Hail in Tulsa on Friday, April 9, 2021
The Storm Prediction Center logged 5 hail reports in Tulsa on Friday, April 9, 2021, between 4:30 pm and 7:28 pm CDT, in 3 of the metro's 7 counties. The largest was 1.75 inches at 3 NNE Cleveland (Osage County) at 4:39 pm. NOAA radar flagged 2,235 hail signatures inside the metro that day: 893 rated a 100% chance of hail and 638 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 3 places in Creek, Osage and Rogers counties, named as the National Weather Service described them.
- Cleveland 3 reports, up to 1.75 in
- Bristow 1 report, up to 1.00 in
- Chelsea 1 report, up to 1.75 in
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.
| Time | Size | Place | County | NWS comment |
|---|---|---|---|---|
| 4:30 pm | 1.00 | 3 E Cleveland | Osage | (TSA) |
| 4:35 pm | 1.75 | 1 NNE Cleveland | Osage | PING PONG BALL TO GOLFBALL HAIL AT OK 99 AND THE ARKANSAS RIVER FROM SOCIAL MEDIA. (TSA) |
| 4:35 pm | 1.75 | 2 NW Chelsea | Rogers | (TSA) |
| 4:39 pm | 1.75 | 3 NNE Cleveland | Osage | CORRECTS PREVIOUS HAIL REPORT FROM 3 NNE CLEVELAND. (TSA) |
| 7:28 pm | 1.00 | 5 NE Bristow | Creek | (TSA) |
What NEXRAD radar recorded inside the metro
2,235 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; 893 were rated 100% and 50 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 |
|---|---|---|---|---|---|---|---|
| KTUL | 842 | 293 | 283 | 20 | 2.50 in | 1:14 pm | 8:52 pm |
| KVNX | 315 | 145 | 79 | 6 | 2.50 in | 3:26 pm | 8:07 pm |
| KTLX | 289 | 114 | 65 | 4 | 2.50 in | 1:19 pm | 8:39 pm |
| KINX | 274 | 113 | 74 | 6 | 2.75 in | 1:13 pm | 8:41 pm |
| KICT | 251 | 135 | 87 | 12 | 2.50 in | 4:19 pm | 8:03 pm |
| KSRX | 223 | 79 | 45 | 2 | 2.00 in | 1:22 pm | 8:38 pm |
| KSGF | 35 | 10 | 5 | 0 | 1.50 in | 3:50 pm | 8:33 pm |
| KTWX | 6 | 4 | 0 | 0 | 0.75 in | 5:55 pm | 6:41 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 Tulsa when its coordinates fall inside one of the metro's 7 counties (Tulsa, Wagoner, Rogers, Creek, Osage, Okmulgee and Pawnee 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.