Alert archive / Louisiana / Tornado Warnings in 2022

Tornado Warning 66, NWS New Orleans, LA

December 14, 2022Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Dec 14, 2022, 5:17 PM CST for Plaquemines Parish, Louisiana. It was in force for 18 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: Dec 14, 2022, 5:17 PM CST (23:17 UTC)
Expired: Dec 14, 2022, 5:35 PM CST
In force: 18 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Plaquemines Parish, LA

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Dec 14, 12:22 PM CST	Tornado Watch PDS	SPC	10 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.3 hours before the alert went out and 78 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: 963 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

As transmitted.

228 
WFUS54 KLIX 142317
TORLIX
LAC075-142345-
/O.NEW.KLIX.TO.W.0066.221214T2317Z-221214T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
517 PM CST Wed Dec 14 2022

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Central Plaquemines Parish in southeastern Louisiana...

* Until 545 PM CST.
    
* At 516 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Pointe A La Hache, or near Port Sulphur, moving
  northeast at 40 mph.

  HAZARD...Tornado.

  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 tornadic thunderstorm will remain over mainly rural areas of
  central Plaquemines Parish.

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.

This possible tornado will track near the previous radar-confirmed 
tornado.

&&

LAT...LON 2951 8983 2964 8973 2960 8962 2959 8968
      2954 8963 2953 8963 2949 8979
TIME...MOT...LOC 2316Z 226DEG 36KT 2953 8979 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

JRK

1 follow-up statement

288 
WWUS54 KLIX 142335
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
535 PM CST Wed Dec 14 2022

LAC075-142339-
/O.CAN.KLIX.TO.W.0066.000000T0000Z-221214T2345Z/
Plaquemines LA-
535 PM CST Wed Dec 14 2022

...THE TORNADO WARNING FOR CENTRAL PLAQUEMINES PARISH IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However heavy rain and 
gusty winds is still possible with the line of thunderstorms moving 
through.

A Tornado Watch remains in effect until 800 PM CST for southeastern
Louisiana.

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

LAT...LON 2951 8983 2964 8973 2960 8962 2959 8968
      2954 8963 2953 8963 2949 8979
TIME...MOT...LOC 2327Z 226DEG 36KT 2962 8968 

$$

JRK

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New Orleans, LA wrote its last area forecast discussion before this tornado warning went out at Dec 14, 4:30 PM CST, 47 minutes earlier.

Area forecast discussion, Dec 14, 4:30 PM CST, 47 minutes before

Area Forecast Discussion
National Weather Service New Orleans LA
430 PM CST Wed Dec 14 2022

...New SHORT TERM, LONG TERM, AVIATION, MARINE...

.SHORT TERM...
(This evening through Thursday night)
Issued at 407 PM CST Wed Dec 14 2022

Focus is on the current severe weather over the region.

Once this convection moves out this evening things will quickly
quiet down as a cold front moves through. L/W trough takes over
much of the CONUS with much cooler air funneling in. This will
keep the conditions quiet, dry, and cool into the weekend.
However, at this time not too dry as we are not anticipating any
freezing temperatures. The amount of rainfall also that has
occurred will help keep the dewpoints from dropping too much as
well keeping the area from dropping below freezing. /CAB/

&&

.LONG TERM...
(Friday through Tuesday night)
Issued at 407 PM CST Wed Dec 14 2022

L/W trough will start to swing through Saturday night and Sunday.
S/W ridging will follow behind it along with moisture slowly
returning. Next s/w to move through will be early next week and
should bring a return of rain. /CAB/

&&

.AVIATION...
(00Z TAFS)
Issued at 407 PM CST Wed Dec 14 2022

All terminals are still dealing with impact but behind the cold
front the main issue will be low cigs. Ahead of the cold front,
mainly GPT now strong to severe storms are expected. Winds will
continue to be gusty with or without storms. Northwest winds will
be strongest over the southshore coming off the lake overnight
tonight. /CAB/

&&

.MARINE...
Issued at 407 PM CST Wed Dec 14 2022

Convection with strong winds and waterspouts will continue to be a
problem through the evening but then a cold front should move
through. Strong northwest winds will usher in behind the front
with SCY conditions persisting through the night. High pressure
will build in behind the front. /CAB/

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  42  60  35  58 /  20   0   0   0
BTR  44  63  38  63 /  10   0   0   0
ASD  46  65  37  65 /  60   0   0   0
MSY  51  63  47  63 /  50   0   0   0
GPT  48  65  39  64 /  90   0   0   0
PQL  47  63  37  63 / 100   0   0   0

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...Flood Watch until 9 PM CST this evening for LAZ037-039-046>048-
     056>060-064-065-071-076>090.

