Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 65, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 23, 2002, 4:51 AM CDT for Delaware County, Oklahoma. It was in force for 39 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 23, 2002, 4:51 AM CDT (09:51 UTC)
- Expired
- Apr 23, 2002, 5:30 AM CDT
- In force
- 39 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
County Delaware County, OK
The radar
The Tulsa radar (KINX), 66 km from the middle of the area, began a volume at 09:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 23, 5:11 AM CDT | Hail 0.75 | Leach, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 23, 2:30 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 9.9 hours before the alert went out and 113 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2397 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
129 WUUS54 KTSA 230951 SVRTUL OKC041-231030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 450 AM CDT TUE APR 23 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... DELAWARE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 530 AM CDT * AT 450 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTH OF LEACH...MOVING EAST AT 40 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...JAY...LEACH... TWIN OAKS...KANSAS...COLCORD AND CHLOETA. DIME SIZE HAIL WAS REPORTED WITH THIS STORM IN LOCUST GROVE. HAIL TO THE SIZE OF DIMES CAN BE EXPECTED IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 3645 9502 3619 9509 3620 9458 3649 9461
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 2:43 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 47 min |
| Apr 23, 2:56 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes | 34 min |
| Apr 23, 3:12 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 63 min |
| Apr 23, 3:37 AM CDT | Severe Thunderstorm Warning | TSA | Rogers, Washington | 38 min |
| Apr 23, 3:45 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Mayes | 45 min |
| Apr 23, 4:09 AM CDT | Severe Thunderstorm Warning | TSA | Rogers, Washington | 51 min |
| Apr 23, 4:50 AM CDT | Severe Thunderstorm Warning | TSA | Adair | 40 min |
| Apr 23, 5:52 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 38 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.