Alert archive / Nebraska / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 444
The Storm Prediction Center issued this severe thunderstorm watch at Aug 11, 2016, 5:29 PM MDT for 19 counties in Nebraska; 8 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2016, 5:29 PM MDT (23:29 UTC)
- Expired
- Aug 12, 2016, 12:00 AM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 55 kt
All 27 counties
Arthur County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Garden County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE, Valley County, NE, Bennett County, SD, Gregory County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Todd County, SD, Tripp County, SD
The radar
The North Platte radar (KLNX), 123 km from the middle of the area, began a volume at 23:30 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
- 20%
- 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 5:31 PM MDT | Severe Thunderstorm Warning | LBF | Logan | 29 min |
| Aug 11, 5:52 PM MDT | Severe Thunderstorm Warning | UNR | Jackson, Oglala Lakota | 40 min |
| Aug 11, 6:25 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 50 min |
| Aug 11, 6:38 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 52 min |
| Aug 11, 6:41 PM MDT | Severe Thunderstorm Warning | UNR | Bennett | 49 min |
| Aug 11, 7:00 PM MDT | Severe Thunderstorm Warning | LBF | Cherry | 45 min |
| Aug 11, 11:29 PM MDT | Severe Thunderstorm Warning | LBF | Custer, Frontier, Hayes, Lincoln | 46 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, 11.5 hours before the alert went out and 195 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
- 1152 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 995 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -92 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:37 AM MDT | Mesoscale Discussion | SPC | Antelope, Boone, Boyd, Burt, Cedar, Cuming and 12 more | 2 hr |
| Aug 11, 1:35 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Garden, Kimball and 4 more | 2 hr |
| Aug 11, 2:26 PM MDT | Mesoscale Discussion | SPC | Antelope, Boone, Burt, Butler, Cass, Cedar and 24 more | 2 hr |
| Aug 11, 2:55 PM MDT | Severe Thunderstorm Watch | SPC | Antelope, Boone, Burt, Butler, Cass, Cedar and 24 more | 7 hr |
| Aug 11, 4:31 PM MDT | Mesoscale Discussion | SPC | Blaine, Brown, Lincoln, Logan, Loup, McPherson and 2 more | 89 min |
| Aug 11, 4:56 PM MDT | Mesoscale Discussion | SPC | Box Butte, Cherry, Garden, Grant, Morrill, Sheridan | 94 min |
| Aug 11, 5:17 PM MDT | Mesoscale Discussion | SPC | Burt, Butler, Cass, Cedar, Colfax, Cuming and 24 more | 58 min |
| Aug 10, 7:00 PM MDT | Severe Thunderstorm Watch | SPC | Beadle, Brookings, Brown, Brule, Buffalo, Campbell and 25 more | 6 hr |
| Aug 10, 9:50 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 18 more | 85 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2016Severe Thunderstorm Watches in South Dakota, 2016Every severe thunderstorm watch in 2016
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.