Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
1221 PM PDT Sun Aug 16 2026
CAZ038-088-343>345-351-353-371>373-375-376-379-380-548-170730-
/O.NEW.KLOX.HT.Y.0013.260818T1700Z-260821T0300Z/
Cuyama Valley-Santa Clarita Valley-Southern Salinas Valley-San
Luis Obispo County Interior Valleys-San Luis Obispo County
Mountains-Santa Ynez Mountains Western Range-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 Matilija, Newhall, San Marcos Pass, Warm
Springs, Rose Valley, New Cuyama, East Los Angeles, Wrightwood,
Caliente Range, Chatsworth, Van Nuys, Acton, San Miguel, Topatopa
Mountains, Mount Baldy, Malibu Lake, Glendale, Big Pine Mountain, La
Canada Flintridge, San Rafael Mountain, Oat Mountain, Creston,
Carrizo Plain, Universal City, Pomona, El Monte, Templeton, Paso
Robles, Sunland, Pasadena, Lake Nacimiento, Shandon, Valencia,
Westlake Village, The Angeles Crest Highway, Woodland Hills,
Atascadero, Santa Margarita Lake, Lake Castaic, Burbank, Northridge,
Figueroa Mountain, Santa Clarita, Mill Creek, Mount Wilson, La Panza
Range, and San Gabriel
1221 PM PDT Sun Aug 16 2026
...HEAT ADVISORY IN EFFECT FROM 10 AM TUESDAY TO 8 PM PDT THURSDAY...
* WHAT...High temperatures of 92 to 105 expected, with most areas
seeing peak heat on Wednesday and Thursday. Low temperatures are
expected to range from the upper 60s to lower 70s at lower
elevations to the mid 70s to lower 80s in the foothills and
mountains.
* WHERE...A portion of southwest California.
* WHEN...From 10 AM Tuesday to 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses. Warmer than
normal low temperatures will add to the heat discomfort.
* ADDITIONAL DETAILS...The heat advisory may need to be extended into
Friday for portions of the forecast area, but there remains
considerable uncertainty at this time.
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.
&&
$$
DG
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
246 AM PDT Mon Aug 17 2026
PZZ475-171600-
/O.CON.KEKA.SC.Y.0075.000000T0000Z-260817T1600Z/
Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm-
246 AM PDT Mon Aug 17 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS
MORNING...
* WHAT...North winds 20 to 25 kt with gusts up to 30 kt and seas
6 to 8 feet.
* WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to
60 nm.
* WHEN...Until 9 AM PDT this morning.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service San Francisco Bay Area
237 AM PDT Mon Aug 17 2026
PZZ570-171745-
/O.NEW.KMTR.SC.Y.0094.260818T1000Z-260818T2200Z/
Waters from Point Arena to Point Reyes 10-60 NM-
237 AM PDT Mon Aug 17 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM TO 3 PM PDT TUESDAY...
* WHAT...Northwest winds 15 to 25 kt expected.
* WHERE...Waters from Point Arena to Point Reyes 10-60 NM.
* WHEN...From 3 AM to 3 PM PDT Tuesday.
* 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
