Alert archive / Louisiana / Mesoscale Discussions in 2004

Mesoscale Discussion 1065

June 2, 20049 counties in Arkansas; 25 parishes in Louisiana; 7 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2004, 7:28 PM CDT for 9 counties in Arkansas; 25 parishes in Louisiana; 7 counties in Texas. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: Jun 2, 2004, 7:28 PM CDT (00:28 UTC)
Expired: Jun 2, 2004, 9:00 PM CDT
In force: 92 min
Issued by: the Storm Prediction Center

All 41 counties

Ashley County, AR, Bradley County, AR, Calhoun County, AR, Columbia County, AR, Lafayette County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, De Soto Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Cass County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Panola County, TX, Shelby County, TX, Upshur County, TX

The radar

The Shreveport radar (KSHV), 52 km from the middle of the area, began a volume at 00:27 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

Shreveport, LA (KSHV), launched 00:00Z, 0.5 hours before the alert went out and 42 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: 2641 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1343 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.2

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 2, 8:10 PM CDT	Mesoscale Discussion	SPC	Crittenden	65 min
Jun 2, 8:15 PM CDT	Severe Thunderstorm Watch	SPC	Ashley, Bradley, Calhoun, Chicot, Columbia, Desha and 2 more	6 hr
Jun 2, 10:21 PM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 23 more	54 min
Jun 2, 10:40 PM CDT	Severe Thunderstorm Watch	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 25 more	6 hr
Jun 3, 1:28 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Beauregard and 27 more	92 min
Jun 2, 7:11 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Childress, Clay, Cooke, Denton and 9 more	94 min
Jun 3, 3:26 PM CDT	Mesoscale Discussion	SPC	Atascosa, Austin, Bandera, Bastrop, Bell, Bexar and 32 more	94 min

Nearby

Mesoscale Discussions in Louisiana, 2004 Mesoscale Discussions in Arkansas, 2004 Mesoscale Discussions in Texas, 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.