Alert archive / Kentucky / Mesoscale Discussions in 2005

Mesoscale Discussion 667

April 22, 200523 counties in Kentucky; 16 counties in Ohio; 21 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2005, 10:25 PM EDT for 23 counties in Kentucky; 16 counties in Ohio; 21 counties in West Virginia. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Apr 22, 2005, 10:25 PM EDT (02:25 UTC)
Expired: Apr 23, 2005, 12:00 AM EDT
In force: 95 min
Issued by: the Storm Prediction Center

All 60 counties

Boyd County, KY, Breathitt County, KY, Carter County, KY, Clay County, KY, Elliott County, KY, Floyd County, KY, Greenup County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Lewis County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Rowan County, KY, Wolfe County, KY, Adams County, OH, Athens County, OH, Gallia County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Noble County, OH, Perry County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Washington County, OH, Boone County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 81 km from the middle of the area, began a volume at 02:27 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.4 hours before the alert went out and 175 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: 817 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

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
Apr 22, 8:05 PM EDT	Mesoscale Discussion	SPC	Adair, Anderson, Bath, Boone, Bourbon, Boyle and 47 more	85 min
Apr 23, 12:35 PM EDT	Mesoscale Discussion	SPC	Berkeley, Jefferson, Morgan	115 min
Apr 23, 1:10 PM EDT	Severe Thunderstorm Watch	SPC	Berkeley, Jefferson	7 hr
Apr 23, 3:17 PM EDT	Mesoscale Discussion	SPC	Berkeley, Jefferson	88 min

Nearby

Mesoscale Discussions in Kentucky, 2005 Mesoscale Discussions in West Virginia, 2005 Mesoscale Discussions in Ohio, 2005 Every mesoscale discussion in 2005

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.