Hail on Date

Hail in Fort Collins and Greeley on Saturday, July 20, 2024

The Storm Prediction Center logged 9 hail reports in Fort Collins and Greeley on Saturday, July 20, 2024, between 6:53 pm and 8:15 pm MDT, in 2 of the metro's 2 counties. The largest was 1.50 inches at 1 NW Campion (Larimer County) at 7:44 pm. NOAA radar flagged 553 hail signatures inside the metro that day: 184 rated a 100% chance of hail and 191 with a maximum expected size of 1 inch or more.

9spotter hail reports in the metro
1.50 inlargest reported, 1 NW Campion
553radar hail signatures inside the metro, 184 rated 100%
3.50 inlargest expected size on radar
Map of Fort Collins and Greeley counties with 553 radar hail signatures and 9 spotter hail reports on July 20, 2024 Larimer Weld 1.50 in, 1 NW Campion
Amber dots are radar hail signatures inside the metro's counties (every cell the algorithm rated, 10% to 100% chance of hail), darkest under 1 inch, brighter from 1 inch, brightest at 2 inches and up. Triangles are spotter reports; the filled one is the largest. County names are drawn at each county's center.

Where hail was reported

Reports came from 6 places in Larimer and Weld counties, named as the National Weather Service described them.

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.

TimeSizePlaceCountyNWS comment
6:53 pm1.001 ENE Fort CollinsLarimerBetween half inch to 1 inch diameter hail fell for 5 minutes. (BOU)
7:34 pm1.003 NW CampionLarimer(BOU)
7:40 pm1.003 SW LovelandLarimer(BOU)
7:44 pm1.501 NW CampionLarimer(BOU)
7:45 pm1.254 WSW BerthoudLarimerUp to half dollar size hail fell for a duration of 6 minutes. (BOU)
7:52 pm1.002 SSW BerthoudLarimerDelayed report. Time estimated by radar. (BOU)
7:53 pm1.003 SSE GilcrestWeld(BOU)
8:00 pm1.002 SSW BerthoudLarimer(BOU)
8:15 pm1.003 WSW FrederickWeldDelayed report. Time estimated by radar. (BOU)

What NEXRAD radar recorded inside the metro

553 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; 184 were rated 100% and 29 had a maximum expected size of 2 inches or more.

RadarSignaturesRated 100%1 in or more2 in or moreLargest expectedFirstLast
KCYS1925057163.50 in12:47 pm9:06 pm
KFTG181485483.00 in12:48 pm8:45 pm
KDEN117535201.75 in2:01 pm8:32 pm
KPUX58322852.25 in3:01 pm8:28 pm
KGLD51000.50 in4:14 pm4:36 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 July 20, 2024

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.