Alert archive / Oklahoma / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 209
The Storm Prediction Center issued this severe thunderstorm watch at Apr 27, 2000, 12:15 AM CDT for 9 counties in Kansas; 22 counties in Oklahoma; 8 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2000, 12:15 AM CDT (05:15 UTC)
- Expired
- Apr 27, 2000, 6:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Barber County, KS, Clark County, KS, Comanche County, KS, Harper County, KS, Haskell County, KS, Kingman County, KS, Kiowa County, KS, Meade County, KS, Seward County, KS, Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Collingsworth County, TX, Donley County, TX, Gray County, TX, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX
The radar
The Vance AFB radar (KVNX), 87 km from the middle of the area, began a volume at 05:16 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 12:15 AM CDT | Severe Thunderstorm Warning | OUN | Ellis | 45 min |
| Apr 27, 12:42 AM CDT | Severe Thunderstorm Warning | AMA | Beaver | 48 min |
| Apr 27, 12:54 AM CDT | Severe Thunderstorm Warning | OUN | Grant | 51 min |
| Apr 27, 1:02 AM CDT | Severe Thunderstorm Warning | OUN | Dewey, Ellis | 43 min |
| Apr 27, 1:14 AM CDT | Severe Thunderstorm Warning | DDC | Meade | 31 min |
| Apr 27, 1:30 AM CDT | Severe Thunderstorm Warning | AMA | Beaver | 60 min |
| Apr 27, 1:38 AM CDT | Severe Thunderstorm Warning | DDC | Seward | 37 min |
| Apr 27, 1:47 AM CDT | Severe Thunderstorm Warning | OUN | Custer | 43 min |
| Apr 27, 2:14 AM CDT | Flash Flood Warning | OUN | Ellis | 3 hr |
| Apr 27, 3:47 AM CDT | Severe Thunderstorm Warning | OUN | Ellis | 28 min |
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 5.3 hours before the alert went out and 140 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
- 1815 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Apr 27, 2:00 AM CDT | Severe Thunderstorm Watch | SPC | Cleveland, Creek, Garvin, Hughes, Latimer, Lincoln and 19 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2000Severe Thunderstorm Watches in Kansas, 2000Severe Thunderstorm Watches in Texas, 2000Every severe thunderstorm watch in 2000
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.