Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 66, NWS New Orleans, LA

April 14, 20214 parishes in Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 14, 2021, 9:09 AM CDT for 4 parishes in Louisiana. It was in force for 36 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 14, 2021, 9:09 AM CDT (14:09 UTC)
Expired: Apr 14, 2021, 9:45 AM CDT
In force: 36 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

What was reported inside it

Time	Report	Where	Remark
Apr 14, 9:30 AM CDT	HAIL 1	1 Sse Baton Rouge, LA	DELAYED REPORT: SOCIAL MEDIA PHOTO OF 1 INCH HAIL NEAR CORPORATE BLVD IN BATON ROUGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.2 hours before the alert went out and 139 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: 1255 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

046 
WUUS54 KLIX 141409
SVRLIX
LAC033-047-063-121-141445-
/O.NEW.KLIX.SV.W.0066.210414T1409Z-210414T1445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New Orleans LA
909 AM CDT Wed Apr 14 2021

The National Weather Service in New Orleans has issued a

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

* Until 945 AM CDT.

* At 909 AM CDT, a severe thunderstorm was located near Addis, or
  near Plaquemine, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Baton Rouge, Zachary, Baker, Plaquemine, Port Allen, Oak Hills
  Place, St. Gabriel, Addis, Brusly, Westminster, Merrydale,
  Inniswold, Watson, Gardere, Brownfields, Greenwell Spring, Village
  St. George and Baton Rouge Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3024 9115 3029 9131 3070 9116 3063 9089
TIME...MOT...LOC 1409Z 203DEG 44KT 3034 9121 

HAIL...1.00IN
WIND...60MPH
 
$$

KLG

1 follow-up statement

965 
WWUS54 KLIX 141442
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
942 AM CDT Wed Apr 14 2021

LAC033-047-063-121-141452-
/O.EXP.KLIX.SV.W.0066.000000T0000Z-210414T1445Z/
West Baton Rouge LA-Livingston LA-Iberville LA-East Baton Rouge LA-
942 AM CDT Wed Apr 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WEST BATON
ROUGE...NORTHWESTERN LIVINGSTON...EAST CENTRAL IBERVILLE AND EAST
BATON ROUGE PARISHES WILL EXPIRE AT 945 AM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

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

LAT...LON 3024 9115 3029 9131 3070 9116 3063 9089
TIME...MOT...LOC 1442Z 203DEG 44KT 3069 9104 

$$

MSW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:36 PM CDT	Special Weather Statement	LIX	Assumption	24 min
Apr 13, 7:37 PM CDT	Special Weather Statement	LIX	Terrebonne	23 min
Apr 13, 9:31 PM CDT	River Flood Warning	LIX	Saint Tammany	4 days
Apr 13, 9:31 PM CDT	River Flood Warning	LIX	Saint Tammany	5 days
Apr 14, 7:29 AM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	46 min
Apr 14, 7:34 AM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	41 min
Apr 14, 8:12 AM CDT	Special Weather Statement	LIX	East Feliciana	48 min
Apr 14, 8:18 AM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	27 min
Apr 14, 8:24 AM CDT	Severe Thunderstorm Warning	LIX	East Feliciana, West Feliciana	12 min
Apr 14, 8:49 AM CDT	Special Weather Statement	LIX	East Baton Rouge, West Baton Rouge	56 min
Apr 14, 9:04 AM CDT	Special Weather Statement	LIX	East Feliciana, Saint Helena	41 min
Apr 14, 9:12 AM CDT	Special Weather Statement	LIX	Terrebonne	33 min
Apr 14, 9:34 AM CDT	Areal Flood Advisory	LIX	Ascension, East Baton Rouge, Livingston, Saint Helena, West Baton Rouge	116 min
Apr 14, 9:36 AM CDT	Special Weather Statement	LIX	Livingston	24 min
Apr 14, 9:41 AM CDT	Special Weather Statement	LIX	Ascension, Assumption, Livingston, Saint James	34 min
Apr 14, 10:01 AM CDT	Special Weather Statement	LIX	Washington	29 min
Apr 14, 10:11 AM CDT	Special Weather Statement	LIX	Jefferson, Lafourche	34 min
Apr 14, 10:15 AM CDT	Special Weather Statement	LIX	Saint Tammany	30 min
Apr 14, 10:16 AM CDT	Special Weather Statement	LIX	Saint James, Saint John the Baptist	29 min
Apr 14, 10:20 AM CDT	Special Weather Statement	LIX	Assumption	25 min
Apr 14, 10:24 AM CDT	River Flood Warning	LIX	Saint Tammany	3 days
Apr 14, 10:28 AM CDT	Special Weather Statement	LIX	East Feliciana, West Feliciana	32 min
Apr 14, 10:30 AM CDT	Special Weather Statement	LIX	Saint Tammany	30 min
Apr 14, 10:47 AM CDT	Special Weather Statement	LIX	Jefferson	28 min
Apr 14, 11:03 AM CDT	Special Marine Warning	LIX		57 min
Apr 14, 11:05 AM CDT	Special Weather Statement	LIX	Livingston, Saint Helena, Tangipahoa	25 min
Apr 14, 11:07 AM CDT	Special Marine Warning	LIX		53 min
Apr 14, 11:21 AM CDT	Special Weather Statement	LIX	Lafourche	24 min
Apr 14, 11:28 AM CDT	Special Weather Statement	LIX	Tangipahoa, Washington	32 min
Apr 14, 11:51 AM CDT	Special Marine Warning	LIX		54 min
Apr 14, 11:58 AM CDT	Special Weather Statement	LIX	Plaquemines	32 min
Apr 14, 12:32 PM CDT	Special Weather Statement	LIX	Lafourche, Saint Charles, Terrebonne	28 min
Apr 14, 1:02 PM CDT	Special Weather Statement	LIX	Jefferson, Lafourche	28 min
Apr 14, 1:11 PM CDT	Special Marine Warning	LIX		64 min
Apr 14, 1:32 PM CDT	Special Weather Statement	LIX	Jefferson	28 min
Apr 14, 2:08 PM CDT	Special Marine Warning	LIX		67 min
Apr 14, 2:55 PM CDT	Special Marine Warning	LIX		65 min
Apr 14, 3:45 PM CDT	Special Weather Statement	LIX	Livingston, Tangipahoa	30 min
Apr 14, 4:12 PM CDT	Special Weather Statement	LIX	Saint Tammany	33 min
Apr 14, 4:24 PM CDT	Special Marine Warning	LIX		96 min
Apr 14, 5:03 PM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	3 hr
Apr 14, 5:26 PM CDT	Special Marine Warning	LIX		105 min
Apr 14, 5:27 PM CDT	Special Weather Statement	LIX	Saint Charles	33 min
Apr 14, 6:21 PM CDT	Special Marine Warning	LIX		114 min
Apr 14, 6:24 PM CDT	Special Weather Statement	LIX	Jefferson	96 min
Apr 14, 6:39 PM CDT	Special Marine Warning	LIX		2 hr
Apr 14, 6:57 PM CDT	Special Marine Warning	LIX		2 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.