Flash Flood Warning Issued for Eastern Los Angeles County Through Monday Afternoon
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service has issued a Flash Flood Warning for eastern Los Angeles County as heavy rain triggers life-threatening flooding, mud slides, and debris flows.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Eastern Los Angeles County
- Issued
- April 6, 2026
- Issuing authority
- NWS Los Angeles/Oxnard CA
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Eastern Los Angeles County.
Alert Details
The National Weather Service in Los Angeles/Oxnard has issued a Flash Flood Warning for eastern Los Angeles County in southwestern California. The alert was issued at 12:01 PM PST on February 16 and remains in effect until 2:00 PM PST.
Affected Areas
The warning covers eastern portions of Los Angeles County. Specific locations expected to experience flash flooding include:
- Long Beach, West Covina, Glendora, San Dimas, and Pomona
- Whittier, La Verne, Covina, Azusa, and Baldwin Park
- Diamond Bar, Hacienda Heights, Monrovia, Claremont, and Santa Fe Springs
- Norwalk, Cerritos, Artesia, Bellflower, and Walnut
What You Should Do
Residents and travelers in the warned area are advised to take the following precautions:
- Turn around, don't drown: Do not attempt to drive through flooded roads. Most flood-related deaths occur in vehicles.
- Report Flooding: If you observe flooding, report it to local emergency services or law enforcement when you can do so safely, and request they pass the information to the National Weather Service.
- Avoid Hazard Zones: Stay away from areas prone to rock slides and mud slides, especially near burn scars.
Expected Conditions
Doppler radar and automated rain gauges indicate that thunderstorms are producing heavy rain across the region. Observed rainfall rates are between 0.5 and 0.75 inches every 15 minutes.
Hazards include:
- Life-threatening flash flooding: Flooding is already occurring or expected to begin shortly.
- Debris Flows: Significant rock slides and mud slides are expected, specifically including the Bridge Burn Scar area.
Timeline
The Flash Flood Warning is effective immediately as of 12:01 PM PST, Monday, February 16, 2026. The warning is currently scheduled to expire at 2:00 PM PST.
Original source: NOAA Official Notice ↗
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