Alert archive / Oklahoma / Mesoscale Discussions in 2007

Mesoscale Discussion 1202

June 19, 20078 counties in Kansas; 22 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2007, 4:37 PM CDT for 8 counties in Kansas; 22 counties in Oklahoma. It was in force for 23 min.

The area

The outline as issued.

The facts

Issued: Jun 19, 2007, 4:37 PM CDT (21:37 UTC)
Expired: Jun 19, 2007, 5:00 PM CDT
In force: 23 min
Issued by: the Storm Prediction Center

All 30 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pratt County, KS, Sumner County, KS, Alfalfa County, OK, Blaine County, OK, Creek County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McIntosh County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Tulsa County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 55 km from the middle of the area, began a volume at 21:38 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 423Jun 19, 4:55 PM CDT

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 9.6 hours before the alert went out and 10 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: 3367 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 12:59 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Ellis, Finney, Gove, Graham and 17 more	61 min
Jun 19, 1:13 PM CDT	Tornado Watch	SPC	Barton, Decatur, Edwards, Ellis, Finney, Ford and 23 more	8 hr
Jun 19, 3:31 PM CDT	Mesoscale Discussion	SPC	Hamilton, Morton, Stanton, Stevens	89 min
Jun 19, 4:52 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Grant, Hamilton, Harper and 10 more	7 hr
Jun 19, 5:24 PM CDT	Mesoscale Discussion	SPC	Barton, Cheyenne, Edwards, Finney, Ford, Gove and 22 more	66 min
Jun 19, 3:41 PM CDT	Mesoscale Discussion	SPC	Latimer, LeFlore, McCurtain, Pushmataha	64 min
Jun 19, 5:22 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Cimarron, Texas	9 hr

Nearby

Mesoscale Discussions in Oklahoma, 2007 Mesoscale Discussions in Kansas, 2007 Every mesoscale discussion in 2007

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.