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

$$