Alert archive / Kansas / Severe Thunderstorm Watches in 2015

Severe Thunderstorm Watch 18

April 2, 201541 counties in Kansas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 2, 2015, 9:14 PM CDT for 41 counties in Kansas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 2, 2015, 9:14 PM CDT (02:14 UTC)
Expired
Apr 3, 2015, 2:43 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
65 kt
All 41 counties

Allen County, KS, Anderson County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Coffey County, KS, Cowley County, KS, Dickinson County, KS, Edwards County, KS, Elk County, KS, Ellis County, KS, Ellsworth County, KS, Greenwood County, KS, Harvey County, KS, Hodgeman County, KS, Kingman County, KS, Labette County, KS, Lane County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Ness County, KS, Ottawa County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Trego County, KS, Wilson County, KS, Woodson County, KS

The radar

The Wichita radar (KICT), 129 km from the middle of the area, began a volume at 02:15 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
30%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 2, 9:20 PM CDTSevere Thunderstorm WarningDDCEllis, Finney, Gray, Hodgeman, Lane, Ness and 2 more55 min
Apr 2, 9:50 PM CDTSevere Thunderstorm WarningDDCEllis, Ness, Rush, Trego55 min
Apr 2, 9:55 PM CDTSevere Thunderstorm WarningDDCEdwards, Finney, Ford, Gray, Hodgeman, Ness and 2 more50 min
Apr 2, 10:25 PM CDTSevere Thunderstorm WarningICTBarton50 min
Apr 2, 10:42 PM CDTSevere Thunderstorm WarningDDCEdwards, Ellis, Pawnee, Rush, Stafford43 min
Apr 2, 11:16 PM CDTSevere Thunderstorm WarningICTBarton, Reno, Rice39 min
Apr 2, 11:42 PM CDTSevere Thunderstorm WarningICTHarvey, Kingman, McPherson, Reno, Sedgwick63 min
Apr 2, 11:49 PM CDTSevere Thunderstorm WarningICTMcPherson, Rice41 min
Apr 3, 12:23 AM CDTSevere Thunderstorm WarningICTButler, Cowley48 min
Apr 3, 12:34 AM CDTSevere Thunderstorm WarningICTChase, Harvey, Marion31 min
Apr 3, 12:56 AM CDTSevere Thunderstorm WarningICTChautauqua, Elk, Greenwood, Montgomery, Wilson, Woodson64 min
Apr 3, 1:38 AM CDTSevere Thunderstorm WarningICTMontgomery, Wilson27 min
Apr 3, 1:52 AM CDTSevere Thunderstorm WarningICTAllen, Labette, Neosho38 min
Apr 3, 2:02 AM CDTTornado WarningICTLabette28 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

Dodge City, (KDDC), launched 00:00Z, 2.2 hours before the alert went out and 150 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, Dodge City, at 00:00Z on 2015-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Dodge City, at 00:00Z on 2015-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2130 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
285 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
Apr 2, 7:02 PM CDTTornado WatchSPCAllen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 8 more8 hr
Apr 2, 7:20 PM CDTMesoscale DiscussionSPCBarton, Cloud, Edwards, Ellis, Ellsworth, Finney and 34 more85 min
Apr 2, 11:44 PM CDTMesoscale DiscussionSPCButler, Elk, Greenwood, Harvey, McPherson, Reno and 3 more61 min
Apr 3, 1:16 AM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Neosho59 min
Apr 3, 1:52 AM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford4 hr
Apr 3, 1:57 AM CDTMesoscale DiscussionSPCAllen, Anderson, Coffey, Labette, Montgomery, Neosho and 2 more63 min

Nearby

Severe Thunderstorm Watches in Kansas, 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.