Weather alerts California: NWS warnings, watches & advisories

Active alerts for California

9 alerts

2 warnings · 0 watches · 7 advisories / statements

Severe

Freeze Warning

Freeze Warning issued October 28 at 10:53AM PDT until October 29 at 9:00AM PDT by NWS Eureka CA

Begins: 1:00 AM PDT, Thu Oct 29
Until: 9:00 AM PDT, Thu Oct 29
Urgency / certainty: Expected / Likely
Areas: Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake
Issued by: NWS Eureka CA

Read the full alert

* WHAT...Sub-freezing temperatures as low as 28 expected.

* WHERE...Northern Mendocino Interior, and Northern Lake.

* WHEN...From 1 AM to 9 AM PDT Thursday.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

What to do: Take steps now to protect tender plants from the cold.

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.

Severe

Coastal Flood Warning

Coastal Flood Warning issued October 29 at 1:44AM PDT until October 29 at 1:00PM PDT by NWS San Diego CA

Begins: 1:44 AM PDT, Thu Oct 29
Until: 1:00 PM PDT, Thu Oct 29
Urgency / certainty: Expected / Likely
Areas: San Diego County Coastal Areas; Orange County Coastal
Issued by: NWS San Diego CA

Read the full alert

* WHAT...For the Coastal Flood Warning, significant coastal
flooding. For the Coastal Flood Advisory, minor coastal
flooding expected.

* WHERE...San Diego County Coastal Areas and Orange County
Coastal Areas.

* WHEN...For the Coastal Flood Warning, until 1 PM PDT today. For
the Coastal Flood Advisory, from 1 PM today to 2 PM PDT Friday.

* IMPACTS...Numerous roads may be closed. Low lying property
including homes, businesses, and some critical infrastructure
will be inundated. Some shoreline erosion will occur.

* ADDITIONAL DETAILS...Coastal residents and managers of
infrastructure in the warned/advisory area should prepare for
rising water and take appropriate action to protect life and
property. Highest tides will occur around 11 AM today and noon
on Friday. Observed high tides are 1.4 to 1.6 feet above
astronomical tide predictions.

What to do: Take the necessary actions to protect flood-prone property. If
travel is required, do not drive around barricades or through
water of unknown depth.

Minor

Coastal Flood Advisory

Coastal Flood Advisory issued October 28 at 11:39AM PDT until October 30 at 2:00PM PDT by NWS Los Angeles/Oxnard CA

Begins: 11:39 AM PDT, Wed Oct 28
Until: 2:00 PM PDT, Fri Oct 30
Urgency / certainty: Expected / Likely
Areas: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches
Issued by: NWS Los Angeles/Oxnard CA

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* WHAT...Minor to moderate coastal flooding expected due to very
high tides.

* WHERE...San Luis Obispo County Beaches, Santa Barbara County
Central Coast Beaches, Santa Barbara County Southwestern
Coast, Santa Barbara County Southeastern Coast, Ventura County
Beaches, Malibu Coast and Los Angeles County Beaches.

* WHEN...Until 2 PM PDT Friday.

* IMPACTS...Minor to moderate flooding of sea water is likely
over vulnerable low-lying coastal areas, especially around the
time of high tide, including over beach parking lots, bike
paths, and harbor walkways. Moderate to significant beach
erosion is likely. Isolated damage of structures due to sea
water inundation is possible to the most vulnerable areas.

* ADDITIONAL DETAILS...High tides will likely reach 7.5-8.0 feet
(MLLW) late morning Thursday, which is 1.0 to 1.5 feet above
astronomical projections. Decreasing some on Friday but still
expecting near 7.5 feet (MLLW) around noon.

What to do: Take the necessary actions to protect flood-prone property. Do
NOT drive around barricades or through water of unknown depth.

Minor

Coastal Flood Advisory

Coastal Flood Advisory issued October 28 at 11:39AM PDT until October 30 at 2:00PM PDT by NWS Los Angeles/Oxnard CA

Begins: 11:39 AM PDT, Wed Oct 28
Until: 2:00 PM PDT, Fri Oct 30
Urgency / certainty: Expected / Likely
Areas: Catalina and Santa Barbara Islands
Issued by: NWS Los Angeles/Oxnard CA

Read the full alert

* WHAT...Minor to moderate coastal flooding expected due to very
high tides.

