Alert archive / Kentucky / Mesoscale Discussions in 2011

Mesoscale Discussion 165

February 28, 20116 states

The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2011, 1:05 AM CST for 6 states. It was in force for 25 min.

The area

The outline as issued.

The facts

Issued
Feb 28, 2011, 1:05 AM CST (07:05 UTC)
Expired
Feb 28, 2011, 1:30 AM CST
In force
25 min
Issued by
the Storm Prediction Center
All 82 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Mississippi County, AR, Poinsett County, AR, Woodruff County, AR, Alexander County, IL, Gallatin County, IL, Hardin County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Clark County, IN, Crawford County, IN, Floyd County, IN, Harrison County, IN, Perry County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Scott County, MO, Stoddard County, MO, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Shelby County, TN, Stewart County, TN, Tipton County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 71 km from the middle of the area, began a volume at 07:08 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

Nashville Metro, TN (KBNA), launched 00:00Z, 7.1 hours before the alert went out and 204 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, Nashville Metro, TN at 00:00Z on 2011-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 184 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, Nashville Metro, TN at 00:00Z on 2011-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 245 square meters per square second.1939587897117Sfc1 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
184 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1385 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
245 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

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
Feb 27, 8:07 PM CSTMesoscale DiscussionSPCCrawford, Franklin, Howard, Little River, Logan, Madison and 7 more53 min
Feb 27, 10:04 PM CSTTornado WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 41 more6 hr
Feb 27, 11:49 PM CSTMesoscale DiscussionSPCClark, Conway, Crawford, Franklin, Garland, Hempstead and 20 more86 min
Feb 28, 1:33 AM CSTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more7 hr
Feb 28, 5:28 AM CSTMesoscale DiscussionSPCAshley, Chicot, Desha, Phillips62 min
Feb 28, 5:59 AM CSTTornado WatchSPCLee, Phillips7 hr
Feb 27, 8:25 PM CSTMesoscale DiscussionSPCAlexander, Bond, Christian, Clark, Clay, Clinton and 39 more65 min
Feb 27, 8:49 PM CSTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 10 more6 hr
Feb 27, 9:40 PM CSTTornado WatchSPCAlexander, Bond, Calhoun, Clinton, Edwards, Fayette and 27 more6 hr
Feb 27, 10:41 PM CSTMesoscale DiscussionSPCBond, Clinton, Franklin, Jackson, Jefferson, Jersey and 9 more94 min
Feb 27, 11:46 PM CSTTornado WatchSPCClark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more5 hr
Feb 28, 12:28 AM CSTMesoscale DiscussionSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more32 min
Feb 28, 12:40 AM CSTTornado WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more6 hr
Feb 28, 2:32 AM CSTMesoscale DiscussionSPCBartholomew, Brown, Dearborn, Decatur, Fayette, Franklin and 14 more58 min
Feb 28, 3:25 AM CSTMesoscale DiscussionSPCClark, Floyd, Harrison, Perry65 min
Feb 28, 4:31 AM CSTMesoscale DiscussionSPCBath, Boyd, Breathitt, Carter, Clay, Elliott and 31 more29 min
Feb 28, 4:47 AM CSTTornado WatchSPCBath, Bell, Boyd, Breathitt, Carter, Clay and 31 more5 hr
Feb 27, 7:03 PM CSTMesoscale DiscussionSPCBarton, Camden, Cedar, Christian, Dade, Dallas and 17 more87 min
Feb 27, 7:24 PM CSTTornado WatchSPCBarry, Barton, Benton, Camden, Cedar, Christian and 28 more7 hr
Feb 28, 5:47 AM CSTMesoscale DiscussionSPCAnderson, Bedford, Bledsoe, Campbell, Cannon, Cheatham and 54 more28 min
Feb 28, 11:25 AM CSTMesoscale DiscussionSPCAnderson, Bedford, Bledsoe, Blount, Bradley, Campbell and 58 more95 min
Feb 28, 12:29 PM CSTTornado WatchSPCBledsoe, Blount, Bradley, Carter, Cocke, Coffee and 29 more7 hr

Nearby

Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in Tennessee, 2011Mesoscale Discussions in Indiana, 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.