The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Spring Hill that day. Open it on the live map to see the swath over the streets.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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Convective day · Apr 13, 2026 · noon–noon UTC
Severity
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
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
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 13, 2026 — this storm produced no NEXRAD point detections over Spring Hill, so there is one map to show, not two.
The storm in context
This was Spring Hill's 2nd recorded hail day, arriving 34 days after the Mar 10, 2026 storm. By severity it ranks 1st of the 7 storms we have logged here. Radar put the day's largest stone over Spring Hill at 1" — radar-estimated size aloft.
The Apr 13, 2026 convective day was bigger than Spring Hill: the same system put hail over 467 other tracked cities, 32 of them in Kansas. Nearest: Bucyrus (8 miles east, up to 0.75"); Edgerton (8 miles west, up to 1"); Wellsville (15 miles northwest, up to 1.25").
These maps are stills. In the app this date is one of 7 Spring Hill 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
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.
“*** 1 INJ *** Report resent for starting point and time of tornado. Shortly before 820 PM CDT on Monday April 13th... 2026... a supercell thunderstorm... that had previ (EAX)”
— NOAA / SPC storm report
“Photo shared of a tornado on the ground... looking northwest at the storm by a spotter. (EAX)”
— NOAA / SPC storm report
“*** 1 INJ *** Shortly before 820 PM CDT on Monday April 13th... 2026... a supercell thunderstorm... that had previously resulted in an EF- 2 tornado in Ottawa... KS... (EAX)”
— NOAA / SPC storm report
“Social media photo shows a tornado on the ground... location is approximately SW of Spring Hill. (EAX)”
— NOAA / SPC storm report
“Measured from mounted vehicle anemometer. Social media reports confirm damage in the area... with multiple trees downed... roof damage to a property... and fence damage (EAX)”
— NOAA / SPC storm report
“Private weather sensor. (EAX)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Hail was reported over 28 minutes, from to .
Reports came from Chiles and Hillsdale — beyond Spring Hill itself.
Damage-capable hail signal
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
Potential roof exposure
$64M
Potential roof exposure — 5,317 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 5,317 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 $1,117 on top of the $150 plan.
Spring Hill hail history
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Estimated-size surface Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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