Wind gust 60 mph
4 S Bremen Marshall County
“50-60 mph winds. (TOP)”
— NOAA / SPC storm report
/ Storm field report · Marshall
Hail in Waterville · May 17, 2026
NEXRAD logged 1 hail signature up to 1.75"; the estimated-size surface reached 1" aloft. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · the largest NEXRAD radar signature
Homes in the hail footprint 9
Ground reports 1 1 wind
Radar surfaces 2 NEXRAD + estimated size
Convective day · May 17, 2026 · noon–noon UTC
Severity
The 5th most severe storm Waterville has seen in the last 12 months
Composite score · 3.4 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.4 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 20 /100
- Ground truth
- 17 /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 Waterville saw the hail — from two instruments
May 17, 2026 · Waterville, KS
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
NEXRAD radar signatures Surface resolved
Radar signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
Max size
1.75"
Detections
1
Radar-estimated hail size Surface resolved
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
1"
The storm in context
Where May 17, 2026 sits in Waterville's hail record.
This was Waterville's 4th recorded hail day, arriving 1 day after the May 16, 2026 storm. By severity it ranks 5th of the 14 storms we have logged here. Radar put the day's largest stone over Waterville at 1.75" — the largest NEXRAD radar signature.
The May 17, 2026 convective day was bigger than Waterville: the same system put hail over 894 other tracked cities, 134 of them in Kansas. Nearest: Barnes (11 miles southwest, up to 1.75"); Blue Rapids (11 miles southeast, up to 1"); Marysville (15 miles north, up to 2.5").
These maps are stills. In the app this date is one of 14 Waterville 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
1 report filed with the NWS
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.
Wind reports
1 reportStorm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Bremen — beyond Waterville itself.
High damage potential
What 1.75" hail means for Waterville roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
9 homes × $12,000 avg. claim
Potential roof exposure
$108K
Potential roof exposure — 9 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
May 2028
Claims from this storm can typically be filed until around May 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 $2 on top of the $150 plan.
Waterville hail history
Other storms in Waterville.
14 recorded storm days in Waterville, KS
Estimated-size surface Storm date Waterville / KS
Sep 12, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Sep 11, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Aug 18, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Aug 15, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Aug 6, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Jul 8, 2026
1.75" Signatures 1.75" Estimated 0.75"
1 ground report Open report →
Estimated-size surface Storm date Waterville / KS
Jul 3, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Jun 13, 2026
2.5" Estimated 2.5"
3 ground reports Open report →
Estimated-size surface Storm date Waterville / KS
Jun 4, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
May 18, 2026
2.5" Signatures 2.5" Estimated 1.5"
2 ground reports Open report →
Estimated-size surface Storm date Waterville / KS
May 16, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Apr 9, 2026
2.5" Signatures 2.5" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Waterville / KS
Mar 5, 2026
1" Signatures 1"
No ground reports filed Open report →
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A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Sep 13, 2026.