Alert archive / Kansas / Tornado Watches in 2017

Tornado Watch 492

October 2, 201716 counties in Kansas

The Storm Prediction Center issued this tornado watch at Oct 2, 2017, 5:25 PM CDT for 16 counties in Kansas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 2, 2017, 5:25 PM CDT (22:25 UTC)
Expired
Oct 2, 2017, 11:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt

Counties Finney County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Ness County, KS, Norton County, KS, Phillips County, KS, Rooks County, KS, Scott County, KS, Sheridan County, KS, Trego County, KS, Wichita County, KS

The radar

The Goodland radar (KGLD), 131 km from the middle of the area, began a volume at 22:26 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
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 2, 5:28 PM CDTSevere Thunderstorm WarningGLDGreeley, Logan, Wichita47 min
Oct 2, 6:12 PM CDTSevere Thunderstorm WarningGLDGreeley, Logan, Wallace, Wichita63 min
Oct 2, 6:52 PM CDTSevere Thunderstorm WarningDDCScott38 min
Oct 2, 6:55 PM CDTSevere Thunderstorm WarningGIDPhillips50 min
Oct 2, 6:59 PM CDTTornado WarningDDCScott26 min
Oct 2, 7:07 PM CDTSevere Thunderstorm WarningGLDGove, Logan, Sheridan, Thomas, Wallace, Wichita38 min
Oct 2, 7:16 PM CDTTornado Warning Tornado observedGLDGove, Logan29 min
Oct 2, 7:40 PM CDTTornado WarningGLDGove, Sheridan35 min
Oct 2, 7:52 PM CDTSevere Thunderstorm WarningGLDDecatur, Gove, Graham, Logan, Sheridan, Thomas38 min
Oct 2, 7:58 PM CDTSevere Thunderstorm WarningDDCScott36 min
Oct 2, 8:02 PM CDTFlash Flood WarningGLDGove, Logan, Sheridan, Thomas3 hr
Oct 2, 8:16 PM CDTSevere Thunderstorm WarningDDCTrego44 min
Oct 2, 8:18 PM CDTTornado WarningDDCScott15 min
Oct 2, 8:32 PM CDTSevere Thunderstorm WarningGLDDecatur, Gove, Graham, Logan, Sheridan58 min
Oct 2, 8:34 PM CDTFlash Flood WarningGLDGove, Sheridan6 hr
Oct 2, 8:46 PM CDTSevere Thunderstorm WarningDDCScott44 min
Oct 2, 8:56 PM CDTSevere Thunderstorm WarningGLDGraham, Norton49 min
Oct 2, 8:58 PM CDTSevere Thunderstorm WarningDDCTrego31 min
Oct 2, 9:30 PM CDTSevere Thunderstorm WarningGLDGove, Graham, Logan, Sheridan45 min
Oct 2, 9:49 PM CDTFlash Flood WarningGLDGraham6 hr
Oct 2, 10:02 PM CDTSevere Thunderstorm WarningGLDDecatur, Norton, Sheridan43 min
Oct 2, 10:13 PM CDTSevere Thunderstorm WarningGLDGraham32 min
Oct 2, 10:15 PM CDTSevere Thunderstorm WarningGLDGove, Graham, Sheridan30 min
Oct 2, 10:16 PM CDTSevere Thunderstorm WarningGIDPhillips, Rooks44 min
Oct 2, 10:21 PM CDTSevere Thunderstorm WarningDDCTrego28 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 12:00Z, 10.4 hours before the alert went out and 158 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 12:00Z on 2017-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1052 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 12:00Z on 2017-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 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
1052 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 1, 8:14 PM CDTMesoscale DiscussionSPCDecatur, Graham, Jewell, Norton, Phillips, Rooks and 1 more2 hr
Oct 1, 10:54 PM CDTMesoscale DiscussionSPCEllis, Graham, Jewell, Mitchell, Osborne, Phillips and 5 more2 hr
Oct 2, 3:19 PM CDTMesoscale DiscussionSPCFinney, Grant, Gray, Haskell, Kearny, Lane and 7 more116 min

Nearby

Tornado Watches in Kansas, 2017Every tornado watch in 2017

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.