Flash Flood Warning Issued for Eastern Los Angeles County Through Monday Afternoon

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.