Hail on Date

Hail in Oklahoma City on Friday, April 9, 2021

The Storm Prediction Center logged 15 hail reports in Oklahoma City on Friday, April 9, 2021, between 4:53 pm and 7:11 pm CDT, in 3 of the metro's 7 counties. The largest was 2.75 inches at 6 SE Chickasha (Grady County) at 5:45 pm. NOAA radar flagged 804 hail signatures inside the metro that day: 495 rated a 100% chance of hail and 376 with a maximum expected size of 1 inch or more.

15spotter hail reports in the metro
2.75 inlargest reported, 6 SE Chickasha
804radar hail signatures inside the metro, 495 rated 100%
2.75 inlargest expected size on radar
Map of Oklahoma City counties with 804 radar hail signatures and 15 spotter hail reports on April 9, 2021 Oklahoma Cleveland Canadian Logan McClain Grady Lincoln 2.75 in, 6 SE Chickasha
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 8 places in Grady, Lincoln and Oklahoma counties, named as the National Weather Service described them.

Every hail report logged that day

Times are Central 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
4:53 pm2.006 SW MincoGrady(OUN)
4:56 pm2.756 SW MincoGrady(OUN)
5:14 pm2.758 WSW AmberGrady(OUN)
5:19 pm2.001 W PocassetGradyNORTH SIDE WINDOWS BROKEN ON HOMES (OUN)
5:25 pm1.753 SW AmberGrady(OUN)
5:29 pm1.502 W ChickashaGrady(OUN)
5:34 pm1.751 S ChickashaGrady(OUN)
5:35 pm1.252 E ChickashaGrady(OUN)
5:43 pm2.503 E ChickashaGradyON HWY 19 (OUN)
5:45 pm2.756 SE ChickashaGrady(OUN)
5:52 pm1.255 ESE NinnekahGrady(OUN)
5:55 pm2.002 NW AlexGrady(OUN)
5:55 pm1.754 ENE NinnekahGrady(OUN)
6:12 pm1.75LutherOklahoma(OUN)
7:11 pm1.75S PragueLincoln(OUN)

What NEXRAD radar recorded inside the metro

804 signatures from 8 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; 495 were rated 100% and 48 had a maximum expected size of 2 inches or more.

RadarSignaturesRated 100%1 in or more2 in or moreLargest expectedFirstLast
KOKC29515713862.50 in4:06 pm7:27 pm
KVNX15611882132.75 in4:06 pm7:25 pm
KTLX1166953162.75 in3:57 pm7:24 pm
KINX79523652.25 in4:01 pm7:29 pm
KFDR63352032.00 in4:03 pm6:34 pm
KICT63493752.25 in4:19 pm6:59 pm
KSRX2212701.50 in5:43 pm7:11 pm
KTUL103301.75 in6:13 pm6:58 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 April 9, 2021

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 (Central Daylight Time) and by county: a report counts for Oklahoma City when its coordinates fall inside one of the metro's 7 counties (Oklahoma, Cleveland, Canadian, Logan, McClain, Grady and Lincoln 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.