Mill Creek, OK Hail Storm – March 2026

Mill Creek, OK saw a concluded hail event on March 6, 2026, with a maximum confirmed hail size of 1.5 inches. The storm produced repeated hail reports from mid-afternoon through the early hours of March 7.

What Happened

The first NWS alert in the storm sequence came at 2:59 PM CST with 1-inch hail in the warning area. Additional alerts followed at 3:16 PM, 3:38 PM, 4:05 PM, 4:09 PM, and 4:13 PM CST, with hail sizes ranging from 1 inch to 1.5 inches.

A spotter reported 1.5-inch hail at 4:12 PM CST. Dual-polarization radar later detected 1-inch hail at 4:18 PM CST and again at 4:33 PM CST. At 4:44 PM CST, radar and a spotter both supported a 1.25-inch hail report.

The alert sequence continued through late afternoon and evening. NWS-based alerts came in at 4:48 PM CST, 5:11 PM CST, 5:27 PM CST, 5:57 PM CST, and 6:26 PM CST. Another radar and spotter verified 1.25-inch report came in at 9:21 PM CST.

Overnight, dual-polarization radar continued to detect hail at 12:26 AM CST, 3:14 AM CST, and 3:50 AM CST, all at 1 inch. In total, 19 alerts were mapped to this storm across Mill Creek and the surrounding warning area.

Damage Assessment

Hail in the 1-inch to 1.5-inch range is large enough to damage softer roofing surfaces, vent covers, gutters, and exposed exterior trim. Vehicles parked outside during the peak of the storm may show dents, especially on hoods, roofs, and mirrors.

The 1.5-inch peak reported in Mill Creek is the upper end of the event. That size is consistent with broken or bruised landscaping, damaged screens, and impact marks on siding, window trim, and awnings. Smaller 1-inch reports still matter on roof inspections when they are repeated over several hours, since multiple hail passes can widen the affected area.

Field crews should expect mixed conditions across the storm path. Some properties will show direct impact marks, while nearby roofs may have only scattered bruising. The repeated reports from afternoon into overnight hours point to more than one hail core moving through the same general corridor.

What Contractors Should Know

Start with the roofs closest to the strongest reports. In this event, the 4:12 PM CST spotter report and the 4:44 PM CST radar and spotter verification sit near the center of the most intense hail period. Focus on impact testing, soft-metal components, roof penetrations, and accessory structures before moving to full-slope documentation.

Check secondary surfaces with the same attention as the roof system. Gutters, downspouts, skylight frames, porch coverings, fence caps, and HVAC tops can help separate isolated strikes from broader hail coverage. On longer-duration events like this one, late-night radar detections can point to additional hits outside the main afternoon window.

For canvass planning, organize addresses by proximity to the warning area and the time sequence of hail reports. The 1-inch detections at 5:11 PM CST, 5:27 PM CST, 5:57 PM CST, 6:26 PM CST, 12:26 AM CST, 3:14 AM CST, and 3:50 AM CST show the storm remained relevant well after sunset.