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Home Return to list Fire Weather Warning 0001 Issued by the Sacramento Forecast Office
Action: New Issued At: 2026-05-15 12:52:21 501 WWUS86 KSTO 151751 RFWSTO URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 1051 AM PDT Fri May 15 2026 CAZ124-142-144>146-148>150-152>161-163-164-170300- /O.UPG.KSTO.FW.A.0001.260516T1200Z-260519T0300Z/ /O.NEW.KSTO.FW.W.0001.260516T1200Z-260519T0300Z/ Shasta Metro-N. Sac Valley in Tehama County- Central Glenn Co & Interstate 5-Eastern Glenn County- Butte County Below 1000 ft-Central Colusa County Incl. I-5- Eastern Colusa County-Sutter/Yuba counties below 1000 ft- W. Yolo County including Capay/I-505- C. Yolo/NE Solano including Woodland- Sac Metro/W. El Dorado/Amador County- C. Solano County including Fairfield- SW Solano County including Vallejo-Sacramento County Delta- San Joaquin County Delta-C. San Joaquin County including Stockton- Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft- W. Stanislaus County Above 1000 ft & I-5- C. Stanislaus County including Modesto- 1051 AM PDT Fri May 15 2026 ...RED FLAG WARNING IN EFFECT FROM 5 AM SATURDAY TO 8 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 124,142,144,145,146,148,149,150,152,153,154,155,156,157,158,159,16 0,161,163 AND 164... The National Weather Service in Sacramento has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 5 AM Saturday to 8 PM PDT Monday. The Fire Weather Watch is no longer in effect. * Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the far western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%; Overnight maximum relative humidities 30 to 55%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected Saturday night through Sunday. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ Forrest http://weather.gov/sacramento Action: Continued Issued At: 2026-05-16 04:11:34 647 WWUS86 KSTO 160911 RFWSTO URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 211 AM PDT Sat May 16 2026 CAZ124-142-144>146-148>150-152>161-163-164-170000- /O.CON.KSTO.FW.W.0001.260516T1200Z-260519T0300Z/ Shasta Metro-N. Sac Valley in Tehama County- Central Glenn Co & Interstate 5-Eastern Glenn County- Butte County Below 1000 ft-Central Colusa County Incl. I-5- Eastern Colusa County-Sutter/Yuba counties below 1000 ft- W. Yolo County including Capay/I-505- C. Yolo/NE Solano including Woodland- Sac Metro/W. El Dorado/Amador County- C. Solano County including Fairfield- SW Solano County including Vallejo-Sacramento County Delta- San Joaquin County Delta-C. San Joaquin County including Stockton- Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft- W. Stanislaus County Above 1000 ft & I-5- C. Stanislaus County including Modesto- 211 AM PDT Sat May 16 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 8 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 124,142,144,145,146,148,149,150,152,153,154,155,156, 157,158,159,160,161,163 AND 164... * Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%; Overnight maximum relative humidities of 20 to 50%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected Saturday night through Sunday. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/sacramento Action: Continued Issued At: 2026-05-16 13:44:55 125 WWUS86 KSTO 161844 RFWSTO URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 1144 AM PDT Sat May 16 2026 CAZ124-142-144>146-148>150-152>161-163-164-172300- /O.CON.KSTO.FW.W.0001.000000T0000Z-260519T0300Z/ Shasta Metro-N. Sac Valley in Tehama County- Central Glenn Co & Interstate 5-Eastern Glenn County- Butte County Below 1000 ft-Central Colusa County Incl. I-5- Eastern Colusa County-Sutter/Yuba counties below 1000 ft- W. Yolo County including Capay/I-505- C. Yolo/NE Solano including Woodland- Sac Metro/W. El Dorado/Amador County- C. Solano County including Fairfield- SW Solano County including Vallejo-Sacramento County Delta- San Joaquin County Delta-C. San Joaquin County including Stockton- Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft- W. Stanislaus County Above 1000 ft & I-5- C. Stanislaus County including Modesto- 1144 AM PDT Sat May 16 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 124,142,144,145,146,148,149,150,152,153,154,155,156, 157,158,159,160,161,163 AND 164... * Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 55%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected tonight through Sunday. