Alert archive / Alabama / Mesoscale Discussions in 2006

Mesoscale Discussion 2134

October 17, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Oct 17, 2006, 5:23 AM CDT for 4 states. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Oct 17, 2006, 5:23 AM CDT (10:23 UTC)
Expired: Oct 17, 2006, 7:00 AM CDT
In force: 97 min
Issued by: the Storm Prediction Center

All 50 counties

Baldwin County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Dallas County, AL, Escambia County, AL, Greene County, AL, Hale County, AL, Marengo County, AL, Mobile County, AL, Monroe County, AL, Perry County, AL, Sumter County, AL, Washington County, AL, Wilcox County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, Ascension Parish, LA, Assumption Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jones County, MS, Lamar County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 53 km from the middle of the area, began a volume at 10:24 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.4 hours before the alert went out and 98 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: 607 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 687 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 337 m²/s²
0-3 km storm-relative helicity: 463 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 6.4

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.

Issued	Product	Office	Counties	Lasted
Oct 16, 7:22 PM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Choctaw, Clarke, Conecuh, Dallas and 7 more	53 min
Oct 16, 9:28 PM CDT	Mesoscale Discussion	SPC	Colbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 5 more	32 min
Oct 16, 11:29 PM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Choctaw, Clarke, Conecuh, Dallas and 9 more	61 min
Oct 17, 1:01 AM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 12 more	89 min
Oct 17, 1:38 AM CDT	Tornado Watch	SPC	Baldwin, Choctaw, Clarke, Conecuh, Dallas, Escambia and 6 more	7 hr
Oct 17, 7:26 AM CDT	Mesoscale Discussion	SPC	Autauga, Baldwin, Butler, Choctaw, Clarke, Conecuh and 16 more	94 min
Oct 17, 5:15 PM CDT	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Jefferson and 7 more	60 min
Oct 16, 9:44 PM CDT	Tornado Watch	SPC	Calhoun, Carroll, Chickasaw, Choctaw, Clay, Grenada and 12 more	7 hr
Oct 17, 12:01 AM CDT	Mesoscale Discussion	SPC	Chickasaw, Choctaw, Clay, Itawamba, Lee, Lowndes and 5 more	59 min

Nearby

Mesoscale Discussions in Alabama, 2006 Mesoscale Discussions in Louisiana, 2006 Mesoscale Discussions in Mississippi, 2006 Every mesoscale discussion in 2006

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.