Hail size 1"
1 NW Watertown Dodge County
“Verified via photo with coins from social media. (MKX)”
— NOAA / SPC storm report
Hail in Watertown Apr 14, 2026
The radar-estimated size surface caught this storm, reaching 1.75" aloft. NEXRAD logged no point detections over Watertown this day.
Largest hailstone
1.75"
≈ golf ball · radar-estimated size aloft Homes in the hail footprint
18,416
Ground reports
7
7 hailThe most severe storm Watertown has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.3 /10
- Hail size
- 44 /100
- Homes exposed
- 85 /100
- Ground truth
- 100 /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 Watertown 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.
Radar-estimated hail size
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.
Max size
1.75"
Only the radar-estimated size surface resolved for Apr 14, 2026 — this storm produced no NEXRAD point detections over Watertown, so there is one map to show, not two.
Where Apr 14, 2026 sits in Watertown's hail record
This was Watertown's 2nd recorded hail day, arriving 14 days after the Mar 31, 2026 storm. By severity it ranks 1st of the 7 storms we have logged here. Radar put the day's largest stone over Watertown at 1.75" — radar-estimated size aloft.
The Apr 14, 2026 convective day was bigger than Watertown: the same system put hail over 476 other tracked cities, 94 of them in Wisconsin. Nearest: Johnson Creek (9 miles southwest, up to 1.75"); Waterloo (10 miles west, up to 2.25"); Oconomowoc (11 miles east, up to 1.75").
These maps are stills from Watertown's Apr 14, 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.
Hail reports
7 reports Hail size 1"
Watertown Jefferson County
“Report from mPING: Quarter (1.00 in.). (MKX)”
— NOAA / SPC storm report
Hail size 1.25"
Watertown Jefferson County
“Photo from social media with a quarter for comparison. (MKX)”
— NOAA / SPC storm report
Hail size 1"
1 N Watertown Dodge County
“Report from mPING: Quarter (1.00 in.). (MKX)”
— NOAA / SPC storm report
Hail size 1.75"
Watertown Jefferson County
“(MKX)”
— NOAA / SPC storm report
Hail size 1.75"
4 S Watertown Jefferson County
“Report from mPING: Golf Ball (1.75 in.). (MKX)”
— NOAA / SPC storm report
Hail size 2.75"
2 SE Watertown Jefferson County
“(MKX)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Hail was reported over 32 minutes, from to .
What 1.75" hail means for Watertown roofs
At an inch and a half, hail cracks shingles, strips granules down to the mat, and dents gutters, vents, and siding. A footprint like this typically produces a wave of insurance claims — and the contractor who reaches the homeowner first usually gets the inspection.
What this storm is worth to a roofer
$221M
Potential roof exposure — 18,416 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
92 jobs
Illustrative work
~$1.4M
Claims from this storm can typically be filed until around April 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Track hail over Watertown on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Watertown storm history — this Apr 14, 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
Watertown hail history
← All hail in Watertown 7 recorded storm days in Watertown, WI
Other storms in Watertown
Jul 27, 2026
1.75" Estimated 1.75"
1
ground report 
Jul 2, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed 
May 17, 2026
0.5" Signatures 0.5"
No ground reports filed 
May 15, 2026
1" Signatures 1"
No ground reports filed 
Apr 17, 2026
1.5" Signatures 1.5" Estimated 0.75"
1
ground report 
Mar 31, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed
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 surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.