Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 92, NWS New Orleans, LA

June 21, 2017Livingston Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jun 21, 2017, 1:26 PM CDT for Livingston Parish, Louisiana. It was in force for 19 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: Jun 21, 2017, 1:26 PM CDT (18:26 UTC)
Expired: Jun 21, 2017, 1:45 PM CDT
In force: 19 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Livingston 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
Jun 21, 10:01 AM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.4 hours before the alert went out and 83 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: 262 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 465 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 485 m²/s²
0-3 km storm-relative helicity: 506 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

As transmitted.

235 
WFUS54 KLIX 211826
TORLIX
LAC063-211845-
/O.NEW.KLIX.TO.W.0092.170621T1826Z-170621T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
126 PM CDT WED JUN 21 2017

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  East central Livingston Parish in southeastern Louisiana...

* Until 145 PM CDT
    
* At 126 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Springfield, or 11 miles southwest of Hammond,
  moving northwest at 25 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
  east central Livingston Parish, including the following locations:
  Killian.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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.

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 3035 9050 3033 9053 3040 9066 3045 9058
TIME...MOT...LOC 1826Z 132DEG 21KT 3036 9054 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

MJH

2 follow-up statements

731 
WWUS54 KLIX 211839
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
139 PM CDT WED JUN 21 2017

LAC063-211845-
/O.CON.KLIX.TO.W.0092.000000T0000Z-170621T1845Z/
Livingston LA-
139 PM CDT WED JUN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR EAST
CENTRAL LIVINGSTON PARISH...
    
At 139 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Springfield, or 10 miles southwest of Hammond,
moving northwest at 25 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
east central Livingston 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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 3039 9055 3036 9058 3040 9066 3045 9058
TIME...MOT...LOC 1839Z 132DEG 21KT 3041 9061 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

MJH

097 
WWUS54 KLIX 211845
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
145 PM CDT WED JUN 21 2017

LAC063-211854-
/O.EXP.KLIX.TO.W.0092.000000T0000Z-170621T1845Z/
Livingston LA-
145 PM CDT WED JUN 21 2017

...THE TORNADO WARNING FOR EAST CENTRAL LIVINGSTON PARISH WILL EXPIRE
AT 145 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.  However gusty winds
and heavy rain are still possible with this thunderstorm.

A tornado watch remains in effect until 700 PM CDT for southeastern
Louisiana.

LAT...LON 3039 9055 3036 9058 3040 9066 3045 9058
TIME...MOT...LOC 1844Z 132DEG 21KT 3042 9063 

$$

MJH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 12:56 AM CDT	Special Marine Warning	LIX		34 min
Jun 21, 7:31 AM CDT	Tornado Warning	LIX	Saint Tammany	29 min
Jun 21, 8:05 AM CDT	Special Marine Warning	LIX		25 min
Jun 21, 11:23 AM CDT	Special Marine Warning	LIX		22 min
Jun 21, 11:25 AM CDT	Small Craft Advisory	LIX		52 hr
Jun 21, 11:33 AM CDT	Tornado Warning	LIX	Orleans	13 min
Jun 21, 11:40 AM CDT	Special Marine Warning	LIX		50 min
Jun 21, 11:56 AM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	2 hr
Jun 21, 12:53 PM CDT	Special Marine Warning	LIX		37 min
Jun 21, 12:53 PM CDT	Tornado Warning	LIX	Livingston, Saint John the Baptist, Tangipahoa	37 min
Jun 21, 1:33 PM CDT	Special Weather Statement	LIX	Saint John the Baptist	57 min
Jun 21, 2:11 PM CDT	Special Marine Warning	LIX		19 min
Jun 21, 2:38 PM CDT	Special Marine Warning	LIX		37 min
Jun 21, 3:06 PM CDT	Special Marine Warning	LIX		24 min
Jun 21, 3:21 PM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Tammany	54 min
Jun 21, 4:00 PM CDT	Coastal Flood Advisory	LIX	Saint Bernard, Saint John the Baptist	48 hr
Jun 21, 4:44 PM CDT	Small Craft Advisory	LIX		47 hr

Nearby

Tornado Warnings in Louisiana, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.