Hail in Saint Charles May 17, 2026
Both radar surfaces caught this storm: NEXRAD logged 0 hail signatures up to 0", and the radar-estimated size reached 0.5" aloft.
0.5"
≈ pea to penny · radar-estimated size aloft0
0
none filedThe 6th most severe storm Saint Charles has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 13 /100
- Homes exposed
- 0 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Saint Charles saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Where May 17, 2026 sits in Saint Charles's hail record
This was Saint Charles's 3rd recorded hail day, arriving 30 days after the Apr 17, 2026 storm. By severity it ranks 6th of the 6 storms we have logged here. Radar put the day's largest stone over Saint Charles at 0.5" — radar-estimated size aloft.
The May 17, 2026 convective day was bigger than Saint Charles: the same system put hail over 894 other tracked cities, 91 of them in Minnesota. Nearest: Utica (6 miles southeast, up to 0.5"); Altura (7 miles north, up to 0"); Minnesota City (12 miles northeast, up to 1").
These maps are stills from Saint Charles's May 17, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
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.
For this storm over Saint Charles, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
What 0.5" hail means for Saint Charles roofs
Hail under three-quarters of an inch stays below the National Weather Service severe threshold and rarely breaks shingles outright. But repeated small-hail events accelerate granule loss and shorten roof life — on older roofs, it's still worth a conversation.
Track hail over Saint Charles on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Saint Charles storm history — this May 17, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
6 recorded storm days in Saint Charles, MN
Other storms in Saint Charles
Jul 1, 2026
1.75"
Jun 30, 2026
1"
Jun 10, 2026
0.5"
Apr 17, 2026
2"
Mar 30, 2026
1"