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Friday, Dec 26, 2025 00:14:30

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Dense Fog Advisory 0024
Issued by the San Diego Forecast Office

Action Issued Starts Expiration
New 2025-12-18 23:08:35 2025-12-18 23:08:00 2025-12-19 10:00:00
Time and Area Extended 2025-12-19 03:01:20 2025-12-19 06:00:00 2025-12-19 12:00:00
Time Extended 2025-12-19 03:01:20 2025-12-19 11:00:00


Action: New
Issued At: 2025-12-18 23:08:35

961 
WWUS76 KSGX 190508
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
908 PM PST Thu Dec 18 2025

CAZ043-191600-
/O.NEW.KSGX.FG.Y.0024.251219T0508Z-251219T1600Z/
San Diego County Coastal Areas-
Including the cities of Carlsbad, National City, Vista,
Encinitas, Chula Vista, San Diego, and Oceanside
908 PM PST Thu Dec 18 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM PST FRIDAY...

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

* WHERE...San Diego County Coastal Areas.

* WHEN...Until 8 AM PST Friday.

* 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.

&&

$$

PS


Action: Time and Area Extended
Issued At: 2025-12-19 03:01:20

668 
WWUS76 KSGX 190900
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
100 AM PST Fri Dec 19 2025

CAZ552-554-191700-
/O.EXB.KSGX.FG.Y.0024.251219T1200Z-251219T1800Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, Garden
Grove, Irvine, and Santa Ana
100 AM PST Fri Dec 19 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING...

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

* WHERE...Orange County Coastal Areas and Orange County Inland Areas 
  from the coast inland to around Interstate 5.

* WHEN...Until 10 AM PST this morning.

* 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.

&&

$$

CAZ043-191700-
/O.EXT.KSGX.FG.Y.0024.000000T0000Z-251219T1700Z/
San Diego County Coastal Areas-
Including the cities of Encinitas, San Diego, Carlsbad, Chula
Vista, and National City
100 AM PST Fri Dec 19 2025

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING...

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

* WHERE...San Diego County Coastal Areas.

* WHEN...Until 9 AM PST this morning.

* 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.

&&

$$

17


Action: Time Extended
Issued At: 2025-12-19 03:01:20

668 
WWUS76 KSGX 190900
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
100 AM PST Fri Dec 19 2025

CAZ552-554-191700-
/O.EXB.KSGX.FG.Y.0024.251219T1200Z-251219T1800Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, Garden
Grove, Irvine, and Santa Ana
100 AM PST Fri Dec 19 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING...

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

* WHERE...Orange County Coastal Areas and Orange County Inland Areas 
  from the coast inland to around Interstate 5.

* WHEN...Until 10 AM PST this morning.

* 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.

&&

$$

CAZ043-191700-
/O.EXT.KSGX.FG.Y.0024.000000T0000Z-251219T1700Z/
San Diego County Coastal Areas-
Including the cities of Encinitas, San Diego, Carlsbad, Chula
Vista, and National City
100 AM PST Fri Dec 19 2025

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 9 AM PST THIS MORNING...

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

* WHERE...San Diego County Coastal Areas.

* WHEN...Until 9 AM PST this morning.

* 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.

&&

$$

17



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