Hail in Lake Andes · Aug 17, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Lake Andes that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 17, 2026 · noon–noon UTC
Severity
The 4th most severe storm Lake Andes has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 19 /100
- Homes exposed
- 43 /100
- Ground truth
- 0 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Lake Andes saw the hail — from two instruments
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for Aug 17, 2026 — this storm produced no NEXRAD point detections over Lake Andes, so there is one map to show, not two.
The storm in context
Where Aug 17, 2026 sits in Lake Andes's hail record.
This was Lake Andes's 3rd recorded hail day, arriving 48 days after the Jun 30, 2026 storm. By severity it ranks 4th of the 6 storms we have logged here. Radar put the day's largest stone over Lake Andes at 0.75" — radar-estimated size aloft.
The Aug 17, 2026 convective day was bigger than Lake Andes: the same system put hail over 428 other tracked cities, 29 of them in South Dakota. Nearest: Armour (9 miles northeast, up to 0.75"); Platte (20 miles northwest, up to 1"); White Lake (28 miles north, up to 0.75").
These maps are stills. In the app this date is one of 6 Lake Andes storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
The National Weather Service logged no spotter reports for this storm over Lake Andes. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Near the severe threshold
What 0.75" hail means for Lake Andes roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$1.7M
Potential roof exposure — 145 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 145 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
August 2028
Claims from this storm can typically be filed until around August 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $30 on top of the $150 plan.
Lake Andes hail history
Other storms in Lake Andes.
Sep 7, 2026
0.5"
Estimated-size surface Sep 1, 2026
2.75"
Estimated-size surface Aug 23, 2026
0.5"
Estimated-size surface Jun 30, 2026
1.75"
Estimated-size surface Jun 27, 2026
1.75"Take your next area into the field.
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