Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS New Orleans, LA

April 24, 20215 parishes in Louisiana

NWS New Orleans, LA issued this special weather statement at Apr 24, 2021, 3:21 AM CDT for 5 parishes in Louisiana. It was in force for 39 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 24, 2021, 3:21 AM CDT (08:21 UTC)
Expired: Apr 24, 2021, 4:00 AM CDT
In force: 39 min
Issued by: NWS New Orleans, LA

Counties Ascension Parish, LA, East Baton Rouge Parish, LA, Livingston Parish, LA, Saint John the Baptist Parish, LA, Tangipahoa Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.4 hours before the alert went out and 107 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: 873 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

829 
WWUS84 KLIX 240821
SPSLIX

Special Weather Statement
National Weather Service New Orleans LA
321 AM CDT Sat Apr 24 2021

LAZ037-046>050-056>058-071-072-075-240900-
Livingston-Iberville-Ascension-St. Helena-Northern
Tangipahoa-Northwest St. Tammany-Southern Tangipahoa-Assumption-St.
John The Baptist-West Baton Rouge-St. James-East Baton Rouge-
321 AM CDT Sat Apr 24 2021

...STRONG WINDS IN THE WAKE OF A LINE OF THUNDERSTORMS WILL AFFECT 
PORTIONS OF METRO BATON ROUGE... 

An area of strong winds gusting to 50 mph will continue to affect 
portions of metro Baton Rouge over the next hour.  These strong 
winds could result in localized power outages, falling large tree 
branches, and cause driving difficulties for high profile vehicles. 

A Tornado Watch remains in effect until 400 AM CDT for southeastern
Louisiana.

LAT...LON 3053 9131 3089 9046 3058 9016 3022 9039
      3019 9043 3014 9044 2992 9123 2998 9126
      3027 9107
TIME...MOT...LOC 0818Z 248DEG 51KT 3050 9121 3030 9102 2999 9122 

$$

PG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 9:28 PM CDT	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	47 min
Apr 23, 10:12 PM CDT	Special Weather Statement	LIX	East Baton Rouge, West Baton Rouge	33 min
Apr 23, 10:34 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston, West Baton Rouge	26 min
Apr 23, 10:47 PM CDT	Tornado Warning	LIX	East Baton Rouge, Livingston, West Baton Rouge	28 min
Apr 23, 11:14 PM CDT	Severe Thunderstorm Warning	LIX	Livingston, Saint Helena, Tangipahoa	31 min
Apr 23, 11:46 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	44 min
Apr 24, 12:28 AM CDT	Severe Thunderstorm Warning	LIX	Washington	47 min
Apr 24, 12:56 AM CDT	Special Weather Statement	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana	64 min
Apr 24, 1:36 AM CDT	Special Weather Statement	LIX	Livingston	24 min
Apr 24, 1:43 AM CDT	Special Weather Statement	LIX	Washington	32 min
Apr 24, 1:50 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena, Tangipahoa	25 min
Apr 24, 2:17 AM CDT	Special Weather Statement	LIX	Ascension, Livingston, Tangipahoa, Washington	43 min
Apr 24, 3:00 AM CDT	Special Weather Statement	LIX	Assumption, Saint James, Saint John the Baptist, Saint Tammany	60 min
Apr 24, 3:02 AM CDT	Special Marine Warning	LIX		58 min
Apr 24, 3:30 AM CDT	Severe Thunderstorm Warning	LIX	Ascension, Livingston, Saint James, Saint John the Baptist, Tangipahoa	30 min
Apr 24, 3:55 AM CDT	Special Marine Warning	LIX		65 min
Apr 24, 3:59 AM CDT	Special Weather Statement	LIX	Orleans, Saint Charles	61 min
Apr 24, 4:06 AM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	24 min
Apr 24, 5:36 AM CDT	Special Weather Statement	LIX	Saint Tammany	39 min
Apr 24, 9:44 AM CDT	River Flood Warning	LIX	Tangipahoa	3 days
Apr 24, 9:46 AM CDT	River Flood Warning	LIX	Saint Tammany	48 hr
Apr 24, 11:12 AM CDT	River Flood Warning	LIX	Saint Tammany	21 days
Apr 24, 11:12 AM CDT	River Flood Warning	LIX	Washington	72 hr
Apr 23, 8:17 PM CDT	Special Weather Statement	LIX	Pike, Walthall	28 min
Apr 23, 8:47 PM CDT	Special Weather Statement	LIX	Wilkinson	28 min
Apr 23, 9:20 PM CDT	River Flood Warning	LIX	Pike, Walthall	70 hr
Apr 23, 10:02 PM CDT	Severe Thunderstorm Warning	LIX	Walthall	13 min
Apr 24, 1:16 AM CDT	Special Weather Statement	LIX	Amite, Pike	59 min
Apr 24, 1:26 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Pike, Walthall, Wilkinson	49 min
Apr 24, 1:41 AM CDT	Special Weather Statement	LIX	Pearl River	34 min
Apr 24, 2:35 AM CDT	Special Weather Statement	LIX	Amite, Pike	40 min
Apr 24, 3:42 AM CDT	Severe Thunderstorm Warning	LIX	Pearl River	18 min
Apr 24, 4:30 AM CDT	Special Weather Statement	LIX	Hancock, Harrison	75 min
Apr 24, 4:53 AM CDT	Severe Thunderstorm Warning	LIX	Jackson	52 min
Apr 24, 11:13 AM CDT	River Flood Warning	LIX	Pearl River	46 hr

Nearby

Special Weather Statements in Louisiana, 2021 Every special weather statement 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.