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Flash Flood Warning 0034
Issued by the San Diego Forecast Office

Action Issued Starts Expiration
New 2025-12-24 10:05:46 2025-12-24 10:05:00 2025-12-24 15:00:00
Time Extended 2025-12-24 14:56:22 2025-12-24 17:00:00
Time Extended 2025-12-24 16:53:25 2025-12-24 18:30:00
Continued 2025-12-24 18:21:27 2025-12-24 18:30:00
Time Extended 2025-12-24 18:22:27 2025-12-24 21:00:00


Action: New
Issued At: 2025-12-24 10:05:46

250 
WGUS56 KSGX 241605
FFWSGX
CAC071-242100-
/O.NEW.KSGX.FF.W.0034.251224T1605Z-251224T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Diego CA
805 AM PST Wed Dec 24 2025

The National Weather Service in San Diego has issued a

* Flash Flood Warning for...
  San Bernardino County in southern California...

* Until 100 PM PST.

* At 805 AM PST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. The expected rainfall rate is 0.75 to 1 inch in 1 
  hour. Additional rainfall amounts of 3 to 6 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  San Bernardino, Hesperia, Apple Valley, Lake Arrowhead, Hwy 173 
  Between Lake Arrowhead And Hesperia, Crestline, Rimforest, 
  Skyforest, Hwy 18 Between San Bernardino And Crestline and 
  Silverwood Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3415 11719 3416 11732 3440 11732 3440 11714

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.75-1 INCH IN 1 HOUR

$$

Munyan


Action: Time Extended
Issued At: 2025-12-24 14:56:22

795 
WGUS56 KSGX 242056
FFWSGX
CAC071-242300-
/O.EXT.KSGX.FF.W.0034.000000T0000Z-251224T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Diego CA
1256 PM PST Wed Dec 24 2025

The National Weather Service in San Diego has extended the

* Flash Flood Warning for...
  San Bernardino County in southern California...

* Until 300 PM PST.

* At 1256 PM PST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. The expected rainfall rate is 0.5 to 0.75 inches in 1 
  hour. Additional rainfall amounts of 2 to 4 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  San Bernardino, Hesperia, Apple Valley, Lake Arrowhead, Hwy 173 
  Between Lake Arrowhead And Hesperia, Crestline, Rimforest, 
  Skyforest, Hwy 18 Between San Bernardino And Crestline and 
  Silverwood Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3415 11719 3416 11732 3440 11732 3440 11714

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.5-0.75 INCHES IN 1 HOUR

$$

Munyan


Action: Time Extended
Issued At: 2025-12-24 16:53:25

090 
WGUS56 KSGX 242253
FFWSGX
CAC071-250030-
/O.EXT.KSGX.FF.W.0034.000000T0000Z-251225T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Diego CA
253 PM PST Wed Dec 24 2025

The National Weather Service in San Diego has extended the

* Flash Flood Warning for...
  San Bernardino County in southern California...

* Until 430 PM PST.

* At 253 PM PST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. The expected rainfall rate is 0.25 to 0.75 inches in 
  1 hour. Additional rainfall amounts of 1 to 2 inches are possible 
  in the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  San Bernardino, Hesperia, Apple Valley, Lake Arrowhead, Hwy 173 
  Between Lake Arrowhead And Hesperia, Crestline, Rimforest, 
  Skyforest, Hwy 18 Between San Bernardino And Crestline and 
  Silverwood Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3415 11719 3416 11732 3440 11732 3440 11714

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.25-0.75 INCHES IN 1 HOUR

$$

Munyan


Action: Continued
Issued At: 2025-12-24 18:21:27

545 
WGUS76 KSGX 250021
FFSSGX

Flash Flood Statement
National Weather Service San Diego CA
421 PM PST Wed Dec 24 2025

CAC071-250030-
/O.CON.KSGX.FF.W.0034.000000T0000Z-251225T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
421 PM PST Wed Dec 24 2025

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM PST THIS 
AFTERNOON FOR SAN BERNARDINO COUNTY...

At 421 PM PST, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 5 and 8 inches of rain have 
fallen. The expected rainfall rate is 0.25 to 0.75 inches in 1 hour. 
Additional rainfall amounts of 0.75 to 1.5 inches are possible in 
the warned area. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  San Bernardino, Hesperia, Apple Valley, Lake Arrowhead, Hwy 173 
  Between Lake Arrowhead And Hesperia, Crestline, Rimforest, 
  Skyforest, Hwy 18 Between San Bernardino And Crestline and 
  Silverwood Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3415 11719 3416 11732 3440 11732 3440 11714

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.25-0.75 INCHES IN 1 HOUR

$$

PS


Action: Time Extended
Issued At: 2025-12-24 18:22:27

560 
WGUS56 KSGX 250022
FFWSGX
CAC071-250300-
/O.EXT.KSGX.FF.W.0034.000000T0000Z-251225T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Diego CA
422 PM PST Wed Dec 24 2025

The National Weather Service in San Diego has extended the

* Flash Flood Warning for...
  San Bernardino County in southern California...

* Until 700 PM PST.

* At 422 PM PST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 5 and 8 inches of rain 
  have fallen. The expected rainfall rate is 0.25 to 0.75 inches in 
  1 hour. Additional rainfall amounts of 0.75 to 1.5 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  San Bernardino, Hesperia, Apple Valley, Lake Arrowhead, Hwy 173 
  Between Lake Arrowhead And Hesperia, Crestline, Rimforest, 
  Skyforest, Hwy 18 Between San Bernardino And Crestline and 
  Silverwood Lake Rec Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, dont drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3415 11719 3416 11732 3440 11732 3440 11714

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.25-0.75 INCHES IN 1 HOUR

$$

PS



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