Alert archive / Nebraska / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 209

May 24, 201623 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2016, 11:07 PM CDT for 23 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2016, 11:07 PM CDT (04:07 UTC)
Expired
May 25, 2016, 5:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 23 counties

Adams County, NE, Blaine County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Logan County, NE, Loup County, NE, Phelps County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE

The radar

The Grand Island radar (KUEX), 115 km from the middle of the area, began a volume at 04:11 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
20%
One or more gusts of 65 knots or more
20%
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

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

IssuedProductOfficeCountiesLasted
May 24, 11:15 PM CDTSevere Thunderstorm WarningLBFFrontier, Hayes45 min
May 24, 11:49 PM CDTSevere Thunderstorm WarningLBFCuster56 min
May 25, 12:31 AM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson, Gosper44 min
May 25, 1:22 AM CDTSevere Thunderstorm WarningGIDFurnas, Gosper, Harlan, Phelps38 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 00:00Z, 4.1 hours before the alert went out and 89 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 00:00Z on 2016-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1159 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 00:00Z on 2016-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
1159 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1520 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 24, 7:09 PM CDTTornado WatchSPCChase, Deuel, Dundy, Hayes, Hitchcock, Keith and 3 more6 hr
May 24, 9:02 PM CDTMesoscale DiscussionSPCCherry, Sheridan58 min
May 24, 9:49 PM CDTMesoscale DiscussionSPCGage, Jefferson, Nuckolls, Pawnee, Richardson, Thayer86 min
May 24, 10:09 PM CDTSevere Thunderstorm WatchSPCGage, Johnson, Nemaha, Pawnee, Richardson6 hr
May 24, 10:43 PM CDTMesoscale DiscussionSPCAdams, Buffalo, Custer, Dawson, Franklin, Frontier and 15 more92 min
May 24, 11:56 PM CDTMesoscale DiscussionSPCChase, Dundy, Hayes, Hitchcock, Lincoln64 min
May 25, 3:33 AM CDTMesoscale DiscussionSPCAdams, Buffalo, Chase, Dawson, Franklin, Frontier and 8 more57 min
May 25, 2:52 PM CDTMesoscale DiscussionSPCArthur, Blaine, Boyd, Brown, Chase, Cherry and 16 more53 min

Nearby

Severe Thunderstorm Watches in Nebraska, 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.