Alert archive / Kentucky / Mesoscale Discussions in 2011

Mesoscale Discussion 715

May 10, 201123 counties in Kentucky; 13 counties in Ohio; 15 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 10, 2011, 7:17 PM EDT for 23 counties in Kentucky; 13 counties in Ohio; 15 counties in West Virginia. It was in force for 28 min.

The area

The outline as issued.

The facts

Issued
May 10, 2011, 7:17 PM EDT (23:17 UTC)
Expired
May 10, 2011, 7:45 PM EDT
In force
28 min
Issued by
the Storm Prediction Center
All 51 counties

Bath County, KY, Boyd County, KY, Breathitt County, KY, Carter County, KY, Elliott County, KY, Fleming County, KY, Floyd County, KY, Greenup County, KY, Johnson County, KY, Knott County, KY, Lawrence County, KY, Letcher County, KY, Lewis County, KY, Magoffin County, KY, Martin County, KY, Mason County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Perry County, KY, Pike County, KY, Rowan County, KY, Wolfe County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Gallia County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Boone County, WV, Cabell County, WV, Calhoun County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Putnam County, WV, Raleigh County, WV, Roane County, WV, Wayne County, WV, Wirt County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 78 km from the middle of the area, began a volume at 23:17 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.3 hours before the alert went out and 146 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2011-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2011-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
9 J/kg
Mixed-layer CIN
-487 J/kg
Mixed-layer LCL
1473 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
252 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.2

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.

IssuedProductOfficeCountiesLasted
May 10, 11:21 AM EDTMesoscale DiscussionSPCAnderson, Bath, Boone, Bourbon, Boyd, Bracken and 51 more114 min
May 10, 1:10 PM EDTSevere Thunderstorm WatchSPCAnderson, Bath, Bell, Boone, Bourbon, Boyd and 74 more7 hr
May 10, 4:32 PM EDTMesoscale DiscussionSPCBath, Boyd, Bracken, Campbell, Carter, Elliott and 19 more88 min
May 10, 7:45 PM EDTSevere Thunderstorm WatchSPCBath, Boyd, Carter, Elliott, Fleming, Floyd and 10 more5 hr
May 10, 3:31 PM EDTSevere Thunderstorm WatchSPCAllen, Paulding, Putnam, Van Wert4 hr
May 10, 3:20 PM EDTSevere Thunderstorm WatchSPCMcDowell, Mercer, Monroe, Raleigh, Summers, Wyoming8 hr
May 10, 6:02 PM EDTMesoscale DiscussionSPCLogan, McDowell58 min

Nearby

Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in West Virginia, 2011Mesoscale Discussions in Ohio, 2011Every mesoscale discussion in 2011

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.