Alert archive / South Dakota / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 240
The Storm Prediction Center issued this severe thunderstorm watch at May 7, 2000, 8:00 PM CDT for 12 counties in Nebraska; 23 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 7, 2000, 8:00 PM CDT (01:00 UTC)
- Expired
- May 8, 2000, 2:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Blaine County, NE, Boyd County, NE, Brown County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Rock County, NE, Thomas County, NE, Aurora County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Sanborn County, SD, Turner County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 109 km from the middle of the area, began a volume at 01:02 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 8:06 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 39 min |
| May 7, 8:15 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 60 min |
| May 7, 8:28 PM CDT | Severe Thunderstorm Warning | LBF | Hooker, Thomas | 62 min |
| May 7, 8:37 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Keya Paha, Rock | 23 min |
| May 7, 8:49 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Loup | 56 min |
| May 7, 8:57 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 48 min |
| May 7, 9:06 PM CDT | Severe Thunderstorm Warning | LBF | Keith, Lincoln | 54 min |
| May 7, 9:59 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Lincoln | 61 min |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.0 hours before the alert went out and 187 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
- 1647 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 976 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.7
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 |
|---|---|---|---|---|
| May 7, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Antelope, Boone, Buffalo, Burt, Cedar and 35 more | 5 hr |
| May 8, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Burt, Butler, Cass, Dodge, Douglas, Lancaster and 6 more | 5 hr |
Nearby
Severe Thunderstorm Watches in South Dakota, 2000Severe Thunderstorm Watches in Nebraska, 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.