Tornado Rating unknown
Hartsburg Boone County
“Corrects previous tstm wnd dmg report from Hartsburg. Small tree... 6-8 inches in diameter... broken near base. Time estimated from radar. (LSX)”
— NOAA / SPC storm report
Hail in Hartsburg Apr 17, 2026
Both radar surfaces caught this storm: NEXRAD logged 0 hail signatures up to 1", and the radar-estimated size reached 0.5" aloft.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
Largest hailstone
1"
≈ quarter · the largest NEXRAD radar signature Homes in the hail footprint
157
Ground reports
4
4 tornadoThe 2nd most severe storm Hartsburg 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.
4.1 /10
- Hail size
- 25 /100
- Homes exposed
- 44 /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 Hartsburg 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.
NEXRAD radar signatures
NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Max size
1"
Detections
0
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
0.5"
Where Apr 17, 2026 sits in Hartsburg's hail record
This was Hartsburg's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 2nd of the 4 storms we have logged here. Radar put the day's largest stone over Hartsburg at 1" — the largest NEXRAD radar signature.
The Apr 17, 2026 convective day was bigger than Hartsburg: the same system put hail over 1,016 other tracked cities, 169 of them in Missouri. Nearest: Centertown (6 miles southwest, up to 1"); Ashland (7 miles north, up to 1"); Columbia (17 miles north, up to 1").
These maps are stills from Hartsburg's Apr 17, 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
4 reports Tornado Rating unknown
2 S Marion Cole County
“Corrects previous tornado report from 2 SSE Marion. High-resolution satellite imagery revealed 2 seperate tornado tracks. This 3.5 mile track ran from 2 S Marion... MO (LSX)”
— NOAA / SPC storm report
Tornado Rating unknown
2 SSE Marion Cole County
“NWS survey team found an EF-0 tornado from near the Missouri River... northeastward through Hartsburg... ending near Fulton. The tornado produced mainly tree damage alo (LSX)”
— NOAA / SPC storm report
Tornado Rating unknown
2 SSE Marion Cole County
“Corrects previous tstm wnd dmg report from 2 SSE Marion. Tree limb down near 179 and Sunflower Road. Time estimated from radar. (LSX)”
— 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 12 minutes, from to .
Reports came from Marion — beyond Hartsburg itself.
What 1" hail means for Hartsburg 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
$1.9M
Potential roof exposure — 157 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
1 job
Illustrative work
~$15K
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 Hartsburg on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Hartsburg storm history — this Apr 17, 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
Hartsburg hail history
← All hail in Hartsburg 4 recorded storm days in Hartsburg, MO
Other storms in Hartsburg
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.