Alert archive / Nebraska / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 304

June 28, 20164 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2016, 1:37 PM MDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 28, 2016, 1:37 PM MDT (19:37 UTC)
Expired
Jun 28, 2016, 9:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
70 kt
All 50 counties

Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Arthur County, NE, Banner County, NE, Box Butte County, NE, Chase County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Perkins 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, Jackson County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Todd County, SD, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 136 km from the middle of the area, began a volume at 19:40 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
2%
Ten or more severe wind reports
80%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
80%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 28, 2:05 PM MDTSevere Thunderstorm WarningUNRWeston55 min
Jun 28, 2:53 PM MDTSevere Thunderstorm WarningUNRWeston67 min
Jun 28, 2:55 PM MDTSevere Thunderstorm WarningUNRCuster, Pennington65 min
Jun 28, 3:35 PM MDTSevere Thunderstorm WarningUNRWeston31 min
Jun 28, 3:39 PM MDTSevere Thunderstorm WarningUNRCuster, Fall River55 min
Jun 28, 3:44 PM MDTSevere Thunderstorm WarningUNRMeade, Pennington61 min
Jun 28, 3:58 PM MDTSevere Thunderstorm WarningCYSConverse, Niobrara38 min
Jun 28, 4:01 PM MDTSevere Thunderstorm WarningUNRCuster, Lawrence, Meade, Pennington44 min
Jun 28, 4:01 PM MDTSevere Thunderstorm WarningCYSConverse, Platte44 min
Jun 28, 4:02 PM MDTSevere Thunderstorm WarningCYSNiobrara58 min
Jun 28, 4:07 PM MDTSevere Thunderstorm WarningUNRPennington24 min
Jun 28, 4:13 PM MDTSevere Thunderstorm WarningUNRFall River77 min
Jun 28, 4:21 PM MDTSevere Thunderstorm WarningUNRHaakon, Pennington54 min
Jun 28, 4:31 PM MDTSevere Thunderstorm WarningCYSGoshen, Platte28 min
Jun 28, 4:34 PM MDTSevere Thunderstorm WarningCYSConverse, Niobrara28 min
Jun 28, 4:35 PM MDTSevere Thunderstorm WarningUNROglala Lakota, Pennington40 min
Jun 28, 4:44 PM MDTSevere Thunderstorm WarningLBFCherry46 min
Jun 28, 4:51 PM MDTSevere Thunderstorm WarningCYSDawes54 min
Jun 28, 4:54 PM MDTSevere Thunderstorm WarningUNRHaakon, Meade, Pennington66 min
Jun 28, 4:59 PM MDTSevere Thunderstorm WarningUNRHaakon76 min
Jun 28, 4:59 PM MDTSevere Thunderstorm WarningCYSGoshen26 min
Jun 28, 5:04 PM MDTSevere Thunderstorm WarningCYSBanner, Scotts Bluff26 min
Jun 28, 5:11 PM MDTSevere Thunderstorm WarningUNROglala Lakota37 min
Jun 28, 5:13 PM MDTSevere Thunderstorm WarningLBFSheridan47 min
Jun 28, 5:20 PM MDTSevere Thunderstorm WarningLBFSheridan40 min
Jun 28, 5:40 PM MDTSevere Thunderstorm WarningCYSBox Butte, Dawes27 min
Jun 28, 5:51 PM MDTSevere Thunderstorm WarningLBFCherry24 min
Jun 28, 5:57 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan33 min
Jun 28, 6:04 PM MDTSevere Thunderstorm WarningCYSBox Butte, Dawes, Morrill56 min
Jun 28, 6:05 PM MDTSevere Thunderstorm WarningCYSBox Butte, Dawes, Morrill, Scotts Bluff, Sioux25 min
Jun 28, 6:08 PM MDTTornado WarningLBFSheridan20 min
Jun 28, 6:24 PM MDTSevere Thunderstorm WarningLBFCherry, Garden, Grant, Sheridan51 min
Jun 28, 6:41 PM MDTTornado Warning Tornado observedLBFGrant34 min
Jun 28, 6:46 PM MDTSevere Thunderstorm WarningCYSMorrill, Scotts Bluff29 min
Jun 28, 6:46 PM MDTSevere Thunderstorm WarningUNRCampbell59 min
Jun 28, 6:49 PM MDTSevere Thunderstorm WarningLBFCherry41 min
Jun 28, 6:56 PM MDTSevere Thunderstorm WarningCYSBox Butte, Morrill49 min
Jun 28, 7:15 PM MDTSevere Thunderstorm WarningCYSMorrill28 min
Jun 28, 7:20 PM MDTSevere Thunderstorm WarningCYSCheyenne40 min
Jun 28, 7:20 PM MDTSevere Thunderstorm WarningLBFArthur, Garden, Grant, Hooker, McPherson40 min
Jun 28, 7:28 PM MDTSevere Thunderstorm WarningLBFCherry32 min
Jun 28, 7:38 PM MDTSevere Thunderstorm WarningBOULogan, Sedgwick42 min
Jun 28, 7:49 PM MDTSevere Thunderstorm WarningLBFCherry41 min
Jun 28, 7:55 PM MDTSevere Thunderstorm WarningLBFArthur, Keith, Lincoln, McPherson50 min
Jun 28, 7:58 PM MDTSevere Thunderstorm WarningBOUAdams, Washington32 min
Jun 28, 8:03 PM MDTSevere Thunderstorm WarningBOULogan, Phillips, Sedgwick57 min
Jun 28, 8:04 PM MDTSevere Thunderstorm WarningLBFKeith, Perkins26 min
Jun 28, 8:25 PM MDTSevere Thunderstorm WarningLBFKeith, Lincoln, Logan, McPherson35 min
Jun 28, 8:27 PM MDTSevere Thunderstorm WarningBOULincoln, Washington50 min
Jun 28, 8:27 PM MDTSevere Thunderstorm WarningLBFChase, Hayes, Lincoln, Perkins33 min
Jun 28, 8:43 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown, Custer, Logan, Loup, Rock and 1 more47 min
Jun 28, 8:56 PM MDTSevere Thunderstorm WarningLBFChase, Frontier, Hayes, Lincoln, Perkins64 min
Jun 28, 8:59 PM MDTSevere Thunderstorm WarningLBFCuster, Lincoln, Logan46 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, 7.6 hours before the alert went out and 129 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 2016-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 306 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 2016-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.193958Sfc1 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
306 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
1761 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 27, 6:44 PM MDTMesoscale DiscussionSPCAdams, Boulder, Broomfield, Larimer, Logan, Morgan and 4 more61 min
Jun 28, 12:55 PM MDTMesoscale DiscussionSPCLogan, Phillips, Sedgwick, Yuma95 min
Jun 28, 4:26 PM MDTMesoscale DiscussionSPCBox Butte, Dawes, Morrill, Scotts Bluff, Sheridan, Sioux94 min
Jun 28, 5:36 PM MDTMesoscale DiscussionSPCArthur, Box Butte, Dawes, Garden, Grant, Hooker and 1 more24 min
Jun 28, 11:32 AM MDTMesoscale DiscussionSPCCuster, Lawrence, Pennington58 min

Nearby

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