Essex, CA Hail Storm – September 2026

Essex, CA experienced a short-lived but organized hail-producing storm on September 28, 2026, with a maximum confirmed hail size of 1.16 inches. The event moved across metro Essex in a late-afternoon into early-evening window and is now concluded.

What Happened

A multi-zone aggregate storm produced two separate NWS warnings for damaging hail. The first NWS warning issued at 1:29 PM PDT reported 1.00-inch hail. The second NWS warning issued at 5:17 PM PDT also reported 1.00-inch hail. Warnings covered portions of the Essex metro corridor and adjacent suburban areas. Radar-track data showed a concentrated north‑northeast motion for the primary storm cells. The event was categorized in warning products as NWS warning only; there were no spotter-verified large-size reports embedded in the alert stream for this event. The storm window was brief at any single location. Most areas experienced hail for only a few minutes as the cells translated through the metro.

Damage Assessment

Hail reaching the reported maximum is in the range capable of producing vehicle dents and superficial damage to residential roofing. Asphalt shingle granule loss is likely where exposure to hail was sustained for multiple minutes. Vinyl siding can show dents and abrasion at this size. Skylights, solar panels, and unprotected glass are at increased risk of pitting and cosmetic damage but widespread structural failures are less likely at these dimensions. For properties in the direct path of the cells, check vehicle panels, roof shingles, gutters, and window seals for impact marks and granule accumulation in gutters or downspouts. Document all observable damage with geotagged photos and local timestamps.

What Contractors Should Know

Prioritize roof inspections in neighborhoods that lay directly along the storm track and in areas that reported prolonged cell passage. Start with accessible visual checks for missing granules, bruised shingles, and loosened flashing. For vehicle fleets and exterior equipment, inspect painted surfaces and exposed conduits for dents and chipping. Triage work by severity: secure any punctures or compromised waterproofing before cosmetic repairs to limit secondary water intrusion.

Estimate repair scope from visible roof damage and photographed evidence. Temporary tarping is appropriate only where shingles are clearly breached or decking is exposed. For insurance assessments, provide dated documentation and measurements—photographs next to a common object, roof slope notes, and approximate exposed area. Coordinate scheduling to avoid duplicate roof lifts and to align material deliveries with confirmed damage zones.

For radar-confirmed hail swath and the paid damage zone, consult the Strike Map for the detailed radar-derived hail footprint covering Essex, CA.