Geyser, MT Hail Storm – July 2026

Geyser, MT experienced a late-afternoon storm on July 8, 2026 that produced stones up to 1.59 inches in diameter and prompted multiple NWS alerts. The event moved across the Geyser metro and nearby agricultural areas before concluding in the early evening.

What Happened

The storm evolved in the late afternoon and produced four separate NWS alerts covering multiple local zones. The alert sequence was as follows:

• July 8 · 5:08 PM MDT – dual-polarization radar detected 1.00-inch hail in the initial warning area.
• July 8 · 5:52 PM MDT – dual-polarization radar detected 1.00-inch hail in a secondary sector along the same track.
• July 8 · 5:55 PM MDT – NWS warning only reported 0.75-inch hail without radar confirmation in that polygon.
• July 8 · 7:45 PM MDT – dual-polarization radar detected 1.00-inch hail as the system exited the metro area.

Radar returns and hail detection points indicate the most intense returns tracked through the central Geyser metro, with a peak measured hail stone of 1.59 inches in the aggregate data set. The alert set includes both radar-detected hail reports and at least one NWS warning-only report. The storm is concluded.

Damage Assessment

Stones approaching 1.6 inches in diameter commonly dent vehicle body panels, crack skylights and glass, and abrade asphalt roof shingles. On agricultural land around Geyser, MT, hail of this size can bruise and strip foliage on small-grain crops and damage emerging broadleaf plants. Metal siding and unprotected solar panels are susceptible to impact marks at this diameter.

No spotter-verified damage reports were included with the alerts for this event. Where private inspections have been performed, document the location, time, and scale in your photos. Retain original images and timestamps for claims and contractor estimates.

What Contractors Should Know

Inspect roofs first for missing or fractured shingles, concentrated granule loss, and exposed underlayment. Use anchored ladders and fall protection; do not walk on wet or severely damaged roofs. For vehicles, document dents and glass breakage with close and wide shots, including a ruler or common object for scale. Log vehicle identification numbers and insurance claim references when present.

For agricultural customers, check for leaf shredding, stem bruising, and early fruit or seed damage in fields that lay within the radar-detected track. Prioritize tarping or boarding for localized structural breaches to prevent water intrusion. Provide clear, dated estimates and mark prioritized repairs to support rapid insurance processing.

Purchase the Strike Map to view the precise hail track and the damage zone for this event.