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Severe Thunderstorm Warning 0021
Issued by the San Francisco Bay Area / Monterey Forecast Office

Action Issued Starts Expiration
New 2025-12-25 04:49:06 2025-12-25 04:48:00 2025-12-25 05:15:00
Continued 2025-12-25 05:06:36 2025-12-25 05:15:00
Expired 2025-12-25 05:14:07 2025-12-25 05:15:00


Action: New
Issued At: 2025-12-25 04:49:06

158 
WUUS56 KMTR 251048
SVRMTR
CAC081-087-251115-
/O.NEW.KMTR.SV.W.0021.251225T1048Z-251225T1115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service San Francisco CA
248 AM PST Thu Dec 25 2025

The National Weather Service in San Francisco has issued a

* Severe Thunderstorm Warning for...
  Southeastern San Mateo County in northern California...
  Northwestern Santa Cruz County in northern California...

* Until 315 AM PST.

* At 248 AM PST, a severe thunderstorm was located 10 miles southwest
  of Boulder Creek, or 14 miles west of Santa Cruz, moving northeast
  at 50 mph.

  HAZARD...70 mph wind gusts and small hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Boulder Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 3712 12231 3729 12223 3724 12211 3723 12210
      3723 12209 3721 12207 3721 12206 3720 12205
      3698 12215 3703 12222 3706 12225 3708 12226
      3708 12227 3710 12228
TIME...MOT...LOC 1048Z 202DEG 42KT 3705 12227

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Behringer


Action: Continued
Issued At: 2025-12-25 05:06:36

587 
WWUS56 KMTR 251106
SVSMTR

Severe Weather Statement
National Weather Service San Francisco CA
306 AM PST Thu Dec 25 2025

CAC081-087-251115-
/O.CON.KMTR.SV.W.0021.000000T0000Z-251225T1115Z/
San Mateo CA-Santa Cruz CA-
306 AM PST Thu Dec 25 2025

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM PST FOR
SOUTHEASTERN SAN MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES...

At 306 AM PST, a severe thunderstorm was located 7 miles north of
Boulder Creek, or 8 miles west of Saratoga, moving northeast at 50
mph.

HAZARD...70 mph wind gusts and small hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile
         homes, roofs, and outbuildings.

Locations impacted include...
  Boulder Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
widespread damaging winds.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 3708 12223 3728 12220 3724 12211 3723 12210
      3723 12209 3722 12209 3722 12208 3721 12207
      3721 12206 3720 12205 3698 12215
TIME...MOT...LOC 1048Z 202DEG 42KT 3705 12227

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Behringer


Action: Expired
Issued At: 2025-12-25 05:14:07

988 
WWUS56 KMTR 251113
SVSMTR

Severe Weather Statement
National Weather Service San Francisco CA
313 AM PST Thu Dec 25 2025

CAC081-087-251123-
/O.EXP.KMTR.SV.W.0021.000000T0000Z-251225T1115Z/
San Mateo CA-Santa Cruz CA-
313 AM PST Thu Dec 25 2025

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 315 AM PST FOR
SOUTHEASTERN SAN MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds are still possible with this thunderstorm.

&&

LAT...LON 3708 12223 3728 12220 3724 12211 3723 12210
      3723 12209 3722 12209 3722 12208 3721 12207
      3721 12206 3720 12205 3698 12215
TIME...MOT...LOC 1106Z 202DEG 42KT 3724 12217

$$

Behringer



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