⛈️

Red Flag Warning

◍ Yellowstone National Park · USA · updated 8/11/2026, 8:17:00 AM

⏱ In effect until 9:00 PM UTC-6

Severity score

65/100

Confidence

High

Why this matters

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...and Strong Gusty Winds...could cause erratic fire behavior. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 10 to 15 mph with g

Key stats

Severity

Severe

Certainty

Likely

Urgency

Expected

Timeline

Red Flag Warning
8/11/2026, 8:17:00 AM
Red Flag Warning issued August 11 at 2:17AM MDT until August 11 at 9:00PM MDT by NWS Riverton WY

Sources & attribution

OfficialNWS NWS Riverton WYupdated 8/11/2026, 8:17:00 AM

OfficialNWS NWS Baltimore MD/Washington DCupdated 8/11/2026, 10:30:00 AM

OfficialNWS NWS Jacksonville FLupdated 8/11/2026, 10:10:00 AM

OfficialNWS NWS Quad Cities IA ILupdated 8/11/2026, 10:03:00 AM

OfficialNWS NWS San Francisco CAupdated 8/11/2026, 9:44:00 AM

OfficialNWS NWS Seattle WAupdated 8/11/2026, 8:46:00 AM

OfficialNWS NWS Milwaukee/Sullivan WIupdated 8/11/2026, 8:15:00 AM

OfficialNWS NWS Detroit/Pontiac MIupdated 8/11/2026, 8:09:00 AM

OfficialNWS NWS Albuquerque NMupdated 8/11/2026, 5:43:00 AM

OfficialNWS NWS Green Bay WIupdated 8/11/2026, 3:51:00 AM

OfficialNWS NWS Boise IDupdated 8/11/2026, 2:50:00 AM

OfficialNWS NWS Boise IDupdated 8/11/2026, 2:39:00 AM

OfficialNWS NWS Denver COupdated 8/11/2026, 2:10:00 AM

OfficialNWS NWS Boise IDupdated 8/11/2026, 1:25:00 AM

OfficialNWS NWS Missoula MTupdated 8/11/2026, 12:45:00 AM

OfficialNWS NWS Anchorage AKupdated 8/10/2026, 11:45:00 PM

OfficialNWS NWS Spokane WAupdated 8/10/2026, 11:33:00 PM

OfficialNWS NWS Missoula MTupdated 8/10/2026, 10:38:00 PM

OfficialNWS NWS Denver COupdated 8/10/2026, 10:11:00 PM

OfficialNWS NWS Boise IDupdated 8/10/2026, 7:18:00 PM

OfficialNWS NWS Spokane WAupdated 8/10/2026, 6:27:00 PM

OfficialNWS NWS Missoula MTupdated 8/10/2026, 6:09:00 PM

OfficialNWS NWS Portland ORupdated 8/10/2026, 5:46:00 PM

OfficialNWS NWS Riverton WYupdated 8/10/2026, 5:30:00 PM

OfficialNWS NWS Medford ORupdated 8/10/2026, 4:58:00 PM

OfficialNWS NWS Phoenix AZupdated 8/10/2026, 4:56:00 PM

OfficialNWS NWS Billings MTupdated 8/10/2026, 4:54:00 PM

OfficialNWS NWS Pendleton ORupdated 8/10/2026, 4:49:00 PM

OfficialNWS NWS Rapid City SDupdated 8/10/2026, 4:36:00 PM

OfficialNWS NWS Boise IDupdated 8/10/2026, 4:31:00 PM

OfficialNWS NWS Great Falls MTupdated 8/10/2026, 1:35:00 PM

OfficialNWS NWS Anchorage AKupdated 8/10/2026, 12:25:00 PM

OfficialNWS NWS Anchorage AKupdated 8/9/2026, 11:52:00 PM

⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.