Alert archive / Mississippi / Mesoscale Discussions in 2004
Mesoscale Discussion 1049
The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2004, 5:45 AM CDT for 22 parishes in Louisiana; 25 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 2, 2004, 5:45 AM CDT (10:45 UTC)
- Expired
- Jun 2, 2004, 7:45 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 47 counties
Ascension Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Franklin Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Madison Parish, LA, Orleans Parish, LA, Pointe Coupee Parish, LA, Richland Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hancock County, MS, Hinds County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Pearl River County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Warren County, MS, Wilkinson County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.8 hours before the alert went out and 107 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.
- Mixed-layer CAPE
- 1259 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 923 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
886 ACUS11 KWNS 021046 SWOMCD SPC MCD 021045 MSZ000-LAZ000-021245- MESOSCALE DISCUSSION 1049 NWS STORM PREDICTION CENTER NORMAN OK 0545 AM CDT WED JUN 02 2004 AREAS AFFECTED...SERN LA/SRN MS CONCERNING...SEVERE THUNDERSTORM WATCH 376... VALID 021045Z - 021245Z LARGE BOWED SQUALL LINE WAS MOVING EAST ACROSS SERN LA AND SRN MS AT ABOUT 40KT. CONVECTION HAS RECENTLY INTENSIFIED ALONG THE OUTFLOW MOVING INTO SERN LA AND AIRMASS IN THIS AREA REMAINS VERY MOIST AND UNSTABLE. FARTHER NORTH...ACROSS MS...AIRMASS WAS A SLIGHTLY MORE STABLE. HOWEVER...STRONG MID LEVEL REAR INFLOW JET OF 50-60KT WAS NOTED ON WINNFIELD PROFILER AND WAS MOVING INTO THIS REGION. PRIMARY THREAT ALONG THE LINE WILL REMAIN DAMAGING WINDS. AT CURRENT MOTION...STORMS SHOULD REACH ERN EDGE OF SVR TSTM WATCH 376 SHORTLY AFTER 12Z. INTENSITY TRENDS WILL CONTINUE TO BE MONITORED AND A NEW WATCH MAY BE NEEDED IF STORM ORGANIZATION AND STRENGTH IS MAINTAINED. ..CARBIN.. 06/02/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MOB...JAN...LIX...LCH...SHV... 29998915 30009185 32719194 32718921
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, 10:45 PM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Bienville, Bossier, Caddo, Caldwell and 16 more | 60 min |
| 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, 5:30 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 |
Nearby
Mesoscale Discussions in Mississippi, 2004Mesoscale Discussions in Louisiana, 2004Every 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.