GM...Small Craft Advisory until 6 AM CST Thursday for GMZ530-532-534-
     536-538-550-552-555-557-570-572-575-577.

MS...Flood Watch until 9 PM CST this evening for MSZ070-071-077-080.

GM...Small Craft Advisory until 6 AM CST Thursday for GMZ532-534-536-
     538-550-552-555-557-570-572-575-577.

&&

In the hours before

Local storm report, Dec 14, 4:15 PM CST, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
415 PM CST WED DEC 14 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0305 PM     TORNADO          6 SSE BUSH              30.52N 89.88W
12/14/2022                   ST. TAMMANY        LA   FIRE DEPT/RESCUE

            TREES AND POWERLINES DOWN IN THE TALISHEEK
            AREA.

&&

HRL

Local storm report, Dec 14, 4:17 PM CST, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
417 PM CST WED DEC 14 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0404 PM     TORNADO          2 W CHALMETTE           29.95N 90.01W
12/14/2022                   ST. BERNARD        LA   EMERGENCY MNGR

            DAMAGE TO BUILDINGS.

&&

LNN

Local storm report, Dec 14, 4:20 PM CST, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
420 PM CST WED DEC 14 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     TORNADO          2 NW HARVEY             29.90N 90.09W
12/14/2022                   JEFFERSON          LA   PUBLIC

            DAMAGE REPORTED TO STRUCTURES.

&&

HRL

Local storm report, Dec 14, 4:21 PM CST, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
421 PM CST WED DEC 14 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0356 PM     TORNADO          1 NW HARVEY             29.90N 90.08W
12/14/2022                   JEFFERSON          LA   EMERGENCY MNGR

            REPORTED POWERLINES DOWN.

&&

HRL

Local storm report, Dec 14, 4:28 PM CST, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
428 PM CST WED DEC 14 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0305 PM     TORNADO          6 E ABITA SPRINGS       30.48N 89.93W
12/14/2022                   ST. TAMMANY        LA   FIRE DEPT/RESCUE

            REPORTS OF POWER POLES SNAPPED AND TREES
            DOWN.

&&

HRL

Local storm report, Dec 14, 4:56 PM CST, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
456 PM CST WED DEC 14 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0305 PM     TSTM WND DMG     HOUMA                   29.58N 90.70W
12/14/2022                   TERREBONNE         LA   EMERGENCY MNGR

            REPORTS OF ROOF DAMAGE AND POWERLINES DOWN.

