Alamo, ND Hail Storm – June 2026

A severe hail storm tracked through the Alamo, ND area on June 9, 2026, producing peak 3-inch stones and a concentrated hail track across Williams County. The event combined NWS warning-only alerts and multiple dual-polarization radar hail detections during the early evening.

What Happened

The event began in the late afternoon with an NWS severe thunderstorm warning issued at 4:44 PM CDT for 1.75-inch hail (warning-only). Warnings and radar detections continued into the early evening. Dual-polarization radar flagged hail signatures at 6:35 PM CDT, 7:03 PM CDT, 7:42 PM CDT and 7:46 PM CDT, with one radar-derived signature indicating larger stones near the same corridor where spotters reported severe hail.

Williams County emergency management reported quarter-inch hail at 6:03 PM CDT. Spotters described mostly smaller hail but noted some as large as golf balls at 6:36 PM CDT. Two separate 2-inch reports near Alamo were logged by county emergency management at 6:45 PM CDT. An emergency manager in Fortuna reported 3 inch hail at 6:40 PM CDT.

NWS warning-only alerts were mixed with radar-detected hail reports throughout the sequence. The pattern shows an initial warning stage in late afternoon, followed by a radar-detected intensification through early evening that tracked east-northeast across Fortuna and the Alamo vicinity.

Damage Assessment

Field reports and radar signatures indicate concentrated large-hail impacts in and immediately east of Fortuna and in the near-Alamo corridor of Williams County between roughly 6:00 PM and 7:50 PM CDT. Williams County emergency management logged multiple 2-inch reports near Alamo at 6:45 PM CDT and earlier small-hail reports at 6:03 PM CDT. Local spotters described occasional golf-ball-size stones at 6:36 PM CDT. Those same areas coincided with strong dual-polarization radar returns later in the sequence.

Local storm reports did not include a widespread catalog of structural damage in the available records, but the spotter pattern and radar swath point to concentrated surface impacts on vehicles, exposed outdoor property, and roofing within the Fortuna–Alamo corridor. Field crews arriving for initial assessment should expect isolated, high-severity impacts where spotter reports clustered and along the radar-detected hail track, and more scattered minor impacts outside that corridor.

What Contractors Should Know

Prioritize inspections in Fortuna and the near-Alamo reporting corridor where spotters logged the largest stones and where radar-detected signatures were strongest. Start with vehicle parks, commercial metal roofs, and south- and west-facing roof slopes first. Use a two-pass approach: a cursory exterior walk for obvious dents, broken glass, and displaced siding, followed by a thorough roof-level assessment when safe.

Document all findings with GPS-tagged photos and time-stamped notes that reference local spotter times (example: 6:40 PM CDT Fortuna report, 6:45 PM CDT Alamo reports). For roofing, look for hail impact bruises, loosened granules along shingle heads, split lap edges, and dents in metal flashings. For vehicles, prioritize hail dents larger than a half-inch and any cracked glass. Record exact locations and concentrations to match to the radar-detected hail track for claims and repair planning.