Hail history for Prowers County, Colorado
Every NOAA hail report filed in Prowers County since 1958, with preliminary National Weather Service reports to November 5, 2026.
Readout · Prowers County
- Last hail
- Aug 15, 2026
- 1.50 in, ping pong ball size · preliminary
- Hail days, last 5 years
- 12
- since Nov 5, 2021 · 37 reports
- Largest ever
- 3.75 in
- teacup · May 16, 1999
367 reports on 208 days since 1958 · #18 of 54 Colorado counties
Hail map · Prowers County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Prowers County
The latest hail report in Prowers County is from August 15, 2026, 1.50 in (ping pong ball size). Since November 5, 2021 there have been 12 separate hail days; the biggest stones in that time were 2.75 in on July 6, 2023.
Over the 20 years 2006–2025, Prowers County logged 200 reports on 94 hail days, about 10.0 reports a year. That is 3.2 times the median Colorado county (3.1 a year) and ranks #18 of 54 Colorado counties for all-time reports. Prowers County holds 2% of all 15,581 hail reports in Colorado.
16% of reports with a size were 2 inches (hen egg) or larger, against 6% for the median Colorado county. The largest hail on record here is 3.75 in (teacup) on May 16, 1999 near Wiley.
Reports held about level in 2016–2025 (94) compared with 2006–2015 (106). The busiest year was 1997, with 22 reports on 11 days. Hail here peaks in June (35% of reports); 62% fall between April and June.
Reports a year 2006–2025 average
- Prowers County 10.0
- Median Colorado county 3.1
Hail days 2006–2025
- Prowers County 94
- Median Colorado county 41
Share 2 in or larger of sized reports
- Prowers County 16%
- Median Colorado county 6%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | |||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 8 | 1 | 1 | 10 | |||||||||
| 2023 | 1 | 11 | 12 | ||||||||||
| 2022 | 5 | 9 | 14 | ||||||||||
| 2021 | 3 | 2 | 4 | 9 | |||||||||
| 2020 | 5 | 4 | 2 | 3 | 14 | ||||||||
| 2019 | 2 | 4 | 1 | 7 | |||||||||
| 2018 | 2 | 5 | 7 | ||||||||||
| 2017 | 4 | 6 | 9 | 19 |
Hail days since Nov 5, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Aug 15, 2026 | 1 | 1.50 in | View |
| Jul 19, 2024 | 1 | 1.00 in | — |
| Jun 14, 2024 | 1 | 1.00 in | — |
| May 29, 2024 | 7 | 2.25 in | — |
| May 18, 2024 | 1 | 1.00 in | — |
| Jul 6, 2023 | 11 | 2.75 in | — |
| Jun 23, 2023 | 1 | 1.75 in | — |
| Jun 7, 2022 | 3 | 1.50 in | — |
| Jun 6, 2022 | 3 | 1.75 in | — |
| Jun 5, 2022 | 3 | 1.90 in | — |
| May 18, 2022 | 1 | 1.25 in | — |
| May 1, 2022 | 4 | 1.75 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| May 16, 1999 | 3.75 inteacup | Wiley | — | 17:30 local · NCEI |
| Aug 16, 1997 | 3.50 inteacup | 1 N Holly | — | 20:32 local · NCEI |
| Aug 10, 2017 | 3.00 inteacup | 4.28 NE Lamar | — | 17:54 local · NCEI |
| May 29, 2001 | 3.00 inteacup | Lamar | $5.0 million | 11:40 local · NCEI |
| Aug 16, 1997 | 3.00 inteacup | 1 N Holly | — | 20:25 local · NCEI |
Size of every report
- Under 1 in 102 28%
- 1–2 in 205 56%
- 2 in + 60 16%
Most recent reports
| Date | Size | Location | Time · source |
|---|---|---|---|
| Aug 15, 2026 | 1.50 inping pong ball | 12 NE Two Buttes | 00:02 UTC · NWS prelim. |
| Jul 19, 2024 | 1.00 inquarter | 2.07 N Bristol | 16:55 local · NCEI |
| Jun 14, 2024 | 1.00 inquarter | 9.83 SSE Holly | 08:02 local · NCEI |
| May 29, 2024 | 1.00 inquarter | 18.17 S Granada | 20:36 local · NCEI |
| May 29, 2024 | 2.00 inhen egg | 0.69 N Lamar | 19:45 local · NCEI |
| May 29, 2024 | 2.25 inhen egg | 15 SSE Lamar Arpt | 19:42 local · NCEI |
| May 29, 2024 | 1.75 ingolf ball | 9.69 S Lamar | 19:40 local · NCEI |
| May 29, 2024 | 1.25 inhalf dollar | 9.69 S Lamar | 19:39 local · NCEI |
| May 29, 2024 | 1.75 ingolf ball | 10.38 S Lamar | 19:35 local · NCEI |
| May 29, 2024 | 1.00 inquarter | 9.69 S Lamar | 19:27 local · NCEI |
| May 18, 2024 | 1.00 inquarter | 2.97 SSW Wiley | 19:54 local · NCEI |
| Jul 6, 2023 | 1.50 inping pong ball | 4.15 S Granada | 22:09 local · NCEI |
Cities and towns in Prowers County
Questions about hail in Prowers County
How often does it hail in Prowers County, Colorado?
367 hail reports have been logged in Prowers County since 1958. Over the 20 years 2006–2025 that averages 10.0 reports a year. That ranks #18 of 54 Colorado counties by number of reports.
When is hail season in Prowers County?
Most reports come in June, July, May. June alone accounts for 35% of all reports.
What is the largest hail recorded in Prowers County?
3.75 in (teacup size) on May 16, 1999 near Wiley. 16% of reports here were 2 inches or larger.
When did it last hail in Prowers County?
The most recent report in this data is from August 15, 2026 (1.50 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 5, 2026.
How many hail storms has Prowers County had in the last five years?
12 separate days with hail reports since November 5, 2021, adding up to 37 reports. The most recent was August 15, 2026.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.