804 
WGUS56 KMTR 251111
FFWMTR
CAC081-085-251415-
/O.NEW.KMTR.FF.W.0008.251225T1111Z-251225T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Francisco CA
311 AM PST Thu Dec 25 2025

The National Weather Service in San Francisco has issued a

* Flash Flood Warning for...
  East Central San Mateo County in northern California...
  Northwestern Santa Clara County in northern California...

* Until 615 AM PST.

* At 311 AM PST, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 0.2 and 1 inch of rain
  has fallen. Flash flooding is ongoing or expected to begin shortly.

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

  SOURCE...Radar indicated.

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

* Some locations that will experience flash flooding include...
  San Jose, Fremont, Sunnyvale, Santa Clara, Mountain View, Milpitas,
  Palo Alto, Cupertino, Campbell, Menlo Park, Saratoga, Los Gatos,
  Los Altos, East Palo Alto, Los Altos Hills, Woodside, Fruitdale,
  Buena Vista, Sunol-Midtown and Rancho Rinconada Cdp.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

&&

LAT...LON 3747 12212 3746 12210 3747 12207 3746 12205
      3746 12195 3747 12195 3723 12164 3709 12184
      3714 12199 3717 12203 3719 12203 3721 12206
      3722 12208 3728 12215 3738 12223

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

KR

383 
WGUS76 KMTR 251405
FFSMTR

Flash Flood Statement
National Weather Service San Francisco CA
605 AM PST Thu Dec 25 2025

CAC081-085-251415-
/O.CAN.KMTR.FF.W.0008.000000T0000Z-251225T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Mateo CA-Santa Clara CA-
605 AM PST Thu Dec 25 2025

...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL SAN MATEO AND
NORTHWESTERN SANTA CLARA COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 1000 PM PST Friday for portions
of central and northern California.

&&

LAT...LON 3747 12212 3746 12210 3747 12207 3746 12205
      3746 12195 3747 12195 3723 12164 3709 12184
      3714 12199 3717 12203 3719 12203 3721 12206
      3722 12208 3728 12215 3738 12223

$$

KR