Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
733 PM PDT Tue Aug 18 2026
CAZ038-088-343>345-353-371>373-375-376-379-380-548-190900-
/O.CON.KLOX.HT.Y.0013.000000T0000Z-260821T0300Z/
Cuyama Valley-Santa Clarita Valley-Southern Salinas Valley-San
Luis Obispo County Interior Valleys-San Luis Obispo County
Mountains-Santa Barbara County Interior Mountains-Calabasas and
Agoura Hills-Western San Fernando Valley-Eastern San Fernando
Valley-Santa Susana Mountains-Southern Ventura County Mountains-
Western San Gabriel Mountains and Highway 14 Corridor-Eastern San
Gabriel Mountains-Los Angeles County San Gabriel Valley-
Including the cities of Oat Mountain, Lake Nacimiento, La Canada
Flintridge, Warm Springs, Mount Wilson, San Miguel, San Gabriel,
Mount Baldy, Templeton, Malibu Lake, Wrightwood, Pomona, Santa
Clarita, Burbank, The Angeles Crest Highway, Woodland Hills,
Matilija, Carrizo Plain, Van Nuys, Santa Margarita Lake, La Panza
Range, Paso Robles, Sunland, Universal City, Pasadena, Shandon,
Westlake Village, Valencia, Creston, East Los Angeles, Big Pine
Mountain, Chatsworth, Glendale, Newhall, San Rafael Mountain, Mill
Creek, Atascadero, Caliente Range, Acton, Figueroa Mountain, Lake
Castaic, Northridge, Rose Valley, El Monte, Topatopa Mountains, and
New Cuyama
733 PM PDT Tue Aug 18 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...
* WHAT...High temperatures ranging from 95 to 105 degrees. Low
temperatures in the upper 60s to lower 70s, except mid 70s to lower
80s in the foothills and mountains.
* WHERE...A portion of southwest California.
* WHEN...Until 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses. Warmer than
normal low temperatures will add to the heat discomfort.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
DG/LP
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1002 PM PDT Tue Aug 18 2026
PZZ455-191000-
/O.CON.KEKA.SC.Y.0075.000000T0000Z-260819T1000Z/
Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm-
1002 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
WEDNESDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts to 30 kt and seas
7 to 10 feet.
* WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out
10 nm.
* WHEN...Until 3 AM PDT Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1002 PM PDT Tue Aug 18 2026
PZZ475-191315-
/O.CON.KEKA.SC.Y.0075.000000T0000Z-260820T1600Z/
Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm-
1002 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT
THURSDAY...
* WHAT...North winds 15 to 25 kt with localized gusts to 35 kt
and seas 7 to 10 feet.
* WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to
60 nm.
* WHEN...Until 9 AM PDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
802 PM PDT Tue Aug 18 2026
PZZ540-191115-
/O.CON.KMTR.SC.Y.0094.260819T2200Z-260820T1000Z/
Coastal Waters from Point Arena to Point Reyes California out to
10 NM-
802 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM WEDNESDAY TO
3 AM PDT THURSDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt.
* WHERE...Coastal Waters from Point Arena to Point Reyes
California out to 10 NM.
* WHEN...From 3 PM Wednesday to 3 AM PDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
802 PM PDT Tue Aug 18 2026
PZZ565-191115-
/O.CON.KMTR.SC.Y.0094.260819T2200Z-260820T1000Z/
Coastal Waters from Point Pinos to Point Piedras Blancas
California out to 10 NM-
802 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM WEDNESDAY TO
3 AM PDT THURSDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt.
* WHERE...Coastal Waters from Point Pinos to Point Piedras
Blancas California out to 10 NM.
* WHEN...From 3 PM Wednesday to 3 AM PDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/sanfrancisco
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
802 PM PDT Tue Aug 18 2026
PZZ570-191115-
/O.CON.KMTR.SC.Y.0094.000000T0000Z-260820T1000Z/
Waters from Point Arena to Point Reyes 10-60 NM-
802 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
THURSDAY...
* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and
seas 8 to 10 ft.
* WHERE...Waters from Point Arena to Point Reyes 10-60 NM.
* WHEN...Until 3 AM PDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
802 PM PDT Tue Aug 18 2026
PZZ571-191115-
/O.CON.KMTR.SC.Y.0095.260819T0400Z-260820T1000Z/
Waters from Point Reyes to Pigeon Point 10-60 NM-
802 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
THURSDAY...
* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt.
* WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM.
* WHEN...From 9 PM this evening to 3 AM PDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
115 PM PDT Tue Aug 18 2026
PZZ670-191015-
/O.EXT.KLOX.SC.Y.0116.000000T0000Z-260820T1000Z/
Point Piedras Blancas to Point Sal from 10 to 60 NM-
115 PM PDT Tue Aug 18 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT THURSDAY...
* WHAT...Hazardous sea conditions.
* WHERE...Point Piedras Blancas to Point Sal from 10 to 60 NM.
* WHEN...Until 3 AM PDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.
* ADDITIONAL DETAILS...See the Coastal Waters Forecast (CWFLOX)
for more.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
