Alert archive / Nebraska / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 458
The Storm Prediction Center issued this severe thunderstorm watch at Aug 19, 2017, 5:45 PM CDT for 21 counties in Kansas; 50 counties in Nebraska. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2017, 5:45 PM CDT (22:45 UTC)
- Expired
- Aug 20, 2017, 1:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 71 counties
Cheyenne County, KS, Decatur County, KS, Ellis County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Jewell County, KS, Logan County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Brown County, NE, Buffalo County, NE, Butler County, NE, Chase County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Perkins County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Rock County, NE, Seward County, NE, Sherman County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, York County, NE
The radar
The North Platte radar (KLNX), 88 km from the middle of the area, began a volume at 22:46 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 6:04 PM CDT | Tornado Warning | LBF | Loup, Rock | 41 min |
| Aug 19, 6:29 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Loup | 46 min |
| Aug 19, 7:14 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Loup, Rock | 46 min |
| Aug 19, 7:39 PM CDT | Tornado Warning | LBF | Loup | 51 min |
| Aug 19, 7:54 PM CDT | Flash Flood Warning | LBF | Blaine, Loup, Rock | 6 hr |
| Aug 19, 8:02 PM CDT | Tornado Warning | LBF | Loup | 43 min |
| Aug 19, 8:44 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 61 min |
| Aug 19, 8:48 PM CDT | Severe Thunderstorm Warning | LBF | Loup | 27 min |
| Aug 19, 9:01 PM CDT | Tornado Warning | LBF | Custer | 29 min |
| Aug 19, 9:20 PM CDT | Flash Flood Warning | LBF | Custer, Loup | 6 hr |
| Aug 19, 9:45 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 45 min |
| Aug 19, 9:52 PM CDT | Severe Thunderstorm Warning | GID | Buffalo, Dawson, Phelps | 23 min |
| Aug 19, 10:08 PM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison, Platte | 37 min |
| Aug 19, 10:57 PM CDT | Severe Thunderstorm Warning | GID | Buffalo, Kearney | 48 min |
| Aug 19, 11:27 PM CDT | Severe Thunderstorm Warning | GID | Hamilton, Merrick, Polk | 48 min |
| Aug 19, 11:36 PM CDT | Severe Thunderstorm Warning | GID | Greeley, Howard, Merrick, Nance | 24 min |
| Aug 19, 11:59 PM CDT | Severe Thunderstorm Warning | GID | Polk, York | 31 min |
| Aug 20, 12:58 AM CDT | Severe Thunderstorm Warning | GID | Fillmore | 17 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 2:31 PM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Butler, Chase, Chautauqua, Cherokee and 13 more | 119 min |
| Aug 19, 4:51 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Norton, Rawlins | 84 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2017Severe Thunderstorm Watches in Kansas, 2017Every severe thunderstorm watch in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.