Hail size 1.75"
4 NE Cainsville Mercer County
“Civilian sent photo of quarter to golf ball size hail from rural Mercer County northeast of Cainsville. Time estimated from radar. (EAX)”
— NOAA / SPC storm report
Hail in Princeton Apr 17, 2026
Both radar surfaces caught this storm: NEXRAD logged 19 hail signatures up to 2.25", and the radar-estimated size reached 1.5" aloft. At 2.25" — tennis ball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
Largest hailstone
2.25"
≈ tennis ball · the largest NEXRAD radar signature Homes in the hail footprint
358
Ground reports
1
1 hailThe 2nd most severe storm Princeton 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.
4.9 /10
- Hail size
- 56 /100
- Homes exposed
- 51 /100
- Ground truth
- 17 /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 Princeton 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.
NEXRAD radar signatures
The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Max size
2.25"
Detections
19
Radar-estimated hail size
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.
Max size
1.5"
Where Apr 17, 2026 sits in Princeton's hail record
This was Princeton's 4th recorded hail day, arriving 2 days after the Apr 15, 2026 storm. By severity it ranks 2nd of the 8 storms we have logged here. Radar put the day's largest stone over Princeton at 2.25" — the largest NEXRAD radar signature.
The Apr 17, 2026 convective day was bigger than Princeton: the same system put hail over 1,016 other tracked cities, 169 of them in Missouri. Nearest: Mercer (13 miles northeast, up to 1.75"); Harris (13 miles southeast, up to 1.75"); Blythedale (15 miles northwest, up to 2.5").
These maps are stills from Princeton'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.
Hail reports
1 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 Cainsville — beyond Princeton itself.
What 2.25" hail means for Princeton roofs
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
What this storm is worth to a roofer
$4.3M
Potential roof exposure — 358 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
2 jobs
Illustrative work
~$30K
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 Princeton on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Princeton 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
Princeton hail history
← All hail in Princeton 8 recorded storm days in Princeton, MO
Other storms in Princeton
Jun 11, 2026
1" Estimated 1"
2
ground reports 
Jun 10, 2026
1.5" Estimated 1.5"
5
ground reports 
Jun 6, 2026
0.5" Estimated 0.5"
No ground reports filed 
May 16, 2026
1.75" Signatures 1.75" Estimated 1.5"
1
ground report 
Apr 15, 2026
1" Estimated 1"
1
ground report 
Apr 2, 2026
1.75" Signatures 1.75" Estimated 0.75"
1
ground report 
Mar 5, 2026
1" Signatures 1"
No ground reports filed
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 2, 2026.