Alert archive / Louisiana / Tornado Warnings in 2016

Tornado Warning 4, NWS New Orleans, LA

January 21, 2016Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jan 21, 2016, 4:38 PM CST for Plaquemines Parish, Louisiana. It was in force for 37 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: Jan 21, 2016, 4:38 PM CST (22:38 UTC)
Expired: Jan 21, 2016, 5:15 PM CST
In force: 37 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Plaquemines Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 21, 2:14 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.6 hours before the alert went out and 121 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: 208 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

481 
WFUS54 KLIX 212238
TORLIX
LAC075-212315-
/O.NEW.KLIX.TO.W.0004.160121T2238Z-160121T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
438 PM CST THU JAN 21 2016

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN PLAQUEMINES PARISH IN SOUTHEASTERN LOUISIANA...

* UNTIL 515 PM CST
    
* AT 437 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR VENICE...OR 29 MILES SOUTHEAST OF PORT
  SULPHUR...MOVING NORTHEAST AT 25 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  VENICE AROUND 450 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 2920 8946 2936 8930 2930 8925 2935 8920
      2929 8915 2930 8919 2923 8924 2929 8914
      2924 8915 2923 8909 2914 8933 2921 8933
      2915 8934 2919 8936 2915 8939 2914 8935
      2911 8937
TIME...MOT...LOC 2237Z 231DEG 21KT 2918 8936 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

CAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 4:56 AM CST	Dense Fog Advisory	LIX	Saint Bernard, Saint John the Baptist	4 hr
Jan 21, 5:10 AM CST	Marine Dense Fog Advisory	LIX		4 hr
Jan 21, 9:47 AM CST	Gale Warning	LIX		47 hr
Jan 21, 11:36 AM CST	Marine Dense Fog Advisory	LIX		3 hr
Jan 21, 3:26 PM CST	Special Marine Warning	LIX		34 min
Jan 21, 3:28 PM CST	Special Marine Warning	LIX		2 hr
Jan 21, 4:06 PM CST	Special Marine Warning	LIX		24 min
Jan 21, 4:09 PM CST	Tornado Warning	LIX	Iberville, Pointe Coupee, West Baton Rouge	51 min
Jan 21, 4:18 PM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	42 min
Jan 21, 4:22 PM CST	Tornado Warning	LIX	Pointe Coupee, West Feliciana	38 min
Jan 21, 4:47 PM CST	Tornado Warning	LIX	East Baton Rouge, East Feliciana	43 min
Jan 21, 4:54 PM CST	Severe Thunderstorm Warning	LIX	East Feliciana, West Feliciana	51 min
Jan 21, 5:17 PM CST	Severe Thunderstorm Warning	LIX	Iberville, Pointe Coupee, West Baton Rouge	28 min
Jan 21, 5:19 PM CST	Special Marine Warning	LIX		56 min
Jan 21, 5:25 PM CST	Tornado Warning	LIX	Livingston, Saint Helena, Tangipahoa	35 min
Jan 21, 5:29 PM CST	Severe Thunderstorm Warning	LIX	East Baton Rouge, Livingston, West Baton Rouge	46 min
Jan 21, 5:33 PM CST	Special Marine Warning	LIX		27 min
Jan 21, 5:43 PM CST	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa	62 min
Jan 21, 5:44 PM CST	Special Marine Warning	LIX		31 min
Jan 21, 5:52 PM CST	Tornado Warning	LIX	Tangipahoa, Washington	23 min
Jan 21, 5:54 PM CST	Severe Thunderstorm Warning	LIX	Livingston, Saint Helena	51 min
Jan 21, 5:56 PM CST	Tornado Warning	LIX	Tangipahoa	34 min

Nearby

Tornado Warnings in Louisiana, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.