Alert archive / Nebraska / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 87

April 23, 201425 counties in Kansas; 33 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Apr 23, 2014, 3:04 PM CDT for 25 counties in Kansas; 33 counties in Nebraska. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Apr 23, 2014, 3:04 PM CDT (20:04 UTC)
Expired: Apr 23, 2014, 11:00 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 58 counties

Barton County, KS, Cloud County, KS, Decatur County, KS, Ellis County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Republic County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Sheridan County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wichita County, KS, Adams County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 42 km from the middle of the area, began a volume at 20:04 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: 5%
One or more EF2 to EF5 tornadoes: 2%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 23, 3:53 PM CDT	Severe Thunderstorm Warning	GID	Phillips, Smith	52 min
Apr 23, 4:13 PM CDT	Severe Thunderstorm Warning	GLD	Greeley, Logan, Wallace, Wichita	47 min
Apr 23, 4:17 PM CDT	Severe Thunderstorm Warning	GID	Adams, Hall, Hamilton, Merrick	43 min
Apr 23, 4:45 PM CDT	Severe Thunderstorm Warning	GID	Adams, Clay, Franklin, Hall, Kearney, Webster	45 min
Apr 23, 4:54 PM CDT	Severe Thunderstorm Warning	GLD	Logan	66 min
Apr 23, 4:58 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Harlan, Kearney, Phelps	47 min
Apr 23, 5:09 PM CDT	Severe Thunderstorm Warning	GID	Howard, Merrick, Nance	51 min
Apr 23, 5:28 PM CDT	Severe Thunderstorm Warning	GID	Adams, Clay, Hall, Hamilton, Merrick, York	47 min
Apr 23, 5:40 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Harlan, Kearney, Phelps	50 min
Apr 23, 5:48 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Logan, Sheridan, Thomas	57 min
Apr 23, 5:52 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Norton	53 min
Apr 23, 6:12 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Rawlins	48 min
Apr 23, 6:41 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Norton	64 min
Apr 23, 6:43 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Sheridan	62 min
Apr 23, 6:43 PM CDT	Severe Thunderstorm Warning	GID	Adams, Clay, Hall, Hamilton, Merrick	47 min
Apr 23, 6:45 PM CDT	Severe Thunderstorm Warning	GID	Phillips	45 min
Apr 23, 6:59 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Hall	46 min
Apr 23, 7:41 PM CDT	Severe Thunderstorm Warning	GLD	Graham	64 min
Apr 23, 9:22 PM CDT	Flash Flood Warning	GLD	Decatur, Graham, Norton, Sheridan, Thomas	4 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.1 hours before the alert went out and 163 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1736 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 621 m²/s²
0-3 km storm-relative helicity: 594 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.

Issued	Product	Office	Counties	Lasted
Apr 23, 2:34 PM CDT	Mesoscale Discussion	SPC	Barton, Ellis, Gove, Graham, Jewell, Lane and 11 more	2 hr
Apr 23, 2:37 PM CDT	Mesoscale Discussion	SPC	Clark, Comanche, Edwards, Finney, Ford, Gray and 5 more	113 min
Apr 23, 3:32 PM CDT	Mesoscale Discussion	SPC	Cheyenne	2 hr
Apr 23, 3:44 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Edwards, Finney, Ford and 9 more	7 hr
Apr 23, 6:16 PM CDT	Mesoscale Discussion	SPC	Barton, Cloud, Decatur, Ellis, Gove, Graham and 18 more	59 min
Apr 23, 6:54 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Edwards, Finney, Ford and 9 more	96 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2014 Severe Thunderstorm Watches in Kansas, 2014 Every 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.