Hail in Fort Collins and Greeley on Tuesday, June 17, 2025
The Storm Prediction Center logged 18 hail reports in Fort Collins and Greeley on Tuesday, June 17, 2025, between 2:21 am and 2:08 pm MDT, in 2 of the metro's 2 counties. The largest was 2.75 inches at Milliken (Weld County) at 3:40 am. NOAA radar flagged 1,217 hail signatures inside the metro that day: 575 rated a 100% chance of hail and 476 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 9 places in Larimer and Weld counties, named as the National Weather Service described them.
- Johnstown 4 reports, up to 2.00 in
- Eaton 3 reports, up to 1.75 in
- Wellington 3 reports, up to 2.50 in
- Lucerne 2 reports, up to 1.25 in
- Milliken 2 reports, up to 2.75 in
- Black Hollow Reserv 1 report, up to 1.25 in
- Gill 1 report, up to 1.00 in
- Platteville 1 report, up to 2.25 in
- Timnath 1 report, up to 1.00 in
Every hail report logged that day
Times are Mountain Daylight Time. Sizes are in inches, as reported. The comment is the National Weather Service's text as published in the Storm Prediction Center's daily log.
| Time | Size | Place | County | NWS comment |
|---|---|---|---|---|
| 2:21 am | 1.50 | 2 SSE Wellington | Larimer | (BOU) |
| 2:30 am | 2.50 | 1 SSE Wellington | Larimer | (BOU) |
| 2:33 am | 1.25 | Eaton | Weld | Report from mPING: Half Dollar (1.25 in.). (BOU) |
| 2:36 am | 2.00 | 1 S Wellington | Larimer | Report from mPING: Hen Egg (2.00 in.). (BOU) |
| 2:38 am | 1.25 | 1 SW Lucerne | Weld | Report from mPING: Half Dollar (1.25 in.). (BOU) |
| 2:39 am | 1.75 | 1 SW Eaton | Weld | Report from mPING: Golf Ball (1.75 in.). (BOU) |
| 2:49 am | 1.00 | 1 W Gill | Weld | Report from mPING: Quarter (1.00 in.). (BOU) |
| 3:02 am | 1.25 | 3 W Black Hollow Reserv | Weld | Report from mPING: Half Dollar (1.25 in.). (BOU) |
| 3:24 am | 1.00 | 2 W Johnstown | Weld | Report from mPING: Quarter (1.00 in.). (BOU) |
| 3:28 am | 1.00 | 2 NE Johnstown | Weld | Report from mPING: Quarter (1.00 in.). (BOU) |
| 3:31 am | 1.25 | 2 NE Johnstown | Weld | Report from mPING: Half Dollar (1.25 in.). (BOU) |
| 3:34 am | 2.00 | 2 NE Johnstown | Weld | Report from mPING: Hen Egg (2.00 in.). (BOU) |
| 3:40 am | 2.75 | Milliken | Weld | Picture from Social Media with a few larger stones as well. (BOU) |
| 3:40 am | 1.50 | 1 NE Milliken | Weld | (BOU) |
| 3:48 am | 1.50 | Eaton | Weld | Report from mPING: Ping Pong Ball (1.50 in.). (BOU) |
| 4:01 am | 1.25 | 1 SW Lucerne | Weld | Report from mPING: Half Dollar (1.25 in.). (BOU) |
| 1:52 pm | 1.00 | 2 ESE Timnath | Weld | (BOU) |
| 2:08 pm | 2.25 | 1 W Platteville | Weld | Delayed report. (BOU) |
What NEXRAD radar recorded inside the metro
1,217 signatures from 5 radars fell inside the metro's counties on this local date, counting every cell the algorithm rated from a 10% to a 100% chance of hail; 575 were rated 100% and 91 had a maximum expected size of 2 inches or more.
| Radar | Signatures | Rated 100% | 1 in or more | 2 in or more | Largest expected | First | Last |
|---|---|---|---|---|---|---|---|
| KFTG | 347 | 157 | 123 | 17 | 3.00 in | 2:33 am | 7:48 pm |
| KCYS | 343 | 179 | 138 | 22 | 3.50 in | 2:30 am | 7:43 pm |
| KDEN | 336 | 149 | 125 | 20 | 2.75 in | 2:36 am | 3:18 pm |
| KPUX | 184 | 88 | 87 | 32 | 4.00 in | 2:33 am | 3:03 pm |
| KGLD | 7 | 2 | 3 | 0 | 1.25 in | 2:23 pm | 3:05 pm |
Each radar that scans a storm writes its own signature about every 4 to 6 minutes, so one storm produces many rows and overlapping radars count it more than once. The raw rows for this day are in NOAA's Severe Weather Data Inventory.
Check an address for June 17, 2025
See, free, how many hail signatures NOAA recorded within 1, 3 and 5 miles of one address that day and the nearest spotter report. The full report is $19.
Spotter reports come from the Storm Prediction Center's preliminary daily logs, grouped here by local calendar date (Mountain Daylight Time) and by county: a report counts for Fort Collins and Greeley when its coordinates fall inside one of the metro's 2 counties (Larimer and Weld counties). Radar signatures are estimates from the Hail Detection Algorithm, not measured stones; they include every cell it rated, from a 10% to a 100% probability of hail. How these pages are built.