Alert archive / Louisiana / Mesoscale Discussions in 2005

Mesoscale Discussion 1376

June 17, 2005Baldwin County, Mobile County, Washington County, Alabama; 9 parishes in Louisiana; 4 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2005, 3:41 PM CDT for Baldwin County, Mobile County, Washington County, Alabama; 9 parishes in Louisiana; 4 counties in Mississippi. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 17, 2005, 3:41 PM CDT (20:41 UTC)
Expired: Jun 17, 2005, 5:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Baldwin County, AL, Mobile County, AL, Washington County, AL, Assumption Parish, LA, Iberia Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, St. Mary Parish, LA, Terrebonne Parish, LA, George County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.7 hours before the alert went out and 19 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: 276 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 1470 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
Jun 17, 12:50 AM CDT	Severe Thunderstorm Watch	SPC	Bossier, Caddo, De Soto, Natchitoches, Red River, Sabine	6 hr
Jun 17, 6:45 AM CDT	Severe Thunderstorm Watch	SPC	Bienville, Caldwell, Catahoula, Claiborne, Concordia, East Carroll and 14 more	4 hr
Jun 17, 10:16 AM CDT	Mesoscale Discussion	SPC	Ascension, Avoyelles, Caldwell, Catahoula, Concordia, East Baton Rouge and 17 more	119 min
Jun 17, 11:00 AM CDT	Severe Thunderstorm Watch	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 29 more	7 hr
Jun 17, 5:01 PM CDT	Mesoscale Discussion	SPC	De Soto	59 min

Nearby

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