Alert archive / Oklahoma / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 142
The Storm Prediction Center issued this severe thunderstorm watch at Apr 23, 2002, 2:30 AM CDT for 9 counties in Kansas; 28 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2002, 2:30 AM CDT (07:30 UTC)
- Expired
- Apr 23, 2002, 8:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Chautauqua County, KS, Cowley County, KS, Elk County, KS, Harper County, KS, Kingman County, KS, Montgomery County, KS, Reno County, KS, Sedgwick County, KS, Sumner County, KS, Adair County, OK, Alfalfa County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Grant County, OK, Haskell County, OK, Kay County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Wichita radar (KICT), 95 km from the middle of the area, began a volume at 07:33 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 2:41 AM CDT | Severe Thunderstorm Warning | OUN | Grant, Kay | 49 min |
| 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, 3:23 AM CDT | Severe Thunderstorm Warning | OUN | Kay | 37 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, 4:51 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 39 min |
| Apr 23, 5:52 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 38 min |
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 7.5 hours before the alert went out and 60 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
- 2841 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 343 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Severe Thunderstorm Watches in Oklahoma, 2002Severe Thunderstorm Watches in Kansas, 2002Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.