Alert archive / Nebraska / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 355

June 25, 20144 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2014, 1:50 PM MDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 25, 2014, 1:50 PM MDT (19:50 UTC)
Expired
Jun 25, 2014, 9:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 36 counties

Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Rosebud County, MT, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Garden County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Ziebach County, SD, Albany County, WY, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Johnson County, WY, Laramie County, WY, Natrona County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 201 km from the middle of the area, began a volume at 19:53 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
30%
Six or more combined severe hail and wind reports
50%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 25, 2:00 PM MDTTornado WarningCYSLaramie30 min
Jun 25, 2:44 PM MDTSevere Thunderstorm WarningRIWJohnson, Natrona46 min
Jun 25, 2:45 PM MDTSevere Thunderstorm WarningCYSAlbany, Laramie, Platte45 min
Jun 25, 2:55 PM MDTSevere Thunderstorm WarningUNRMeade65 min
Jun 25, 3:14 PM MDTSevere Thunderstorm WarningUNRCampbell36 min
Jun 25, 3:33 PM MDTSevere Thunderstorm WarningUNRMeade, Pennington42 min
Jun 25, 3:38 PM MDTSevere Thunderstorm WarningUNRCampbell, Crook67 min
Jun 25, 3:41 PM MDTSevere Thunderstorm WarningBYZCarter, Powder River64 min
Jun 25, 3:44 PM MDTSevere Thunderstorm WarningBYZCarter, Powder River61 min
Jun 25, 3:51 PM MDTSevere Thunderstorm WarningCYSKimball39 min
Jun 25, 4:12 PM MDTSevere Thunderstorm WarningUNRCampbell, Crook, Weston63 min
Jun 25, 4:33 PM MDTSevere Thunderstorm WarningCYSSioux42 min
Jun 25, 4:34 PM MDTSevere Thunderstorm WarningUNRHaakon56 min
Jun 25, 4:43 PM MDTSevere Thunderstorm WarningUNRCrook62 min
Jun 25, 4:44 PM MDTSevere Thunderstorm WarningBYZCarter31 min
Jun 25, 5:04 PM MDTSevere Thunderstorm WarningCYSSioux41 min
Jun 25, 5:04 PM MDTSevere Thunderstorm WarningUNRHaakon, Ziebach41 min
Jun 25, 5:17 PM MDTSevere Thunderstorm WarningUNRCrook58 min
Jun 25, 5:27 PM MDTSevere Thunderstorm WarningUNRCrook, Weston44 min
Jun 25, 5:28 PM MDTSevere Thunderstorm WarningCYSDawes, Sioux47 min
Jun 25, 5:28 PM MDTSevere Thunderstorm WarningUNRHaakon26 min
Jun 25, 5:39 PM MDTSevere Thunderstorm WarningCYSNiobrara51 min
Jun 25, 6:07 PM MDTTornado WarningUNRCrook28 min
Jun 25, 6:13 PM MDTSevere Thunderstorm WarningUNRFall River62 min
Jun 25, 6:31 PM MDTSevere Thunderstorm WarningUNRButte, Lawrence29 min
Jun 25, 6:42 PM MDTSevere Thunderstorm WarningUNRCuster, Fall River48 min
Jun 25, 7:13 PM MDTSevere Thunderstorm WarningUNRCuster, Fall River, Pennington32 min
Jun 25, 8:12 PM MDTSevere Thunderstorm WarningUNR25 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, 7.8 hours before the alert went out and 198 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 2014-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLLFCEL10008507005003002001001 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 2014-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939Sfc1 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
9 J/kg
Mixed-layer CIN
-277 J/kg
Mixed-layer LCL
1027 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
16 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 25, 5:07 PM MDTMesoscale DiscussionSPCCarter, Custer, Powder River83 min
Jun 25, 12:58 PM MDTMesoscale DiscussionSPCArthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 9 more2 hr
Jun 25, 5:51 PM MDTMesoscale DiscussionSPCChase, Dundy, Hayes, Hitchcock, Keith, Perkins84 min
Jun 24, 7:13 PM MDTMesoscale DiscussionSPCLaramie92 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2014Severe Thunderstorm Watches in Wyoming, 2014Severe Thunderstorm Watches in South Dakota, 2014Every severe thunderstorm 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; radar from the NEXRAD Level II archive.