* WHERE...Catalina and Santa Barbara Islands.

* WHEN...Until 2 PM PDT Friday.

* IMPACTS...Minor to moderate flooding of sea water is likely
over vulnerable low-lying coastal areas, especially around the
time of high tide, including over beach parking lots, bike
paths, and harbor walkways. Moderate to significant beach
erosion is likely. Isolated damage of structures due to sea
water inundation is possible to the most vulnerable areas.

* ADDITIONAL DETAILS...High tides will likely reach 7.5-8.0 feet
(MLLW) late morning Thursday, which is 1.0 to 1.5 feet above
astronomical projections. Decreasing some on Friday but still
expecting near 7.5 feet (MLLW) around noon.

What to do: Take the necessary actions to protect flood-prone property. Do
NOT drive around barricades or through water of unknown depth.

Minor

Coastal Flood Advisory

Coastal Flood Advisory issued October 28 at 1:46PM PDT until October 30 at 5:00PM PDT by NWS San Francisco CA

Begins: 1:46 PM PDT, Wed Oct 28
Until: 5:00 PM PDT, Fri Oct 30
Urgency / certainty: Expected / Likely
Areas: Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast
Issued by: NWS San Francisco CA

Read the full alert

* WHAT...Up to 1.9 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.

* WHERE...Pacific Coast.

* WHEN...Until 5 PM PDT Friday.

* IMPACTS...High tides will result in flooding of low-lying
infrastructure, isolated road closures, and coastal erosion.
Rising tides will bring water and waves farther up the beach
than normal, restricting escape from beaches and coastal areas.

* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide
is expected to be 1.9 ft above normal (7.7 ft MLLW) at 01:43 PM
Thursday 10/29, and 1.6 ft above normal (7.4 ft MLLW) at 02:39
PM Friday 10/30. These predictions include up to 1.2 ft of surge
that will enhance the astronomical tide and flooding threat.
High tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.

What to do: If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Minor

Coastal Flood Advisory

Coastal Flood Advisory issued October 28 at 1:46PM PDT until October 31 at 6:00PM PDT by NWS San Francisco CA

Begins: 1:46 PM PDT, Wed Oct 28
Until: 6:00 PM PDT, Sat Oct 31
Urgency / certainty: Expected / Likely
Areas: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Issued by: NWS San Francisco CA

Read the full alert

* WHAT...Up to 1.9 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.

* WHERE...Bay Shoreline locations of San Pablo Bay, San
Francisco Bay, and Monterey Bay.

* WHEN...Until 6 PM PDT Saturday.

* IMPACTS...High tides will result in flooding of low-lying
infrastructure, isolated road closures, and coastal erosion.
Rising tides will bring water and waves farther up the beach
than normal, restricting escape from beaches and coastal
areas. More substantial impacts are expected along bayshore
Marin County where increased flooding is anticipated across
low lying areas.

* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide
is expected to be 1.9 ft above normal (7.7 ft MLLW) at 01:43 PM
Thursday 10/29, 1.6 ft above normal (7.4 ft MLLW) at 02:39 PM
Friday 10/30, and 1.1 feet above normal (6.9 ft MLLW) at 03:44
PM on Saturday 10/31. These predictions include up to 1.2 ft of
surge that will enhance the astronomical tide and flooding
threat. High tide varies up to 90 minutes earlier or later along
the Pacific Coast and through the San Francisco Bay,
respectively.

Minor

Frost Advisory

Frost Advisory issued October 28 at 10:53AM PDT until October 29 at 9:00AM PDT by NWS Eureka CA

Begins: 1:00 AM PDT, Thu Oct 29
Until: 9:00 AM PDT, Thu Oct 29
Urgency / certainty: Expected / Likely
Areas: Coastal Del Norte; Interior Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Northeastern Interior Humboldt; Southeastern Interior Humboldt; Coastal Mendocino; Southwestern Interior Mendocino
Issued by: NWS Eureka CA

Read the full alert

* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Del Norte, Humboldt, and Mendocino Coast, Humboldt
Interior, Interior Del Norte, and Southwestern Interior Mendocino.

