Alert archive / Nebraska / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 249

June 13, 20164 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 13, 2016, 12:45 PM MDT for 4 states. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Jun 13, 2016, 12:45 PM MDT (18:45 UTC)
Expired
Jun 13, 2016, 10:00 PM MDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 52 counties

Big Horn County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Prairie County, MT, Rosebud County, MT, Treasure County, MT, Wibaux County, MT, Arthur County, NE, Banner County, NE, Box Butte County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Kimball County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Thomas County, NE, Bennett County, SD, Butte County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Sheridan County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 172 km from the middle of the area, began a volume at 18:45 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
20%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 13, 1:05 PM MDTSevere Thunderstorm WarningUNRCampbell40 min
Jun 13, 1:28 PM MDTSevere Thunderstorm WarningCYSPlatte47 min
Jun 13, 2:10 PM MDTSevere Thunderstorm WarningCYSPlatte30 min
Jun 13, 2:43 PM MDTSevere Thunderstorm WarningUNRCrook18 min
Jun 13, 3:06 PM MDTSevere Thunderstorm WarningGGWWibaux24 min
Jun 13, 3:09 PM MDTSevere Thunderstorm WarningBYZRosebud66 min
Jun 13, 3:53 PM MDTSevere Thunderstorm WarningGGWPrairie, Wibaux67 min
Jun 13, 4:01 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington59 min
Jun 13, 4:26 PM MDTTornado WarningUNRCuster, Pennington17 min
Jun 13, 4:34 PM MDTSevere Thunderstorm WarningUNRCuster, Oglala Lakota, Pennington56 min
Jun 13, 4:41 PM MDTSevere Thunderstorm WarningUNRMeade, Pennington64 min
Jun 13, 5:07 PM MDTSevere Thunderstorm WarningGGWPrairie53 min
Jun 13, 5:14 PM MDTSevere Thunderstorm WarningUNRCuster, Haakon, Jackson, Meade, Mellette, Oglala Lakota and 1 more91 min
Jun 13, 5:58 PM MDTSevere Thunderstorm WarningLBFSheridan47 min
Jun 13, 6:06 PM MDTSevere Thunderstorm WarningUNRBennett, Jackson, Oglala Lakota39 min
Jun 13, 6:07 PM MDTSevere Thunderstorm WarningCYSConverse38 min
Jun 13, 6:09 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan51 min
Jun 13, 6:46 PM MDTSevere Thunderstorm WarningUNRBennett, Jackson, Mellette, Todd59 min
Jun 13, 7:02 PM MDTTornado WarningUNRBennett, Jackson, Mellette, Todd28 min
Jun 13, 7:12 PM MDTSevere Thunderstorm WarningCYSCheyenne, Morrill48 min
Jun 13, 7:30 PM MDTSevere Thunderstorm WarningLBFCherry45 min
Jun 13, 7:38 PM MDTSevere Thunderstorm WarningUNRBennett, Todd82 min
Jun 13, 7:48 PM MDTSevere Thunderstorm WarningCYSCheyenne, Morrill31 min
Jun 13, 8:08 PM MDTSevere Thunderstorm WarningLBFCherry52 min
Jun 13, 8:10 PM MDTSevere Thunderstorm WarningLBFCherry36 min
Jun 13, 8:17 PM MDTSevere Thunderstorm WarningLBFGarden, Sheridan43 min
Jun 13, 8:31 PM MDTSevere Thunderstorm WarningLBFDeuel, Garden44 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, 6.8 hours before the alert went out and 169 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.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 12:00Z on 2016-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 2016-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1496 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 13, 12:00 PM MDTMesoscale DiscussionSPCBig Horn, Powder River60 min
Jun 13, 1:37 PM MDTMesoscale DiscussionSPCDaniels, Dawson, Garfield, McCone, Richland, Roosevelt and 2 more53 min
Jun 13, 2:51 PM MDTMesoscale DiscussionSPCBig Horn, Carter, Custer, Fallon, Powder River, Rosebud and 2 more54 min
Jun 13, 3:40 PM MDTMesoscale DiscussionSPCDaniels, Dawson, Garfield, McCone, Richland, Roosevelt and 3 more95 min
Jun 13, 4:07 PM MDTSevere Thunderstorm WatchSPCDawson, Garfield, McCone, Prairie, Richland, Roosevelt and 2 more4 hr
Jun 13, 1:27 PM MDTTornado WatchSPCDundy8 hr
Jun 12, 7:21 PM MDTMesoscale DiscussionSPCCodington, Deuel, Grant84 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2016Severe Thunderstorm Watches in South Dakota, 2016Severe Thunderstorm Watches in Montana, 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.