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/sacramento Action: Continued Issued At: 2026-05-17 03:27:51 344 WWUS86 KSTO 170827 RFWSTO URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 127 AM PDT Sun May 17 2026 CAZ124-142-144>146-148>150-152>161-163-164-180000- /O.CON.KSTO.FW.W.0001.000000T0000Z-260519T0300Z/ Shasta Metro-N. Sac Valley in Tehama County- Central Glenn Co & Interstate 5-Eastern Glenn County- Butte County Below 1000 ft-Central Colusa County Incl. I-5- Eastern Colusa County-Sutter/Yuba counties below 1000 ft- W. Yolo County including Capay/I-505- C. Yolo/NE Solano including Woodland- Sac Metro/W. El Dorado/Amador County- C. Solano County including Fairfield- SW Solano County including Vallejo-Sacramento County Delta- San Joaquin County Delta-C. San Joaquin County including Stockton- Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft- W. Stanislaus County Above 1000 ft & I-5- C. Stanislaus County including Modesto- 127 AM PDT Sun May 17 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 124,142,144,145,146,148,149,150,152,153,154,155,156, 157,158,159,160,161,163 AND 164... * Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 55%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/sacramento Action: Continued Issued At: 2026-05-17 14:08:24 759 WWUS86 KSTO 171907 RFWSTO URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 1207 PM PDT Sun May 17 2026 CAZ124-142-144>146-148>150-152>161-163-164-182300- /O.CON.KSTO.FW.W.0001.000000T0000Z-260519T0300Z/ Shasta Metro-N. Sac Valley in Tehama County- Central Glenn Co & Interstate 5-Eastern Glenn County- Butte County Below 1000 ft-Central Colusa County Incl. I-5- Eastern Colusa County-Sutter/Yuba counties below 1000 ft- W. Yolo County including Capay/I-505- C. Yolo/NE Solano including Woodland- Sac Metro/W. El Dorado/Amador County- C. Solano County including Fairfield- SW Solano County including Vallejo-Sacramento County Delta- San Joaquin County Delta-C. San Joaquin County including Stockton- Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft- W. Stanislaus County Above 1000 ft & I-5- C. Stanislaus County including Modesto- 1207 PM PDT Sun May 17 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 124,142,144,145,146,148,149,150,152,153,154,155,156, 157,158,159,160,161,163 AND 164... * Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 45%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/sacramento Action: Expired Issued At: 2026-05-18 21:51:38 383 WWUS86 KSTO 190251 RFWSTO URGENT - FIRE WEATHER MESSAGE National Weather Service Sacramento CA 751 PM PDT Mon May 18 2026 CAZ124-142-144>146-148>150-152>161-163-164-190400- /O.EXP.KSTO.FW.W.0001.000000T0000Z-260519T0300Z/ Shasta Metro-N. Sac Valley in Tehama County- Central Glenn Co & Interstate 5-Eastern Glenn County- Butte County Below 1000 ft-Central Colusa County Incl. I-5- Eastern Colusa County-Sutter/Yuba counties below 1000 ft- W. Yolo County including Capay/I-505- C. Yolo/NE Solano including Woodland- Sac Metro/W. El Dorado/Amador County- C. Solano County including Fairfield- SW Solano County including Vallejo-Sacramento County Delta- San Joaquin County Delta-C. San Joaquin County including Stockton- Tracy Triangle Below 1000 ft-NE San Joaquin Valley Below 1000 ft- W. Stanislaus County Above 1000 ft & I-5- C. Stanislaus County including Modesto- 751 PM PDT Mon May 18 2026 ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONES 124,142,144,145,146,148,149,150,152,153,154,155,156, 157,158,159,160,161,163 AND 164... Northerly winds have diminished, therefore the Red Flag Warning for the Sacramento Valley, Delta and northern San Joaquin Valley will expire at 8 PM PDT. $$ http://weather.gov/sacramento | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||