Hail map for Ballwin, MO — April 17, 2026
NOAA radar detected hail up to 1.00″ — quarter size — within 5 miles of Ballwin on April 17, 2026.
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- The April 17, 2026 swath — and every other storm since 2023 across Missouri
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- Jobs, contacts, estimates and invoices included
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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
- 1.00″
- 6.5 mi away · Public
Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
Did hail hit your address?
This page covers Ballwin 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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What people on the ground measured in Ballwin, MO on April 17, 2026
14 reports filed with the National Weather Service — 4 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.
- 1.00″ quarter size Public3 WNW Chesterfield, MO · 6.5 mi away3:35 PM CDTSt. Louis County
- 1.00″ quarter size Public2 S Harvester, MO · 8.7 mi away3:46 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public2 SE Harvester, MO · 9.3 mi away3:45 PM CDTSt. Charles County
Report from social media, largest hail stone around 1 inch.
- 1.00″ quarter size Public2 ENE Weldon Spring, MO · 9.5 mi away3:40 PM CDTSt. Charles County
- 1.00″ quarter size Emergency Mngr2 SSW Harvester, MO · 9.6 mi away3:42 PM CDTSt. Charles County
- 1.00″ quarter size PublicHarvester, MO · 10.2 mi away3:45 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public2 W Harvester, MO · 10.8 mi away3:39 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public3 NE Defiance, MO · 11.4 mi away3:25 PM CDTSt. Charles County
Corrects previous hail report from 3 NE Defiance. Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public3 NE Defiance, MO · 11.4 mi away3:15 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public1 NE Harvester, MO · 11.4 mi away3:49 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Public2 SW Saint Charles, MO · 12.1 mi away4:05 PM CDTSt. Charles County
Report from mPING: Quarter (1.00 in.).
- 1.00″ quarter size Trained SpotterCottleville, MO · 12.7 mi away3:48 PM CDTSt. Charles County
- 0.88″ penny size Trained SpotterHarvester, MO · 10.8 mi away3:45 PM CDTSt. Charles County
- 0.88″ penny size Trained Spotter2 ENE Harvester, MO · 11.4 mi away3:50 PM CDTSt. Charles County
Mostly dimes but up to nickel sized hail.
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 Ballwin, MO?
This page is one storm. If you are deciding which tool to work Ballwin, MO 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.
Ballwin hail on April 17, 2026
NOAA radar estimated stones up to 1.00 inches — quarter size — within about 5 miles of Ballwin that day, across 1 distinct size band. Sizes vary street to street inside a single swath.