Alert archive / Kansas / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 104

April 26, 201620 counties in Kansas; 13 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Apr 26, 2016, 3:02 AM CDT for 20 counties in Kansas; 13 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 26, 2016, 3:02 AM CDT (08:02 UTC)
Expired: Apr 26, 2016, 8:37 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

All 33 counties

Brown County, KS, Clay County, KS, Cloud County, KS, Douglas County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Adams County, NE, Clay County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Nuckolls County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Thayer County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 103 km from the middle of the area, began a volume at 08:06 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: 10%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 50%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 26, 3:03 AM CDT	Severe Thunderstorm Warning	GID	Jewell	27 min
Apr 26, 3:12 AM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud, Washington	48 min
Apr 26, 3:20 AM CDT	Severe Thunderstorm Warning	TOP	Republic	55 min
Apr 26, 3:27 AM CDT	Severe Thunderstorm Warning	GID	Smith	33 min
Apr 26, 3:30 AM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	34 min
Apr 26, 3:32 AM CDT	Severe Thunderstorm Warning	GID	Jewell	27 min
Apr 26, 3:37 AM CDT	Severe Thunderstorm Warning	TOP	Washington	35 min
Apr 26, 3:59 AM CDT	Severe Thunderstorm Warning	TOP	Washington	46 min
Apr 26, 4:10 AM CDT	Severe Thunderstorm Warning	TOP	Republic	39 min
Apr 26, 4:16 AM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	59 min
Apr 26, 4:42 AM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	23 min
Apr 26, 5:00 AM CDT	Severe Thunderstorm Warning	TOP	Washington	45 min
Apr 26, 5:12 AM CDT	Severe Thunderstorm Warning	TOP	Marshall	48 min
Apr 26, 5:20 AM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	40 min
Apr 26, 5:43 AM CDT	Severe Thunderstorm Warning	GID	Fillmore, Thayer	47 min
Apr 26, 5:53 AM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	67 min
Apr 26, 6:04 AM CDT	Flash Flood Warning	TOP	Marshall	4 hr
Apr 26, 6:36 AM CDT	Severe Thunderstorm Warning	TOP	Brown, Jackson	54 min
Apr 26, 6:47 AM CDT	Severe Thunderstorm Warning	TOP	Jefferson	13 min
Apr 26, 6:55 AM CDT	Severe Thunderstorm Warning	TOP	Nemaha	20 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

Topeka, KS (KFOE), launched 00:00Z, 8.0 hours before the alert went out and 179 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: 748 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1375 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 2:18 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Clay, Cloud, Dickinson, Doniphan and 21 more	117 min
Apr 26, 4:37 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Clay, Cloud, Doniphan, Douglas and 13 more	83 min
Apr 26, 6:23 AM CDT	Severe Thunderstorm Watch	SPC	Atchison, Doniphan, Johnson, Leavenworth, Miami, Wyandotte	7 hr
Apr 26, 7:18 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jefferson, Leavenworth, Wyandotte	87 min
Apr 26, 10:09 AM CDT	Mesoscale Discussion	SPC	Chautauqua, Labette, Montgomery	96 min
Apr 26, 1:35 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Clay and 37 more	115 min
Apr 26, 2:12 PM CDT	Tornado Watch	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Clay and 46 more	7 hr
Apr 26, 6:14 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Leavenworth	61 min
Apr 26, 6:32 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Clay and 46 more	58 min
Apr 26, 2:35 AM CDT	Mesoscale Discussion	SPC	Chase, Deuel, Dundy, Keith, Perkins	115 min

Nearby

Severe Thunderstorm Watches in Kansas, 2016 Severe Thunderstorm Watches in Nebraska, 2016 Every 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.