Haswell, CO Hail Storm – August 2026

Haswell, CO, August 13, 2026 — A severe thunderstorm is tracking through the Haswell metro area and is producing hail up to 2.11" in diameter while generating multiple NWS warning-area alerts.

What Happened

The storm entered the Haswell NWS warning area in the late afternoon and is continuing to produce hail. Alerts and detections span from mid-afternoon into the early evening. Key alerts and detections include:

• August 13 · 4:30 PM MDT (22:30 UTC) – dual-polarization NEXRAD hail detection indicated 1.55" within the warning area.
• August 13 · 4:54 PM MDT (22:54 UTC) – dual-polarization NEXRAD hail detection indicated 2.00" within the warning area.
• August 13 · 5:41 PM MDT (23:41 UTC) – NWS warning-only report noted 0.88" hail in the warning area.
• August 13 · 6:14 PM MDT (00:14 UTC) – NWS warning-only report noted 1.00" hail in the warning area.
• August 13 · 7:01 PM MDT (01:01 UTC) – dual-polarization NEXRAD hail detection indicated 1.33" within the warning area.
• August 13 · 7:57 PM MDT (01:57 UTC) – NWS warning-only report noted 0.88" hail in the warning area.

Multiple detections were radar-detected by dual-polarization NEXRAD. Several alerts consisted of NWS warning-only entries where radar evidence was not present in the posted alert. The storm is active and continuing to move through the Haswell warning area as of the latest alerts.

Damage Assessment

Observed hail sizes in the Haswell warning area range from 0.88" to 2.11". Hail in the lower end of that range commonly causes cosmetic damage to vegetation and minor dents on unprotected metal surfaces. Hail above roughly 1.5" increases the likelihood of denting to vehicle body panels, damage to vinyl and aluminum siding, and granular loss on asphalt roof shingles in impacted portions of the Haswell warning area.

At the upper reported sizes present during this event, expect localized shingle fracture on older or weakened roofing, cracked exterior fixtures such as skylights, and larger dents on vehicles parked in the open. Agricultural surfaces and exposed equipment in the Haswell warning area are at elevated risk for crop and surface damage where hail accumulation occurred.

What Contractors Should Know

Safety and access come first. Do not begin rooftop work while the storm is active. Confirm the storm has moved out of the Haswell warning area and wait for official clearance from local authorities. Document conditions immediately after the storm with time-stamped, geotagged photos. Prioritize tarping where water intrusion is visible or likely. Record hail sizes at representative points and sample any cracked or displaced shingles for claims documentation.

Estimate repairs based on observed coverage rather than a single maximum size. Small, isolated pits on shingles may allow single-roofing repairs. Widespread shingle granule loss or fractured shingles across multiple roof planes may justify full replacement. Inspect vehicles for dent patterns and document alignment with detected hail swath locations within the Haswell warning area. For precise hail track data and point-level mapping for inspections and claims, consult the Strike Map product.