioux50 min
Aug 5, 5:31 PM MDTSpecial Weather StatementCYSMorrill44 min

Nearby

Special Weather Statements in Wyoming, 2020Every special weather statement in 2020

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.