* WHEN...From 1 AM to 9 AM PDT Thursday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.

* ADDITIONAL DETAILS...Some valleys, especially closer to the coast,
may experience low cloud cover and/or fog, which will limit the
potential for frost.

What to do: Take steps now to protect tender plants from the cold.

Minor

Coastal Flood Advisory

Coastal Flood Advisory issued October 29 at 1:44AM PDT until October 30 at 2:00PM PDT by NWS San Diego CA

Begins: 1:00 PM PDT, Thu Oct 29
Until: 2:00 PM PDT, Fri Oct 30
Urgency / certainty: Expected / Likely
Areas: San Diego County Coastal Areas; Orange County Coastal
Issued by: NWS San Diego CA

Read the full alert

What to do: Take the necessary actions to protect flood-prone property. If
travel is required, do not drive around barricades or through
water of unknown depth.

Minor

Coastal Flood Advisory

Coastal Flood Advisory issued October 28 at 2:47PM PDT until October 29 at 4:00PM PDT by NWS Eureka CA

Begins: 1:00 PM PDT, Thu Oct 29
Until: 4:00 PM PDT, Thu Oct 29
Urgency / certainty: Expected / Likely
Areas: Northern Coastal Humboldt
Issued by: NWS Eureka CA

Read the full alert

* WHAT...High astronomical tides will cause minor flooding in low
lying areas around Humboldt Bay. Up to one half foot of
saltwater inundation above ground level is possible near
shorelines and tidal waterways. Between 9.0 and 9.3 feet MLLW
at the North Spit tide gauge is predicted.

* WHERE...Northern Coastal Humboldt County.

* WHEN...From 1 PM to 4 PM PDT Thursday. High tide is at 1:59 PM
at the Humboldt Bay North Spit tide gauge. Saltwater inundation
will be possible 1 to 2 hours before and after high tide.

* IMPACTS...Flooding of low lying areas around Humboldt Bay
including parks and roads with only isolated closures expected.
Flooding will likely impact Jackson Ranch Road in the Arcata
Bottoms and several roads in King Salmon.

What to do: A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.

Source: National Weather Service (api.weather.gov), updated every few minutes. Times are shown in PDT. In an emergency, follow the instructions of local officials.

Counties under an alert in California

Warning, watch or advisory?

Warning: hazardous weather is happening or about to happen. Take action now to protect life and property.
Watch: conditions are favorable for hazardous weather. Be prepared and stay alert.
Advisory: weather that is less serious but still a nuisance or hazard; use caution.

Stay safe in severe weather

Tornadoes: go to a basement or an interior room on the lowest floor, away from windows; leave mobile homes for a sturdy shelter.
Severe thunderstorms and lightning: when thunder roars, go indoors; avoid open fields, hilltops, water and tall isolated trees.
Flash floods: move to higher ground and never walk or drive through flood water — turn around, don't drown.
Hurricanes and tropical storms: know your evacuation zone, secure your home and prepare a kit with water, food, medicine and a flashlight. See the Hurricane tracker.
Winter storms and extreme cold: avoid travel, keep an emergency kit in your car and never run a generator indoors.
Extreme heat: limit time outdoors in the afternoon, drink plenty of water and check on older neighbors; never leave children or pets in a car.

Official sources: National Weather Service (weather.gov), National Hurricane Center (nhc.noaa.gov), FEMA (ready.gov) and your state and local emergency management agencies.

More forecasts for California

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Current weather in California

48°

clear sky · Feels like 48°

Low/High: 48° / 70°
Humidity: 81%
Wind: 0 mph
Pressure: 29.94 inHg
Visibility: 6.2 mi
UV: 0

See today in detail

Air quality California

1/5

Good

Clean air, ideal for outdoor activities.

PM_2.5: 9
PM₁₀: 16.3
O₃: 44.9
NO₂: 25.8
SO₂: 2.4
CO: 254.8
NH₃: 0.4
NO: 0

Unit: μg/m³

Sunrise & sunset

Sunrise7:29 AM

Daylight10h 40m

Sunset6:09 PM