Alert archive / Nebraska / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 197
The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2016, 8:59 PM MDT for 17 counties in Nebraska; 10 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 22, 2016, 8:59 PM MDT (02:59 UTC)
- Expired
- May 23, 2016, 2:00 AM MDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 27 counties
Arthur County, NE, Blaine County, NE, Brown County, NE, Chase County, NE, Cherry County, NE, Custer County, NE, Frontier County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Thomas County, NE, Bennett County, SD, Hughes County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD
The radar
The North Platte radar (KLNX), 42 km from the middle of the area, began a volume at 03:02 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
- 30%
- 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
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 9:15 PM MDT | Severe Thunderstorm Warning | LBF | Cherry, Keya Paha | 24 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.0 hours before the alert went out and 119 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
- 2431 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1498 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 18.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 6:33 PM MDT | Mesoscale Discussion | SPC | Antelope, Boone, Boyd, Cedar, Garfield, Greeley and 8 more | 87 min |
| May 22, 7:22 PM MDT | Severe Thunderstorm Watch | SPC | Antelope, Boyd, Garfield, Holt, Knox, Loup and 2 more | 7 hr |
| May 22, 8:26 PM MDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Cherry, Custer, Dawson and 11 more | 94 min |
| May 22, 9:19 PM MDT | Mesoscale Discussion | SPC | Dundy, Furnas, Hitchcock, Red Willow | 86 min |
| May 23, 12:13 AM MDT | Mesoscale Discussion | SPC | Adams, Antelope, Boone, Boyd, Buffalo, Cedar and 20 more | 92 min |
| May 23, 12:58 PM MDT | Mesoscale Discussion | SPC | Burt, Cass, Cedar, Colfax, Cuming, Dakota and 9 more | 92 min |
| May 23, 1:30 PM MDT | Mesoscale Discussion | SPC | Adams, Buffalo, Butler, Clay, Colfax, Fillmore and 18 more | 2 hr |
| May 22, 8:06 PM MDT | Mesoscale Discussion | SPC | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 7 more | 114 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.