Alert archive / Kansas / Mesoscale Discussions in 2007

Mesoscale Discussion 221

February 28, 2007Butler County, Cowley County, Kansas; Kay County, Noble County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2007, 7:46 PM CST for Butler County, Cowley County, Kansas; Kay County, Noble County, Oklahoma. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Feb 28, 2007, 7:46 PM CST (01:46 UTC)
Expired: Feb 28, 2007, 9:15 PM CST
In force: 89 min
Issued by: the Storm Prediction Center

Counties Butler County, KS, Cowley County, KS, Kay County, OK, Noble County, OK

The radar

The Wichita radar (KICT), 85 km from the middle of the area, began a volume at 01:47 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

Lamont, OK (KLMN), launched 00:00Z, 1.8 hours before the alert went out and 73 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: 59 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 2686 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 295 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
Feb 28, 6:11 PM CST	Mesoscale Discussion	SPC	Wyandotte	94 min
Feb 28, 6:37 PM CST	Severe Thunderstorm Watch	SPC	Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 5 more	7 hr
Feb 28, 6:50 PM CST	Mesoscale Discussion	SPC	Bourbon, Cherokee, Crawford, Linn, Miami	85 min
Feb 28, 7:10 PM CST	Tornado Watch	SPC	Bourbon, Linn, Miami	7 hr
Feb 28, 9:48 PM CST	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Crawford, Douglas, Franklin and 3 more	87 min
Feb 28, 10:57 PM CST	Mesoscale Discussion	SPC	Chautauqua, Cowley, Elk	93 min
Mar 1, 1:32 AM CST	Tornado Watch	SPC	Bourbon, Cherokee, Crawford, Labette, Linn, Neosho	6 hr

Nearby

Mesoscale Discussions in Kansas, 2007 Mesoscale Discussions in Oklahoma, 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.