Rock County, NE hail & severe wind history
115 storm reports on file for Rock County between 2010-05-24 and 2025-06-22 — 86 hail and 29 severe thunderstorm wind. That averages 7.2 reports a year, and Jun is the busiest month.
At a glance
- Most recent hail report: Jun 22, 2025 — 1.25" (half dollar), 7.56 mi SSW of Rose.
- Hail was reported on 41 days since 2010 — about 2.6 hail days a year.
- Largest hail on record: 4.25" (grapefruit) on Jun 8, 2020.
- Rock County has more hail reports than 46% of the 93 Nebraska counties we cover.
Search every Rock County report
Check a single date first, or filter the full record below — pick a year, narrow to a month, or drag the hail-size slider to see only the larger stones (1", quarter size, is the National Weather Service severe threshold).
Loading Rock County storm reports…
Worst storm days in Rock County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2020-06-08 | 8 | 4.25" (grapefruit) | — |
| 2011-05-30 | 7 | 2.75" (baseball) | — |
| 2014-06-03 | 7 | 1.75" (golf ball) | 119 mph |
| 2017-06-13 | 4 | 4.25" (grapefruit) | — |
| 2024-05-14 | 4 | 1.75" (golf ball) | — |
| 2011-06-14 | 4 | 1.75" (golf ball) | — |
| 2018-06-01 | 4 | 1.5" (ping pong ball) | 60 mph |
| 2014-07-09 | 4 | 1.5" (ping pong ball) | — |
| 2023-05-06 | 3 | 3" (teacup) | 60 mph |
| 2013-08-21 | 3 | 2.75" (baseball) | — |
Reports by year
Report counts are driven partly by how many people were around to report a storm, so recent years tend to look busier than the early 2010s. Treat the trend as a reporting trend, not purely a weather trend.
Notable large-hail events (2" and up)
| Date | Size | Near | What was reported |
|---|---|---|---|
| 2023-05-06 | 3" teacup | 6.24 mi S of Newport | Public reports three inch diameter hail along with quarter and golf ball sized hail at this location. Two inches of hail accumulation was reported as well. |
| 2020-06-08 | 4.25" grapefruit | 14.4 mi NE of Rose | No narrative filed |
| 2017-06-13 | 4.25" grapefruit | 10.3 mi SW of Bassett | No narrative filed |
| 2013-08-21 | 2.75" baseball | 0 mi N of Newport | No narrative filed |
| 2011-06-19 | 2.5" tennis ball | .86 mi SW of Newport | Hail up to Tennis ball sized lasted for 20 minutes. |
| 2011-05-30 | 2.5" tennis ball | 3.07 mi W of Rose | Two vehicles had windshields damaged from hail. One vehicle rear window was also broken out. Hail covered the ground. |
| 2011-05-30 | 2.75" baseball | 9.05 mi NE of Rose | No narrative filed |
| 2011-05-30 | 2.75" baseball | 10.14 mi NE of Rose | Fire Chief reported large hail fell for 20 minutes in Sybrant. The large hail broke out several vehicle windows and four homes had windows and siding broken or damaged. |
When does hail hit Rock County?
Across 16 years of records, June produced the most reports (52), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 0 | 0.0% |
| February | 0 | 0.0% |
| March | 0 | 0.0% |
| April | 2 | 1.7% |
| May | 22 | 19.1% |
| June | 52 | 45.2% |
| July | 16 | 13.9% |
| August | 17 | 14.8% |
| September | 5 | 4.3% |
| October | 1 | 0.9% |
| November | 0 | 0.0% |
| December | 0 | 0.0% |
Neighboring counties
Counties that share a border with Rock County (U.S. Census county adjacency), where we have storm records:
| County | Storm reports | Largest hail |
|---|---|---|
| Holt County, NE | 324 | 4" |
| Brown County, NE | 146 | 2.5" |
| Keya Paha County, NE | 89 | 2.75" |
| Loup County, NE | 82 | 6" |
| Boyd County, NE | 81 | 2" |
See all 93 Nebraska counties →
Common questions about hail in Rock County
- How often does it hail in Rock County?
- Hail was reported on 41 separate days between 2010 and 2025, about 2.6 days a year, with June the busiest month for storm reports. 80 reports were quarter size (1") or larger.
- Does a report here mean hail hit my street?
- Not necessarily. Each report is one observation tied to a nearby landmark, and a county can be large. Storms also go unreported where few people live. Use the date check above to see what was reported nearby, and treat it as a starting point.
- How big is a 1.75" hailstone?
- Forecasters describe hail by everyday objects: 1" is a quarter, 1.75" a golf ball, 2.75" a baseball. The sizes in these reports are estimates made by the person reporting, not lab measurements.
- Where do I get the official record?
- All reports here come from the NOAA NCEI Storm Events Database, which you can search directly. For anything formal, use NOAA’s own records rather than this page.
Look up another place
About these numbers
Every row above is a report filed with the National Weather Service and archived in the NOAA NCEI Storm Events Database (FIPS 31149). Reports are eyewitness, trained-spotter and damage-survey observations, so they cluster near roads and towns and miss storms over empty country. Hail sizes are estimates. Damage figures are preliminary as filed and are never revised in this archive. Use this page for background, not for an insurance claim, a legal filing, or a roof assessment — for those, get the official record from NOAA directly.