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13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.

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2025 [KSGX] SAN_DIEGO Frost (FR) Advisory (Y) Number 4

Listing of Counties/Parishes/Zones Included in Product

RADAR Composite at Issuance Time

Storm Based Warning History

543 
WWUS76 KSGX 070749
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1149 PM PST Thu Mar 6 2025

CAZ060-065-070900-
/O.CAN.KSGX.WI.Y.0008.000000T0000Z-250307T0900Z/
Apple and Lucerne Valleys-San Gorgonio Pass near Banning-
Including the cities of Banning, Adelanto, Southern California
Logistics Airport, Victorville, Desert Hot Springs, Hesperia, and
Apple Valley
1149 PM PST Thu Mar 6 2025

...WIND ADVISORY IS CANCELLED...

$$

CAZ048-071600-
/O.NEW.KSGX.FR.Y.0003.250307T0749Z-250307T1700Z/
/O.NEW.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
1149 PM PST Thu Mar 6 2025

...FROST ADVISORY IN EFFECT UNTIL 9 AM PST FRIDAY...
...FROST ADVISORY IN EFFECT FROM MIDNIGHT FRIDAY NIGHT TO 9 AM PST 
SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...Colder, wind-sheltered portions of the Inland Empire, 
  especially southern and eastern portions.

* WHEN...For the first Frost Advisory, until 9 AM PST Friday. For 
  the second Frost Advisory, from midnight Friday Night to 9 AM PST 
  Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

17
380 
WWUS76 KSGX 071052
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
252 AM PST Fri Mar 7 2025

CAZ050-072230-
/O.EXA.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
252 AM PST Fri Mar 7 2025

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST 
SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...Colder, wind-sheltered portions of the San Diego County 
  valleys, mainly the inland valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ048-072230-
/O.CON.KSGX.FR.Y.0003.000000T0000Z-250307T1700Z/
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
252 AM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...
...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...Colder, wind-sheltered portions of the Inland Empire, 
  especially southern and eastern portions.

* WHEN...For the first Frost Advisory, until 9 AM PST this morning. 
  For the second Frost Advisory, from midnight tonight to 9 AM PST 
  Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

17
570 
WWUS76 KSGX 071701
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
901 AM PST Fri Mar 7 2025

CAZ048-072215-
/O.EXP.KSGX.FR.Y.0003.000000T0000Z-250307T1700Z/
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
901 AM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...
...FROST ADVISORY HAS EXPIRED...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-072215-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
901 AM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...San Diego County Valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

12
068 
WWUS76 KSGX 072049
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1249 PM PST Fri Mar 7 2025

CAZ048-080615-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
1249 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-080615-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
1249 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...San Diego County Valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

12
470 
WWUS76 KSGX 080432
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
832 PM PST Fri Mar 7 2025

CAZ048-081430-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
832 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-081430-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
832 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...San Diego County Valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CO
745 
WWUS76 KSGX 081131
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
331 AM PST Sat Mar 8 2025

CAZ048-081700-
/O.CON.KSGX.FR.Y.0004.000000T0000Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
331 AM PST Sat Mar 8 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...

* WHAT...Temperatures as low as 32 will result in frost formation.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

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

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-081700-
/O.CON.KSGX.FR.Y.0004.000000T0000Z-250308T1700Z/
San Diego County Valleys-
331 AM PST Sat Mar 8 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...

* WHAT...Temperatures as low as 32 will result in frost formation.

* WHERE...San Diego County Valleys.

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

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

PS
889 
WWUS76 KSGX 081703
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
903 AM PST Sat Mar 8 2025

CAZ048-050-081815-
/O.EXP.KSGX.FR.Y.0004.000000T0000Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-San
Diego County Valleys-
903 AM PST Sat Mar 8 2025

...FROST ADVISORY HAS EXPIRED...

