Alert archive / Kansas / Mesoscale Discussions in 2009

Mesoscale Discussion 232

March 20, 200913 counties in Kansas; 5 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2009, 10:01 PM CDT for 13 counties in Kansas; 5 counties in Oklahoma. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Mar 20, 2009, 10:01 PM CDT (03:01 UTC)
Expired: Mar 20, 2009, 11:30 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

Counties Barber County, KS, Clark County, KS, Comanche County, KS, Cowley County, KS, Edwards County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pratt County, KS, Reno County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Alfalfa County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Woods County, OK

The radar

The Vance AFB radar (KVNX), 67 km from the middle of the area, began a volume at 03:01 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

Dodge City, (KDDC), launched 00:00Z, 3.0 hours before the alert went out and 154 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: 247 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 184 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
Mar 21, 6:23 PM CDT	Mesoscale Discussion	SPC	Cheyenne	97 min

Nearby

Mesoscale Discussions in Kansas, 2009 Mesoscale Discussions in Oklahoma, 2009 Every mesoscale discussion in 2009

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.