Alert archive / Wyoming / Special Weather Statements in 2025

Special Weather Statement, NWS Riverton, WY

July 4, 2025Fremont County, Wyoming

NWS Riverton, WY issued this special weather statement at Jul 4, 2025, 10:21 PM MDT for Fremont County, Wyoming. It was in force for 39 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
Jul 4, 2025, 10:21 PM MDT (04:21 UTC)
Expired
Jul 4, 2025, 11:00 PM MDT
In force
39 min
Issued by
NWS Riverton, WY
Hail
0.00 in
Wind
50

County Fremont County, WY

The radar

The Riverton/Lander radar (KRIW), 31 km from the middle of the area, began a volume at 04:20 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 Riverton, WY wrote its last area forecast discussion before this special weather statement went out at Jul 4, 7:48 PM MDT, 2 hours 33 minutes earlier.

Area forecast discussion, Jul 4, 7:48 PM MDT, 2 hours 33 minutes before
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Hazardous weather outlook, Jul 4, 2:40 AM MDT, 19 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Riverton WY
240 AM MDT Fri Jul 4 2025

WYZ001>020-022>030-051245-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn 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-
240 AM MDT Fri Jul 4 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight.

Multiple rounds of showers and thunderstorms will move through the
state today. The first round is expected to begin developing by the
late morning with the next following shortly behind during the early
afternoon. A later round develops by the late afternoon lingering
into the late evening hours. A few isolated strong to severe storms
cannot be ruled out. These stronger storms may be capable of
producing small hail, heavy downpours, and strong gusty winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...Thunderstorms develop once again in the afternoon with
coverage being more limited in nature. Convection chances look to
remain mainly across central and northern WY. Some strong to severe
storms will be possible, especially across the eastern Bighorn Basin
into Johnson and Natrona Counties. These strong to severe storms will
be capable of producing large hail, strong gusty winds, and an
isolated tornado or two.

Sunday through Thursday...Drier and warmer weather is expected to
develop and prevail across the region. This will likely lead to
increased chances for elevated fire weather conditions for much of
the state.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

In the hours before

Special weather statement, Jul 4, 7:44 PM MDT, 2 hours 37 minutes before
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Special weather statement, Jul 4, 8:14 PM MDT, 2 hours 7 minutes before
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Special weather statement, Jul 4, 9:14 PM MDT, 1 hour 7 minutes before
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Special weather statement, Jul 4, 9:42 PM MDT, 39 minutes before
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Special weather statement, Jul 4, 9:47 PM MDT, 34 minutes before
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Special weather statement, Jul 4, 10:21 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 6:02 PM MDTSpecial Weather StatementRIWNatrona28 min
Jul 4, 6:15 PM MDTSpecial Weather StatementRIWJohnson45 min
Jul 4, 7:17 PM MDTSpecial Weather StatementRIWUinta43 min
Jul 4, 7:42 PM MDTSpecial Weather StatementRIW33 min
Jul 4, 7:44 PM MDTSpecial Weather StatementRIWSublette31 min
Jul 4, 8:14 PM MDTSpecial Weather StatementRIWSublette46 min
Jul 4, 9:14 PM MDTSpecial Weather StatementRIWFremont16 min
Jul 4, 9:42 PM MDTSpecial Weather StatementRIWFremont33 min
Jul 4, 9:47 PM MDTSpecial Weather StatementRIWFremont28 min
Jul 5, 10:30 AM MDTSpecial Weather StatementRIW45 min
Jul 5, 11:10 AM MDTSpecial Weather StatementRIW35 min
Jul 5, 11:42 AM MDTSpecial Weather StatementRIWPark33 min
Jul 5, 1:02 PM MDTSpecial Weather StatementRIWSublette28 min
Jul 5, 1:17 PM MDTSevere Thunderstorm WarningRIWSublette13 min
Jul 5, 1:22 PM MDTSevere Thunderstorm Warning Considerable damage threatRIWSublette23 min
Jul 5, 1:46 PM MDTSpecial Weather StatementRIWBig Horn44 min
Jul 5, 2:22 PM MDTSpecial Weather StatementRIWSublette23 min
Jul 5, 2:35 PM MDTSpecial Weather StatementRIWBig Horn25 min
Jul 5, 3:17 PM MDTSpecial Weather StatementRIWBig Horn28 min
Jul 5, 4:49 PM MDTSpecial Weather StatementRIWSheridan26 min

Nearby

Special Weather Statements in Wyoming, 2025Every special weather statement in 2025

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.