Alert archive / Nebraska / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 462
The Storm Prediction Center issued this severe thunderstorm watch at Aug 17, 2014, 2:21 PM CDT for 40 counties in Nebraska; 14 counties in South Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2014, 2:21 PM CDT (19:21 UTC)
- Expired
- Aug 17, 2014, 10:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 54 counties
Adams County, NE, Blaine County, NE, Brown County, NE, Buffalo County, NE, Cherry County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Rock County, NE, Sheridan County, NE, Sherman County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, York County, NE, Bennett County, SD, Butte County, SD, Custer County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD
The radar
The Rapid City radar (KUDX), 78 km from the middle of the area, began a volume at 19:22 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
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
41 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:30 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Todd | 37 min |
| Aug 17, 2:36 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 24 min |
| Aug 17, 2:46 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 59 min |
| Aug 17, 2:58 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 47 min |
| Aug 17, 3:02 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 43 min |
| Aug 17, 3:40 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 50 min |
| Aug 17, 3:43 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 47 min |
| Aug 17, 3:48 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 57 min |
| Aug 17, 4:03 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 57 min |
| Aug 17, 4:14 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 46 min |
| Aug 17, 4:15 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 60 min |
| Aug 17, 4:26 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 36 min |
| Aug 17, 4:29 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 61 min |
| Aug 17, 4:41 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Cherry, Custer, Logan, Thomas | 49 min |
| Aug 17, 4:41 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 45 min |
| Aug 17, 4:57 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 63 min |
| Aug 17, 5:06 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 54 min |
| Aug 17, 5:15 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 60 min |
| Aug 17, 5:23 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 18 min |
| Aug 17, 5:28 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Cherry, Custer, Logan, Loup and 1 more | 47 min |
| Aug 17, 5:40 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins | 65 min |
| Aug 17, 5:48 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Meade, Perkins | 57 min |
| Aug 17, 5:48 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 42 min |
| Aug 17, 6:00 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Loup | 45 min |
| Aug 17, 6:20 PM CDT | Severe Thunderstorm Warning | UNR | 55 min | |
| Aug 17, 6:24 PM CDT | Severe Thunderstorm Warning | GID | Greeley, Sherman, Valley | 51 min |
| Aug 17, 6:39 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Garfield, Loup, Wheeler | 51 min |
| Aug 17, 6:40 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins | 65 min |
| Aug 17, 6:42 PM CDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 33 min |
| Aug 17, 7:02 PM CDT | Severe Thunderstorm Warning | UNR | 41 min | |
| Aug 17, 7:10 PM CDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 50 min |
| Aug 17, 7:14 PM CDT | Severe Thunderstorm Warning | GID | Greeley, Howard, Sherman, Valley | 46 min |
| Aug 17, 7:29 PM CDT | Severe Thunderstorm Warning | LBF | Garfield, Wheeler | 34 min |
| Aug 17, 7:35 PM CDT | Severe Thunderstorm Warning | GID | Buffalo, Hall, Howard, Sherman | 40 min |
| Aug 17, 7:46 PM CDT | Severe Thunderstorm Warning | GID | Buffalo, Dawson | 44 min |
| Aug 17, 8:05 PM CDT | Severe Thunderstorm Warning | GID | Adams, Buffalo, Gosper, Hall, Kearney, Phelps | 55 min |
| Aug 17, 8:16 PM CDT | Severe Thunderstorm Warning | GID | Buffalo, Hall | 44 min |
| Aug 17, 8:36 PM CDT | Severe Thunderstorm Warning | GID | Adams, Clay, Franklin, Furnas, Hamilton, Harlan and 3 more | 54 min |
| Aug 17, 9:01 PM CDT | Severe Thunderstorm Warning | GID | Adams, Kearney | 29 min |
| Aug 17, 9:13 PM CDT | Severe Thunderstorm Warning | GID | Clay, Fillmore, Nuckolls, Thayer | 62 min |
| Aug 17, 9:30 PM CDT | Severe Thunderstorm Warning | GID | Nuckolls, Thayer | 45 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Rapid City, SD (KRAP), launched 12:00Z, 7.4 hours before the alert went out and 79 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
- 1066 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 1:56 PM CDT | Mesoscale Discussion | SPC | Blaine, Brown, Cherry, Custer, Grant, Hooker and 4 more | 64 min |
| Aug 17, 5:09 PM CDT | Mesoscale Discussion | SPC | Adams, Blaine, Boone, Brown, Buffalo, Cherry and 23 more | 96 min |
| Aug 17, 6:43 PM CDT | Mesoscale Discussion | SPC | Adams, Arthur, Blaine, Boone, Buffalo, Butler and 28 more | 62 min |
| Aug 17, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | Campbell, Corson, Walworth | 6 hr |
| Aug 17, 6:39 PM CDT | Mesoscale Discussion | SPC | Campbell, Corson | 66 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2014Severe Thunderstorm Watches in South Dakota, 2014Every severe thunderstorm watch in 2014
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.