Tornado Warning 1, NWS San Francisco Bay Area, CA

606 
WWUS56 KMTR 252033
SVSMTR

Severe Weather Statement
National Weather Service San Francisco CA
1233 PM PST Thu Dec 25 2025

CAC087-252100-
/O.CON.KMTR.TO.W.0001.000000T0000Z-251225T2100Z/
Santa Cruz CA-
1233 PM PST Thu Dec 25 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1 PM PST FOR CENTRAL SANTA
CRUZ COUNTY...

At 1233 PM PST, a severe thunderstorm capable of producing a tornado
was located over Live Oak, or over Santa Cruz, moving north at 35
mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

Locations impacted include...
  Santa Cruz, Scotts Valley, Capitola, Live Oak, Soquel, Opal Cliffs,
  Twin Lakes, Aptos, Felton and Day Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3710 12205 3711 12190 3708 12182 3701 12190
      3699 12193 3695 12197 3696 12198 3696 12200
      3697 12200 3696 12201 3696 12202 3695 12203
      3695 12205
TIME...MOT...LOC 2019Z 201DEG 28KT 3688 12204

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN

$$

Flynn

700 
WWUS56 KMTR 252040
SVSMTR

Severe Weather Statement
National Weather Service San Francisco CA
1240 PM PST Thu Dec 25 2025

CAC087-252100-
/O.CON.KMTR.TO.W.0001.000000T0000Z-251225T2100Z/
Santa Cruz CA-
1240 PM PST Thu Dec 25 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1 PM PST FOR CENTRAL SANTA
CRUZ COUNTY...

At 1240 PM PST, a severe thunderstorm capable of producing a tornado
was located over Scotts Valley, or 6 miles northeast of Santa Cruz,
moving north at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

Locations impacted include...
  Santa Cruz, Scotts Valley, Capitola, Live Oak, Soquel and Day
  Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3710 12199 3710 12193 3707 12188 3699 12193
      3697 12197 3697 12200 3699 12202
TIME...MOT...LOC 2033Z 201DEG 28KT 3699 12199

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN

$$

Flynn

254 
WWUS56 KMTR 252044
SVSMTR

Severe Weather Statement
National Weather Service San Francisco CA
1244 PM PST Thu Dec 25 2025

CAC087-252100-
/O.CON.KMTR.TO.W.0001.000000T0000Z-251225T2100Z/
Santa Cruz CA-
1244 PM PST Thu Dec 25 2025

...TORNADO WARNING REMAINS IN EFFECT UNTIL 1 PM PST FOR CENTRAL SANTA
CRUZ COUNTY...

At 1244 PM PST, a severe thunderstorm capable of producing a tornado
was located near Scotts Valley, or 8 miles northeast of Santa Cruz,
moving north at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

Locations impacted include...
  Santa Cruz.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3710 12197 3707 12189 3699 12196 3701 12201
TIME...MOT...LOC 2040Z 201DEG 28KT 3704 12196

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN

$$

Flynn

500 
WWUS56 KMTR 252050
SVSMTR

Severe Weather Statement
National Weather Service San Francisco CA
1250 PM PST Thu Dec 25 2025

CAC087-252100-
/O.CAN.KMTR.TO.W.0001.000000T0000Z-251225T2100Z/
Santa Cruz CA-
1250 PM PST Thu Dec 25 2025

...TORNADO WARNING IS CANCELLED FOR CENTRAL SANTA CRUZ COUNTY...

The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However, small hail and
gusty winds are still possible with this thunderstorm.

&&

LAT...LON 3710 12197 3707 12189 3699 12196 3701 12201
TIME...MOT...LOC 2044Z 201DEG 28KT 3707 12195

$$

Flynn

Area Forecast Discussion
National Weather Service San Francisco CA
944 AM PST Thu Dec 25 2025

...New AVIATION, MARINE...

.KEY MESSAGES...
Updated at 1052 PM PST Wed Dec 24 2025

 - Strong and damaging winds continue overnight through Thursday
   evening.

