Alert archive / Oklahoma / Mesoscale Discussions in 2017

Mesoscale Discussion 1194

June 30, 20178 counties in Kansas; 13 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2017, 4:37 AM CDT for 8 counties in Kansas; 13 counties in Oklahoma. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Jun 30, 2017, 4:37 AM CDT (09:37 UTC)
Expired: Jun 30, 2017, 6:30 AM CDT
In force: 113 min
Issued by: the Storm Prediction Center

All 21 counties

Barber County, KS, Chautauqua County, KS, Comanche County, KS, Cowley County, KS, Harper County, KS, Labette County, KS, Montgomery County, KS, Sumner County, KS, Alfalfa County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Major County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Washington County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 44 km from the middle of the area, began a volume at 09:36 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.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 9.6 hours before the alert went out and 166 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1186 J/kg
Mixed-layer CIN: -297 J/kg
Mixed-layer LCL: 1642 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 7:28 PM CDT	Mesoscale Discussion	SPC	Grant, Greeley, Hamilton, Kearny, Sherman, Stanton and 2 more	2 hr
Jun 29, 8:37 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 37 more	83 min
Jun 29, 9:02 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Cloud, Jewell, Mitchell, Osborne, Ottawa and 5 more	5 hr
Jun 29, 10:56 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Barber, Barton, Butler, Chase and 41 more	6 hr
Jun 30, 1:32 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Coffey and 20 more	118 min
Jun 30, 1:35 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Nemaha, Pottawatomie	2 hr
Jun 30, 2:42 AM CDT	Severe Thunderstorm Watch	SPC	Bourbon, Cherokee, Crawford	6 hr
Jun 30, 6:30 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Creek, Muskogee, Okmulgee, Sequoyah and 2 more	2 hr
Jun 30, 3:21 PM CDT	Mesoscale Discussion	SPC	Atoka, Beckham, Bryan, Caddo, Canadian, Carter and 39 more	114 min
Jun 30, 3:42 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Atoka, Beckham, Bryan, Caddo, Canadian and 41 more	7 hr
Jun 30, 6:27 PM CDT	Mesoscale Discussion	SPC	Adair, Atoka, Beckham, Bryan, Caddo, Canadian and 44 more	93 min

Nearby

Mesoscale Discussions in Oklahoma, 2017 Mesoscale Discussions in Kansas, 2017 Every mesoscale discussion 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.