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Dense Fog Advisory 0021
Issued by the Sacramento Forecast Office

Action Issued Starts Expiration
Continued 2026-02-05 09:12:43 2026-02-05 14:00:00
Area Extended 2026-02-05 09:12:43 2026-02-05 14:00:00
Cancelled 2026-02-05 12:41:48 2026-02-05 14:00:00


Action: Continued
Issued At: 2026-02-05 09:12:43

239 
WWUS76 KSTO 051512
NPWSTO

URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
712 AM PST Thu Feb 5 2026

CAZ017-018-052000-
/O.EXA.KSTO.FG.Y.0021.000000T0000Z-260205T2000Z/
Southern Sacramento Valley-Carquinez Strait and Delta-
Including the cities of Sacramento and Fairfield/Suisun
712 AM PST Thu Feb 5 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Carquinez Strait and Delta and Southern Sacramento Valley.

* WHEN...Until noon PST today.

* IMPACTS...Low visibility could make driving conditions hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of 
distance ahead of you.

&&

$$

CAZ019-052000-
/O.CON.KSTO.FG.Y.0021.000000T0000Z-260205T2000Z/
Northern San Joaquin Valley-
Including the cities of Modesto and Stockton
712 AM PST Thu Feb 5 2026

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Northern San Joaquin Valley.

* WHEN...Until noon PST today.

* IMPACTS...Low visibility could make driving conditions hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of 
distance ahead of you.

&&

$$

For more information, visit us at www.weather.gov/sto/

KH


Action: Area Extended
Issued At: 2026-02-05 09:12:43

239 
WWUS76 KSTO 051512
NPWSTO

URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
712 AM PST Thu Feb 5 2026

CAZ017-018-052000-
/O.EXA.KSTO.FG.Y.0021.000000T0000Z-260205T2000Z/
Southern Sacramento Valley-Carquinez Strait and Delta-
Including the cities of Sacramento and Fairfield/Suisun
712 AM PST Thu Feb 5 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Carquinez Strait and Delta and Southern Sacramento Valley.

* WHEN...Until noon PST today.

* IMPACTS...Low visibility could make driving conditions hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of 
distance ahead of you.

&&

$$

CAZ019-052000-
/O.CON.KSTO.FG.Y.0021.000000T0000Z-260205T2000Z/
Northern San Joaquin Valley-
Including the cities of Modesto and Stockton
712 AM PST Thu Feb 5 2026

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Northern San Joaquin Valley.

* WHEN...Until noon PST today.

* IMPACTS...Low visibility could make driving conditions hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of 
distance ahead of you.

&&

$$

For more information, visit us at www.weather.gov/sto/

KH


Action: Cancelled
Issued At: 2026-02-05 12:41:48

364 
WWUS76 KSTO 051841
NPWSTO

URGENT - WEATHER MESSAGE
National Weather Service Sacramento CA
1041 AM PST Thu Feb 5 2026

CAZ017>019-051945-
/O.CAN.KSTO.FG.Y.0021.000000T0000Z-260205T2000Z/
Southern Sacramento Valley-Carquinez Strait and Delta-Northern
San Joaquin Valley-
Including the cities of Modesto, Sacramento, Stockton, and
Fairfield/Suisun
1041 AM PST Thu Feb 5 2026

...DENSE FOG ADVISORY IS CANCELLED...

The dense fog is lifting and burning off, therefore the Dense Fog 
Advisory is cancelled. Patchy fog will be possible for the next hour 
or so.

$$

For more information, visit us at www.weather.gov/sto/

KH



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