 - A flood watch remains in effect through Friday evening across
   the region. The main threat is flash flooding and landslides
   from high rain rates.

 - Slight chances for severe thunderstorms begin this evening and
   continue through Thursday evening. Severe threats include
   damaging wind gusts and possible tornadoes.

 - Dangerous beach and marine conditions continue through Friday
   across the Pacific coast and adjacent beaches.

 - Cold temperatures settle in this weekend after the storms break

&&

.UPDATE...
Issued at 532 AM PST Thu Dec 25 2025

The main rain band has passed to the east of us. Severe
Thunderstorm Warnings and Flash Flood Warnings were issued
overnight across the Bay Area as the damaging winds and intense
rain came through the region. Wind gusts remain elevated across
the region, and the immense rainfall is still making its way
across the urban landscape of the Bay Area. We are continuing to
receive reports of roadway flooding across the Bay Area. If you
come across a flooded roadway, turn around, don't drown! Even if
you don't, take care if you do have to travel across the region
today, as the intense winds brought down trees, branches, and
power lines across the roadways.

Scattered showers continue through the morning with the latest
high resolution guidance showing a signal for some organized
thunderstorms to return late this afternoon and this evening as a
shortwave approaches the state.

Highest wind reports overnight are 92 mph at the North Peak
Access Road PG&E station in northwestern San Mateo County, 91 mph
at the O'Neill Sea Odyssey station near Santa Cruz harbor, and 90
mph at the Mount Umunhum PG&E station and the Gunsight Fire Road
PG&E station in the Marin County highlands. Downtown San Francisco
reported 0.74 inches of rain from 5 PM yesterday to 5 AM this
morning.

DialH

&&

.SHORT TERM...
Issued at 1052 PM PST Wed Dec 24 2025
(Tonight through Friday)

Don't let your guard down, the line of showers and thunderstorms
with strong winds that swept through our area earlier this
(Wednesday) evening was only a precursor to what is expected to
be the most impactful line of storms yet, that is currently about
to enter our outer marine zones about 100mi offshore. Impacts for
the next line are expected to be felt by Midnight PST, with
another round of strong wind, periods of heavy rain with the
potential of low top supercells producing waterspouts that could
move onshore as short-lived tornadoes or straight line winds up
to 80 MPH or higher. The High Wind Warning remains in place until
10 AM PST Thursday (Christmas) morning and may be extended. Our
Flood Watch remains in place until Friday night at 10 PM PST. The
SPC continues to have our entire Pacific Coast line in a Marginal
Risk for Severe Thunderstorms through early Friday morning at 4
AM. That means, the line off showers and thunderstorms progged to
move onshore as early as late afternoon Thursday into the evening
hours may be just as impactful as the one currently on our door
step. That means all hazards mentioned above are in play through
at least tomorrow night, along with the dangerous beach hazards
and gale to near storm force winds over both our coastal and outer
waters. If traveling Christmas day or night, expect extensive
travel delays, along with power outages and urban/nuisance
flooding.

&&

.LONG TERM...
Issued at 1052 PM PST Wed Dec 24 2025
(Friday night through next Wednesday)

*Long term discussion remains unchanged from Wednesday afternoon
 update*

Starting in the early morning Friday, winds and shower activity
will gradually decrease as the low pressure system offshore opens
up into a trough and moves into northern Oregon. The associated
surface trough axis will move across the Bay Area Friday evening.
This will finally flip the winds back to northerly, bringing
drier, cooler weather for the weekend. The 1000-500 mb thickness
actually increases this weekend, with the cooling coming mainly from
enhanced radiation during in the cloudless nights. Sunday through
Tuesday look particularly calm, clear and cool as a 500 mb ridge
sets in. The next troughing pattern looks probable on the 1st or
2nd, just in time for King Tides. There's no strong signal for
major impacts yet, but the CW3E ECCC AR Activity tool shows higher
than normal chances for atmospheric rivers through the first half
of January.

