Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 96, NWS New Orleans, LA

June 22, 2017Saint Helena Parish, Tangipahoa Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jun 22, 2017, 11:57 AM CDT for Saint Helena Parish, Tangipahoa Parish, Louisiana. It was in force for 33 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 22, 2017, 11:57 AM CDT (16:57 UTC)
Expired: Jun 22, 2017, 12:30 PM CDT
In force: 33 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Saint Helena Parish, LA, Tangipahoa 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 22, 2:57 AM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.0 hours before the alert went out and 104 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: 951 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 272 m²/s²
0-3 km storm-relative helicity: 287 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 10.6

Open this sounding in Storm Lab

The text

As transmitted.

501 
WFUS54 KLIX 221657
TORLIX
LAC091-105-221730-
/O.NEW.KLIX.TO.W.0096.170622T1657Z-170622T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1157 AM CDT THU JUN 22 2017

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Southeastern St. Helena Parish in southeastern Louisiana...
  Northwestern Tangipahoa Parish in southeastern Louisiana...

* Until 1230 PM CDT
    
* At 1157 AM CDT, a severe thunderstorm capable of producing a
  tornado was located near Amite City, or near Amite, moving
  northeast at 30 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 dangerous storm will be near...
  Kentwood around 1230 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Tangipahoa.

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 3070 9061 3072 9066 3095 9059 3088 9044
TIME...MOT...LOC 1657Z 206DEG 24KT 3075 9061 

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

$$

MJH

1 follow-up statement

043 
WWUS54 KLIX 221706
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1206 PM CDT THU JUN 22 2017

LAC091-105-221730-
/O.CON.KLIX.TO.W.0096.000000T0000Z-170622T1730Z/
St. Helena LA-Tangipahoa LA-
1206 PM CDT THU JUN 22 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR EAST
CENTRAL ST. HELENA AND NORTHWESTERN TANGIPAHOA PARISHES...
    
At 1206 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Roseland, or near Greensburg, moving northeast at 30
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 dangerous storm will be near...
  Kentwood around 1230 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Tangipahoa.

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 3077 9059 3080 9064 3095 9059 3088 9044
TIME...MOT...LOC 1706Z 206DEG 24KT 3081 9058 

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

$$

MJH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 10:19 PM CDT	River Flood Warning	LIX	Livingston	55 hr
Jun 22, 12:23 AM CDT	Special Weather Statement	LIX	Saint Helena	37 min
Jun 22, 3:37 AM CDT	Special Marine Warning	LIX		113 min
Jun 22, 5:12 AM CDT	Special Marine Warning	LIX		2 hr
Jun 22, 10:42 AM CDT	Special Marine Warning	LIX		63 min
Jun 22, 11:39 AM CDT	Tornado Warning	LIX	Livingston, Saint Helena, Tangipahoa	21 min

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.