Hail size 2.5"
Millston Jackson County
“Corrects previous hail report from Millston. Photo provided via social media. Corrected for time of hailfall. (ARX)”
— NOAA / SPC storm report
Hail in Black River Falls Apr 14, 2026
The radar-estimated size surface caught this storm, reaching 2" aloft. NEXRAD logged no point detections over Black River Falls this day. At 2" — tennis ball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
Largest hailstone
2"
≈ tennis ball · radar-estimated size aloft Homes in the hail footprint
2,019
Ground reports
2
2 hailThe 2nd most severe storm Black River Falls 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.
5.2 /10
- Hail size
- 50 /100
- Homes exposed
- 66 /100
- Ground truth
- 33 /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 Black River Falls 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
2"
Only the radar-estimated size surface resolved for Apr 14, 2026 — this storm produced no NEXRAD point detections over Black River Falls, so there is one map to show, not two.
Where Apr 14, 2026 sits in Black River Falls's hail record
This was Black River Falls's 3rd recorded hail day, arriving 1 day after the Apr 13, 2026 storm. By severity it ranks 2nd of the 11 storms we have logged here. Radar put the day's largest stone over Black River Falls at 2" — radar-estimated size aloft.
The Apr 14, 2026 convective day was bigger than Black River Falls: the same system put hail over 476 other tracked cities, 94 of them in Wisconsin. Nearest: Melrose (14 miles southwest, up to 1"); Warrens (24 miles southeast, up to 1"); Pittsville (25 miles east, up to 1").
These maps are stills from Black River Falls'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
2 reports Hail size 2.5"
Millston Jackson County
“Photo provided via social media. (ARX)”
— 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 20 minutes, from to .
Reports came from Millston — beyond Black River Falls itself.
What 2" hail means for Black River Falls roofs
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
What this storm is worth to a roofer
$24M
Potential roof exposure — 2,019 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
10 jobs
Illustrative work
~$150K
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 Black River Falls on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Black River Falls 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
Black River Falls hail history
← All hail in Black River Falls 11 recorded storm days in Black River Falls, WI
Other storms in Black River Falls
Jul 1, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jun 30, 2026
1.75" Signatures 1.75" Estimated 0.75"
No ground reports filed 
Jun 10, 2026
0.5" Estimated 0.5"
No ground reports filed 
Jun 9, 2026
1" Estimated 1"
No ground reports filed 
May 27, 2026
1" Signatures 1" Estimated 0.5"
2
ground reports 
May 18, 2026
0.75" Signatures 0.75" Estimated 0.5"
No ground reports filed 
May 17, 2026
1.75" Signatures 1.75" Estimated 0.5"
No ground reports filed 
Apr 17, 2026
3" Signatures 3" Estimated 1.25"
2
ground reports 
Apr 13, 2026
1.75" Signatures 1.75" Estimated 1.25"
1
ground report 
Mar 30, 2026
1.75" Signatures 1.75" Estimated 0.75"
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.