Alert archive / Kansas / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 382

June 29, 201711 counties in Kansas; 5 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jun 29, 2017, 9:02 PM CDT for 11 counties in Kansas; 5 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 29, 2017, 9:02 PM CDT (02:02 UTC)
Expired
Jun 30, 2017, 1:36 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt

Counties Clay County, KS, Cloud County, KS, Jewell County, KS, Mitchell County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Republic County, KS, Rooks County, KS, Smith County, KS, Washington County, KS, Franklin County, NE, Harlan County, NE, Nuckolls County, NE, Thayer County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 88 km from the middle of the area, began a volume at 02:03 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
40%
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
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 29, 9:27 PM CDTSevere Thunderstorm WarningGIDFurnas, Harlan48 min
Jun 29, 9:59 PM CDTSevere Thunderstorm WarningGIDOsborne, Phillips, Rooks, Smith46 min
Jun 29, 10:05 PM CDTSevere Thunderstorm WarningGIDAdams, Franklin, Harlan, Kearney, Webster40 min
Jun 29, 11:34 PM CDTSevere Thunderstorm WarningGIDJewell29 min
Jun 29, 11:49 PM CDTSevere Thunderstorm WarningGIDThayer16 min
Jun 30, 12:12 AM CDTSevere Thunderstorm WarningTOPDickinson, Ottawa33 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, 2.0 hours before the alert went out and 233 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 2017-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2063 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 2017-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
2063 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
1903 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.1
Supercell composite
4.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 7:28 PM CDTMesoscale DiscussionSPCGrant, Greeley, Hamilton, Kearny, Sherman, Stanton and 2 more2 hr
Jun 29, 8:37 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 37 more83 min
Jun 29, 10:56 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Barber, Barton, Butler, Chase and 41 more6 hr
Jun 30, 1:32 AM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Coffey and 20 more118 min
Jun 30, 1:35 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Nemaha, Pottawatomie2 hr
Jun 30, 2:42 AM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford6 hr
Jun 30, 4:37 AM CDTMesoscale DiscussionSPCBarber, Chautauqua, Comanche, Cowley, Harper, Labette and 2 more113 min
Jun 29, 9:24 PM CDTMesoscale DiscussionSPCDouglas, Sarpy, Saunders, Washington66 min

Nearby

Severe Thunderstorm Watches in Kansas, 2017Severe Thunderstorm Watches in Nebraska, 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.