Toston, MT Hail Storm – June 2025

What Happened

A severe hail storm moved through Toston, Montana, on June 13, 2025, producing hail as large as 1.25 inches during a series of afternoon alerts. The storm first produced pea-size hail around 1:07 PM MDT, then shifted into repeated hail cores through late afternoon.

The earliest ground report came from a spotter who reported pea-size hail at 1:07 PM MDT. A warning followed at 1:16 PM MDT with 1-inch hail estimated from radar and spotter verification. Another alert at 1:39 PM MDT again called for 1-inch hail based on dual-polarization radar. By mid-afternoon, the storm strengthened. At 3:29 PM MDT, radar data supported a 1.25-inch hail alert. Additional alerts at 3:40 PM, 4:07 PM, 4:14 PM, and 4:20 PM MDT each carried 1-inch hail estimates from dual-polarization radar.

The storm remained active across several hours rather than as a brief pulse. That pattern produced a longer hail threat across the Toston area, with the strongest radar signal occurring around 3:29 PM MDT and the verified surface hail already established earlier in the day.

Damage Assessment

Ground reports showed measurable surface impact before the larger radar estimates arrived. The 1:07 PM MDT spotter report of pea-size hail confirms early hail reaching the ground in the Toston area. Later radar-based alerts show the storm maintaining a hail-producing core well into the afternoon, with one alert reaching 1.25 inches and several others holding at 1 inch.

No large damage reports were included in the field data for this event, but the hail sequence supports a mixed impact profile across the warning area. Early small hail likely affected exposed surfaces first, followed by larger stones later in the day. The repeated alerts point to more than one hail burst moving through the same general corridor.

For property owners, that means roof, siding, and vehicle checks should focus on the full afternoon window, not only the peak-size alert. In storms like this, the first report and the later radar peak can mark different parts of the same event, and both matter when looking for fresh impact.

What Contractors Should Know

Toston sits in a smaller rural market, so a storm with multiple hail alerts can create uneven demand patterns. Some properties will show only light pitting from the early hail. Others may show more visible impact from the later 1-inch to 1.25-inch hail sequence. A door-to-door route should follow the full alert window from 1:07 PM MDT through 4:20 PM MDT, since the storm stayed active across much of the afternoon.

The ground truth in this case starts with the early spotter report and then transitions to radar-supported hail estimates. That gives contractors a practical field timeline. Start with the areas most exposed to the initial hail around early afternoon, then expand to the later hail track as the storm intensified near mid-afternoon. Roof slopes, gutters, and north- and west-facing elevations should get the first pass.

Toston, MT Hail Storm – June 2025

NWS WARNING AREAS · 46

What Happened

Damage Assessment

What Contractors Should Know

Storm Details

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