Hail map for Alton, IL — April 1, 2024
NOAA radar detected hail up to 1.00″ — quarter size — within 5 miles of Alton on April 1, 2024.
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- The April 1, 2024 swath — and every other storm since 2023 across Illinois
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- Max hail size
- 1.00″
- quarter
- Impact rating
- 3/10
- from stone size
- Size bands over the city
- 1
- distinct radar bands
- Measured on the ground
- 2.00″
- 10.7 mi away · Public
Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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This page covers Alton 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.
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Other towns hit on April 1, 2024
What people on the ground measured in Alton, IL on April 1, 2024
12 reports filed with the National Weather Service — 3 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 2.00″ hen egg size Public2 NNW Ferguson, MO · 10.7 mi away6:56 PM CDTSt. Louis County
Spotter measured 2 inch hail at his home.
- 1.75″ golf ball size Public1 WSW Ferguson, MO · 12.4 mi away6:55 PM CDTSt. Louis County
Picture of golf ball sized hail in Ferguson estimated compared to penny in hand.
- 1.50″ half dollar size Public1 N Dellwood, MO · 9.8 mi away6:57 PM CDTSt. Louis County
Estimated ping pong ball sized hail from emailed photo.
- 1.50″ half dollar size Public1 S Florissant, MO · 10.1 mi away6:56 PM CDTSt. Louis County
Reported ping pong ball sized hail in Florissant. Via Facebook.
- 1.50″ half dollar size PublicFerguson, MO · 11.5 mi away6:56 PM CDTSt. Louis County
- 1.00″ quarter size Trained Spotter1 S Florissant, MO · 10.1 mi away6:58 PM CDTSt. Louis County
quarter sized hail reported at location.
- 1.00″ quarter size Public1 NNE Hazelwood, MO · 11.3 mi away6:54 PM CDTSt. Louis County
Numerous reports of quarter sized hail in Hazelwood.
- 1.00″ quarter size Trained Spotter1 NE Hazelwood, MO · 11.3 mi away6:51 PM CDTSt. Louis County
- 1.00″ quarter size Public1 NNW Hazelwood, MO · 11.7 mi away6:51 PM CDTSt. Louis County
Via Twitter, estimated quarter sized hail from video.
- 1.00″ quarter size PublicJennings, MO · 12.0 mi away6:59 PM CDTSt. Louis County
Unsure on the true size of the stones, but was confident they were larger than quarters.
- 1.00″ quarter size Official NWS Obs1 N Woodson Terrace, MO · 13.6 mi away6:45 PM CDTSt. Louis County
KSTL observer reported quarter sized hail at location.
- 0.88″ penny size Amateur Radio1 W Bethalto, IL · 6.2 mi away7:16 PM CDTMadison County
Report of nickel sized hail and heavy rain.
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.
Shopping for a hail app to work Alton, IL?
This page is one storm. If you are deciding which tool to work Alton, IL with all season, these compare the ones roofers actually buy — with every price taken from the vendor's own site and linked.
- Best hail tracking apps, comparedHailMate, HailTrace, Hail Recon, HailStrike and RadarScope — every published price sourced and linked, and who each one is genuinely right for.
- HailMate vs HailTraceStreet-level NOAA swaths on a map your crew can knock, with the CRM already inside — instead of quote-only meteorologist maps billed on top of one.
- Hail map apps for roofers (and the Hail Recon alternative)Every storm on one map instead of loading dates one at a time — plus the canvassing and the whole claim, monthly, for what one state costs them a year.
- Best canvassing apps, comparedHailMate, SalesRabbit, SPOTIO, Knockio, RoofLink and Badger Maps — every published price sourced and linked, and two of them publish none.
Alton hail on April 1, 2024
NOAA radar estimated stones up to 1.00 inches — quarter size — within about 5 miles of Alton that day, across 1 distinct size band. Sizes vary street to street inside a single swath.