Colorado Hail Storm Report, June 21, 2026: Measured 2.75-Inch Hail in Northeast Logan County
August 16, 2026
By Red Hawk Roofing
On the evening of June 21, 2026, a trained spotter measured a 2.75 inch hailstone near St. Petersburg, a crossroads locality on the Logan-Phillips county line — one of the largest measured hailstones in Colorado all season. Five reports came in over one hour, in a tight cluster over farm country.
The northeast plains hail map — June 21, 2026
Every hail report from the evening of June 21
These are National Weather Service Local Storm Reports. Measured means an observer put a ruler or gauge on the stone; reported means a size category was selected. Times are MDT.
| Location | Size | Time | Source | Basis |
|---|---|---|---|---|
| 1 S St Petersburg | 2.75" | 7:46 PM | Trained Spotter | measured |
| 1 SW St Petersburg | 2.75" | 7:43 PM | Trained Spotter | reported |
| 3 ENE Highland Center | 2.00" | 8:35 PM | Storm Chaser | measured |
| 4 SE Reiradon Hill | 1.75" | 7:30 PM | Trained Spotter | measured |
| 5 SSE Reiradon Hill | 1.00" | 7:30 PM | Trained Spotter | reported |
The storm was warned before it produced: a severe thunderstorm warning at 7:13 PM gave 17 minutes of lead before the first 7:30 PM report, and a second warning at 7:44 PM covered the 2.75 inch stones at St. Petersburg. Radar agreed on location — the report area sits inside the radar-estimated 1.75 inch contour — but the measured 2.75 inch stone ran above what radar estimated there, one more case of ground truth out-running the algorithm.
Farmstead or equipment under this one? We'll come look, free.
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Why a measured 2.75-inch stone matters
Published impact studies put the onset of functional damage near 1.00 inch for three-tab shingles, 1.25 inches for architectural shingles, and 2.00 inches for Class 4 impact-rated products. A measured 2.75 inch stone is past the threshold for every asphalt product made, and stones in this class dent metal roofing and grain bins and break skylights and equipment glass. Hail bruising on shingles works to the surface over the following months — a roof or outbuilding hit in June can look fine all summer and start leaking by winter.
Frequently asked questions
Was there hail in Logan County on June 21, 2026?
Yes. A trained spotter measured a 2.75 inch hailstone one mile south of St. Petersburg — a rural crossroads locality in northeast Logan County — at 7:46 PM MDT, with a matching 2.75 inch report three minutes earlier a mile southwest. It is one of the largest measured hailstones in Colorado in 2026.
How big was the June 21, 2026 hail and where did it fall?
Five reports in a tight one-hour cluster along the Logan-Phillips county line: measured stones of 2.75 inches near St. Petersburg, 2.00 inches near Highland Center in Phillips County at 8:35 PM, and 1.75 inches near Reiradon Hill at 7:30 PM. This was a compact evening event, not a broad outbreak.
Was a warning issued for this storm?
Yes. A severe thunderstorm warning was issued at 7:13 PM — 17 minutes before the first report — and a second at 7:44 PM covered the 2.75 inch reports at St. Petersburg.
What kind of property was exposed?
St. Petersburg is a church-and-cemetery crossroads; the nearest towns are Fleming, about nine miles away, and Haxtun. The exposure is farmsteads, outbuildings, grain storage and equipment. A 2.75 inch stone is past the damage threshold for every asphalt shingle class, and it dents metal roofing and machinery.
Could hail have fallen beyond the five reports?
Yes. The radar-estimated 1.75 inch swath extends beyond the report cluster into unpopulated rangeland, and a report only exists where someone found the stones. The absence of further reports is not evidence that hail did not fall there.
Red Hawk tracks every significant hail day across Colorado. See the 2026 season archive for every covered event. Before any adjuster visit, read what hail damage actually looks like on a roof and the Colorado hail claim guide, or see our hail damage service for what an inspection covers.
Red Hawk works Colorado roofs year round. We'll still be here next season.
Schedule My Free Inspectionor call (720) 771-8921
Storm figures are National Weather Service Local Storm Reports for the evening of June 21, 2026 (local time), retrieved from the Iowa Environmental Mesonet archive and de-duplicated; warning times are from the NWS watch/warning archive. Times are MDT and reports are grouped by the local calendar day. Radar swath analysis by ExoVzn, an independent forensic meteorology firm, using NOAA MRMS data. Radar figures are estimates. Storm reports indicate where hail occurred; only a physical inspection establishes whether a specific roof or structure was damaged.