Alert archive / Nebraska / Severe Thunderstorm Watches in 2015

Severe Thunderstorm Watch 282

June 10, 201542 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jun 10, 2015, 2:37 PM CDT for 42 counties in Nebraska. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Jun 10, 2015, 2:37 PM CDT (19:37 UTC)
Expired
Jun 11, 2015, 12:00 AM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 42 counties

Adams County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Cherry County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Rock County, NE, Sherman County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The North Platte radar (KLNX), 62 km from the middle of the area, began a volume at 19:36 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
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
10%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 10, 3:32 PM CDTFlash Flood WarningLBFLincoln6 hr
Jun 10, 4:13 PM CDTSevere Thunderstorm WarningGIDDawson47 min
Jun 10, 4:34 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Loup, Rock41 min
Jun 10, 5:00 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Loup45 min
Jun 10, 5:41 PM CDTSevere Thunderstorm WarningLBFCuster, Garfield, Loup49 min
Jun 10, 5:44 PM CDTSevere Thunderstorm WarningGIDValley31 min
Jun 10, 5:57 PM CDTSevere Thunderstorm WarningGIDDawson33 min
Jun 10, 6:05 PM CDTSevere Thunderstorm WarningGIDDawson, Gosper25 min
Jun 10, 6:19 PM CDTSevere Thunderstorm WarningLBFGarfield, Wheeler41 min
Jun 10, 6:25 PM CDTSevere Thunderstorm WarningGIDGreeley, Howard, Sherman50 min
Jun 10, 6:31 PM CDTSevere Thunderstorm WarningGIDDawson, Gosper33 min
Jun 10, 6:57 PM CDTSevere Thunderstorm WarningGIDFranklin, Webster37 min
Jun 10, 7:01 PM CDTSevere Thunderstorm WarningLBFWheeler24 min
Jun 10, 7:18 PM CDTSevere Thunderstorm WarningGIDAdams, Franklin, Kearney27 min
Jun 10, 7:44 PM CDTSevere Thunderstorm WarningGIDAdams, Hall, Kearney31 min
Jun 10, 7:48 PM CDTSevere Thunderstorm WarningGIDFurnas, Gosper23 min
Jun 10, 8:14 PM CDTSevere Thunderstorm WarningGIDHall, Hamilton, Howard, Merrick31 min
Jun 10, 8:35 PM CDTSevere Thunderstorm WarningGIDPolk, York25 min
Jun 10, 8:46 PM CDTSevere Thunderstorm WarningGIDFranklin, Harlan44 min
Jun 10, 9:07 PM CDTSevere Thunderstorm WarningGIDAdams, Franklin, Kearney, Webster38 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.6 hours before the alert went out and 96 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, N. Platte/Lee Bi, NE at 12:00Z on 2015-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 338 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, N. Platte/Lee Bi, NE at 12:00Z on 2015-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
338 J/kg
Mixed-layer CIN
-224 J/kg
Mixed-layer LCL
2523 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
-29 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 10, 2:02 PM CDTMesoscale DiscussionSPCAdams, Arthur, Blaine, Brown, Buffalo, Chase and 32 more118 min
Jun 10, 3:13 PM CDTMesoscale DiscussionSPCButler, Cass, Colfax, Douglas, Johnson, Lancaster and 10 more92 min
Jun 10, 6:18 PM CDTMesoscale DiscussionSPCAntelope, Boone, Burt, Butler, Colfax, Cuming and 18 more87 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2015Every severe thunderstorm watch in 2015

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.