Severe Wildfire ● Closed
Red Flag Warning issued September 13 at 10:03AM MDT until September 14 at 8:00PM MDT by NWS Riverton WY, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Monday. the Fire
Weather Watch is no longer in effect.
* AFFECTED AREA:
In Central WY Fire Zones...280...283...289...300.
In Southwest WY Fire Zone....279.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
erratic fire behavior.
* WIND: West 20 to 30 mph with gusts up to 40 to 50 mph.
* HUMIDITY: As low as 10 to 15 percent.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Natrona County/Casper BLM; Upper Wind River Basin/Wind River Basin; Granite/Green/Ferris/Rattlesnake |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-09-14T07:00:00-06:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 36 days ago (Sep 13, 2026 16:05 UTC) · we last heard from WMO Alert Hub (national weather services) 10 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Natrona County/Casper BLM; Upper Wind River Basin/Wind River Basin; Granite/Green/Ferris/Rattlesnake
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Defensible space, evacuation go-bags, smoke protection, and returning home safely after a wildfire.
Open Wildfire Safety Guide →Earlier wildfire events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.