Alert archive / Nebraska / Tornado Watches in 2013

Tornado Watch 344

June 22, 201311 counties in Nebraska; 10 counties in South Dakota

The Storm Prediction Center issued this tornado watch at Jun 22, 2013, 2:13 PM MDT for 11 counties in Nebraska; 10 counties in South Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 22, 2013, 2:13 PM MDT (20:13 UTC)
Expired
Jun 22, 2013, 8:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
70 kt
All 21 counties

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, Perkins County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 36 km from the middle of the area, began a volume at 20:16 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
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 22, 3:52 PM MDTSevere Thunderstorm WarningUNRButte, Lawrence53 min
Jun 22, 4:17 PM MDTSevere Thunderstorm WarningCYSBanner, Scotts Bluff58 min
Jun 22, 4:29 PM MDTSevere Thunderstorm WarningCYSScotts Bluff, Sioux46 min
Jun 22, 4:38 PM MDTSevere Thunderstorm WarningUNRButte67 min
Jun 22, 4:42 PM MDTSevere Thunderstorm WarningUNRLawrence, Meade, Pennington63 min
Jun 22, 4:44 PM MDTTornado WarningCYSBanner, Scotts Bluff31 min
Jun 22, 5:13 PM MDTTornado WarningCYSBanner32 min
Jun 22, 5:16 PM MDTSevere Thunderstorm WarningUNRButte, Harding, Meade, Perkins59 min
Jun 22, 5:21 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball54 min
Jun 22, 5:36 PM MDTSevere Thunderstorm WarningCYSScotts Bluff54 min
Jun 22, 5:59 PM MDTSevere Thunderstorm WarningUNRHaakon, Meade, Pennington, Ziebach61 min
Jun 22, 6:11 PM MDTSevere Thunderstorm WarningUNRHarding, Perkins, Ziebach79 min
Jun 22, 6:13 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball62 min
Jun 22, 6:27 PM MDTSevere Thunderstorm WarningCYSMorrill48 min
Jun 22, 6:56 PM MDTTornado Warning Tornado observedCYSCheyenne, Kimball34 min
Jun 22, 7:13 PM MDTSevere Thunderstorm WarningCYSBox Butte, Morrill62 min
Jun 22, 7:32 PM MDTFlash Flood WarningCYSBanner, Kimball6 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

Rapid City, SD (KUNR), launched 12:00Z, 8.2 hours before the alert went out and 29 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 2013-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 641 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 2013-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.19395878Sfc1 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
641 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 7:56 PM MDTMesoscale DiscussionSPCBlaine, Boyd, Brown, Cherry, Holt, Hooker and 7 more94 min
Jun 21, 8:07 PM MDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boone, Boyd, Cedar, Custer and 9 more5 hr
Jun 21, 8:39 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more36 min
Jun 21, 9:25 PM MDTSevere Thunderstorm WatchSPCBuffalo, Dawson, Gosper, Greeley, Hall, Hamilton and 7 more3 hr
Jun 21, 11:42 PM MDTMesoscale DiscussionSPCArthur, Blaine, Brown, Cherry, Custer, Grant and 7 more93 min
Jun 22, 1:45 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Dawes, Garden, Morrill, Scotts Bluff and 2 more90 min
Jun 22, 2:34 PM MDTMesoscale DiscussionSPCAdams, Blaine, Brown, Buffalo, Custer, Dawson and 15 more56 min
Jun 22, 4:00 PM MDTMesoscale DiscussionSPCChase, Cheyenne, Custer, Dawson, Deuel, Dundy and 7 more90 min
Jun 22, 4:18 PM MDTTornado WatchSPCDundy7 hr
Jun 22, 4:56 PM MDTTornado WatchSPCAdams, Antelope, Arthur, Blaine, Boone, Buffalo and 52 more7 hr

Nearby

Tornado Watches in Nebraska, 2013Tornado Watches in South Dakota, 2013Every tornado watch in 2013

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.