Alert archive / Alabama / Mesoscale Discussions in 2005

Mesoscale Discussion 2504

November 28, 200513 counties in Alabama; Heard County, Troup County, Georgia

The Storm Prediction Center issued this mesoscale discussion at Nov 28, 2005, 7:49 PM CST for 13 counties in Alabama; Heard County, Troup County, Georgia. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Nov 28, 2005, 7:49 PM CST (01:49 UTC)
Expired
Nov 28, 2005, 9:15 PM CST
In force
86 min
Issued by
the Storm Prediction Center

Counties Bullock County, AL, Chambers County, AL, Clay County, AL, Coosa County, AL, Crenshaw County, AL, Elmore County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Tallapoosa County, AL, Heard County, GA, Troup County, GA

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.8 hours before the alert went out and 120 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, Birmingham, AL at 00:00Z on 2005-11-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Birmingham, AL at 00:00Z on 2005-11-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
659 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
242 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

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
Nov 28, 10:28 PM CSTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Coffee, Lee, Macon and 4 more62 min
Nov 28, 10:41 PM CSTMesoscale DiscussionSPCThomas94 min
Nov 29, 4:50 AM CSTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baldwin, Ben Hill, Berrien and 55 more85 min

Nearby

Mesoscale 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.