Mount Ayr, IA Hail Storm – September 2026

Mount Ayr, Iowa experienced a multi-zone hail-producing storm on September 19, 2026, with peak stones measured at 1.04 inches. The event passed through the area in the early evening and generated a sequence of NWS warnings.

What Happened

The storm moved through the Mount Ayr area in the early evening on September 19, 2026. The NWS issued four severe thunderstorm warnings tied to the same storm cell cluster:

• September 19 · 6:52 PM CDT (23:52 UTC) – 0.88" hail – NWS warning only
• September 19 · 7:23 PM CDT (00:23 UTC) – 0.88" hail – NWS warning only
• September 19 · 7:30 PM CDT (00:30 UTC) – 0.88" hail – NWS warning only
• September 19 · 7:45 PM CDT (00:45 UTC) – 0.88" hail – NWS warning only

NEXRAD and dual-polarization radar indicated hail-bearing cores as the alerts progressed. The warning sequence remained in the NWS warning-only category, with no spotter-verified hail reports tied directly to the warning messages in the public alert feed. The storm concluded in the area after the 7:45 PM warning window.

Damage Assessment

Hail in the coin-sized range can produce cosmetic and functional damage to common materials. Expect dents and paint damage on exposed vehicle panels. Aluminum and vinyl siding may show denting. Older asphalt shingles can sustain granule loss and localized cracking. Vegetation can exhibit leaf shredding and defoliation on exposed branches.

Glass breakage is uncommon at these sizes but not impossible where stones strike at high speed or where glass is already compromised. Soft materials such as outdoor furniture cushions and screens can incur tears. Immediate visible damage will often be superficial, but cumulative impacts to roofing or paint can accelerate wear and lead to interior leaks if not addressed.

What Contractors Should Know

Begin with a safety-focused site walk. Verify structural stability and watch for loose debris and wet, slippery surfaces. Photograph damage with a ruler or other scale, capture timestamps, and note exact addresses. Prioritize temporary water protection for roofs showing granule loss or exposed underlayment. Tarp installations should follow standard attachment protocols to avoid further wind uplift.

Provide concise documentation for claims: itemized photos, descriptions of observed material failures, and time-stamped location notes. Vehicle clients should be advised to document dents and submit images to insurers promptly. Coordinate with property owners before any invasive inspection. Consider scheduling follow-up inspections to monitor any developing leaks or substrate degradation.

For clients requiring a radar-confirmed hail footprint, refer to the paid Strike Map for the radar-derived hail swath and the damage zone mapping.