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
Hail in Knox Mar 10, 2026
The radar-estimated size surface caught this storm, reaching 1" aloft. NEXRAD logged no point detections over Knox this day.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
Largest hailstone
1"
≈ quarter · radar-estimated size aloft Homes in the hail footprint
627
Ground reports
8
8 tornadoThe most severe storm Knox 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.
4.4 /10
- Hail size
- 25 /100
- Homes exposed
- 56 /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 Knox saw the hail — from two instruments
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
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.
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 1st of the 4 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 (12 miles northeast, up to 0.75"); La Crosse (16 miles west, up to 1.5"); La Porte (16 miles northwest, up to 0.75").
These maps are stills from Knox's Mar 10, 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.
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
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Reports came from Brems and Toto — beyond Knox itself.
What 1" hail means for Knox roofs
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
What this storm is worth to a roofer
$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
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.
Track hail over Knox on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Knox storm history — this Mar 10, 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
Knox hail history
← All hail in Knox 4 recorded storm days in Knox, IN
Other storms in Knox
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.