Alert archive / Kansas / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 379

June 29, 201742 counties in Kansas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 29, 2017, 1:22 AM CDT for 42 counties in Kansas. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jun 29, 2017, 1:22 AM CDT (06:22 UTC)
Expired
Jun 29, 2017, 8:53 AM CDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
60 kt
All 42 counties

Barton County, KS, Cheyenne County, KS, Clay County, KS, Cloud County, KS, Decatur County, KS, Dickinson County, KS, Ellis County, KS, Ellsworth County, KS, Geary County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Jewell County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Marshall County, KS, Mitchell County, KS, Morris County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Rawlins County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wabaunsee County, KS, Wallace County, KS, Washington County, KS, Wichita County, KS

The radar

The Grand Island radar (KUEX), 157 km from the middle of the area, began a volume at 06:24 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
20%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 29, 1:26 AM CDTSevere Thunderstorm WarningGIDSmith34 min
Jun 29, 1:35 AM CDTSevere Thunderstorm WarningTOPRepublic40 min
Jun 29, 1:55 AM CDTSevere Thunderstorm WarningGIDJewell, Smith37 min
Jun 29, 2:10 AM CDTSevere Thunderstorm WarningGLDGreeley, Wallace50 min
Jun 29, 2:46 AM CDTSevere Thunderstorm WarningGLDGreeley, Logan, Wallace, Wichita44 min
Jun 29, 3:09 AM CDTSevere Thunderstorm WarningGLDSheridan, Thomas51 min
Jun 29, 3:20 AM CDTSevere Thunderstorm WarningGLDSheridan40 min
Jun 29, 3:26 AM CDTSevere Thunderstorm WarningGLDGove, Logan34 min
Jun 29, 3:32 AM CDTSevere Thunderstorm WarningGLDGraham, Norton43 min
Jun 29, 3:49 AM CDTSevere Thunderstorm WarningGIDPhillips, Rooks41 min
Jun 29, 4:01 AM CDTSevere Thunderstorm WarningGLDDecatur, Gove, Graham, Norton, Sheridan, Thomas30 min
Jun 29, 4:05 AM CDTSevere Thunderstorm WarningGLDGraham, Norton26 min
Jun 29, 4:27 AM CDTSevere Thunderstorm WarningGIDOsborne, Phillips, Rooks, Smith48 min
Jun 29, 5:03 AM CDTSevere Thunderstorm WarningGIDJewell, Mitchell, Osborne, Smith27 min
Jun 29, 5:28 AM CDTSevere Thunderstorm WarningGIDJewell32 min
Jun 29, 5:41 AM CDTSevere Thunderstorm WarningTOPCoffey, Lyon, Morris, Osage, Wabaunsee49 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, 6.4 hours before the alert went out and 169 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 2017-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1583 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 2017-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.193958Sfc1 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
1583 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
2649 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-37 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 11:38 PM CDTMesoscale DiscussionSPCCheyenne, Logan, Rawlins, Sherman, Thomas, Wallace67 min
Jun 29, 12:47 AM CDTMesoscale DiscussionSPCBarton, Chase, Clay, Cloud, Dickinson, Ellis and 26 more58 min
Jun 29, 4:52 AM CDTMesoscale DiscussionSPCClay, Cloud, Coffey, Dickinson, Douglas, Franklin and 22 more53 min
Jun 29, 2:05 PM CDTMesoscale DiscussionSPCGreeley, Logan, Wallace2 hr
Jun 29, 2:50 PM CDTSevere Thunderstorm WatchSPCGove, Graham, Grant, Greeley, Hamilton, Kearny and 8 more7 hr
Jun 29, 3:12 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 28 more3 hr

Nearby

Severe Thunderstorm Watches in Kansas, 2017Every severe thunderstorm 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.