Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 2, NWS New Orleans, LA

January 2, 2017Saint Tammany Parish, Tangipahoa Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jan 2, 2017, 10:58 AM CST for Saint Tammany Parish, Tangipahoa Parish, Louisiana. It was in force for 16 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 2, 2017, 10:58 AM CST (16:58 UTC)
Expired: Jan 2, 2017, 11:14 AM CST
In force: 16 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Saint Tammany Parish, LA, Tangipahoa Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.0 hours before the alert went out and 57 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: 1261 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 322 m²/s²
0-3 km storm-relative helicity: 423 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted.

274 
WFUS54 KLIX 021658
TORLIX
LAC103-105-021730-
/O.NEW.KLIX.TO.W.0002.170102T1658Z-170102T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1058 AM CST MON JAN 2 2017

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  West central St. Tammany Parish in southeastern Louisiana...
  Southeastern Tangipahoa Parish in southeastern Louisiana...

* Until 1130 AM CST
    
* At 1057 AM CST, a severe thunderstorm capable of producing a
  tornado was located 8 miles southwest of Madisonville, or 14 miles
  southwest of Covington, moving northeast 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
  west central St. Tammany and southeastern Tangipahoa Parishes.

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 3048 9031 3048 9017 3036 9019 3031 9030
      3033 9033
TIME...MOT...LOC 1657Z 215DEG 23KT 3035 9030 

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

$$

24/RR

2 follow-up statements

740 
WWUS54 KLIX 021704
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1104 AM CST MON JAN 2 2017

LAC103-105-021730-
/O.CON.KLIX.TO.W.0002.000000T0000Z-170102T1730Z/
St. Tammany LA-Tangipahoa LA-
1104 AM CST MON JAN 2 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 AM CST FOR WEST
CENTRAL ST. TAMMANY AND SOUTHEASTERN TANGIPAHOA PARISHES...
        
At 1104 AM CST, a confirmed tornado was located 7 miles west of
Madisonville, or 11 miles southwest of Covington, moving north at 25
mph.

HAZARD...Damaging tornado. 

SOURCE...Radar confirmed tornado. 

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
west central St. Tammany and southeastern Tangipahoa Parishes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3048 9031 3048 9017 3037 9023 3035 9029
      3036 9031
TIME...MOT...LOC 1704Z 202DEG 24KT 3039 9028 

TORNADO...OBSERVED
HAIL...<.75IN

$$

24/RR

248 
WWUS54 KLIX 021714
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1114 AM CST MON JAN 2 2017

LAC103-105-021723-
/O.CAN.KLIX.TO.W.0002.000000T0000Z-170102T1730Z/
St. Tammany LA-Tangipahoa LA-
1114 AM CST MON JAN 2 2017

...THE TORNADO WARNING FOR WEST CENTRAL ST. TAMMANY AND SOUTHEASTERN
TANGIPAHOA PARISHES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

LAT...LON 3048 9031 3048 9017 3037 9023 3035 9029
      3036 9031
TIME...MOT...LOC 1713Z 215DEG 23KT 3044 9024 

$$

24/RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 2, 3:30 AM CST	Small Craft Advisory	LIX		15 hr
Jan 2, 9:11 AM CST	Special Marine Warning	LIX		64 min
Jan 2, 9:24 AM CST	Special Marine Warning	LIX		36 min
Jan 2, 10:03 AM CST	Areal Flood Advisory	LIX	Saint Tammany	117 min
Jan 2, 10:15 AM CST	Special Marine Warning	LIX		30 min
Jan 2, 10:16 AM CST	Special Marine Warning	LIX		29 min
Jan 2, 10:21 AM CST	Special Weather Statement	LIX	Plaquemines	54 min
Jan 2, 10:27 AM CST	Special Weather Statement	LIX	Saint John the Baptist	48 min
Jan 2, 10:30 AM CST	Tornado Warning	LIX	Saint John the Baptist, Tangipahoa	30 min
Jan 2, 11:22 AM CST	Special Marine Warning	LIX		83 min
Jan 2, 11:35 AM CST	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	115 min
Jan 2, 12:14 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Washington	46 min
Jan 2, 12:15 PM CST	Severe Thunderstorm Warning	LIX	East Feliciana	45 min
Jan 2, 12:41 PM CST	Severe Thunderstorm Warning	LIX	West Feliciana	34 min
Jan 2, 12:51 PM CST	Special Marine Warning	LIX		54 min
Jan 2, 12:55 PM CST	Special Weather Statement	LIX	East Baton Rouge, East Feliciana, Iberville, Saint Helena, West Baton Rouge	95 min
Jan 2, 1:20 PM CST	Severe Thunderstorm Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena and 3 more	55 min
Jan 2, 1:52 PM CST	Severe Thunderstorm Warning	LIX	Ascension, Livingston, Saint Helena, Saint John the Baptist, Saint Tammany, Tangipahoa and 1 more	53 min
Jan 2, 1:55 PM CST	Special Marine Warning	LIX		35 min
Jan 2, 2:35 PM CST	Severe Thunderstorm Warning	LIX	Orleans, Saint John the Baptist, Saint Tammany, Tangipahoa, Washington	55 min
Jan 2, 2:38 PM CST	Special Weather Statement	LIX	Ascension, Assumption, Saint James, Saint John the Baptist, Terrebonne	67 min
Jan 2, 3:31 PM CST	Special Marine Warning	LIX		89 min
Jan 2, 3:37 PM CST	Special Weather Statement	LIX	Jefferson, Lafourche, Orleans, Saint Charles, Terrebonne	113 min
Jan 2, 4:14 PM CST	River Flood Warning	LIX	Saint Tammany	34 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.