Active watches, warnings and advisories affecting California, retrieved from the National Weather Service. Always follow instructions from the issuing weather office and local emergency authorities.
Lake Wind Advisory
Lake Wind Advisory issued September 16 at 6:57PM PDT until September 17 at 12:00AM PDT by NWS Hanford CA
- Affected area
- West Side Mountains north of 198
- Effective
- Sep 16, 2026 6:57 PM PDT
- Expires
- Sep 17, 2026 12:00 AM PDT
Alert details
* WHAT...West winds 10 to 20 mph with gusts up to 35 mph.
* WHERE...San Luis Reservoir.
* WHEN...Until midnight PDT tonight.
* IMPACTS...Strong winds and rough waves on area lakes will create
hazardous conditions for small craft.
* ADDITIONAL DETAILS...Highways impacted include State Route 152.
Flash Flood Warning
Flash Flood Warning issued September 16 at 6:51PM PDT until September 16 at 9:30PM PDT by NWS Las Vegas NV
- Affected area
- Mohave, AZ; San Bernardino, CA
- Effective
- Sep 16, 2026 6:51 PM PDT
- Expires
- Sep 16, 2026 9:30 PM PDT
Alert details
At 651 PM PDT /651 PM MST/, Doppler radar indicated thunderstorms
producing heavy rain across the warned area. Between 1 and 2 inches
of rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Lake Havasu City, Parker Dam, Alamo Lake, Cattail Cove State Park,
Black Meadow Landing Campground, Three Dunes Campground, Earp and
Big River.
Official instructions
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Air Quality Alert
Air Quality Alert issued September 15 at 5:02PM MST by NWS Phoenix AZ
- Affected area
- Imperial County Southwest; Imperial County West; Imperial Valley
- Effective
- Sep 15, 2026 5:02 PM PDT
- Expires
- Sep 17, 2026 12:00 AM PDT
Alert details
* WHAT...The Imperial County APCD has issued an air quality alert
due to increased fine particle pollution from wildfire smoke.
Visit https://www.aqmd.gov/alertinfo to check current and forecasted
air quality levels.
* WHERE...Smoke from a fire in Mexico is moving towards western
Imperial County.. Levels of particle pollution can vary by time and
location depending on fire activity and local weather conditions.
* WHEN...tonight September 15 2026.
* IMPACTS...Particles in wildfire smoke can get deep into the lungs
and cause serious health problems such as heart attacks, strokes,
asthma attacks, and difficulty breathing. Everyone can be affected,
but people with lung or heart disease, older adults, people who are
pregnant, children, and those who spend a lot of time outdoors are
at greater risk.
Official instructions
To protect your health, if you smell or see smoke:
* Remain indoors with windows and doors closed
* Avoid intense outdoor physical activity
* Run your air conditioner and/or an air purifier
* If you must be outdoors, keep the time brief and wear a well-
fitting N-95 mask
* Do not use whole house fans or swamp coolers that bring in
outside air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, grilling, and gasoline-powered lawn and garden
equipment