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Arroyo Grande, CA Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Arroyo Grande, CA
Elevation: 175ft
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Active Weather Alerts

Flash Flood Warning
Issued: 2:09 PM Dec. 24, 2025 – National Weather Service
The National Weather Service in Los Angeles/Oxnard has issued a

* Flash Flood Warning for...
South Central San Luis Obispo County in southwestern California...
Northern Santa Barbara County in southwestern California...

* Until noon PST.

* At 609 AM PST, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Flash
flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar and automated gauges.

IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
Lompoc, Santa Ynez, Los Alamos, Buellton, Sisquoc, Figueroa
Mountain, Lake Cachuma, Highway 166 between Twitchell Dam and the
Cuyama Valley, Big Pine Mountain and Mission Hills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid flooded roads. Be aware of rock slides, mudslides, and
possibly debris flows.

&&


FLASH FLOOD...RADAR AND GAUGE INDICATED

Flood Advisory
Issued: 12:28 PM Dec. 24, 2025 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...A portion of southwest California, including the following
counties, San Luis Obispo and Santa Barbara.

* WHEN...Until noon PST Wednesday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.

* ADDITIONAL DETAILS...
- At 427 AM PST, Doppler radar and automated rain gauges
indicated heavy rain due to thunderstorms. Minor flooding is
ongoing or expected to begin shortly in the advisory area. Up
to 1.5 inches of rain have fallen.
- Some locations that will experience flooding include...
Santa Maria, San Luis Obispo, Lompoc, Paso Robles, Morro Bay,
Pismo Beach, Atascadero, Arroyo Grande, Nipomo, Vandenberg
Space Force Base, Orcutt, Cuyama, Grover Beach, Guadalupe,
Sisquoc, Black Mountain, Lake Lopez, Highway 166 between
Twitchell Dam and the Cuyama Valley, Oceano and Santa
Margarita.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

&&



Flood Watch
Issued: 8:20 AM Dec. 24, 2025 – National Weather Service
...FLOOD WATCH NOW IN EFFECT THROUGH FRIDAY AFTERNOON...

* WHAT...Significant and widespread flooding caused by excessive
rainfall will be likely, with potential debris flow impacts across
recent burn scars.

* WHERE...A portion of southwest California, including the following
areas, Antelope Valley, Calabasas and Agoura Hills, Catalina and
Santa Barbara Islands, Central Ventura County Valleys, Cuyama
Valley, Eastern Antelope Valley Foothills, Eastern San Fernando
Valley, Eastern San Gabriel Mountains, Eastern Santa Monica
Mountains Recreational Area, Interstate 5 Corridor, Lake Casitas,
Los Angeles County Beaches, Los Angeles County Inland Coast
including Downtown Los Angeles, Los Angeles County San Gabriel
Valley, Northern Ventura County Mountains, Ojai Valley, Palos
Verdes Hills, San Luis Obispo County Beaches, San Luis Obispo
County Inland Central Coast, San Luis Obispo County Interior
Valleys, San Luis Obispo County Mountains, Santa Barbara County
Central Coast Beaches, Santa Barbara County Inland Central Coast,
Santa Barbara County Interior Mountains, Santa Barbara County
Southeastern Coast, Santa Barbara County Southwestern Coast, Santa
Clarita Valley, Santa Lucia Mountains, Santa Susana Mountains,
Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western
Range, Santa Ynez Valley, Southeastern Ventura County Valleys,
Southern Salinas Valley, Southern Ventura County Mountains,
Ventura County Beaches, Ventura County Inland Coast, Western
Antelope Valley Foothills, Western San Fernando Valley, Western
San Gabriel Mountains and Highway 14 Corridor and Western Santa
Monica Mountains Recreational Area.

* WHEN...Through Friday afternoon.

* IMPACTS...This prolonged strong Atmospheric River storm system
will bring periods of heavy rain from late Tuesday into Thursday
evening. Potential flooding impacts include the threat of
significant and widespread urban roadway flooding, a high risk of
major rock/mudslides, and rapid rises in creeks, streams, and
rivers which will likely lead to swift water rescues. The recent
burn scars will be at risk for debris flows, possibly damaging.
These flooding impacts will likely lead to significant travel
delays and road closures during this busy holiday travel period.

* ADDITIONAL DETAILS...
- Heavy rainfall with possible thunderstorms is expected with
high rainfall rates, potentially exceeding one inch per hour
during the peak of the event Tuesday night into Wednesday
across favored south facing slopes and near thunderstorms.
Another round of heavier rain and thunderstorms will be
possible on Thursday.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

High Wind Warning
Issued: 8:19 PM Dec. 23, 2025 – National Weather Service
...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM PST THURSDAY...

* WHAT...South to southeast winds 30 to 50 mph with damaging gusts
up to 70 mph likely, except up to 80 mph in the mountains and
foothills.

* WHERE...All of San Luis Obispo and Santa Barbara counties, the
mountains and foothills of Los Angeles and Ventura counties, and
the Antelope Valley.

* WHEN...Until 3 PM PST Thursday.

* IMPACTS...Damaging winds are likely with this powerful Atmospheric
River storm, with widespread downed trees and powerlines likely,
as well as the potential for power outages and property damage.
Travel will be difficult, especially for high profile vehicles.
Mountain roadways and passes will be especially dangerous,
including the busy Interstate 5 near the Grapevine. The
combination of strong winds and moist soils will increase the risk
for downed trees.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Watch for falling debris and tree limbs. Use caution if you must
drive. Secure loose outdoor objects that could be blown around or
damaged by the wind.

&&

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