Severe Thunderstorm Warning Issued for Orange, Riverside, and San Bernardino Counties

Alert Details

The National Weather Service in San Diego has issued a Severe Thunderstorm Warning for portions of Southern California. The alert was issued at 1:26 AM PST on February 18, 2026, and is effective immediately.

Affected Areas

The warning covers the following geographic regions in Southern California:

• Orange County
• Riverside County
• San Bernardino County

Specific locations impacted include Anaheim, Santa Ana, Riverside, Irvine, Fontana, Moreno Valley, Huntington Beach, Garden Grove, Ontario, Corona, Orange, Fullerton, Costa Mesa, Rialto, Mission Viejo, Chino, Tustin, Yorba Linda, Stanton, and Seal Beach.

What You Should Do

For your protection, move to an interior room on the lowest floor of a building. Residents should stay away from windows and remain indoors until the storm has passed.

Expected Conditions

• Hazard: 60 mph wind gusts.
• Source: Radar indicated.
• Impact: Expect damage to roofs, siding, and trees.

Timeline

The warning is in effect until 2:30 AM PST on February 18, 2026. At 1:24 AM PST, a band of severe thunderstorms was located near the Los Angeles-Orange County line moving slowly southeast. The system is expected to move through northern Orange County and the northwest Inland Empire through the duration of the warning period.