&&

.AVIATION...
(18Z TAFS)
Issued at 929 AM PST Thu Dec 25 2025

A dry slot is allowing some sun to reach the ground, but strong
southerly winds are ongoing. Showers and thunderstorm activity
will increase through the afternoon, with a distinct peak in
activity expected around 01-03Z as a line of strong thunderstorms
rolls through. Behind this line, the activity will switch to more
scattered showers and moderate to strong southerly winds for the
remainder of the TAF period.

Vicinity of SFO...Winds will stay fixed from the south all day.
There is some uncertainty regarding the onset of rain showers and
possible thunderstorms. The latest high resolution guidance shows
a line of showers developing around 19-20Z, but it's unclear if
these storms will train over SFO or stay further south. The final
push of strong showers and likely thunderstorms should move
through around 01-02Z and I've included a TEMPO line in the TAF
for these brief, but impactful conditions. After this main band
moves through, showers will become lighter and much more
scattered, but the strong southerly winds will remain through the
TAF period and into Friday before finally shifting back to
westerly and easing Friday night.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...The southern terminals have the
best chance of dodging the initial push of shower activity this
afternoon, but will still be hit by the stronger band that rolls
through this evening. Winds will remain strong out of the south
all day and into Friday.

&&

.MARINE...
(Today through Tuesday)
Issued at 929 AM PST Thu Dec 25 2025

...HAZARDOUS MARINE CONDITIONS CONTINUE INTO EARLY FRIDAY...
While the Storm Warnings have ended, Southeast gales continue
across the coastal waters and will persist into Friday morning.
These  dangerous winds are accompanied by a chance for
thunderstorms and  possible waterspouts through the evening. Very
rough, choppy seas  will accompany these gales and linger through
the day Friday,  reinforced by a moderate westerly swell. If your
vessel is not  able to handle these conditions return to port or
seek protected  waters as soon as possible.

&&

.BEACHES...
Issued at 325 PM PST Wed Dec 24 2025

A Beach Hazards Statement has been issued for the coast through
4AM Friday. The main concerns include:blowing and drifting sand
and wind waves up to 20 ft. The drifting sand and increased sea
spray will also result in poor visibilities, affecting water
rescues. Increased coastal erosion will be possible as well.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through late tonight for CAZ006-505-509-
     529-530.

     Flood Watch through Friday evening for CAZ006-502>506-508>510-
     512>518-528>530.

     High Wind Warning until 10 AM PST this morning for CAZ006-503-
     505-509-517-528>530.

     Wind Advisory until 10 AM PST this morning for CAZ502-504-506-
     508-510-512>516-518.

PZ...Gale Warning until 3 AM PST Friday for Mry Bay-Pigeon Pt to Pt
     Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt
     Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt
     Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm-SF
     Bay N of Bay Bridge.

&&

SHORT TERM...JM
LONG TERM....JM
AVIATION...Flynn
MARINE...Flynn

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Preliminary Local Storm Report
National Weather Service San Francisco CA
903 AM PST Thu Dec 25 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0839 AM     Non-Tstm Wnd Dmg 21 WNW Monte Rio        38.61N 123.36W
12/25/2025                   Sonoma             CA   Law Enforcement

            CHP is reporting a tree down on northbound
            SR1, blocking both lanes.

&&

Palmer

Preliminary Local Storm Report
National Weather Service San Francisco CA
905 AM PST Thu Dec 25 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0831 AM     Landslide        5 ESE Livermore         37.66N 121.68W
12/25/2025                   Alameda            CA   Law Enforcement

            CHP is reporting a rock slide blocking the
            eastbound lanes of Tesla Road at Cross Road.

&&

Palmer

Special Weather Statement
National Weather Service San Francisco CA
913 AM PST Thu Dec 25 2025

CAZ502>506-251800-
Coastal North Bay Including Point Reyes National Seashore CA-
Marin Coastal Range CA-Sonoma Coastal Range CA-North Bay Interior
Valleys CA-North Bay Interior Mountains CA-
913 AM PST Thu Dec 25 2025

...AN AREA OF STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN MARIN...
WEST CENTRAL NAPA AND SONOMA COUNTIES UNTIL 10 AM PST...

