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OCINT

Independent civic dashboard for Orange County · AI briefings from public feeds · Not an emergency service (call 911) · Not government / not OCIAC · About

ARCHIVEDSEV 3 · HIGHUPDATED about 1 month ago
▸ SITUATION

OC Extreme Heat and Coastal Compound Hazard Weekend

NWS Extreme Heat Warning (inland) and Heat Advisory (coast) for Orange County expired the evening of August 2, 2026. The multi-hazard weekend of heat, king tides, coastal advisories, and related SCE outages is resolved; West Nile virus risk continues under a separate active Situation.

MACHINE-READABLE markdown · JSON

CITIES AFFECTED
COUNTYWIDELAGUNA BEACHLAGUNA NIGUELSAN CLEMENTE
STARTED
2 months ago
Jul 27, 2026, 17:00 PT
EVIDENCE
18 items · 2 areas
SITUATION MAP
2 areas · 18 signals
WHO

NWS San Diego (weather advisories), SCE (outage reporting), OC Health (West Nile alert), OC Vector Control (mosquito warning), City of Santa Ana (cooling centers). Highest-risk populations: residents without air conditioning, older adults, children, people with chronic illness.

WHAT

Multi-hazard event: NWS Extreme Heat Warning (inland) and Heat Advisory (coast) through August 2, concurrent High Surf and Coastal Flood advisories, SCE power outages in at least six cities, and an OC Health alert for early and intense West Nile Virus activity.

WHERE

Orange County, California — inland areas under Extreme Heat Warning; coastal areas (Newport Beach, Huntington Beach, Seal Beach, Laguna Niguel and south) under Heat/Surf/Coastal Flood advisories; outages confirmed in Tustin, Santa Ana, Huntington Beach, Irvine, La Habra, Costa Mesa, and Newport Beach.

WHEN

Heat warnings and advisories in effect from July 28 through August 2, 2026. King tide cycles continue through early August. Outages reported July 30 beginning ~09:00 UTC.

WHY

A persistent high-pressure ridge is driving dangerous inland heat; coastal swell and astronomical king-tide alignment are compounding coastal hazards. Elevated grid demand during the heat wave is stressing the SCE distribution network. Warm conditions are accelerating West Nile Virus transmission cycles.

▸ NARRATIVE
Status: Resolved

As of the evening of August 2, 2026, National Weather Service Extreme Heat Warning (Orange County inland) and Heat Advisory (OC coastal) products expired. No successor heat products were in effect as of the August 4 review. This multi-hazard weekend Situation is resolved.

What Happened

From roughly July 28 through August 2, 2026, Orange County faced concurrent hazards: inland extreme heat, coastal heat/high surf/coastal flood advisories, king-tide evening highs near 6.0–6.1 ft (MLLW), SCE outages in multiple cities, and elevated West Nile virus risk during peak outdoor heat.

Santa Ana activated cooling centers through August 2. SCE outages were reported in Irvine, Santa Ana, Huntington Beach, Newport Beach, Costa Mesa, La Habra, and Tustin during the heat peak.

Related Ongoing Risk

West Nile virus activity remains a separate public-health Situation — heat co-factor language no longer applies to this resolved weather event. See OC Health Flags Early and Intense West Nile Virus Activity.

Record

This page is retained as a resolved multi-hazard record, not a live response Situation.

▸ EVENT TIMELINE
12 moments
  1. Jul 27, 13:00(2 months ago)

    Voice of OC reports OC Mosquito Control warns of West Nile Virus activity.

    NEWVoice of OC: Orange County Mosquito Control Warns of West N…
  2. Jul 27, 17:00(2 months ago)

    Multi-hazard event period begins; heat, surf, and coastal flood conditions develop across Orange County.

  3. Jul 29, 14:38(2 months ago)

    City of Santa Ana announces cooling centers activated through August 2 in response to Extreme Heat Warning.

    NEWSanta Ana: Extreme heat warning July 31 to Aug. 2, 2026: Be…
  4. Jul 29, 16:18(2 months ago)

    OC Health issues communicable disease health alert: early and intense West Nile Virus activity confirmed for 2026 season.

    HTHOC Health: CD HEALTH ALERT: Early and Intense West Nile Vir…
  5. Jul 29, 16:31(2 months ago)

    NOAA tide forecast: king tide of 6.1 ft (MLLW) predicted at ~21:43 local time July 29 for OC coastal stations.

    FLDKing Tide Forecast — 6.1ft at 21:43
  6. Jul 30, 02:00(2 months ago)

    SCE reports power outage in Irvine; additional outages follow in Santa Ana, Huntington Beach, and Newport Beach by 09:30 UTC.

    PWRPower Outage — IrvinePWRPower Outage — Santa AnaPWRPower Outage — Huntington BeachPWRPower Outage — Newport Beach
  7. Jul 30, 02:12(2 months ago)

    NWS San Diego issues Extreme Heat Warning for OC inland areas and Heat Advisory for OC coastal areas.

