Alert archive / Mississippi / Mesoscale Discussions in 2005

Mesoscale Discussion 347

March 22, 20054 counties in Alabama; 29 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Mar 22, 2005, 3:43 PM CST for 4 counties in Alabama; 29 counties in Mississippi. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 22, 2005, 3:43 PM CST (21:43 UTC)
Expired
Mar 22, 2005, 5:45 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 33 counties

Choctaw County, AL, Greene County, AL, Sumter County, AL, Washington County, AL, Amite County, MS, Attala 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, Leake County, MS, Lincoln County, MS, Madison 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, Winston County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 47 km from the middle of the area, began a volume at 21:44 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

Jackson, MS (KJAN), launched 12:00Z, 9.7 hours before the alert went out and 57 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, Jackson, MS at 12:00Z on 2005-03-22Temperature 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, Jackson, MS at 12:00Z on 2005-03-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 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
759 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
265 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 22, 6:55 AM CSTTornado WatchSPCBaldwin, Butler, Choctaw, Clarke, Conecuh, Dallas and 7 more6 hr
Mar 22, 7:38 AM CSTMesoscale DiscussionSPCBarbour, Bullock, Coffee, Covington, Crenshaw, Dale and 5 more67 min
Mar 22, 7:40 AM CSTTornado WatchSPCBarbour, Bullock, Coffee, Crenshaw, Dale, Geneva and 4 more6 hr
Mar 22, 8:49 AM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 30 more26 min
Mar 22, 9:15 AM CSTSevere Thunderstorm WatchSPCAutauga, Bibb, Calhoun, Chambers, Chilton, Clay and 23 more6 hr
Mar 22, 9:44 AM CSTMesoscale DiscussionSPCBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 8 more61 min
Mar 22, 12:51 PM CSTMesoscale DiscussionSPCBarbour, Bullock, Butler, Coffee, Covington, Crenshaw and 8 more54 min
Mar 22, 1:20 PM CSTTornado WatchSPCHenry, Houston7 hr
Mar 22, 4:50 PM CSTSevere Thunderstorm WatchSPCColbert, Cullman, Franklin, Lauderdale, Lawrence, Marion and 1 more5 hr
Mar 22, 1:45 AM CSTTornado WatchSPCAdams, Attala, Carroll, Claiborne, Copiah, Franklin and 15 more6 hr
Mar 22, 3:00 AM CSTTornado WatchSPCWilkinson5 hr
Mar 22, 3:57 AM CSTMesoscale DiscussionSPCAdams, Attala, Carroll, Claiborne, Copiah, Franklin and 14 more2 hr
Mar 22, 5:59 AM CSTMesoscale DiscussionSPCAdams, Amite, Attala, Carroll, Claiborne, Copiah and 8 more2 hr
Mar 22, 11:55 AM CSTMesoscale DiscussionSPCBenton, Bolivar, Carroll, Coahoma, DeSoto, Grenada and 11 more95 min
Mar 22, 12:55 PM CSTSevere Thunderstorm WatchSPCAttala, Bolivar, Calhoun, Carroll, Choctaw, Coahoma and 20 more7 hr
Mar 22, 2:39 PM CSTMesoscale DiscussionSPCCoahoma, DeSoto, Lafayette, Marshall, Panola, Quitman and 2 more96 min
Mar 22, 4:27 PM CSTMesoscale DiscussionSPCAlcorn, Benton, Marshall, Tippah33 min

Nearby

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