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DisasterStatus

Severe · Inactive

California Riverside Flooding — August 2026

Possible damage: Water Mold

5 concurrent flood warnings — 3 counties affected

Active floods

Updated
Severe significance Inactive 3 areas · CA · Last updated · source: NOAA / National Weather Service

Evacuations issued during this event

  • Evacuation orderUS-CA-XSD-SDC-2331 — San Diego County issued · alert expired
  • Evacuation warningUS-CA-XSD-SDC-2333 — San Diego County issued · alert expired
  • Evacuation warningUS-CA-XSD-SDC-2332 — San Diego County issued · alert expired

Historical record from Cal OES — alert times shown are when each WEA message was issued and expired; the evacuation itself may have remained in force longer (lift times aren't published to IPAWS).

This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.

5 concurrent flood warnings — 3 counties affected

A severe flood outbreak affected Riverside, San Diego, and San Bernardino counties from August 11 to 12, 2026. Homes in the affected areas face water damage and mold risk from the flooding.

Overview written from official NOAA / National Weather Service data.

Type
Flood Outbreak
Extent
≈ 432,451 acres
Began
To end

Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.

Affected area map

Each shaded area is one covered warning's reported footprint — this outbreak groups the 5 warnings listed below, colored by hazard type. Press Play below to watch each footprint appear in the order it was issued. Pan and zoom to explore the map.

Interactive affected-area map

Riverside County, CA; San Diego County, CA; San Bernardino County, CA · ≈ 680 sq mi reported extent · Enable JavaScript to explore the map.

reported perimeter · evacuation orders as issued (dashed): order warning / shelter

Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.

Restoration help near this event

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Water damage restoration

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Mold remediation

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Latest updates

Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.

  1. News Fresno Bee

    UPDATE: Riverside County placed under a flash flood warning Wednesday night

    Read the full article at Fresno Bee ↗

  2. News Sacramento Bee

    Flash flood warning affecting Riverside and San Diego counties early Tuesday evening

    Read the full article at Sacramento Bee ↗

  3. Bulletin NWS Las Vegas NV

    Flash Flood Warning issued

    San Bernardino, CA

    Read the full bulletin at NWS Las Vegas NV ↗

  4. Bulletin NWS San Diego CA

    Flash Flood Warning issued

    San Diego, CA

    Read the full bulletin at NWS San Diego CA ↗

Show 13 earlier updates
  1. NWS San Diego CA Bulletin

    Flash Flood Warning issued

  2. NWS San Diego CA Bulletin

    Flash Flood Warning issued

  3. NWS San Diego CA Bulletin

    Flash Flood Warning issued

  4. sbsun.com News

    Flash flood warning affecting Riverside County early Monday evening – considerable damage threat

  5. Spectrum News 13 News

    Volunteers help clean Riverside Park following flood

  6. Modesto Bee News

    Flash flood warning in place for Riverside County early Monday evening

  7. Merced Sun-Star News

    Severe thunderstorm warning affecting Riverside County Monday afternoon

  8. Merced Sun-Star News

    San Diego County placed under a flood advisory Monday afternoon, says the NWS

  9. San Luis Obispo Tribune News

    UPDATE: Coastal flood advisory affecting San Diego County Coastal Areas and Orange County Coastal

  10. Daily Bulletin News

    Riverside and San Diego counties placed under a flood advisory early Sunday evening due to substantial downpours

  11. Modesto Bee News

    Flood advisory in place for Riverside and San Diego counties early Sunday evening

  12. Los Angeles Times News

    SoCal heat wave: Triple-digit temperatures, fire weather and coastal flooding in store

  13. Orange County Register News

    Coastal flood advisory issued for Orange County Coast and San Diego County Coastal Areas from Monday to Wednesday

Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.

Warnings covered

Warnings this outbreak covered

This page tracks the outbreak as a whole; each entry below is one official warning thread with its own live status, map and update log.

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