Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 52, NWS New Orleans, LA

April 13, 20215 parishes in Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 13, 2021, 10:33 AM CDT for 5 parishes in Louisiana. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 13, 2021, 10:33 AM CDT (15:33 UTC)
Expired: Apr 13, 2021, 11:00 AM CDT
In force: 27 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Ascension Parish, LA, East Baton Rouge Parish, LA, Iberville Parish, LA, Livingston Parish, LA, West Baton Rouge Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.6 hours before the alert went out and 138 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1989 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

404 
WUUS54 KLIX 131533
SVRLIX
LAC005-033-047-063-121-131600-
/O.NEW.KLIX.SV.W.0052.210413T1533Z-210413T1600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
1033 AM CDT Tue Apr 13 2021

The National Weather Service in New Orleans has issued a

* Severe Thunderstorm Warning for...
  Northwestern Ascension Parish in southeastern Louisiana...
  Southeastern West Baton Rouge Parish in southeastern Louisiana...
  West central Livingston Parish in southeastern Louisiana...
  Southeastern Iberville Parish in southeastern Louisiana...
  South central East Baton Rouge Parish in southeastern Louisiana...

* Until 1100 AM CDT.

* At 1033 AM CDT, a severe thunderstorm was located near Bayou
  Sorrel, or near Plaquemine, moving northeast at 40 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Baton Rouge, Denham Springs, Plaquemine, Oak Hills Place, St.
  Gabriel, White Castle, French Settlement, Port Vincent,
  Westminster, Old Jefferson, Inniswold, Prairieville, Village St.
  George, Shenandoah, Gardere and Carville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in New Orleans.

&&

LAT...LON 3009 9125 3019 9135 3054 9101 3033 9080
TIME...MOT...LOC 1533Z 229DEG 35KT 3019 9125 

HAIL...1.50IN
WIND...60MPH
 
$$

PG

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 4:14 AM CDT	Flash Flood Watch	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Orleans, Pointe Coupee and 9 more	5 days
Apr 13, 9:18 AM CDT	Severe Thunderstorm Warning	LIX	Iberville, Pointe Coupee, West Feliciana	21 min
Apr 13, 9:38 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Assumption, East Baton Rouge, Iberville	13 min
Apr 13, 9:47 AM CDT	Special Weather Statement	LIX	West Baton Rouge	43 min
Apr 13, 9:56 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Iberville, Livingston, Saint James	19 min
Apr 13, 10:13 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana	17 min
Apr 13, 10:26 AM CDT	Special Weather Statement	LIX	Ascension	34 min
Apr 13, 10:32 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Livingston, Saint James, Saint John the Baptist	28 min
Apr 13, 10:35 AM CDT	Special Weather Statement	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Feliciana	55 min
Apr 13, 10:49 AM CDT	Severe Thunderstorm Warning	LIX	Assumption	26 min
Apr 13, 10:59 AM CDT	Special Weather Statement	LIX	Ascension, East Baton Rouge, Livingston	46 min
Apr 13, 11:11 AM CDT	Special Weather Statement	LIX	Terrebonne	49 min
Apr 13, 11:14 AM CDT	Severe Thunderstorm Warning	LIX	Assumption, Lafourche, Saint James, Saint John the Baptist	31 min
Apr 13, 11:18 AM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa	27 min
Apr 13, 11:41 AM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles, Saint James, Saint John the Baptist	15 min
Apr 13, 11:45 AM CDT	Severe Thunderstorm Warning	LIX	Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	30 min
Apr 13, 11:49 AM CDT	Special Weather Statement	LIX	Livingston	26 min
Apr 13, 11:53 AM CDT	Special Weather Statement	LIX	Ascension	37 min
Apr 13, 11:54 AM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Terrebonne	36 min
Apr 13, 12:05 PM CDT	Special Weather Statement	LIX	Jefferson	55 min
Apr 13, 12:08 PM CDT	Special Marine Warning	LIX		67 min
Apr 13, 12:14 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa	14 min
Apr 13, 12:23 PM CDT	Special Marine Warning	LIX		52 min
Apr 13, 12:27 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles	11 min
Apr 13, 12:31 PM CDT	Special Weather Statement	LIX	Saint James, Saint John the Baptist	59 min
Apr 13, 1:02 PM CDT	Special Weather Statement	LIX	Terrebonne	43 min
Apr 13, 1:14 PM CDT	Special Weather Statement	LIX	Jefferson, Lafourche	31 min
Apr 13, 1:21 PM CDT	Areal Flood Advisory	LIX	Ascension	114 min
Apr 13, 1:29 PM CDT	Special Marine Warning	LIX		61 min
Apr 13, 1:40 PM CDT	Special Weather Statement	LIX	Saint Charles	35 min
Apr 13, 1:44 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche, Saint Charles, Terrebonne	31 min
Apr 13, 1:54 PM CDT	Flash Flood Warning	LIX	Jefferson	111 min
Apr 13, 2:07 PM CDT	Flash Flood Warning	LIX	Saint Charles	83 min
Apr 13, 2:14 PM CDT	Special Weather Statement	LIX	Lafourche, Saint Charles	61 min
Apr 13, 2:17 PM CDT	Special Weather Statement	LIX	Jefferson	28 min
Apr 13, 2:22 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche	38 min
Apr 13, 2:27 PM CDT	Special Marine Warning	LIX		63 min
Apr 13, 2:48 PM CDT	Special Weather Statement	LIX	Jefferson, Lafourche, Plaquemines, Terrebonne	57 min
Apr 13, 2:57 PM CDT	Special Marine Warning	LIX		63 min
Apr 13, 3:30 PM CDT	Small Craft Advisory	LIX		3 hr
Apr 13, 3:45 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson	15 min
Apr 13, 3:58 PM CDT	Special Marine Warning	LIX		62 min
Apr 13, 4:30 PM CDT	Special Marine Warning	LIX		90 min
Apr 13, 4:42 PM CDT	Special Marine Warning	LIX		93 min
Apr 13, 5:05 PM CDT	Special Marine Warning	LIX		55 min
Apr 13, 5:58 PM CDT	Special Marine Warning	LIX		70 min
Apr 13, 6:01 PM CDT	Special Marine Warning	LIX		89 min
Apr 13, 6:07 PM CDT	Special Marine Warning	LIX		67 min
Apr 13, 6:12 PM CDT	Special Marine Warning	LIX		65 min
Apr 13, 6:17 PM CDT	Wind Advisory	LIX	Assumption, Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany	6 hr
Apr 13, 6:26 PM CDT	Special Weather Statement	LIX	Livingston	34 min
Apr 13, 6:27 PM CDT	Special Weather Statement	LIX	Saint James	33 min
Apr 13, 6:44 PM CDT	Special Weather Statement	LIX	Assumption	46 min
Apr 13, 6:56 PM CDT	Gale Warning	LIX		9 hr
Apr 13, 6:56 PM CDT	Small Craft Advisory	LIX		33 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2021 Every severe thunderstorm warning in 2021

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.