Both radar surfaces caught this storm: NEXRAD logged 0 hail signatures up to 2.5", and the radar-estimated size reached 3.75" aloft. At 3.75" — baseball — this is severe, roof-replacing hail: close to every roof inside the footprint becomes a claim candidate.
3.75"
≈ baseball · radar-estimated size aloft10,187
6
6 hailOverview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
This was Rio Grande City's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 7 storms we have logged here. Radar put the day's largest stone over Rio Grande City at 3.75" — radar-estimated size aloft.
The Mar 7, 2026 convective day was bigger than Rio Grande City: the same system put hail over 254 other tracked cities, 75 of them in Texas. Nearest: Roma (16 miles west, up to 4"); Falcon Heights (30 miles west, up to 4"); Freer (80 miles north, up to 1.75").
These maps are stills from Rio Grande City's Mar 7, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
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.
“Texas Department of Public Safety reports hail up to the size of softballs at the intersection of FM 3176 and Santa Elena Lane in Starr County in the vicinity of Rio Gr (BRO)”
— NOAA / SPC storm report
“Law enforcement reports hail the size of golf balls on Santa Elena Lane around midnight. Hail produced damage (glass and roof) to residence and vehicle. (BRO)”
— NOAA / SPC storm report
“Law enforcement reports hail the size of golf balls on Santa Elena Lane around midnight. Hail produced damage (glass and roof) to residence and vehicle. (BRO)”
— NOAA / SPC storm report
“Texas Department of Public Safety reports hail up to the size of softballs at the intersection of FM 3176 and Santa Elena Lane in Starr County in the vicinity of Rio Gr (BRO)”
— NOAA / SPC storm report
“Military reports baseball size hail on the Rio Grande River just south of Escobares in Starr County. (BRO)”
— NOAA / SPC storm report
“Military reports baseball size hail on the Rio Grande River just south of Escobares in Starr County. (BRO)”
— NOAA / SPC storm report
Hail was reported over 68 minutes, from to .
Reports came from Escobares — beyond Rio Grande City itself.
Two-inch-plus hail punctures shingles, breaks skylights and windows, and dents anything soft. In the core of a footprint like this, close to every roof is a candidate for an insurance claim. Speed decides who writes those jobs.
$122M
Potential roof exposure — 10,187 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Radar updates in real time, spotter reports appear on the map as they're filed, and the full Rio Grande City storm history — this Mar 7, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
7 recorded storm days in Rio Grande City, TX
Aug 2, 2026
1.75"
Jul 6, 2026
1"
May 23, 2026
0.5"
May 20, 2026
0.5"
May 10, 2026
1"
May 9, 2026
1.75"