Hail in Jefferson · Apr 15, 2026
The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Jefferson that day. Open it on the live map to see the swath over the streets.
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Convective day · Apr 15, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Jefferson 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
- 25 /100
- Homes exposed
- 53 /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 Jefferson 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.
Estimated size field 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.
Only the radar-estimated size surface resolved for Apr 15, 2026 — this storm produced no NEXRAD point detections over Jefferson, so there is one map to show, not two.
The storm in context
Where Apr 15, 2026 sits in Jefferson's hail record.
This was Jefferson's 2nd recorded hail day, arriving 41 days after the Mar 5, 2026 storm. By severity it ranks 3rd of the 8 storms we have logged here. Radar put the day's largest stone over Jefferson at 1" — radar-estimated size aloft.
The Apr 15, 2026 convective day was bigger than Jefferson: the same system put hail over 425 other tracked cities, 127 of them in Iowa. Nearest: Scranton (6 miles northwest, up to 1.5"); Perry (15 miles southeast, up to 0.5"); Coon Rapids (16 miles west, up to 0.75").
These maps are stills. In the app this date is one of 8 Jefferson 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.
The National Weather Service logged no spotter reports for this storm over Jefferson. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Damage-capable hail signal
What 1" hail means for Jefferson roofs.
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$5.3M
Potential roof exposure — 441 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 2 jobs
- Illustrative work
- ~$30K
Close just 0.5% of the 441 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
April 2028
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.
Names and phones for every home in the footprint: at most $93 on top of the $150 plan.
Jefferson hail history
Other storms in Jefferson.
Estimated-size surface Jul 20, 2026
0.5"
Estimated-size surface Jul 3, 2026
1"
Estimated-size surface Jun 28, 2026
1.25"
Estimated-size surface Jun 1, 2026
2"
Estimated-size surface May 15, 2026
0.5"
Estimated-size surface Apr 23, 2026
1.5"
Estimated-size surface Mar 5, 2026
1"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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