Alert archive / Nebraska / Tornado Watches in 2019
Tornado Watch 640
The Storm Prediction Center issued this tornado watch at Sep 10, 2019, 2:53 PM CDT for 15 counties in Nebraska; 8 counties in South Dakota; 7 counties in Wyoming. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 10, 2019, 2:53 PM CDT (19:53 UTC)
- Expired
- Sep 10, 2019, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 30 counties
Blaine County, NE, Box Butte County, NE, Brown County, NE, Cherry County, NE, Dawes County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Keya Paha County, NE, Morrill County, NE, Rock County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Thomas County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Jackson County, SD, Mellette County, SD, Oglala Lakota County, SD, Todd County, SD, Tripp County, SD, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 108 km from the middle of the area, began a volume at 19:52 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
33 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 2:59 PM CDT | Severe Thunderstorm Warning | CYS | Converse, Goshen, Niobrara, Platte | 31 min |
| Sep 10, 3:13 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 47 min |
| Sep 10, 3:30 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 45 min |
| Sep 10, 3:59 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Todd | 46 min |
| Sep 10, 4:01 PM CDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 29 min |
| Sep 10, 4:08 PM CDT | Tornado Warning | CYS | Goshen, Platte | 37 min |
| Sep 10, 4:24 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 66 min |
| Sep 10, 4:37 PM CDT | Tornado Warning | CYS | Goshen | 23 min |
| Sep 10, 4:41 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 49 min |
| Sep 10, 5:00 PM CDT | Severe Thunderstorm Warning | CYS | Goshen | 45 min |
| Sep 10, 5:05 PM CDT | Severe Thunderstorm Warning | UNR | Campbell | 55 min |
| Sep 10, 5:12 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 38 min |
| Sep 10, 5:17 PM CDT | Tornado Warning | CYS | Goshen | 28 min |
| Sep 10, 5:21 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 39 min |
| Sep 10, 5:31 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 44 min |
| Sep 10, 5:36 PM CDT | Tornado Warning | CYS | Sioux | 39 min |
| Sep 10, 5:37 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 38 min |
| Sep 10, 5:48 PM CDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 42 min |
| Sep 10, 5:53 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 52 min |
| Sep 10, 5:58 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Cherry, Keya Paha | 62 min |
| Sep 10, 5:58 PM CDT | Tornado Warning | CYS | Goshen, Platte | 32 min |
| Sep 10, 6:15 PM CDT | Severe Thunderstorm Warning | CYS | Sioux | 16 min |
| Sep 10, 6:24 PM CDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 66 min |
| Sep 10, 6:24 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 26 min |
| Sep 10, 6:33 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 42 min |
| Sep 10, 6:34 PM CDT | Severe Thunderstorm Warning | UNR | Todd, Tripp | 41 min |
| Sep 10, 6:35 PM CDT | Flash Flood Warning | CYS | Goshen | 100 min |
| Sep 10, 6:41 PM CDT | Tornado Warning | CYS | Goshen | 19 min |
| Sep 10, 6:56 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Cherry, Keya Paha, Rock | 64 min |
| Sep 10, 6:59 PM CDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Scotts Bluff, Sioux | 46 min |
| Sep 10, 6:59 PM CDT | Tornado Warning | CYS | Banner, Scotts Bluff | 31 min |
| Sep 10, 8:03 PM CDT | Severe Thunderstorm Warning | CYS | Box Butte | 30 min |
| Sep 10, 9:58 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 47 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 (KUNR), launched 12:00Z, 7.9 hours before the alert went out and 101 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1302 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 1:51 PM CDT | Mesoscale Discussion | SPC | Banner, Kimball, Scotts Bluff, Sioux | 114 min |
| Sep 10, 2:25 PM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Cherry, Garden, Grant and 8 more | 2 hr |
| Sep 10, 5:38 PM CDT | Mesoscale Discussion | SPC | Box Butte, Cherry, Dawes, Keya Paha, Sheridan, Sioux | 97 min |
| Sep 10, 6:25 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Brule, Charles Mix, Davison, Douglas, Gregory | 4 hr |
| Sep 10, 1:14 PM CDT | Mesoscale Discussion | SPC | Lincoln, Sublette, Sweetwater, Uinta | 2 hr |
Nearby
Tornado Watches in Nebraska, 2019Tornado Watches in South Dakota, 2019Tornado Watches in Wyoming, 2019Every tornado watch in 2019
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.