Alert archive / South Dakota / Tornado Watches in 2014
Tornado Watch 311
The Storm Prediction Center issued this tornado watch at Jun 17, 2014, 12:31 PM MDT for 9 counties in Montana; 6 counties in North Dakota; 9 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2014, 12:31 PM MDT (18:31 UTC)
- Expired
- Jun 17, 2014, 8:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 24 counties
Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Golden Valley County, ND, McKenzie County, ND, Slope County, ND, Bennett County, SD, Butte County, SD, Custer County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 60%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 20%
- 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
- 50%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 1:02 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 43 min |
| Jun 17, 1:07 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Wibaux | 53 min |
| Jun 17, 1:26 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie | 64 min |
| Jun 17, 1:41 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 64 min |
| Jun 17, 1:51 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Wibaux | 54 min |
| Jun 17, 2:15 PM MDT | Tornado Warning | BYZ | Carter | 45 min |
| Jun 17, 2:17 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie | 58 min |
| Jun 17, 2:21 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 54 min |
| Jun 17, 2:23 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 52 min |
| Jun 17, 2:35 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 55 min |
| Jun 17, 2:44 PM MDT | Tornado Warning | BYZ | Fallon | 61 min |
| Jun 17, 2:59 PM MDT | Tornado Warning | BYZ | Carter | 46 min |
| Jun 17, 3:01 PM MDT | Flash Flood Warning | BYZ | Fallon | 6 hr |
| Jun 17, 3:38 PM MDT | Flash Flood Warning | GGW | Dawson, Prairie | 4 hr |
| Jun 17, 3:45 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 45 min |
| Jun 17, 3:53 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 67 min |
| Jun 17, 4:00 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 30 min |
| Jun 17, 4:01 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 44 min |
| Jun 17, 4:01 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 59 min |
| Jun 17, 4:12 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Wibaux | 63 min |
| Jun 17, 4:26 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 79 min |
| Jun 17, 4:31 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 29 min |
| Jun 17, 4:42 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 33 min |
| Jun 17, 5:16 PM MDT | Tornado Warning | UNR | Butte, Harding | 59 min |
| Jun 17, 5:56 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 64 min |
| Jun 17, 6:12 PM MDT | Tornado Warning | UNR | Butte | 48 min |
| Jun 17, 6:14 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 61 min |
| Jun 17, 6:57 PM MDT | Severe Thunderstorm Warning | UNR | Butte | 63 min |
| Jun 17, 7:10 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 65 min |
| Jun 17, 7:53 PM MDT | Severe Thunderstorm Warning | UNR | Butte | 97 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
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 6.5 hours before the alert went out and 261 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
- 1178 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 170 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 |
|---|---|---|---|---|
| Jun 16, 6:49 PM MDT | Mesoscale Discussion | SPC | Dawson, Richland | 86 min |
| Jun 17, 5:04 AM MDT | Mesoscale Discussion | SPC | Garfield, Prairie | 86 min |
| Jun 17, 11:40 AM MDT | Mesoscale Discussion | SPC | Carter, Custer, Dawson, Fallon, Garfield, Powder River and 2 more | 2 hr |
| Jun 17, 2:22 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Dawson, Fallon, McCone, Prairie and 2 more | 113 min |
| Jun 16, 6:47 PM MDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Davison, Douglas, Gregory, Hanson and 8 more | 58 min |
| Jun 16, 7:37 PM MDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Davison, Douglas, Gregory, Hanson and 8 more | 83 min |
| Jun 16, 8:56 PM MDT | Severe Thunderstorm Watch | SPC | Union | 5 hr |
| Jun 16, 10:11 PM MDT | Mesoscale Discussion | SPC | Union | 64 min |
| Jun 17, 3:53 PM MDT | Tornado Watch | SPC | Mellette, Todd, Tripp | 6 hr |
| Jun 17, 4:12 PM MDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Davison, Douglas, Hanson and 7 more | 2 hr |
| Jun 17, 5:02 PM MDT | Mesoscale Discussion | SPC | Bennett, Butte, Harding, Jackson, Meade, Oglala Lakota and 1 more | 88 min |
| Jun 17, 5:48 PM MDT | Tornado Watch | SPC | Bon Homme, Clay, Hanson, Hutchinson, Lake, Lincoln and 7 more | 6 hr |
Nearby
Tornado Watches in South Dakota, 2014Tornado Watches in Montana, 2014Tornado Watches in North Dakota, 2014Every tornado 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.