    WTHExtreme Heat Warning — Orange County InlandWTHHeat Advisory — Orange County Coastal
  8. Jul 30, 02:45(2 months ago)

    SCE reports power outage in Costa Mesa.

    PWRPower Outage — Costa Mesa
  9. Jul 30, 03:51(2 months ago)

    SCE reports power outage in La Habra.

    PWRPower Outage — La Habra
  10. Jul 30, 13:08(2 months ago)

    NWS issues High Surf Advisory and Coastal Flood Advisory for Orange County and San Diego County coastal areas.

    CSTCoastal Flood Advisory — San Diego County Coastal Areas; Or…CSTHigh Surf Advisory — San Diego County Coastal Areas; Orange…
  11. Jul 30, 14:00(2 months ago)

    SCE reports power outage in Tustin.

    PWRPower Outage — Tustin
  12. Jul 30, 14:01(2 months ago)

    NOAA tide forecast: king tide of 6.0 ft (MLLW) predicted at ~22:15 local time July 30 for OC coastal stations.

    FLDKing Tide Forecast — 6.0ft at 22:15
▸ EVIDENCE
18 items
  1. FLD2 months ago
    King Tide Forecast — 6.0ft at 22:15

    Today's tides — Low -0.5ft @ 04:51, High 4.2ft @ 11:16, Low 2.1ft @ 16:09, High 6.0ft @ 22:15

  2. PWRTustin2 months ago
    Power Outage — Tustin

    16 customers affected — Upgrading Equipment

  3. AQISaddleback Vly2 months ago
    Air Quality — Moderate (AQI 54)

    AQI 54 Moderate — PM2.5

  4. CST2 months ago
    High Surf Advisory — San Diego County Coastal Areas; Orange County Coastal

    High Surf Advisory issued July 30 at 1:08PM PDT until August 1 at 5:00PM PDT by NWS San Diego CA

  5. CST2 months ago
    Coastal Flood Advisory — San Diego County Coastal Areas; Orange County Coastal

    Coastal Flood Advisory issued July 30 at 1:08PM PDT until August 1 at 3:00AM PDT by NWS San Diego CA

  6. PWRLa Habra2 months ago
    Power Outage — La Habra

    16 customers affected — Equipment Problems

  7. PWRCosta Mesa2 months ago
    Power Outage — Costa Mesa

    76 customers affected — Pole Upgrade

  8. PWRSanta Ana2 months ago
    Power Outage — Santa Ana

    75 customers affected — Cable Upgrade

  9. PWRHuntington Beach2 months ago
    Power Outage — Huntington Beach

    23 customers affected — Upgrading Equipment

  10. PWRNewport Beach2 months ago
    Power Outage — Newport Beach

    29 customers affected — Upgrading Equipment

  11. WTH2 months ago
    Heat Advisory — Orange County Coastal

    Heat Advisory issued July 30 at 2:12AM PDT until August 2 at 8:00PM PDT by NWS San Diego CA

  12. WTH2 months ago
    Extreme Heat Warning — Orange County Inland

    Extreme Heat Warning issued July 30 at 2:12AM PDT until August 2 at 8:00PM PDT by NWS San Diego CA

  13. PWRIrvine2 months ago
    Power Outage — Irvine

    174 customers affected — Upgrading Equipment

  14. WTH2 months ago
    Heat Advisory — Orange County Coastal

    Heat Advisory issued July 29 at 9:00PM PDT until August 2 at 8:00PM PDT by NWS San Diego CA

  15. FLD2 months ago
    King Tide Forecast — 6.1ft at 21:43

    Today's tides — Low -0.6ft @ 04:24, High 4.0ft @ 10:52, Low 2.2ft @ 15:33, High 6.1ft @ 21:43

  16. HTH2 months ago
    OC Health: CD HEALTH ALERT: Early and Intense West Nile Virus Activity; New West Nile Virus Diagnostics

    CD HEALTH ALERT: Early and Intense West Nile Virus Activity; New West Nile Virus Diagnostics July 29, 2026 mi.le Wed, 07/29/2026 - 16:18 Body Key Messages:Multiple detections of West Nile Virus (WNV)-positive mosquitoes in Orange County and a much higher-than-usual number of human WNV cases in Calif

  17. NEW2 months ago
    Santa Ana: Extreme heat warning July 31 to Aug. 2, 2026: Beat the heat at City cooling centers

    The National Weather Service has issued an extreme heat warning for inland Orange County areas, including Santa Ana, from 10 a.m. Friday, July 31 to 8 p.m. Sunday, Aug. 2. Conditions are expected to be dangerously hot, with high temperatures in the mid to upper 90s east of the 5 freeway. Heat relate

  18. NEW2 months ago
    Voice of OC: Orange County Mosquito Control Warns of West Nile Virus

    Orange County sign in Brea. " data-large-file="https://i0.wp.com/voiceofoc.org/wp-content/uploads/2021/08/OC_leopo.jpg?fit=771%2C434&ssl=1" /> West Nile Virus is spreading across Orange County as the season’s temperatures rise. Voice of OC is Orange County's nonprofit newsroom. We rely on donations

▸ SOURCES
10 links