Alert archive / Alabama / Mesoscale Discussions in 2005

Mesoscale Discussion 451

March 31, 200527 counties in Alabama; 5 counties in Georgia; 25 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2005, 12:53 AM CST for 27 counties in Alabama; 5 counties in Georgia; 25 counties in Mississippi. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued
Mar 31, 2005, 12:53 AM CST (06:53 UTC)
Expired
Mar 31, 2005, 2:30 AM CST
In force
97 min
Issued by
the Storm Prediction Center
All 57 counties

Autauga County, AL, Bibb County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Coosa County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Russell County, AL, Sumter County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Washington County, AL, Wilcox County, AL, Chattahoochee County, GA, Harris County, GA, Marion County, GA, Muscogee County, GA, Talbot County, GA, Amite County, MS, Clarke County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 152 km from the middle of the area, began a volume at 06:54 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

Birmingham, AL (KBMX), launched 00:00Z, 6.9 hours before the alert went out and 179 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 2005-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 135 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, Birmingham, AL at 00:00Z on 2005-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 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
135 J/kg
Mixed-layer CIN
-297 J/kg
Mixed-layer LCL
1597 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 30, 7:56 PM CSTMesoscale DiscussionSPCColbert, Franklin, Lamar, Lauderdale, Lawrence, Limestone and 2 more94 min
Mar 30, 8:55 PM CSTMesoscale DiscussionSPCAutauga, Baldwin, Bibb, Butler, Chilton, Conecuh and 11 more95 min
Mar 30, 9:15 PM CSTSevere Thunderstorm WatchSPCAutauga, Bibb, Butler, Calhoun, Chilton, Clarke and 22 more7 hr
Mar 30, 9:50 PM CSTSevere Thunderstorm WatchSPCBlount, Colbert, Cullman, Fayette, Franklin, Jackson and 10 more6 hr
Mar 30, 10:11 PM CSTMesoscale DiscussionSPCChoctaw, Greene, Pickens, Sumter94 min
Mar 31, 1:15 AM CSTSevere Thunderstorm WatchSPCAutauga, Barbour, Bibb, Blount, Bullock, Butler and 46 more7 hr
Mar 31, 2:08 AM CSTMesoscale DiscussionSPCColbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 4 more97 min
Mar 31, 5:34 AM CSTMesoscale DiscussionSPCAutauga, Bibb, Bullock, Butler, Calhoun, Chambers and 34 more116 min
Mar 31, 6:53 AM CSTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Bullock, Butler, Calhoun and 35 more67 min
Mar 31, 7:30 AM CSTSevere Thunderstorm WatchSPCBarbour, Bullock, Butler, Coffee, Conecuh, Covington and 12 more8 hr
Mar 31, 10:32 AM CSTMesoscale DiscussionSPCBarbour, Bullock, Butler, Coffee, Conecuh, Covington and 7 more88 min
Mar 31, 2:15 PM CSTMesoscale DiscussionSPCBaldwin, Geneva, Houston2 hr
Mar 30, 11:44 PM CSTMesoscale DiscussionSPCBartow, Carroll, Catoosa, Chattahoochee, Chattooga, Cherokee and 36 more91 min
Mar 31, 11:40 AM CSTMesoscale DiscussionSPCAmite, Hancock, Harrison, Pearl River, Pike, Stone and 2 more2 hr
Mar 31, 12:15 PM CSTSevere Thunderstorm WatchSPCAmite, George, Hancock, Harrison, Jackson, Pearl River and 4 more6 hr
Mar 31, 3:27 PM CSTMesoscale DiscussionSPCAmite, George, Hancock, Harrison, Jackson, Pearl River and 4 more93 min
Mar 31, 5:28 PM CSTMesoscale DiscussionSPCAdams, Amite, Forrest, Franklin, George, Greene and 13 more62 min
Mar 31, 5:50 PM CSTSevere Thunderstorm WatchSPCAdams, Amite, Covington, Forrest, Franklin, George and 18 more6 hr

Nearby

Mesoscale Discussions in Alabama, 2005Mesoscale Discussions in Mississippi, 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.