⛈️
Red Flag Warning
◍ Central Siskiyou County Including Shasta Valley · USA · updated 8/21/2026, 4:02:00 AM
⏱ In effect until 6:00 AM UTC-7
Severity score
65/100
Confidence
High
Why this matters
A Red Flag Warning has also been issued from 2 PM to 9 PM PDT Friday. * IMPACTS...Gusty winds combined with low RH could lead to the rapid spread of any new or existing fires. * AFFECTED AREA...In California...Fire weather zones 281, including the Shasta Valley. * WIND...South to southwest 15 to 25 mph with gusts to 30 mph. * HUMIDITY...Minimum humidity 12 to 17 percent. * DETAILED URL...View
Key stats
Severity
Severe
Certainty
Likely
Urgency
Expected
Severity over time
Timeline
- Red Flag Warning8/21/2026, 4:02:00 AMRed Flag Warning issued August 20 at 9:02PM PDT until August 21 at 9:00PM PDT by NWS Medford OR
Sources & attribution
OfficialNWS NWS Medford ORupdated 8/21/2026, 4:02:00 AM
OfficialNWS NWS Jackson KYupdated 8/21/2026, 9:59:00 AM
OfficialNWS NWS Los Angeles/Oxnard CAupdated 8/21/2026, 9:57:00 AM
OfficialNWS NWS Wilmington OHupdated 8/21/2026, 9:42:00 AM
OfficialNWS NWS Wilmington OHupdated 8/21/2026, 9:41:00 AM
OfficialNWS NWS Grand Forks NDupdated 8/21/2026, 9:38:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS San Francisco CAupdated 8/21/2026, 9:36:00 AM
OfficialNWS NWS Seattle WAupdated 8/21/2026, 9:30:00 AM
OfficialNWS NWS Memphis TNupdated 8/21/2026, 9:01:00 AM
OfficialNWS NWS Binghamton NYupdated 8/21/2026, 8:51:00 AM
OfficialNWS NWS Binghamton NYupdated 8/21/2026, 8:34:00 AM
OfficialNWS NWS Marquette MIupdated 8/21/2026, 8:26:00 AM
OfficialNWS NWS Albany NYupdated 8/21/2026, 7:51:00 AM
OfficialNWS NWS Grand Forks NDupdated 8/21/2026, 7:49:00 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 Gaylord MIupdated 8/21/2026, 7:10:00 AM
OfficialNWS NWS Wakefield VAupdated 8/21/2026, 7:04:00 AM
OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:41:00 AM
OfficialNWS NWS Grand Rapids MIupdated 8/21/2026, 6:25:00 AM
OfficialNWS NWS Binghamton NYupdated 8/21/2026, 6:23:00 AM
OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:22:00 AM
OfficialNWS NWS Grand Rapids MIupdated 8/21/2026, 6:21:00 AM
OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:20:00 AM
OfficialNWS NWS Tiyan GUupdated 8/21/2026, 6:07:00 AM
OfficialNWS NWS Baltimore MD/Washington DCupdated 8/21/2026, 5:51:00 AM
OfficialNWS NWS Pittsburgh PAupdated 8/21/2026, 5:50:00 AM
OfficialNWS NWS Louisville KYupdated 8/21/2026, 5:04:00 AM
OfficialNWS NWS State College PAupdated 8/21/2026, 4:33:00 AM
OfficialNWS NWS Charleston WVupdated 8/21/2026, 4:21:00 AM
OfficialNWS NWS Jackson KYupdated 8/21/2026, 4:15:00 AM
OfficialNWS NWS Medford ORupdated 8/21/2026, 4:02:00 AM
OfficialNWS NWS Medford ORupdated 8/21/2026, 4:02:00 AM
OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM
OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM
OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM
OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM
OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM
OfficialNWS NWS Fairbanks AKupdated 8/20/2026, 11:49:00 PM
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, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:51:00 PM
OfficialNWS NWS Spokane WAupdated 8/20/2026, 10:25:00 PM
OfficialNWS NWS Spokane WAupdated 8/20/2026, 10:25:00 PM
OfficialNWS NWS Denver COupdated 8/20/2026, 10:10:00 PM
OfficialNWS NWS Fort Worth TXupdated 8/20/2026, 8:36:00 PM
OfficialNWS NWS Portland ORupdated 8/20/2026, 8:33:00 PM
OfficialNWS NWS Memphis TNupdated 8/20/2026, 8:22:00 PM
OfficialNWS NWS Tulsa OKupdated 8/20/2026, 7:54:00 PM
OfficialNWS NWS Norman OKupdated 8/20/2026, 7:35:00 PM
OfficialNWS NWS Phoenix AZupdated 8/20/2026, 4:09:00 PM
OfficialNWS NWS Pendleton ORupdated 8/20/2026, 4:00:00 PM
OfficialNWS NWS Pendleton ORupdated 8/20/2026, 4:00:00 PM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/20/2026, 10:25:00 AM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
OfficialNWS NWS Anchorage AKupdated 8/19/2026, 10:18:00 PM
⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.