Alert archive / Louisiana / Mesoscale Discussions in 2006
Mesoscale Discussion 698
The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2006, 2:11 AM CDT for Baldwin County, Mobile County, Alabama; 16 parishes in Louisiana; 15 counties in Mississippi. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2006, 2:11 AM CDT (07:11 UTC)
- Expired
- Apr 30, 2006, 3:45 AM CDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
All 33 counties
Baldwin County, AL, Mobile County, AL, Ascension Parish, LA, East Baton Rouge Parish, LA, East Feliciana 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, Washington Parish, LA, Amite County, MS, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Lamar County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Stone County, MS, Walthall County, MS, Wilkinson County, MS
The radar
The Mobile radar (KMOB), 120 km from the middle of the area, began a volume at 07:14 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 7.2 hours before the alert went out and 56 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
- 153 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 699 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 234 m²/s²
- 0-3 km storm-relative helicity
- 397 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:14 PM CDT | Mesoscale Discussion | SPC | Assumption, Jefferson, Lafourche, Orleans, Saint Bernard, Saint Charles and 6 more | 91 min |
| Apr 30, 6:03 AM CDT | Tornado Watch | SPC | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles, Saint Tammany | 4 hr |
| Apr 30, 7:40 AM CDT | Mesoscale Discussion | SPC | Orleans, Plaquemines, Saint Bernard, Saint Tammany, Washington | 65 min |
Nearby
Mesoscale Discussions in Louisiana, 2006Mesoscale Discussions in Mississippi, 2006Mesoscale Discussions in Alabama, 2006Every 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.