Alert archive / Kansas / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 464

August 17, 201419 counties in Kansas; 5 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Aug 17, 2014, 9:07 PM CDT for 19 counties in Kansas; 5 counties in Nebraska. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Aug 17, 2014, 9:07 PM CDT (02:07 UTC)
Expired
Aug 18, 2014, 1:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 24 counties

Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellsworth County, KS, Geary County, KS, Jewell County, KS, Lincoln County, KS, Lyon County, KS, Mitchell County, KS, Morris County, KS, Osborne County, KS, Ottawa County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Clay County, NE, Fillmore County, NE, Nuckolls County, NE, Thayer County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 94 km from the middle of the area, began a volume at 02:09 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
5%
Six or more combined severe hail and wind reports
40%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Aug 17, 9:13 PM CDTSevere Thunderstorm WarningGIDClay, Fillmore, Nuckolls, Thayer62 min
Aug 17, 9:14 PM CDTSevere Thunderstorm WarningICTEllsworth, Lincoln, Russell46 min
Aug 17, 9:30 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell, Smith45 min
Aug 17, 9:33 PM CDTSevere Thunderstorm WarningTOPCloud, Republic57 min
Aug 17, 9:38 PM CDTSevere Thunderstorm WarningGIDMitchell, Osborne, Rooks37 min
Aug 17, 9:58 PM CDTSevere Thunderstorm WarningICTEllsworth, Lincoln, Saline47 min
Aug 17, 10:00 PM CDTSevere Thunderstorm WarningTOPCloud, Ottawa60 min
Aug 17, 10:11 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell, Osborne49 min
Aug 17, 10:13 PM CDTSevere Thunderstorm WarningTOPClay, Cloud, Dickinson, Ottawa, Republic, Washington62 min
Aug 17, 10:27 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington48 min
Aug 17, 10:49 PM CDTSevere Thunderstorm WarningICTMcPherson, Saline26 min
Aug 17, 10:53 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Morris52 min
Aug 17, 11:00 PM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Geary, Pottawatomie, Riley42 min
Aug 17, 11:16 PM CDTSevere Thunderstorm WarningICTHarvey, McPherson, Marion, Saline44 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, 2.1 hours before the alert went out and 230 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 2014-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 920 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, Dodge City, at 00:00Z on 2014-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 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
920 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
2823 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 8:57 PM CDTMesoscale DiscussionSPCCloud, Jewell, Lincoln, Mitchell, Osborne, Ottawa and 2 more63 min
Aug 17, 10:34 PM CDTMesoscale DiscussionSPCChase, Clay, Cloud, Dickinson, Geary, McPherson and 9 more56 min
Aug 18, 3:48 PM CDTMesoscale DiscussionSPCCheyenne, Sherman87 min

Nearby

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