Alert archive / Nebraska / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 717
The Storm Prediction Center issued this severe thunderstorm watch at Sep 7, 2001, 4:45 PM CDT for 8 counties in Iowa; 21 counties in Kansas; 29 counties in Nebraska. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 7, 2001, 4:45 PM CDT (21:45 UTC)
- Expired
- Sep 7, 2001, 8:00 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 58 counties
Audubon County, IA, Cass County, IA, Fremont County, IA, Harrison County, IA, Mills County, IA, Montgomery County, IA, Pottawattamie County, IA, Shelby County, IA, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellis County, KS, Ellsworth County, KS, Geary County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Washington County, KS, Adams County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Washington County, NE, Webster County, NE, York County, NE
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 4:53 PM CDT | Severe Thunderstorm Warning | TOP | Cloud, Republic | 67 min |
| Sep 7, 4:53 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster, Seward | 52 min |
| Sep 7, 4:54 PM CDT | Severe Thunderstorm Warning | ICT | Russell | 66 min |
| Sep 7, 5:01 PM CDT | Tornado Warning | TOP | Dickinson | 44 min |
| Sep 7, 5:08 PM CDT | Severe Thunderstorm Warning | GID | Jewell | 52 min |
| Sep 7, 5:12 PM CDT | Tornado Warning | OAX | Saline | 33 min |
| Sep 7, 5:13 PM CDT | Tornado Warning | TOP | Clay, Geary | 32 min |
| Sep 7, 5:19 PM CDT | Severe Thunderstorm Warning | ICT | Lincoln | 71 min |
| Sep 7, 5:26 PM CDT | Severe Thunderstorm Warning | ICT | Saline | 64 min |
| Sep 7, 5:29 PM CDT | Severe Thunderstorm Warning | GID | Mitchell | 61 min |
| Sep 7, 5:31 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Lancaster | 59 min |
| Sep 7, 5:35 PM CDT | Severe Thunderstorm Warning | OAX | Pawnee | 40 min |
| Sep 7, 5:41 PM CDT | Tornado Warning | TOP | Geary, Riley | 34 min |
| Sep 7, 5:44 PM CDT | Tornado Warning | TOP | Dickinson | 46 min |
| Sep 7, 5:56 PM CDT | Severe Thunderstorm Warning | TOP | Republic | 49 min |
| Sep 7, 6:15 PM CDT | Tornado Warning | TOP | Pottawatomie, Riley | 30 min |
| Sep 7, 6:31 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson | 44 min |
| Sep 7, 6:38 PM CDT | Flash Flood Warning | OAX | Pawnee | 6 hr |
| Sep 7, 6:46 PM CDT | Severe Thunderstorm Warning | TOP | Washington | 14 min |
| Sep 7, 6:53 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 52 min |
| Sep 7, 6:59 PM CDT | Tornado Warning | OAX | Gage | 46 min |
| Sep 7, 7:11 PM CDT | Flash Flood Warning | OAX | Jefferson | 64 min |
| Sep 7, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Cass | 43 min |
| Sep 7, 7:59 PM CDT | Severe Thunderstorm Warning | ICT | Ellsworth | 46 min |
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 9.8 hours before the alert went out and 212 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
- 1545 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 658 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 4.1
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 |
|---|---|---|---|---|
| Sep 7, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Dickinson, Lyon, Monona, O'Brien, Osceola and 3 more | 6 hr |
| Sep 7, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Appanoose, Benton, Black Hawk and 45 more | 5 hr |
| Sep 7, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Dubuque, Jackson, Johnson, Jones and 1 more | 6 hr |
| Sep 7, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Chase, Clay, Dickinson, Doniphan and 18 more | 6 hr |
| Sep 7, 3:15 PM CDT | Tornado Watch | SPC | Butler, Chautauqua, Cowley, Elk, Greenwood, Harper and 5 more | 6 hr |
| Sep 7, 6:00 PM CDT | Tornado Watch | SPC | Atchison, Brown, Chase, Doniphan, Douglas, Franklin and 16 more | 5 hr |
| Sep 6, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Blaine, Boyd, Buffalo, Custer, Dawson and 16 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2001Severe Thunderstorm Watches in Kansas, 2001Severe Thunderstorm Watches in Iowa, 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.