Hail size 1"
1 SW Prospect Heights Cook County
“Report from mPING: Quarter (1.00 in.). (LOT)”
— NOAA / SPC storm report
Hail in Mount Prospect Apr 14, 2026
The radar-estimated size surface caught this storm, reaching 0.75" aloft. NEXRAD logged no point detections over Mount Prospect this day.
Largest hailstone
0.75"
≈ penny to nickel · radar-estimated size aloft Homes in the hail footprint
27,856
Ground reports
1
1 hailThe 2nd most severe storm Mount Prospect 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.
3.6 /10
- Hail size
- 19 /100
- Homes exposed
- 89 /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 Mount Prospect saw the hail — from two instruments
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar-estimated hail size
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
0.75"
Only the radar-estimated size surface resolved for Apr 14, 2026 — this storm produced no NEXRAD point detections over Mount Prospect, so there is one map to show, not two.
Where Apr 14, 2026 sits in Mount Prospect's hail record
This was Mount Prospect's 2nd recorded hail day, arriving 15 days after the Mar 30, 2026 storm. By severity it ranks 2nd of the 3 storms we have logged here. Radar put the day's largest stone over Mount Prospect at 0.75" — radar-estimated size aloft.
The Apr 14, 2026 convective day was bigger than Mount Prospect: the same system put hail over 476 other tracked cities, 44 of them in Illinois. Nearest: Arlington Heights (5 miles west, up to 1"); Winnetka (5 miles east, up to 0.5"); Des Plaines (7 miles south, up to 0.75").
These maps are stills from Mount Prospect's Apr 14, 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 Prospect Heights — beyond Mount Prospect itself.
What 0.75" hail means for Mount Prospect roofs
Hail this size sits right at the edge of the National Weather Service severe threshold. Newer roofs usually shrug it off, but aging or already-worn shingles can bruise, and soft metals — vents, flashing, gutters — often show the first dents.
What this storm is worth to a roofer
$334M
Potential roof exposure — 27,856 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
139 jobs
Illustrative work
~$2.1M
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 Mount Prospect on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Mount Prospect storm history — this Apr 14, 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
Mount Prospect hail history
← All hail in Mount Prospect 3 recorded storm days in Mount Prospect, IL
Other storms in Mount Prospect
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.