Tornado Rating unknown
2 SE Brems Starke County
“Barn debris found on route 8 northwest of Knox. Location relayed by storm chaser. Time estimated via radar. Delayed report. (IWX)”
— NOAA / SPC storm report
/ Storm field report · Starke
Hail in Knox · Mar 10, 2026
The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Knox 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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Peak hail signal 1" ≈ quarter · radar-estimated size aloft
Homes in the hail footprint 627
Ground reports 8 8 tornado
Radar surfaces 1 Estimated size only
Convective day · Mar 10, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Knox has seen in the last 12 months
Composite score · 4.4 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.4 /10
- Peak hail signal
- 25 /100
- Homes exposed
- 56 /100
- Ground truth
- 100 /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 Knox saw the hail — from two instruments
Mar 10, 2026 · Knox, IN
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Radar-estimated hail size Surface resolved
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Max size
1"
Only the radar-estimated size surface resolved for Mar 10, 2026 — this storm produced no NEXRAD point detections over Knox, so there is one map to show, not two.
The storm in context
Where Mar 10, 2026 sits in Knox's hail record.
This was Knox's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 2nd of the 5 storms we have logged here. Radar put the day's largest stone over Knox at 1" — radar-estimated size aloft.
The Mar 10, 2026 convective day was bigger than Knox: the same system put hail over 470 other tracked cities, 21 of them in Indiana. Nearest: Walkerton (9 miles northeast, up to 0.75"); La Crosse (13 miles west, up to 1.5"); Union Mills (17 miles northwest, up to 0.75").
These maps are stills. In the app this date is one of 5 Knox 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
8 reports 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.
Tornado reports
8 reports Tornado Rating unknown
2 SSE Brems Starke County
“Powerlines down on Route 8. 10 to 20 power flashes seen in the distance. Location relayed by storm chaser. Time estimated via radar. Delayed report. (IWX)”
— NOAA / SPC storm report
Tornado Rating unknown
1 N Toto Starke County
“Tornado picture from spotter sent in looking to the west-northwest. Lat/lon is spotter location. Delayed report. (IWX)”
— NOAA / SPC storm report
Tornado Rating unknown
2 WNW Toto Starke County
“Healthy 1ft diameter trees uprooted. Some snapped at the top. (IWX)”
— NOAA / SPC storm report
Tornado Rating unknown
3 W Toto Starke County
“Video obtained from storm chasers claiming to be on the south-southeast side of the parent mesocyclone clearly show two distinct tornadoes occurring at the same time. O (IWX)”
— NOAA / SPC storm report
Tornado Rating unknown
2 WNW Toto Starke County
“Spotter said there is damage to numerous trees in this area near W County Road 200 S on IN-39. (IWX)”
— NOAA / SPC storm report
Tornado Rating unknown
2 SW Brems Starke County
“Corrects previous tstm wnd dmg report to tornado from 2 SW Brems. Report of a barn destroyed with debris on Route 8 just west of the Starke County airport. Time estimat (IWX)”
— NOAA / SPC storm report
Tornado Rating unknown
3 N Toto Starke County
“Tornado observed. Damage between East 200 South and East 50 south. Large diameter trees downed. (IWX)”
— NOAA / SPC storm report
Storm 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 Brems and Toto — beyond Knox itself.
Damage-capable hail signal
What 1" hail means for Knox 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.
627 homes × $12,000 avg. claim
Potential roof exposure
$7.5M
Potential roof exposure — 627 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 3 jobs
- Illustrative work
- ~$45K
Close just 0.5% of the 627 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
March 2028
Claims from this storm can typically be filed until around March 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 $132 on top of the $150 plan.
Map unavailable
NEXRAD surface Storm date Knox / IN
Aug 11, 2026
1.5" Estimated 1.5"
6 ground reports Open report →
Estimated-size surface Storm date Knox / IN
Jul 18, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Knox / IN
Jul 2, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Knox / IN
Mar 31, 2026
1.5" Signatures 1.5" Estimated 0.75"
No ground reports filed Open report →
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Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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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 Aug 12, 2026.