Hail in Union Star · Aug 9, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Union Star that day. Open it on the live map to see the swath over the streets.
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Convective day · Aug 9, 2026 · noon–noon UTC
Severity
The 5th most severe storm Union Star 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
- 0 /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 Union Star saw the hail — from two instruments
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Only the radar-estimated size surface resolved for Aug 9, 2026 — this storm produced no NEXRAD point detections over Union Star, so there is one map to show, not two.
The storm in context
Where Aug 9, 2026 sits in Union Star's hail record.
This was Union Star's 5th recorded hail day, arriving 66 days after the Jun 4, 2026 storm. By severity it ranks 5th of the 5 storms we have logged here. Radar put the day's largest stone over Union Star at 0.5" — radar-estimated size aloft.
The Aug 9, 2026 convective day was bigger than Union Star: the same system put hail over 453 other tracked cities, 21 of them in Missouri. Nearest: Rea (9 miles northwest, up to 0.5"); Amazonia (17 miles southwest, up to 0.5"); Barnard (21 miles northwest, up to 0.5").
These maps are stills. In the app this date is one of 5 Union Star 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.
No ground reports were filed with the National Weather Service for this storm over Union Star. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Below the severe threshold
What 0.5" hail means for Union Star 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
Union Star hail history
Other storms in Union Star.
Estimated-size surface Jun 4, 2026
3.5"
Estimated-size surface May 16, 2026
1.75"
Estimated-size surface Apr 17, 2026
2.25"
Estimated-size surface Mar 5, 2026
1"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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