Red Flag Warning — Natrona County/Casper BLM; Johnson County/Casper BLM; South Bighorn Mountains; Casper Mountain was recorded by Global Incident Tracker on Monday, 10 August 2026 at 08:23 UTC. The event is classified as a storm incident with a severity rating of Severe, and was detected through the US National Weather Service (NWS).
Red Flag Warning issued August 10 at 2:23AM MDT until August 10 at 9:00PM MDT by NWS Riverton WY The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...Strong Gusty Winds...and Dry Thunderstorms with gusty and erratic outflow winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Washakie. * WIND: West 10 to 20 mph with gusts up to 30 mph. * THUNDERSTORMS: Will have the best chances in zones 280, 289 and 300. Wind gusts up to 55 mph will be possible from outflows. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the lower 90s; highs in the 80s in zones 285 and 300.
Where this happened
The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.
Approximate coordinates of the reported event are 37.100°, -95.700°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.
Understanding storm events
Severe thunderstorms, windstorms, hail and winter storms. Severe storms combine wind, lightning, hail and sudden downpours. Secondary effects — falling trees, power line damage and flash flooding on roads — cause the majority of injuries.
How severity is rated
Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.
Safety guidance for storm situations
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Data and verification
This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.
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Timeline and sources
Official warning
Issued by U.S. National Weather Service. A warning or forecast describes a hazard; on its own it is not a report that harm occurred.
How statuses are decided · the number of reports is never treated as confirmation.
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· received · event time 10 Aug 2026, 08:23 UTCFirst report Official warning
First recorded from U.S. National Weather Service.
Times are when this site received each report, in UTC; the event time is shown where the source gave one. Copies of one syndicated story count as one report.
Conditions at the time
No rainfall was recorded that day, and the temperature peaked at 38°C. Conditions are shown for context only — they do not establish a cause.
Weather reanalysis for this location and date via Open-Meteo.