Alert archive / Louisiana / Mesoscale Discussions in 2013
Mesoscale Discussion 379
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2013, 1:10 AM CDT for 12 parishes in Louisiana; Jasper County, Newton County, Orange County, Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2013, 1:10 AM CDT (06:10 UTC)
- Expired
- Apr 3, 2013, 3:45 AM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
Counties Acadia Parish, LA, Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Vermilion Parish, LA, Jasper County, TX, Newton County, TX, Orange County, TX
The radar
The Lake Charles radar (KLCH), 30 km from the middle of the area, began a volume at 06:13 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 nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.2 hours before the alert went out and 29 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1267 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
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 3, 4:57 AM CDT | Mesoscale Discussion | SPC | Iberia, Plaquemines, St. Mary, Terrebonne | 3 hr |
| Apr 2, 7:35 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 43 more | 85 min |
| Apr 2, 8:15 PM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 13 more | 60 min |
| Apr 2, 10:06 PM CDT | Mesoscale Discussion | SPC | Brazoria, Chambers, Fort Bend, Galveston, Harris | 54 min |
| Apr 2, 10:26 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bexar, Blanco, Comal, Dimmit, Duval and 11 more | 64 min |
| Apr 2, 10:47 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bee, Dimmit, Duval, Frio, Jim Wells and 4 more | 5 hr |
| Apr 3, 1:36 AM CDT | Mesoscale Discussion | SPC | Aransas, Austin, Bee, Brazoria, Calhoun, Chambers and 13 more | 114 min |
| Apr 3, 7:59 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 20 more | 91 min |
Nearby
Mesoscale Discussions in Louisiana, 2013Mesoscale Discussions in Texas, 2013Every mesoscale discussion in 2013
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.