Hail history in O'Brien County, IA
Hail of 1 inch or larger was reported in O'Brien County on 8 days between Jan 1, 2025 and Oct 26, 2026. The largest was 2.00 in (hen egg) on Sep 22, 2025, near 4 N Sutherland.
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Every hail day in O'Brien County
| Storm day | Largest hail | Reports | Near | |
|---|---|---|---|---|
| Jun 27, 2026 | 1.00 in (quarter) | 1 | Sanborn | Report for this date → |
| May 24, 2026 | 1.25 in (half dollar) | 1 | Sanborn | Report for this date → |
| May 18, 2026 | 1.00 in (quarter) | 1 | Sanborn | Report for this date → |
| May 17, 2026 | 1.75 in (golf ball) | 1 | 3 S Sanborn | Report for this date → |
| Apr 13, 2026 | 1.75 in (golf ball) | 7 | 4 SE Granville | Report for this date → |
| Sep 22, 2025 | 2.00 in (hen egg) | 4 | 4 N Sutherland | Report for this date → |
| Sep 16, 2025 | 1.75 in (golf ball) | 2 | 3 NNW Hartley | Report for this date → |
| Apr 17, 2025 | 1.50 in (ping pong ball) | 1 | 2 S Archer | Report for this date → |
When hail falls in O'Brien County
Where hail was reported
Places named in the reports, given as distance and direction from the nearest town, as the National Weather Service logs them.
- Sanborn6 reports
- 3 S Sanborn2 reports
- Primghar2 reports
- 2 S Archer1 report
- 3 NNE Archer1 report
- 3 NNW Hartley1 report
- 3 WSW Primghar1 report
- 4 N Sutherland1 report
- 4 SE Granville1 report
- 4 SW Melvin1 report
More hail history in Iowa
See a sample satellite hail report →
Source and method
NOAA Storm Prediction Center preliminary local storm reports of hail 1 inch or larger, Jan 1, 2025 to Oct 26, 2026 (updated Oct 27, 2026). Dates are SPC storm days, which run from 12:00 UTC to 12:00 UTC (about 7 a.m. to 7 a.m. Central), so a late-night storm appears on the day it started. Reports come from spotters, the public and NWS offices: they can be revised, and a storm nobody reported is missing. SPC storm reports.
A Skybridge report goes further for one address and date: GOES satellite cloud-top and lightning data, NOAA MRMS radar hail size and these storm reports within 50 km, in one document reviewed by a person, with a code anyone can verify.