Red Flag Warning

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

URGENT - FIRE WEATHER MESSAGE
National Weather Service Hanford CA
1148 AM PDT Sun May 17 2026


CAZ579-580-180300-
/O.CON.KHNX.FW.W.0002.000000T0000Z-260519T0300Z/
West Side Hills-San Joaquin Valley-
1148 AM PDT Sun May 17 2026

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITIES FOR THE SAN JOAQUIN
VALLEY AND WEST SIDE HILLS ALONG THE COASTAL RANGE...

* AFFECTED AREA...Fire weather zone 579 West Side Hills on the
  Coastal Range. Fire weather zone 580 San Joaquin Valley.

* WIND...GUSTING TO 35 MPH SATURDAY AND SUNDAY.

* HUMIDITY...20% OR LESS SATURDAY AND SUNDAY THEN 15% OR LESS
  MONDAY

* HIGHEST THREAT...FAST-MOVING GRASS FIRES

* IMPACTS...Any fires that develop will likely spread rapidly.
  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.

&&

$$

McCoy