912 
WGUS56 KMTR 251001
FFWMTR
CAC081-251315-
/O.NEW.KMTR.FF.W.0005.251225T1001Z-251225T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in San Francisco has issued a

* Flash Flood Warning for...
  Northern San Mateo County in northern California...

* Until 515 AM PST.

* At 201 AM PST, Doppler radar indicated heavy rain across the warned
  area. Up to 0.7 inches of rain have fallen. Flash flooding is
  ongoing or expected to begin shortly.

  HAZARD...Life threatening flash flooding. Heavy rain 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 Mateo, Redwood City, Palo Alto, Menlo Park, Foster City,
  Burlingame, San Carlos, East Palo Alto, Belmont, Millbrae,
  Hillsborough, Atherton, Woodside, Highlands-Baywood Park, North
  Fair Oaks, Stanford, Portola Valley, Emerald Lake Hills, Highlands
  and West Menlo Park.

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.

&&

LAT...LON 3738 12223 3757 12244 3761 12238 3759 12231
      3753 12228 3756 12229 3757 12229 3756 12224
      3754 12225 3753 12227 3755 12222 3752 12225
      3749 12223 3752 12220 3748 12215 3751 12214
      3747 12212

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

$$

KR

386 
WGUS76 KMTR 251251
FFSMTR

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

CAC081-251301-
/O.CAN.KMTR.FF.W.0005.000000T0000Z-251225T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Mateo CA-
451 AM PST Thu Dec 25 2025

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN SAN MATEO COUNTY...

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 3738 12223 3757 12244 3761 12238 3759 12231
      3753 12228 3756 12229 3757 12229 3756 12224
      3754 12225 3753 12227 3755 12222 3752 12225
      3749 12223 3752 12220 3748 12215 3751 12214
      3747 12212

$$

KR