Watertown, SD

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.

Hail swath map for Watertown, SD on July 27, 2025 showing 2.00 inch hail.
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%
NOAA POSH probability
Measured on the ground
2.75″
3.0 mi away · Trained Spotter

NOAA's Probability of Severe Hail 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 MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

Roofing contractors

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Homeowners

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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.

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Other towns hit on July 27, 2025

Dickinson, ND2.00″Minneapolis, MN1.50″Saint Paul, MN1.50″Brooklyn Park, MN1.50″Plymouth, MN1.50″Maple Grove, MN1.50″Lakeville, MN1.50″Saint Louis Park, MN1.50″Roseville, MN1.50″Brooklyn Center, MN1.50″Longfellow Community, MN1.50″Fridley, MN1.50″
Every South Dakota city hit on July 27, 2025 →

Other hail dates for Watertown

July 6, 20261.00″September 2, 20251.00″August 21, 20251.00″July 31, 20241.00″June 18, 20241.50″June 12, 20242.00″
Every storm over Watertown →

What people on the ground measured in Watertown, SD on July 27, 2025

7 reports filed with the National Weather Service — 4 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.

  • 2.75″ baseball size Trained Spotter
    Watertown Airport, SD · 3.0 mi away6:40 PM CDTCodington County
  • 1.75″ golf ball size Trained Spotter
    4 NW Rauville, SD · 8.4 mi away6:26 PM CDTCodington County
  • 1.75″ golf ball size Trained Spotter
    3 NW Castlewood, SD · 10.6 mi away8:00 PM CDTHamlin County
  • 1.75″ golf ball size Trained Spotter
    4 NE Hazel, SD · 11.8 mi away7:40 PM CDTHamlin County

    Radar estimated time.

  • 1.50″ half dollar size Public
    1 SW Watertown, SD · 0.7 mi away6:54 PM CDTCodington County
  • 1.00″ quarter size Public
    1 SW Watertown, SD · 0.7 mi away7:12 PM CDTCodington County

    Also reported limbs down.

  • 1.00″ quarter size Public
    Castlewood, 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.

FAQ

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.

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