Fleming, CO Hail Storm – September 2026

A severe hail storm tracked through Fleming, CO late on September 5 into the early hours of September 6, producing a peak hail size of 2.72 inches and multiple radar-detected hail alerts over the Fleming metro.

What Happened

Radar and NWS alerts first flagged hail-producing cells in the Fleming area in the late afternoon. Dual-polarization radar issued hail detections beginning at 4:31 PM with increasing intensity through the evening. A 2.41-inch radar-detected return was logged at 4:46 PM, followed by a spotter-verified mPING submission at 5:02 PM reporting golf ball-sized hail (1.75 inches). Additional radar-detected pulses included a 2.13-inch return at 6:19 PM and a string of smaller radar detections and NWS warning-only alerts that continued into the night. The NWS issued 12 separate alerts tied to the storm between 4:31 PM on September 5 and 12:32 AM on September 6, indicating repeated hail-producing cells moved across the Fleming metro area.

Activity showed a late-afternoon intensification with multiple re-developing cells passing over the same corridor of town. Spotter-verified hail at 5:02 PM confirms at least one period of severe surface impacts during the storm's progression.

Damage Assessment

Field reports for this event are limited to the mPING submission of golf ball-sized hail at 5:02 PM near central Fleming. No NWS Local Storm Reports in the event log documented measured wind damage or structural collapse for addresses in the Fleming metro. Dual-polarization radar returned elevated hail signatures at several times after the spotter report, indicating the storm produced multiple rounds of heavy hail across the same urban footprint.

Radar persistence across the Fleming metro implies repeated strike exposure for parked vehicles, rooftop coverings, and exposed mechanical equipment in the path of the cells. Contractors inspecting properties in Fleming should expect evidence of impact concentrated along the storm track and at locations that experienced multiple cell passages between late afternoon and midnight. Use the time window from the late afternoon intensification through the midnight alerts to sequence impacts during inspections.

What Contractors Should Know

Start inspections using the radar and alert timeline: prioritize properties that align with the late-afternoon intensification and the 5:02 PM spotter report. Photograph roofing, siding, gutters, and HVAC equipment with timestamps and GPS coordinates. Focus roof-edge materials, ridge caps, and valley seams for bruising and granule loss. Note areas showing repeated impact patterns, such as clustered denting on metal flashings or multiple adjacent shingle bruises, which are consistent with several hail-producing passes.

For vehicle and equipment assessments, document dent size and distribution on a vehicle-by-vehicle basis. Use scale references in photos and include the 5:02 PM spotter time on documentation when possible. For older or weathered asphalt roofs, look for softening and embedded granules along the face of shingles rather than only missing pieces. Record any elevated moisture readings beneath suspect shingles and flag units with compromised sealing around penetrations.