Severe Wildfire ● Closed
Red Flag Warning issued September 8 at 6:59PM MDT until September 10 at 9:00PM 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.
* IMPACTS: Low Humidity...Gusty Wind...and a Wind Shift in
association with a Cold Front could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY...Fire Weather Zones 280...289 and 300.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.
* COLD FRONT: Winds turn northerly after sunset Tuesday, as a dry
cold front moves south across the region.
* WIND: Wednesday, west to southwest 10 to 20 mph with gusts to
around 25 mph. Thursday, west to southwest 15 to 25 mph with
gusts up to 45 mph.
* HUMIDITY: 6 to 10 percent.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-09-09T13:00:00-06:00 |
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 40 days ago (Sep 9, 2026 01:00 UTC) · we last heard from WMO Alert Hub (national weather services) 37 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
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: Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain
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.