Hail on Date

Hail in Louisville on Saturday, August 20, 2022

The Storm Prediction Center logged 5 hail reports in Louisville on Saturday, August 20, 2022, between 5:35 pm and 5:53 pm EDT, in 2 of the metro's 8 counties. The largest was 1.00 inches at 1 SE Charlestown (Clark, IN) at 5:53 pm. NOAA radar flagged 17 hail signatures inside the metro that day: 0 rated a 100% chance of hail and 0 with a maximum expected size of 1 inch or more.

5spotter hail reports in the metro
1.00 inlargest reported, 1 SE Charlestown
17radar hail signatures inside the metro, 0 rated 100%
0.50 inlargest expected size on radar
Map of Louisville counties with 17 radar hail signatures and 5 spotter hail reports on August 20, 2022 Jefferson Oldham Bullitt Shelby Spencer Clark Floyd Harrison 1.00 in, 1 SE Charlestown
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 4 places in Clark, IN and Floyd, IN, named as the National Weather Service described them.

Every hail report logged that day

Times are Eastern 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
5:35 pm1.002 S Saint JosephFloyd, IN(LMK)
5:36 pm1.002 W CementvilleFloyd, INRESTAURANT EMPLOYEE REPORTED QUARTER SIZED HAIL. (LMK)
5:38 pm1.001 W CementvilleFloyd, INREPORT FROM MPING: QUARTER (1.00 IN.). (LMK)
5:38 pm1.00HamburgClark, INNWS EMPLOYEE MEASURED ONE INCH HAIL AT HIS HOUSE. (LMK)
5:53 pm1.001 SE CharlestownClark, INREPORT FROM MPING: QUARTER (1.00 IN.). (LMK)

What NEXRAD radar recorded inside the metro

17 signatures from 6 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; 0 were rated 100% and 0 had a maximum expected size of 2 inches or more.

RadarSignaturesRated 100%1 in or more2 in or moreLargest expectedFirstLast
KVWX60000.50 in1:29 pm3:14 pm
KIND40000.50 in2:44 pm8:43 pm
KILN20000.50 in1:32 pm1:37 pm
KHPX20000.50 in2:45 pm3:03 pm
KSDF20000.50 in3:00 pm3:00 pm
KOHX10000.50 in2:40 pm2:40 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 August 20, 2022

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 (Eastern Daylight Time) and by county: a report counts for Louisville when its coordinates fall inside one of the metro's 8 counties (the counties of Jefferson, KY, Oldham, KY, Bullitt, KY, Shelby, KY, Spencer, KY, Clark, IN, Floyd, IN and Harrison, IN). 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.