⛈️

Red Flag Warning

◍ Upper Snake River Valley/Idaho Falls BLM · USA · updated 8/21/2026, 6:41:00 PM

⏱ In effect until 6:00 AM UTC-6

Severity score

65/100

Confidence

High

Why this matters

...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED ON SATURDAY DUE TO SCATTERED THUNDERSTORM ACTIVITY ACROSS MUCH OF EASTERN IDAHO... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from noon to 9 PM MDT Saturday. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 422 Sawtooth R

Key stats

Severity

Severe

Certainty

Likely

Urgency

Expected

Timeline

Red Flag Warning
8/21/2026, 6:41:00 PM
Red Flag Warning issued August 21 at 12:41PM MDT until August 22 at 9:00PM MDT by NWS Pocatello ID

Sources & attribution

OfficialNWS NWS Pocatello IDupdated 8/21/2026, 6:41:00 PM

OfficialNWS NWS Boston/Norton MAupdated 8/21/2026, 6:51:00 PM

OfficialNWS NWS Boise IDupdated 8/21/2026, 6:48:00 PM

OfficialNWS NWS Glasgow MTupdated 8/21/2026, 6:39:00 PM

OfficialNWS NWS Northern Indianaupdated 8/21/2026, 6:24:00 PM

OfficialNWS NWS Northern Indianaupdated 8/21/2026, 6:23:00 PM

OfficialNWS NWS Reno NVupdated 8/21/2026, 6:22:00 PM

OfficialNWS NWS Grand Rapids MIupdated 8/21/2026, 6:20:00 PM

OfficialNWS NWS Spokane WAupdated 8/21/2026, 5:55:00 PM

OfficialNWS NWS Wilmington NCupdated 8/21/2026, 5:43:00 PM

OfficialNWS NWS Greenville-Spartanburg SCupdated 8/21/2026, 5:42:00 PM

OfficialNWS NWS Columbia SCupdated 8/21/2026, 5:41:00 PM

OfficialNWS NWS Raleigh NCupdated 8/21/2026, 5:40:00 PM

OfficialNWS NWS Newport/Morehead City NCupdated 8/21/2026, 5:40:00 PM

OfficialNWS NWS Spokane WAupdated 8/21/2026, 5:19:00 PM

OfficialNWS NWS Pendleton ORupdated 8/21/2026, 5:16:00 PM

OfficialNWS NWS Juneau AKupdated 8/21/2026, 5:04:00 PM

OfficialNWS NWS Norman OKupdated 8/21/2026, 4:50:00 PM

OfficialNWS NWS Medford ORupdated 8/21/2026, 4:30:00 PM

OfficialNWS NWS Phoenix AZupdated 8/21/2026, 4:18:00 PM

OfficialNWS NWS Boston/Norton MAupdated 8/21/2026, 4:13:00 PM

OfficialNWS NWS Marquette MIupdated 8/21/2026, 2:41:00 PM

OfficialNWS NWS Reno NVupdated 8/21/2026, 2:37:00 PM

OfficialNWS NWS Brownsville TXupdated 8/21/2026, 1:24:00 PM

OfficialNWS NWS Fairbanks AKupdated 8/21/2026, 11:46:00 AM

OfficialNWS NWS Anchorage AKupdated 8/21/2026, 10:46:00 AM

OfficialNWS NWS Anchorage AKupdated 8/21/2026, 10:22:00 AM

OfficialNWS NWS Memphis TNupdated 8/21/2026, 9:01:00 AM

OfficialNWS NWS Marquette MIupdated 8/21/2026, 7:31:00 AM

OfficialNWS NWS Norman OKupdated 8/21/2026, 7:19:00 AM

OfficialNWS NWS Tiyan GUupdated 8/21/2026, 7:11:00 AM

OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:41:00 AM

OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:22:00 AM

OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:20:00 AM

OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM

OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM

OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM

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