Alert archive / Louisiana / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 522
The Storm Prediction Center issued this severe thunderstorm watch at Oct 2, 2014, 11:36 PM CDT for 24 parishes in Louisiana; Amite County, Pike County, Wilkinson County, Mississippi; Jefferson County, Orange County, Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 2, 2014, 11:36 PM CDT (04:36 UTC)
- Expired
- Oct 3, 2014, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 65 kt
All 29 counties
Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Assumption Parish, LA, Avoyelles Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Vermilion Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pike County, MS, Wilkinson County, MS, Jefferson County, TX, Orange County, TX
The radar
The Lake Charles radar (KLCH), 55 km from the middle of the area, began a volume at 04:38 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 3, 12:30 AM CDT | Severe Thunderstorm Warning | LCH | Beauregard, Calcasieu | 30 min |
| Oct 3, 12:45 AM CDT | Severe Thunderstorm Warning | LCH | Allen, Avoyelles, Beauregard, Evangeline, Rapides, Vernon | 60 min |
| Oct 3, 1:26 AM CDT | Severe Thunderstorm Warning | LCH | Avoyelles | 34 min |
| Oct 3, 1:40 AM CDT | Tornado Warning | LCH | Avoyelles | 35 min |
| Oct 3, 1:51 AM CDT | Severe Thunderstorm Warning | LCH | Avoyelles, Evangeline, Saint Landry | 39 min |
| Oct 3, 1:58 AM CDT | Severe Thunderstorm Warning | LCH | Acadia, Allen, Calcasieu, Evangeline, Jefferson Davis, Saint Landry | 62 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.6 hours before the alert went out and 54 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
- 2657 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 6.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 2, 7:33 PM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Calcasieu, Caldwell, De Soto, Evangeline and 9 more | 57 min |
| Oct 2, 7:35 PM CDT | Mesoscale Discussion | SPC | Bossier, Claiborne, Morehouse, Union, Webster, West Carroll | 115 min |
| Oct 2, 8:04 PM CDT | Severe Thunderstorm Watch | SPC | Beauregard, Caldwell, De Soto, Grant, LaSalle, Natchitoches and 5 more | 7 hr |
| Oct 2, 9:26 PM CDT | Mesoscale Discussion | SPC | East Carroll, Madison, Morehouse, West Carroll | 2 hr |
| Oct 2, 10:11 PM CDT | Tornado Watch | SPC | Catahoula, Concordia, Franklin, Madison, Richland, Tensas | 5 hr |
| Oct 2, 11:05 PM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 23 more | 55 min |
| Oct 2, 11:50 PM CDT | Mesoscale Discussion | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Richland and 2 more | 115 min |
Nearby
Severe Thunderstorm Watches in Louisiana, 2014Severe Thunderstorm Watches in Mississippi, 2014Severe Thunderstorm Watches in Texas, 2014Every severe thunderstorm watch in 2014
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.