Alert archive / Oklahoma / Severe Thunderstorm Watches in 1999
Severe Thunderstorm Watch 710
The Storm Prediction Center issued this severe thunderstorm watch at Nov 22, 1999, 2:00 PM CST for 12 counties in Kansas; 28 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 22, 1999, 2:00 PM CST (20:00 UTC)
- Expired
- Nov 22, 1999, 8:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Allen County, KS, Butler County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Montgomery County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Custer County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK, Washita County, OK
The radar
The Norman radar (KTLX), 88 km from the middle of the area, began a volume at 20:02 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 2:06 PM CST | Severe Thunderstorm Warning | ICT | Sumner | 24 min |
| Nov 22, 4:40 PM CST | Severe Thunderstorm Warning | ICT | Sumner | 35 min |
| Nov 22, 4:59 PM CST | Severe Thunderstorm Warning | ICT | Sedgwick | 31 min |
| Nov 22, 5:06 PM CST | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 24 min |
| Nov 22, 5:06 PM CST | Severe Thunderstorm Warning | OUN | Lincoln | 24 min |
| Nov 22, 5:34 PM CST | Severe Thunderstorm Warning | TSA | Creek, Osage, Tulsa | 41 min |
| Nov 22, 5:40 PM CST | Tornado Warning | TSA | Creek, Osage, Tulsa | 35 min |
| Nov 22, 6:20 PM CST | Severe Thunderstorm Warning | ICT | Greenwood | 40 min |
| Nov 22, 7:58 PM CST | Severe Thunderstorm Warning | TSA | Creek, Osage | 47 min |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 8.0 hours before the alert went out and 90 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
- 519 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 5:30 PM CST | Severe Thunderstorm Watch | SPC | Cherokee, Crawford, Labette | 6 hr |
Nearby
Severe Thunderstorm Watches in Oklahoma, 1999Severe Thunderstorm Watches in Kansas, 1999Every severe thunderstorm watch in 1999
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.