Temperatures have risen and the threat of frost has ended.

$$

12
Permalink to 202503070749-KSGX-WWUS76-NPWSGX
543 
WWUS76 KSGX 070749
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1149 PM PST Thu Mar 6 2025

CAZ060-065-070900-
/O.CAN.KSGX.WI.Y.0008.000000T0000Z-250307T0900Z/
Apple and Lucerne Valleys-San Gorgonio Pass near Banning-
Including the cities of Banning, Adelanto, Southern California
Logistics Airport, Victorville, Desert Hot Springs, Hesperia, and
Apple Valley
1149 PM PST Thu Mar 6 2025

...WIND ADVISORY IS CANCELLED...

$$

CAZ048-071600-
/O.NEW.KSGX.FR.Y.0003.250307T0749Z-250307T1700Z/
/O.NEW.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
1149 PM PST Thu Mar 6 2025

...FROST ADVISORY IN EFFECT UNTIL 9 AM PST FRIDAY...
...FROST ADVISORY IN EFFECT FROM MIDNIGHT FRIDAY NIGHT TO 9 AM PST 
SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...Colder, wind-sheltered portions of the Inland Empire, 
  especially southern and eastern portions.

* WHEN...For the first Frost Advisory, until 9 AM PST Friday. For 
  the second Frost Advisory, from midnight Friday Night to 9 AM PST 
  Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

17
Permalink to 202503071052-KSGX-WWUS76-NPWSGX
380 
WWUS76 KSGX 071052
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
252 AM PST Fri Mar 7 2025

CAZ050-072230-
/O.EXA.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
252 AM PST Fri Mar 7 2025

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST 
SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...Colder, wind-sheltered portions of the San Diego County 
  valleys, mainly the inland valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ048-072230-
/O.CON.KSGX.FR.Y.0003.000000T0000Z-250307T1700Z/
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
252 AM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...
...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...Colder, wind-sheltered portions of the Inland Empire, 
  especially southern and eastern portions.

* WHEN...For the first Frost Advisory, until 9 AM PST this morning. 
  For the second Frost Advisory, from midnight tonight to 9 AM PST 
  Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

17
Permalink to 202503071701-KSGX-WWUS76-NPWSGX
570 
WWUS76 KSGX 071701
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
901 AM PST Fri Mar 7 2025

CAZ048-072215-
/O.EXP.KSGX.FR.Y.0003.000000T0000Z-250307T1700Z/
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
901 AM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...
...FROST ADVISORY HAS EXPIRED...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-072215-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
901 AM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...San Diego County Valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

12
Permalink to 202503072049-KSGX-WWUS76-NPWSGX
068 
WWUS76 KSGX 072049
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1249 PM PST Fri Mar 7 2025

CAZ048-080615-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
1249 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-080615-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
1249 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...San Diego County Valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

12
Permalink to 202503080432-KSGX-WWUS76-NPWSGX
470 
WWUS76 KSGX 080432
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
832 PM PST Fri Mar 7 2025

CAZ048-081430-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
832 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 32 will result in frost formation. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-081430-
/O.CON.KSGX.FR.Y.0004.250308T0800Z-250308T1700Z/
San Diego County Valleys-
832 PM PST Fri Mar 7 2025

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM 
PST SATURDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...San Diego County Valleys.

* WHEN...From midnight tonight to 9 AM PST Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CO
Permalink to 202503081131-KSGX-WWUS76-NPWSGX
745 
WWUS76 KSGX 081131
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
331 AM PST Sat Mar 8 2025

CAZ048-081700-
/O.CON.KSGX.FR.Y.0004.000000T0000Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
331 AM PST Sat Mar 8 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...

* WHAT...Temperatures as low as 32 will result in frost formation.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

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

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

CAZ050-081700-
/O.CON.KSGX.FR.Y.0004.000000T0000Z-250308T1700Z/
San Diego County Valleys-
331 AM PST Sat Mar 8 2025

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...

* WHAT...Temperatures as low as 32 will result in frost formation.

* WHERE...San Diego County Valleys.

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

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

PS
Permalink to 202503081703-KSGX-WWUS76-NPWSGX
889 
WWUS76 KSGX 081703
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
903 AM PST Sat Mar 8 2025

CAZ048-050-081815-
/O.EXP.KSGX.FR.Y.0004.000000T0000Z-250308T1700Z/
San Bernardino and Riverside County Valleys-The Inland Empire-San
Diego County Valleys-
903 AM PST Sat Mar 8 2025

...FROST ADVISORY HAS EXPIRED...

Temperatures have risen and the threat of frost has ended.

$$

12

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