At 913 AM PST, Doppler radar was tracking an area of strong
thunderstorms extending from 13 miles west of Cloverdale to 31 miles
southwest of Dillon Beach, or extending from 38 miles northwest of
Santa Rosa to 47 miles southwest of Rohnert Park, moving east at 50
mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Santa Rosa, Rohnert Park, Windsor, Healdsburg, Cloverdale,
  Sebastopol, Cotati, Larkfield-Wikiup, Roseland, South Santa Rosa
  Cdp, Tomales, Dillon Beach, Point Reyes Station, Forestville,
  Guerneville, Monte Rio, Graton, Occidental, Bodega Bay and South
  Santa Rosa.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3881 12337 3881 12314 3884 12314 3885 12308
      3885 12282 3871 12270 3867 12260 3836 12264
      3800 12283 3809 12293 3799 12296 3799 12302
      3815 12295 3823 12299 3809 12283 3834 12306
      3830 12306 3845 12313 3857 12334
TIME...MOT...LOC 1712Z 282DEG 44KT 3878 12325 3863 12318 3845 12323
3804 12346

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Sarment

Special Weather Statement
National Weather Service San Francisco CA
1032 AM PST Thu Dec 25 2025

CAZ502-504>506-251915-
Marin Coastal Range CA-North Bay Interior Valleys CA-North Bay
Interior Mountains CA-Coastal North Bay Including Point Reyes
National Seashore CA-
1032 AM PST Thu Dec 25 2025

...A STRONG THUNDERSTORM WILL IMPACT MARIN...SOUTHWESTERN NAPA AND
SOUTHEASTERN SONOMA COUNTIES UNTIL 1115 AM PST...

At 1032 AM PST, Doppler radar was tracking a strong thunderstorm 7
miles north of San Geronimo, or 8 miles west of Novato, moving
northeast at 40 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Santa Rosa, Napa, Petaluma, San Rafael, Novato, Rohnert Park,
  Sonoma, Fairfax, Cotati, St. Helena, Boyes Hot Springs, Black
  Point-Green Point, Lucas Valley-Marinwood, South Santa Rosa Cdp,
  San Geronimo, Point Reyes Station, Yountville, Temelec, El Verano
  and Glen Ellen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3816 12291 3814 12288 3817 12290 3856 12258
      3835 12220 3790 12271 3800 12282 3803 12293
      3803 12289 3804 12293 3809 12293 3806 12296
      3803 12294 3801 12298 3799 12296 3799 12302
TIME...MOT...LOC 1831Z 217DEG 35KT 3811 12270

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Sarment

Special Weather Statement
National Weather Service San Francisco CA
1039 AM PST Thu Dec 25 2025

CAZ503>506-251915-
Sonoma Coastal Range CA-North Bay Interior Valleys CA-North Bay
Interior Mountains CA-Coastal North Bay Including Point Reyes
National Seashore CA-
1039 AM PST Thu Dec 25 2025

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN SONOMA COUNTY UNTIL
1115 AM PST...

At 1039 AM PST, Doppler radar was tracking a strong thunderstorm 16
miles southwest of Cloverdale, or 31 miles northwest of Santa Rosa,
moving north at 50 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Healdsburg, Cloverdale and Guerneville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3881 12331 3881 12314 3884 12314 3884 12308
      3885 12308 3885 12282 3880 12275 3879 12275
      3875 12271 3873 12271 3842 12311 3845 12313
      3851 12325 3857 12334 3858 12334 3859 12335
TIME...MOT...LOC 1838Z 187DEG 44KT 3864 12323

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Sarment

Preliminary Local Storm Report
National Weather Service San Francisco CA
1146 AM PST Thu Dec 25 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1135 AM     Non-Tstm Wnd Dmg 12 WNW Monte Rio        38.53N 123.22W
12/25/2025                   Sonoma             CA   Law Enforcement

            CHP is reporting a tree down near Seaview
            and Fort Ross Roads.

&&

Palmer