&&

HRL

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 14, 4:43 AM CST	Areal Flood Advisory	LIX	Pointe Coupee, West Feliciana	46 min
Dec 14, 5:29 AM CST	Flash Flood Warning	LIX	Pointe Coupee, West Feliciana	7 hr
Dec 14, 11:10 AM CST	Special Marine Warning	LIX		35 min
Dec 14, 11:37 AM CST	Tornado Warning	LIX	Livingston, Saint Helena, Tangipahoa	38 min
Dec 14, 11:39 AM CST	Tornado Warning	LIX	Washington	19 min
Dec 14, 11:44 AM CST	Tornado Warning	LIX	Saint Tammany, Tangipahoa	25 min
Dec 14, 11:54 AM CST	Tornado Warning	LIX	Saint Tammany, Washington	36 min
Dec 14, 11:57 AM CST	Tornado Warning	LIX	Saint Tammany, Tangipahoa, Washington	48 min
Dec 14, 11:58 AM CST	Tornado Warning	LIX	Saint Helena, Tangipahoa	34 min
Dec 14, 12:00 PM CST	Tornado Warning	LIX	Ascension, Assumption, Iberville, Saint James	32 min
Dec 14, 12:00 PM CST	Tornado Warning	LIX	Washington	30 min
Dec 14, 12:02 PM CST	Special Marine Warning	LIX		43 min
Dec 14, 12:04 PM CST	Special Marine Warning	LIX		41 min
Dec 14, 12:10 PM CST	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena, West Baton Rouge	3 hr
Dec 14, 12:16 PM CST	Tornado Warning	LIX	Tangipahoa, Washington	44 min
Dec 14, 12:17 PM CST	Tornado Warning	LIX	Livingston, Saint Helena, Tangipahoa	43 min
Dec 14, 12:21 PM CST	Tornado Warning	LIX	Ascension, Livingston	39 min
Dec 14, 12:25 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	35 min
Dec 14, 12:26 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	34 min
Dec 14, 12:41 PM CST	Tornado Warning	LIX	Livingston, Tangipahoa	28 min
Dec 14, 12:44 PM CST	Tornado Warning	LIX	Saint Helena	15 min
Dec 14, 12:49 PM CST	Tornado Warning	LIX	Tangipahoa, Washington	41 min
Dec 14, 1:12 PM CST	Flash Flood Warning	LIX	Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James	3 hr
Dec 14, 1:41 PM CST	Flash Flood Warning	LIX	Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington	3 hr
Dec 14, 1:57 PM CST	Special Marine Warning	LIX		63 min
Dec 14, 2:05 PM CST	Special Weather Statement	LIX	Saint Tammany, Washington	25 min
Dec 14, 2:11 PM CST	Special Marine Warning	LIX		64 min
Dec 14, 2:18 PM CST	Special Weather Statement	LIX	Saint John the Baptist	27 min
Dec 14, 2:21 PM CST	Tornado Warning	LIX	Saint Charles, Saint John the Baptist	17 min
Dec 14, 2:31 PM CST	Tornado Warning	LIX	Lafourche, Saint Charles	29 min
Dec 14, 2:36 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	39 min
Dec 14, 2:42 PM CST	Tornado Warning	LIX	Saint Tammany	33 min
Dec 14, 2:52 PM CST	Flash Flood Warning	LIX	Saint Tammany, Tangipahoa, Washington	3 hr
Dec 14, 3:07 PM CST	Tornado Warning Tornado observed	LIX	Saint Tammany	11 min
Dec 14, 3:08 PM CST	Special Marine Warning	LIX		47 min
Dec 14, 3:11 PM CST	Flash Flood Warning	LIX	Saint Charles, Saint John the Baptist	2 hr
Dec 14, 3:14 PM CST	Tornado Warning	LIX	Jefferson, Lafourche, Saint Charles	31 min
Dec 14, 3:15 PM CST	Special Marine Warning	LIX		60 min
Dec 14, 3:38 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	52 min
Dec 14, 3:44 PM CST	Areal Flood Advisory	LIX	Orleans, Saint Tammany	2 hr
Dec 14, 3:44 PM CST	Tornado Warning	LIX	Jefferson, Orleans, Saint Bernard, Saint Charles	46 min
Dec 14, 3:56 PM CST	Special Marine Warning	LIX		64 min
Dec 14, 4:23 PM CST	Flash Flood Warning	LIX	Jefferson, Orleans, Saint Bernard, Saint Charles	2 hr
Dec 14, 4:29 PM CST	Special Marine Warning	LIX		91 min
Dec 14, 4:32 PM CST	Special Marine Warning	LIX		58 min
Dec 14, 4:47 PM CST	Tornado Warning	LIX	Plaquemines, Saint Bernard	28 min
Dec 14, 4:51 PM CST	Special Marine Warning	LIX		84 min
Dec 14, 5:21 PM CST	Areal Flood Advisory	LIX	Saint Tammany	112 min
Dec 14, 5:21 PM CST	Special Marine Warning	LIX		54 min
Dec 14, 5:54 PM CST	Special Marine Warning	LIX		2 hr
Dec 14, 5:58 PM CST	Special Marine Warning	LIX		2 hr

Nearby

Tornado Warnings in Louisiana, 2022 Every tornado warning in 2022 Tornadoes in 2022

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.