Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
201 PM PDT Thu Sep 18 2025
PZZ571-190515-
/O.CON.KMTR.SC.Y.0166.000000T0000Z-250919T1000Z/
Waters from Point Reyes to Pigeon Point 10-60 NM-
201 PM PDT Thu Sep 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT FRIDAY...
* WHAT...Seas 8 to 11 ft.
* WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM.
* WHEN...Until 3 AM PDT Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/sanfrancisco
Flood Watch
Flood Watch
National Weather Service Hanford CA
220 PM PDT Thu Sep 18 2025
CAZ317>320-323>330-190530-
/O.CON.KHNX.FA.A.0008.000000T0000Z-250920T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mariposa Madera Foothills-Mariposa-Madera Lower Sierra-Fresno-
Tulare Foothills-Fresno-Tulare Lower Sierra-Yosemite NP outside
of the valley-Yosemite Valley-San Joaquin River Canyon-Upper San
Joaquin River-Kaiser to Rodgers Ridge-Kings Canyon NP-Grant Grove
Area-Sequoia NP-
Including the cities of Bass Lake, Yosemite Valley, Millerton
Lake, Devils Postpile, Grant Grove, Hume Lake, El Portal,
Mariposa, North Fork, Tuolumne Meadows, Wawona, Lake Thomas
Edison, Giant Forest, Cedar Grove, Lodgepole, Auberry, Fish Camp,
Florence Lake, Lake Wishon, Shaver Lake, Coarsegold, Huntington
Lake, and Oakhurst
220 PM PDT Thu Sep 18 2025
...FLOOD WATCH FOR THE BASIN AND FRENCH BURN SCARS AND THE GARNET
FIRE REMAINS IN EFFECT THROUGH FRIDAY EVENING...
* WHAT...Flash flooding and debris flows caused by excessive
rainfall are possible over the Sierra Nevada including the Basin
and French Burn Scars and the Garnet Fire.
* WHERE...A portion of central California, including the following
areas, Fresno-Tulare Foothills, Fresno-Tulare Lower Sierra, Grant
Grove Area, Kaiser to Rodgers Ridge, Kings Canyon NP, Mariposa
Madera Foothills, Mariposa-Madera Lower Sierra, San Joaquin River
Canyon, Sequoia NP, Upper San Joaquin River, Yosemite NP outside
of the valley and Yosemite Valley.
* WHEN...Through Friday evening.
* IMPACTS...Heavy rainfall over the Sierra Nevada including the
Basin and French Burn Scars and the Garnet Fire is expected up to
and during the period of the watch. Residents near the Basin and
French Burn Scars and the Garnet Fire should prepare for potential
flooding impacts. Be sure to stay up to date with information from
local authorities. Excessive runoff may result in flooding of
rivers, creeks, streams, and other low-lying and flood-prone
locations.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall in thunderstorms over the Sierra Nevada including
the burn scars, which may lead to flash flooding and debris
flows.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Special Weather Statement
Special Weather Statement
National Weather Service Eureka CA
403 PM PDT Thu Sep 18 2025
CAZ108-182330-
Southern Trinity CA-
403 PM PDT Thu Sep 18 2025
...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL TRINITY COUNTY
UNTIL 430 PM PDT...
At 403 PM PDT, Doppler radar was tracking a strong thunderstorm 20
miles south of Peanut, or 27 miles south of Hayfork, moving
northwest at 10 mph.
HAZARD...Half inch size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to outdoor objects is possible.
Locations impacted include...
Mainly rural areas of South Central Trinity County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead
to flash flooding. Do not drive your vehicle through flooded
roadways.
Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.
&&
LAT...LON 4020 12303 4014 12306 4019 12329 4032 12320
TIME...MOT...LOC 2303Z 117DEG 7KT 4019 12309
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH
$$
DB
Marine Weather Statement
Marine Weather Statement...UPDATED
National Weather Service San Francisco CA
801 AM PDT Thu Sep 18 2025
PZZ530-531-535-540-545-560-565-570-571-575-576-190600-
San Pablo Bay, Suisun Bay, the West Delta and the San Francisco
Bay north of the Bay Bridge-
San Francisco Bay South of the Bay Bridge-Monterey Bay-
Coastal Waters from Point Arena to Point Reyes California out to
10 NM-
Coastal Waters from Point Reyes to Pigeon Point California out to
10 NM-
Coastal Waters from Pigeon Point to Point Pinos California out to
10 NM-
Coastal Waters from Point Pinos to Point Piedras Blancas
California out to 10 NM-Waters from Point Arena to Point Reyes 10-
60 NM-Waters from Point Reyes to Pigeon Point 10-60 NM-
Waters from Pigeon Point to Point Pinos 10-60 NM-
Waters from Point Pinos to Point Piedras Blancas 10-60 NM-
801 AM PDT Thu Sep 18 2025
Mid to upper level moisture and instability associated with the
remnants of tropical cyclone Mario will continue to advance
northward through this evening. This will bring a slight chance
of thunderstorms to the coastal waters and bays through this
evening. Thunderstorms may produce gusty outflow winds, locally
rough seas and brief heavy rain.
$$
