Alert archive / Nebraska / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 477
The Storm Prediction Center issued this severe thunderstorm watch at Sep 15, 2016, 4:21 PM MDT for Kit Carson County, Yuma County, Colorado; 16 counties in Kansas; 25 counties in Nebraska. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 15, 2016, 4:21 PM MDT (22:21 UTC)
- Expired
- Sep 16, 2016, 12:00 AM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 43 counties
Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham 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, Adams County, NE, Buffalo County, NE, Chase County, NE, Clay County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Sherman County, NE, Webster County, NE
The radar
The Goodland radar (KGLD), 126 km from the middle of the area, began a volume at 22:21 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
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 4:44 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 61 min |
| Sep 15, 5:21 PM MDT | Severe Thunderstorm Warning | GLD | Rawlins | 39 min |
| Sep 15, 5:32 PM MDT | Severe Thunderstorm Warning | GLD | Decatur, Rawlins | 43 min |
| Sep 15, 5:32 PM MDT | Severe Thunderstorm Warning | GID | Phelps | 28 min |
| Sep 15, 5:35 PM MDT | Severe Thunderstorm Warning | GLD | Sherman, Thomas | 55 min |
| Sep 15, 6:00 PM MDT | Severe Thunderstorm Warning | GLD | Decatur, Sheridan, Thomas | 45 min |
| Sep 15, 6:13 PM MDT | Severe Thunderstorm Warning | GLD | Sheridan, Sherman, Thomas | 47 min |
| Sep 15, 6:27 PM MDT | Severe Thunderstorm Warning | LBF | Frontier, Hayes | 48 min |
| Sep 15, 6:43 PM MDT | Severe Thunderstorm Warning | GLD | Decatur, Graham, Norton, Sheridan | 44 min |
| Sep 15, 6:55 PM MDT | Severe Thunderstorm Warning | GLD | Sheridan, Thomas | 50 min |
| Sep 15, 7:11 PM MDT | Severe Thunderstorm Warning | GID | Buffalo, Dawson | 49 min |
| Sep 15, 7:14 PM MDT | Severe Thunderstorm Warning | LBF | Frontier | 61 min |
| Sep 15, 7:34 PM MDT | Severe Thunderstorm Warning | GID | Franklin, Furnas, Harlan | 41 min |
| Sep 15, 7:35 PM MDT | Severe Thunderstorm Warning | GLD | Decatur, Graham, Norton, Sheridan | 55 min |
| Sep 15, 7:37 PM MDT | Severe Thunderstorm Warning | GID | Buffalo, Dawson | 23 min |
| Sep 15, 7:56 PM MDT | Severe Thunderstorm Warning | GID | Buffalo | 49 min |
| Sep 15, 7:59 PM MDT | Severe Thunderstorm Warning | GID | Dawson | 31 min |
| Sep 15, 8:04 PM MDT | Severe Thunderstorm Warning | GID | Jewell, Smith | 41 min |
| Sep 15, 8:08 PM MDT | Flash Flood Warning | GLD | Decatur, Graham, Norton, Sheridan | 3 hr |
| Sep 15, 8:23 PM MDT | Severe Thunderstorm Warning | GID | Phillips, Rooks | 37 min |
| Sep 15, 8:30 PM MDT | Severe Thunderstorm Warning | GID | Nance | 19 min |
| Sep 15, 8:45 PM MDT | Severe Thunderstorm Warning | GID | Adams, Clay, Franklin, Nuckolls, Webster | 45 min |
| Sep 15, 9:39 PM MDT | Flash Flood Warning | GID | Buffalo, Hall, Howard, Merrick, Nance, Sherman | 6 hr |
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 12:00Z, 10.4 hours before the alert went out and 95 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
- 419 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 2:04 PM MDT | Mesoscale Discussion | SPC | Kit Carson, Logan, Morgan, Phillips, Sedgwick, Washington and 1 more | 2 hr |
| Sep 15, 12:58 PM MDT | Mesoscale Discussion | SPC | Cedar, Dakota, Dixon, Thurston, Wayne | 3 hr |
| Sep 15, 2:51 PM MDT | Mesoscale Discussion | SPC | Burt, Cuming, Dakota, Dodge, Douglas, Sarpy and 3 more | 114 min |
| Sep 15, 3:38 PM MDT | Severe Thunderstorm Watch | SPC | Burt, Butler, Colfax, Cuming, Dakota, Dodge and 7 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2016Severe Thunderstorm Watches in Kansas, 2016Severe Thunderstorm Watches in Colorado, 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.