Alert archive / Mississippi / Mesoscale Discussions in 2007

Mesoscale Discussion 2145

November 14, 200713 counties in Alabama; 16 counties in Mississippi; 13 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Nov 14, 2007, 6:36 PM CST for 13 counties in Alabama; 16 counties in Mississippi; 13 counties in Tennessee. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Nov 14, 2007, 6:36 PM CST (00:36 UTC)
Expired: Nov 14, 2007, 8:00 PM CST
In force: 84 min
Issued by: the Storm Prediction Center

All 42 counties

Cullman County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Lamar County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Morgan County, AL, Pickens County, AL, Walker County, AL, Winston County, AL, Attala County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Leflore County, MS, Lowndes County, MS, Monroe County, MS, Montgomery County, MS, Noxubee County, MS, Oktibbeha County, MS, Webster County, MS, Winston County, MS, Bledsoe County, TN, Coffee County, TN, Cumberland County, TN, Franklin County, TN, Grundy County, TN, Lincoln County, TN, Marion County, TN, Moore County, TN, Rhea County, TN, Sequatchie County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Columbus AFB radar (KGWX), 57 km from the middle of the area, began a volume at 00:39 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

Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 159 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 146 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 981 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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Nearby

Mesoscale Discussions in Mississippi, 2007 Mesoscale Discussions in Alabama, 2007 Mesoscale Discussions in Tennessee, 2007 Every mesoscale discussion in 2007

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.