Lamar, CO Hail Storm – September 2025

Lamar, Colorado, saw a concluded hail storm on September 7, 2025, with confirmed hail up to 2.5 inches. The event moved through the metro through late afternoon and early evening.

What Happened

The first hail alert came at 4:31 PM MDT, when dual-polarization radar indicated 2.5-inch hail. A second 2.5-inch alert followed at 5:12 PM MDT. Hail estimates then eased to 2 inches at 5:46 PM MDT.

A warning-only alert came at 5:57 PM MDT with 1-inch hail. Radar-based hail detection returned at 6:22 PM MDT with 1.75-inch hail, then 1-inch hail at 6:24 PM MDT. In total, six alerts were tied to this storm over a span of less than two hours.

The alert sequence shows a period of intense hail production, then a gradual reduction in hail size later in the evening. The storm has concluded.

Damage Assessment

Hail up to 2.5 inches is large enough to cause concentrated impact damage to roofs, gutters, skylights, and soft metals across exposed properties in Lamar. Vehicles parked outdoors during the core of the storm were also at risk for visible body damage and broken glass.

The range from 1 inch to 2.5 inches matters for field review. The larger stones are consistent with the most severe roof and siding strikes, while the later 1-inch and 1.75-inch alerts indicate continued hail exposure after the peak phase. Crews should expect damage to vary by roof age, slope, and construction type, even within the same storm path.

Commercial properties with flat roofs, HVAC units, and rooftop accessories may need closer review. South-facing slopes, parapet edges, and low spots around drains can show the first visible signs of impact and follow-on water intrusion.

What Contractors Should Know

This event deserves a focused canvass in the Lamar metro. Start with the structures most exposed during the late-afternoon hail core, then work outward to areas that stayed under the storm path during the 5:12 PM MDT to 6:24 PM MDT alert window. Watch for bruised shingles, granular loss, dented vents, cracked polymer components, and membrane punctures on flat roofs.

Use the hail range to sort roofs by likely claim density. Properties hit by 2.5-inch hail should move ahead of sites that likely saw only 1-inch to 1.75-inch hail. Field teams should document impact marks, soft-metal hits, and collateral damage on downspouts, window trim, condensers, and fence tops before weathering or cleanup reduces visibility.

Adjust inspection routes for mixed construction. Older asphalt roofs may show heavy granule loss and shingle fracture. Newer impact-resistant products may still show collateral damage on attachments and surrounding exterior surfaces. New vehicle lots, municipal buildings, retail centers, and agricultural outbuildings all warrant separate review because exposure and roof design differ across the same storm corridor.