California Severe Red Flag Warning | Effective 06/18/2026 12:51

Headline: 
Red Flag Warning issued June 18 at 12:51PM PDT until June 19 at 7:00PM PDT by NWS Medford OR
Event: 
Red Flag Warning
Urgency: 
Expected
Effective: 
June 18, 2026 - 12:51pm
Expires: 
June 19, 2026 - 1:00am
Description: 
...Scattered dry and wet thunderstorms develop on Friday... .An upper level low will inject elevated moisture to the region by Friday morning. Storms will track towards the north through the day. A mix of dry and wet storms will provide abundant lightning to the region through Friday evening. The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 8 AM to 7 PM PDT Friday. The Fire Weather Watch is no longer in effect. * IMPACTS...Abundant lightning on dry fuels will likely create new ignitions across the region. Any fires that develop could spread rapidly. Numerous new fire starts could overwhelm initial attack. * AFFECTED AREA...Fire weather zones 280,281,284 and 285 in California. The majority of Siskiyou and Modoc Counties. * THUNDERSTORMS...Moving north around 20 to 25 mph. Storm mode will be a mix of dry and wet thunderstorms. * OUTFLOW WINDS...Gusts up to 35 mph. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr
Instruction: 
Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spread of fire which may become life- threatening. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities.
Area Description: 
Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley
Forcast Office: 
NWS Medford OR
Sender: 
w-nws.webmaster@noaa.gov