Hail map for Oswego, IL — March 30, 2026
NOAA radar detected hail up to 1.50″ — half dollar size — within 5 miles of Oswego on March 30, 2026.
- Max hail size
- 1.50″
- half dollar
- Impact rating
- 5/10
- from stone size
- Size bands over the city
- 2
- distinct radar bands
- Reached the ground
- 30%
- NOAA POSH probability
- Measured on the ground
- 1.25″
- 4.0 mi away · Public
NOAA's Probability of Severe Hail peaked at 30% over Oswego that day — low to moderate: the radar signature was there, ground impact less certain. It is a separate model from the size estimate above: one asks how big the stones were in the storm, the other asks whether they made it down.
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
Work Oswego on the live hail map
- The whole state around Oswego, with this swath already on it
- Three years of hail swaths, filterable by stone size
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Did hail hit your address?
This page covers Oswego as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.
Check my addressFree, and no account needed to look it up. If hail did hit, you can ask for a free inspection from a vetted local roofer.
What people on the ground measured in Oswego, IL on March 30, 2026
12 reports filed with the National Weather Service — 8 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 1.25″ half dollar size Public3 SE Sugar Grove, IL · 4.0 mi away10:18 PM CDTKane County
Report from mPING: Half Dollar (1.25 in.).
- 1.25″ half dollar size Public3 NW Romeoville, IL · 10.9 mi away10:26 PM CDTWill County
Report from mPING: Half Dollar (1.25 in.).
- 1.00″ quarter size Emergency MngrBoulder Hill, IL · 2.0 mi away10:15 PM CDTKendall County
Time estimated from radar.
- 1.00″ quarter size Public2 W Oswego, IL · 2.5 mi away10:02 PM CDTKendall County
- 1.00″ quarter size Trained Spotter1 NNE Yorkville, IL · 4.8 mi away9:50 PM CDTKendall County
Photo shared to office email account showing hail measuring 1 inch in diameter.
- 1.00″ quarter size Emergency Mngr2 NW Montgomery, IL · 4.9 mi away10:13 PM CDTKane County
- 1.00″ quarter size Trained SpotterAurora, IL · 5.7 mi away10:12 PM CDTKane County
Corrects the time previous hail report from Aurora. Report of nickel to quarter sized hail in Aurora. Time estimated via radar.
- 1.00″ quarter size Public5 NNW Plainfield, IL · 6.3 mi away10:22 PM CDTWill County
Time estimated via radar.
- 1.00″ quarter size Trained Spotter4 NE Aurora, IL · 8.8 mi away10:12 PM CDTDuPage County
Time estimated via radar.
- 1.00″ quarter size Trained SpotterBig Rock, IL · 11.6 mi away10:05 PM CDTKane County
- 1.00″ quarter size Trained Spotter2 SSE Naperville, IL · 12.4 mi away10:23 PM CDTDuPage County
Time estimated via radar.
- 1.00″ quarter size Emergency Mngr1 NNE Romeoville, IL · 13.7 mi away10:26 PM CDTWill County
Time estimated from radar.
Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.
Oswego hail on March 30, 2026
NOAA radar estimated stones up to 1.50 inches — half dollar size — within about 5 miles of Oswego that day, across 2 distinct size bands. Sizes vary street to street inside a single swath.