Hail in Saint Francis · Aug 17, 2026
The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Saint Francis that day. At 2" — tennis ball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Convective day · Aug 17, 2026 · noon–noon UTC
Severity
The 4th most severe storm Saint Francis has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 50 /100
- Homes exposed
- 41 /100
- Ground truth
- 0 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Saint Francis saw the hail — from two instruments
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Only the radar-estimated size surface resolved for Aug 17, 2026 — this storm produced no NEXRAD point detections over Saint Francis, so there is one map to show, not two.
The storm in context
Where Aug 17, 2026 sits in Saint Francis's hail record.
This was Saint Francis's 12th recorded hail day, arriving 1 day after the Aug 16, 2026 storm. By severity it ranks 4th of the 14 storms we have logged here. Radar put the day's largest stone over Saint Francis at 2" — radar-estimated size aloft.
The Aug 17, 2026 convective day was bigger than Saint Francis: the same system put hail over 428 other tracked cities, 29 of them in South Dakota. Nearest: Tuthill (10 miles southwest, up to 2.25"); Kilgore (13 miles southeast, up to 2"); Crookston (19 miles southeast, up to 1.5").
These maps are stills. In the app this date is one of 14 Saint Francis storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
No ground reports were filed with the National Weather Service for this storm over Saint Francis. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Severe hail signal
What 2" hail means for Saint Francis roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$1.3M
Potential roof exposure — 110 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 110 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
August 2028
Claims from this storm can typically be filed until around August 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $23 on top of the $150 plan.
Saint Francis hail history
Other storms in Saint Francis.
Estimated-size surface Aug 27, 2026
2"
Estimated-size surface Aug 21, 2026
0.5"
Estimated-size surface Aug 16, 2026
1.25"
Estimated-size surface Aug 11, 2026
1.75"
Estimated-size surface Aug 8, 2026
1.25"
Estimated-size surface Jul 30, 2026
2.5"
Estimated-size surface Jul 29, 2026
0.75"
Estimated-size surface Jul 27, 2026
1.25"
Estimated-size surface Jul 9, 2026
3.25"
Estimated-size surface Jul 6, 2026
1.75"
Estimated-size surface Jun 27, 2026
1.75"
Estimated-size surface Jun 4, 2026
1.75"
Estimated-size surface Apr 22, 2026
1"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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