Alert archive / Kentucky / Mesoscale Discussions in 2009

Mesoscale Discussion 65

February 3, 20094 states

The Storm Prediction Center issued this mesoscale discussion at Feb 3, 2009, 10:44 AM EST for 4 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Feb 3, 2009, 10:44 AM EST (15:44 UTC)
Expired: Feb 3, 2009, 2:45 PM EST
In force: 4 hr
Issued by: the Storm Prediction Center

All 46 counties

Dearborn County, IN, Fayette County, IN, Franklin County, IN, Ohio County, IN, Union County, IN, Bath County, KY, Boone County, KY, Boyd County, KY, Bracken County, KY, Campbell County, KY, Carter County, KY, Elliott County, KY, Fleming County, KY, Grant County, KY, Greenup County, KY, Johnson County, KY, Kenton County, KY, Lawrence County, KY, Lewis County, KY, Martin County, KY, Mason County, KY, Morgan County, KY, Nicholas County, KY, Pendleton County, KY, Robertson County, KY, Rowan County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Clermont County, OH, Clinton County, OH, Gallia County, OH, Hamilton County, OH, Highland County, OH, Jackson County, OH, Lawrence County, OH, Pike County, OH, Scioto County, OH, Warren County, OH, Cabell County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Putnam County, WV, Wayne County, WV

The radar

The Cincinnati radar (KILN), 93 km from the middle of the area, began a volume at 15:48 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

Roanoke, VA (KRNK), launched 12:00Z, 3.7 hours before the alert went out and 376 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -210 m²/s²
0-3 km storm-relative helicity: -106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 3, 2:40 PM EST	Mesoscale Discussion	SPC	Lake, LaPorte, Porter	5 hr

Nearby

Mesoscale Discussions in Kentucky, 2009 Mesoscale Discussions in Ohio, 2009 Mesoscale Discussions in West Virginia, 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.