Alert archive / Nebraska / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 675
The Storm Prediction Center issued this severe thunderstorm watch at Aug 17, 2001, 5:30 PM CDT for 18 counties in Iowa; 42 counties in Nebraska; Clay County, Union County, South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2001, 5:30 PM CDT (22:30 UTC)
- Expired
- Aug 17, 2001, 10:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 62 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Ida County, IA, Kossuth County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Sioux County, IA, Winnebago County, IA, Woodbury County, IA, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Dodge County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hitchcock County, NE, Howard County, NE, Kearney County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE, Clay County, SD, Union County, SD
The radar
The Grand Island radar (KUEX), 127 km from the middle of the area, began a volume at 22:31 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
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 5:30 PM CDT | Tornado Warning | FSD | Plymouth | 30 min |
| Aug 17, 5:37 PM CDT | Tornado Warning | FSD | Cherokee | 23 min |
| Aug 17, 5:43 PM CDT | Tornado Warning | FSD | Sioux | 32 min |
| Aug 17, 5:55 PM CDT | Tornado Warning | FSD | Cherokee, Plymouth | 50 min |
| Aug 17, 5:55 PM CDT | Tornado Warning | FSD | Woodbury | 35 min |
| Aug 17, 5:55 PM CDT | Severe Thunderstorm Warning | GID | Howard | 50 min |
| Aug 17, 6:15 PM CDT | Severe Thunderstorm Warning | GID | Hall | 45 min |
| Aug 17, 6:27 PM CDT | Tornado Warning | OAX | Monona | 48 min |
| Aug 17, 6:30 PM CDT | Tornado Warning | FSD | Woodbury | 15 min |
| Aug 17, 6:39 PM CDT | Tornado Warning | FSD | Ida, Woodbury | 51 min |
| Aug 17, 6:41 PM CDT | Severe Thunderstorm Warning | GID | Sherman | 49 min |
| Aug 17, 6:44 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 16 min |
| Aug 17, 7:14 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 31 min |
| Aug 17, 7:28 PM CDT | Tornado Warning | FSD | Ida, Woodbury | 32 min |
| Aug 17, 7:47 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 28 min |
| Aug 17, 7:51 PM CDT | Tornado Warning | OAX | Monona | 24 min |
| Aug 17, 8:14 PM CDT | Tornado Warning | OAX | Harrison, Monona | 31 min |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.5 hours before the alert went out and 145 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
- 1475 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Aug 17, 5:00 PM CDT | Severe Thunderstorm Watch | SPC | Brookings, Deuel, Grant, Minnehaha, Moody, Roberts | 5 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2001Severe Thunderstorm Watches in Iowa, 2001Severe Thunderstorm Watches in South Dakota, 2001Every severe thunderstorm watch in 2001
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.