Alert archive / Louisiana / Mesoscale Discussions in 2004

Mesoscale Discussion 1047

June 1, 200422 parishes in Louisiana; Adams County, Wilkinson County, Mississippi; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2004, 10:45 PM CDT for 22 parishes in Louisiana; Adams County, Wilkinson County, Mississippi; 22 counties in Texas. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2004, 10:45 PM CDT (03:45 UTC)
Expired: Jun 1, 2004, 11:45 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center

All 46 counties

Allen Parish, LA, Avoyelles Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, De Soto Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Saint Landry Parish, LA, Vernon Parish, LA, West Feliciana Parish, LA, Winn Parish, LA, Adams County, MS, Wilkinson County, MS, Anderson County, TX, Angelina County, TX, Camp County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 55 km from the middle of the area, began a volume at 03:48 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.

Severe Thunderstorm Watch 375Jun 1, 11:20 PM CDT

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 3.8 hours before the alert went out and 64 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: 3213 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

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
Jun 1, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	Caddo	6 hr
Jun 1, 11:20 PM CDT	Severe Thunderstorm Watch	SPC	Acadia, Allen, Avoyelles, Beauregard, Bienville, Caldwell and 12 more	5 hr
Jun 2, 1:34 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Beauregard, Bienville, Caddo and 14 more	116 min
Jun 2, 3:30 AM CDT	Severe Thunderstorm Watch	SPC	Ascension, Catahoula, Concordia, East Baton Rouge, East Feliciana, Franklin and 16 more	5 hr
Jun 2, 5:45 AM CDT	Mesoscale Discussion	SPC	Ascension, Catahoula, Concordia, East Baton Rouge, East Feliciana, Franklin and 16 more	2 hr
Jun 2, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	Bossier, Caddo, Claiborne, Webster	6 hr
Jun 2, 7:41 AM CDT	Mesoscale Discussion	SPC	Clarke, George, Greene, Harrison, Jackson, Lauderdale and 3 more	94 min
Jun 2, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	Alcorn, Benton, DeSoto, Lafayette, Marshall, Panola and 6 more	5 hr
Jun 2, 11:26 AM CDT	Mesoscale Discussion	SPC	Archer, Austin, Bastrop, Bell, Bosque, Brazoria and 39 more	2 hr
Jun 2, 1:40 PM CDT	Mesoscale Discussion	SPC	Dallam	3 hr
Jun 2, 2:50 PM CDT	Severe Thunderstorm Watch	SPC	Clay	4 hr
Jun 2, 3:19 PM CDT	Mesoscale Discussion	SPC	Borden, Briscoe, Cottle, Crosby, Dawson, Dickens and 21 more	116 min
Jun 2, 3:20 PM CDT	Tornado Watch	SPC	Armstrong, Carson, Collingsworth, Donley, Gray, Hansford and 10 more	7 hr
Jun 2, 4:10 PM CDT	Severe Thunderstorm Watch	SPC	Andrews, Borden, Cottle, Crosby, Dawson, Dickens and 16 more	5 hr
Jun 2, 4:49 PM CDT	Mesoscale Discussion	SPC	Bowie, Lamar, Red River	56 min
Jun 2, 5:50 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Archer, Baylor, Bosque, Callahan, Camp and 48 more	6 hr
Jun 2, 6:08 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 23 more	67 min

Nearby

Mesoscale Discussions in Louisiana, 2004 Mesoscale Discussions in Texas, 2004 Mesoscale Discussions in Mississippi, 2004 Every mesoscale discussion in 2004

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.