535
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
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