Flash Flood Warning Issued for Southwestern Imperial County, CA
This alert is no longer in effect.
NOAA issued it on August 12, 2026, 11 days 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.
NWS Phoenix AZ has issued a Flash Flood Warning for southwestern Imperial County until 7:30 PM PDT due to thunderstorms producing heavy rain and life-threatening flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southwestern Imperial County, California
- Issued
- August 12, 2026
- Issuing authority
- NWS Phoenix AZ
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 11 days ago; use the issuing agency's live warning service for current conditions in Southwestern Imperial County, California.
Alert Details
Flash Flood Warning issued by NWS Phoenix AZ. Effective from August 12, 2026 at 4:35 PM PDT until August 12, 2026 at 7:30 PM PDT. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Southwestern Imperial County in southeastern California, including Calexico and Heber. Specific highways include CA Route 98 between mile markers 27 and 32, CA Interstate 8 between mile markers 40 and 48, CA Route 111 between mile markers 1 and 9, and CA Route 86 between mile markers 1 and 3. Streams and drainages include New River, Ash Fifteen Drain, Alamo River, and South Alamo Canal.
What You Should Do
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. Report observed flooding to local emergency services or law enforcement.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain. Between 0.25 and 1 inch of rain has fallen, with additional rainfall amounts of 0.5 to 1.5 inches possible. Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses is ongoing or expected.
Timeline
Alert effective August 12, 2026 at 4:35 PM PDT and expires August 12, 2026 at 7:30 PM PDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,290 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 12, 2026.
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