Alert archive / Tennessee / Mesoscale Discussions in 2005

Mesoscale Discussion 356

March 22, 20056 counties in Alabama; Dade County, Georgia; 28 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Mar 22, 2005, 10:11 PM CST for 6 counties in Alabama; Dade County, Georgia; 28 counties in Tennessee. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 22, 2005, 10:11 PM CST (04:11 UTC)
Expired
Mar 23, 2005, 12:15 AM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 35 counties

DeKalb County, AL, Jackson County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Dade County, GA, Bedford County, TN, Bledsoe County, TN, Cannon County, TN, Cheatham County, TN, Coffee County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hickman County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Putnam County, TN, Rutherford County, TN, Sequatchie County, TN, Smith County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Northeast Alabama radar (KHTX), 55 km from the middle of the area, began a volume at 04:13 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

Nashville Metro, TN (KBNA), launched 00:00Z, 4.2 hours before the alert went out and 93 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 2005-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 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 2005-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 264 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
27 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
90 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
Mar 22, 6:09 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Butler, Chilton, Choctaw, Clarke and 22 more2 hr
Mar 22, 6:50 PM CSTTornado WatchSPCAutauga, Bibb, Blount, Butler, Chilton, Choctaw and 26 more7 hr
Mar 22, 7:47 PM CSTMesoscale DiscussionSPCColbert, Cullman, Franklin, Lauderdale, Lawrence, Marion and 1 more88 min
Mar 22, 9:36 PM CSTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Blount, Bullock, Butler and 49 more84 min
Mar 22, 11:30 PM CSTTornado WatchSPCBarbour, Bullock, Butler, Chambers, Coffee, Coosa and 13 more7 hr
Mar 22, 11:37 PM CSTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Chambers, Coffee and 19 more83 min
Mar 23, 12:35 AM CSTTornado WatchSPCChambers, Lee, Randolph7 hr
Mar 23, 1:27 AM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Butler, Chilton, Choctaw and 27 more63 min
Mar 23, 2:11 AM CSTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Coffee, Coosa, Covington and 13 more2 hr
Mar 22, 6:24 PM CSTMesoscale DiscussionSPCChatham36 min
Mar 22, 7:39 PM CSTMesoscale DiscussionSPCBerrien, Brooks, Colquitt, Cook, Decatur, Grady and 8 more36 min
Mar 23, 1:35 AM CSTMesoscale DiscussionSPCBrooks, Decatur, Grady, Lowndes, Seminole, Thomas85 min
Mar 23, 3:16 AM CSTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 36 more89 min
Mar 23, 10:41 AM CSTMesoscale DiscussionSPCAnderson, Blount, Bradley, Campbell, Carter, Claiborne and 22 more64 min

Nearby

Mesoscale Discussions in Tennessee, 2005Mesoscale Discussions in Alabama, 2005Mesoscale Discussions in Georgia, 2005Every 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.