Hail in Onida · Jul 18, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Onida that day. Open it on the live map to see the swath over the streets.
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Convective day · Jul 18, 2026 · noon–noon UTC
Severity
The 7th most severe storm Onida 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
- 13 /100
- Homes exposed
- 28 /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 Onida 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 Jul 18, 2026 — this storm produced no NEXRAD point detections over Onida, so there is one map to show, not two.
The storm in context
Where Jul 18, 2026 sits in Onida's hail record.
This was Onida's 5th recorded hail day, arriving 11 days after the Jul 7, 2026 storm. By severity it ranks 7th of the 7 storms we have logged here. Radar put the day's largest stone over Onida at 0.5" — radar-estimated size aloft.
The Jul 18, 2026 convective day was bigger than Onida: the same system put hail over 377 other tracked cities, 2 of them in South Dakota. Nearest: Blunt (14 miles south, up to 0.5"); Glen Ullin (179 miles northwest, up to 0.5"); Beulah (181 miles northwest, up to 0.5").
These maps are stills. In the app this date is one of 7 Onida 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 Onida. 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.
Below the severe threshold
What 0.5" hail means for Onida roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$300K
Potential roof exposure — 25 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
July 2028
Claims from this storm can typically be filed until around July 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 $5 on top of the $150 plan.
Estimated-size surface Sep 6, 2026
1"
Estimated-size surface Sep 5, 2026
2.25"
Estimated-size surface Jul 7, 2026
1"
Estimated-size surface Jul 4, 2026
1"
Estimated-size surface Jul 2, 2026
2"
Estimated-size surface Apr 22, 2026
1"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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