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Home Return to list Severe Thunderstorm Warning 0022 Issued by the San Francisco Bay Area / Monterey Forecast Office
Action: New Issued At: 2025-12-25 05:12:36
813
WUUS56 KMTR 251112
SVRMTR
CAC001-081-085-087-251145-
/O.NEW.KMTR.SV.W.0022.251225T1112Z-251225T1145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service San Francisco CA
312 AM PST Thu Dec 25 2025
The National Weather Service in San Francisco has issued a
* Severe Thunderstorm Warning for...
South Central Alameda County in northern California...
East Central San Mateo County in northern California...
Northwestern Santa Clara County in northern California...
Northwestern Santa Cruz County in northern California...
* Until 345 AM PST.
* At 312 AM PST, severe thunderstorms were located along a line from
over Los Altos to over Ben Lomond, or along a line from over Los
Altos to 9 miles north of Santa Cruz, moving northeast at 60 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...
San Jose, Fremont, Hayward, Sunnyvale, Santa Clara, Mountain View,
Pleasanton, Union City, Milpitas, Palo Alto, Cupertino, Newark,
Campbell, Saratoga, Los Gatos, Los Altos, Scotts Valley, Los Altos
Hills, Buena Vista and Fruitdale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. These storms are 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.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is also occurring with these storms and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3749 12205 3750 12208 3765 12193 3744 12158
3700 12210 3733 12223 3736 12220 3746 12196
3746 12197 3747 12199 3748 12196 3747 12205
TIME...MOT...LOC 1112Z 211DEG 50KT 3736 12210 3728 12202 3711 12206
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
$$
Behringer
Action: Continued Issued At: 2025-12-25 05:34:52
416
WWUS56 KMTR 251134
SVSMTR
Severe Weather Statement
National Weather Service San Francisco CA
334 AM PST Thu Dec 25 2025
CAC081-087-251144-
/O.CAN.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/
San Mateo CA-Santa Cruz CA-
334 AM PST Thu Dec 25 2025
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EAST CENTRAL SAN
MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with these thunderstorms.
&&
LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158
3715 12192
TIME...MOT...LOC 1112Z 211DEG 50KT 3737 12210 3728 12202 3711 12205
$$
CAC001-085-251145-
/O.CON.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/
Alameda CA-Santa Clara CA-
334 AM PST Thu Dec 25 2025
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM PST FOR
SOUTH CENTRAL ALAMEDA AND NORTH CENTRAL SANTA CLARA COUNTIES...
At 334 AM PST, severe thunderstorms were located along a line from
over Sunol to over Alum Rock, or along a line from over Pleasanton to
near San Jose, moving northeast at 60 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...
San Jose, Fremont, Hayward, Santa Clara, Pleasanton, Milpitas,
Campbell, Los Gatos, East Foothills, Alum Rock, Sunol-Midtown,
Seven Trees, Buena Vista, Fruitdale, Sunol and Cambrian Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. These storms are 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.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is also occurring with these storms and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158
3715 12192
TIME...MOT...LOC 1112Z 211DEG 50KT 3737 12210 3728 12202 3711 12205
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
$$
Behringer
Action: Cancelled Issued At: 2025-12-25 05:34:52
416
WWUS56 KMTR 251134
SVSMTR
Severe Weather Statement
National Weather Service San Francisco CA
334 AM PST Thu Dec 25 2025
CAC081-087-251144-
/O.CAN.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/
San Mateo CA-Santa Cruz CA-
334 AM PST Thu Dec 25 2025
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EAST CENTRAL SAN
MATEO AND NORTHWESTERN SANTA CRUZ COUNTIES...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with these thunderstorms.
&&
LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158
3715 12192
TIME...MOT...LOC 1112Z 211DEG 50KT 3737 12210 3728 12202 3711 12205
$$
CAC001-085-251145-
/O.CON.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/
Alameda CA-Santa Clara CA-
334 AM PST Thu Dec 25 2025
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM PST FOR
SOUTH CENTRAL ALAMEDA AND NORTH CENTRAL SANTA CLARA COUNTIES...
At 334 AM PST, severe thunderstorms were located along a line from
over Sunol to over Alum Rock, or along a line from over Pleasanton to
near San Jose, moving northeast at 60 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...
San Jose, Fremont, Hayward, Santa Clara, Pleasanton, Milpitas,
Campbell, Los Gatos, East Foothills, Alum Rock, Sunol-Midtown,
Seven Trees, Buena Vista, Fruitdale, Sunol and Cambrian Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. These storms are 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.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is also occurring with these storms and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158
3715 12192
TIME...MOT...LOC 1112Z 211DEG 50KT 3737 12210 3728 12202 3711 12205
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
$$
Behringer
Action: Expired Issued At: 2025-12-25 05:45:37
707
WWUS56 KMTR 251145
SVSMTR
Severe Weather Statement
National Weather Service San Francisco CA
345 AM PST Thu Dec 25 2025
CAC001-085-251155-
/O.EXP.KMTR.SV.W.0022.000000T0000Z-251225T1145Z/
Alameda CA-Santa Clara CA-
345 AM PST Thu Dec 25 2025
...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR SOUTH CENTRAL ALAMEDA
AND NORTH CENTRAL SANTA CLARA COUNTIES...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire. However, gusty
winds are still possible with these thunderstorms.
&&
LAT...LON 3748 12196 3765 12193 3759 12182 3744 12158
3715 12192
TIME...MOT...LOC 1134Z 212DEG 50KT 3763 12189 3755 12181 3737 12185
$$
Behringer
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