Marlow, OK Hail Storm – May 2025

What Happened

A severe hail storm crossed the Marlow, OK area on May 22, 2025, with verified stones up to 2.75 inches and repeated hail detections through the day. The storm began producing spotter-verified hail in the morning, then redeveloped with larger stones in the afternoon and early evening.

The first ground report came at 8:46 AM CDT, when a spotter reported 1.5-inch hail through mPING. By 10:38 AM CDT, another spotter report placed 1.75-inch hail in the same broad storm cycle. NWS alert confidence was already high in the morning, with radar and spotter verification tied to 1.75-inch hail at 8:19 AM CDT, 1-inch hail at 8:45 AM CDT, and 1.5-inch hail at 8:55 AM CDT. Additional alerts followed through late morning, including 1.25-inch hail at 9:23 AM CDT and repeated 1-inch to 1.5-inch detections through noon.

By early afternoon, the storm held together across multiple cycles. Alerts at 2:08 PM CDT, 2:34 PM CDT, 2:39 PM CDT, and 2:51 PM CDT all carried dual-polarization radar confidence for 1-inch hail. The hail core intensified again around 3 PM, when a 2.5-inch detection was mapped at 3:09 PM CDT. A spotter-verified 2.5-inch report followed at 3:22 PM CDT. Radar then repeated 2.5-inch detections at 3:47 PM CDT and 3:52 PM CDT, with a 1-inch radar-derived alert in between at 3:49 PM CDT.

Late afternoon brought the most significant hail. A spotter-verified report at 4:20 PM CDT measured 2.5-inch hail. At 4:27 PM CDT, two spotter-verified reports placed hail at 3.75 inches. Radar and spotter confirmation remained active through the evening, with a 2.75-inch report at 5:05 PM CDT, followed by more 1.5-inch to 2.5-inch detections into the 7 PM hour. The final alert came at 7:41 PM CDT with 1-inch hail.

Damage Assessment

The field reports show a hail event with multiple large-stone pulses rather than a single brief burst. The damage picture is driven by several spotter-verified reports in the 2.5-inch to 3.75-inch range, with the largest stones reported at 4:27 PM CDT. Earlier reports of 1.5 inches and 1.75 inches point to an expanding hail core that reached damaging size well before the late-afternoon peak.

The most credible surface impacts came from the 4:20 PM CDT and 4:27 PM CDT reports. Both were spotter verified. Both were tied to estimated timing from radar. That places the largest hail in the late-afternoon storm segment rather than the morning round. The 2.5-inch report at 4:20 PM CDT and the pair of 3.75-inch reports at 4:27 PM CDT are the clearest indicators of concentrated impact on exposed vehicles, roofs, and other vulnerable surfaces in the Marlow area.

The storm did not fade after that peak. Hail remained large enough for repeated 2.5-inch, 1.75-inch, and 1.5-inch detections through the next several hours. A 2.75-inch spotter-verified report at 5:05 PM CDT confirms another strong pulse after the initial damage window. For contractors, that means the hail load likely varied across neighborhoods and along the storm path, with some roofs taking multiple strikes from separate hail cores.

Marlow, OK Hail Storm – May 2025

NWS WARNING AREAS · 89

What Happened

Damage Assessment

Storm Details

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