Hail map for Watertown, SD — July 27, 2025
NOAA radar detected hail up to 2.00″ — hen egg size — within 5 miles of Watertown on July 27, 2025.

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- The July 27, 2025 swath — and every other storm since 2023 across South Dakota
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- Max hail size
- 2.00″
- hen egg
- Impact rating
- 7/10
- from stone size
- Size bands over the city
- 3
- distinct radar bands
- Reached the ground
- 70%
- Severe-hail probability
- Measured on the ground
- 2.75″
- 3.0 mi away · Trained Spotter
Severe-hail probability peaked at 70% over Watertown that day — high: around even odds of 1″ hail reaching the ground. 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 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 Watertown 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'll have the date and the stone size in writing — which is the first thing an adjuster asks for.
Other towns hit on July 27, 2025
What people on the ground measured in Watertown, SD on July 27, 2025
7 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.
- 2.75″ baseball size Trained SpotterWatertown Airport, SD · 3.0 mi away6:40 PM CDTCodington County
- 1.75″ golf ball size Trained Spotter4 NW Rauville, SD · 8.4 mi away6:26 PM CDTCodington County
- 1.75″ golf ball size Trained Spotter3 NW Castlewood, SD · 10.6 mi away8:00 PM CDTHamlin County
- 1.75″ golf ball size Trained Spotter4 NE Hazel, SD · 11.8 mi away7:40 PM CDTHamlin County
Radar estimated time.
- 1.50″ half dollar size Public1 SW Watertown, SD · 0.7 mi away6:54 PM CDTCodington County
- 1.00″ quarter size Public1 SW Watertown, SD · 0.7 mi away7:12 PM CDTCodington County
Also reported limbs down.
- 1.00″ quarter size PublicCastlewood, SD · 13.1 mi away8:25 PM CDTHamlin County
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 Watertown, SD?
This page is one storm. If you are deciding which tool to work Watertown, SD 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.
Watertown hail on July 27, 2025
NOAA radar estimated stones up to 2.00 inches — hen egg size — within about 5 miles of Watertown that day, across 3 distinct size bands. Sizes vary street to street inside a single swath.