Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 4, NWS New Orleans, LA

January 20, 2017Pointe Coupee Parish, West Feliciana Parish, Louisiana

NWS New Orleans, LA issued this tornado warning at Jan 20, 2017, 11:15 PM CST for Pointe Coupee Parish, West Feliciana Parish, Louisiana. It was in force for 30 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 20, 2017, 11:15 PM CST (05:15 UTC)
Expired: Jan 20, 2017, 11:45 PM CST
In force: 30 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

Counties Pointe Coupee Parish, LA, West Feliciana Parish, LA

The radar

The Ft Polk radar (KPOE), 124 km from the middle of the area, began a volume at 05:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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 20, 11:00 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 5.3 hours before the alert went out and 168 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: 627 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 842 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

515 
WFUS54 KLIX 210515
TORLIX
LAC077-125-210545-
/O.NEW.KLIX.TO.W.0004.170121T0515Z-170121T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
1115 PM CST FRI JAN 20 2017

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Northern West Feliciana Parish in southeastern Louisiana...
  Northwestern Pointe Coupee Parish in southeastern Louisiana...

* Until 1145 PM CST
    
* At 1114 PM CST, a severe thunderstorm capable of producing a
  tornado was located over Bayou Current, moving northeast at 45 mph.

  HAZARD...Tornado and half dollar 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...
  Lettsworth and Batchelor around 1125 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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3087 9180 3098 9180 3099 9178 3100 9177
      3104 9172 3104 9165 3097 9166 3100 9164
      3100 9137 3096 9128 3070 9173 3074 9176
      3078 9176 3081 9181 3084 9180 3086 9182
TIME...MOT...LOC 0514Z 227DEG 38KT 3083 9178 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

AK

2 follow-up statements

129 
WWUS54 KLIX 210526
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1126 PM CST FRI JAN 20 2017

LAC077-125-210545-
/O.CON.KLIX.TO.W.0004.000000T0000Z-170121T0545Z/
West Feliciana LA-Pointe Coupee LA-
1126 PM CST FRI JAN 20 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CST FOR NORTHERN
WEST FELICIANA AND NORTHWESTERN POINTE COUPEE PARISHES...
    
At 1126 PM CST, a severe thunderstorm capable of producing a tornado
was located near Lettsworth, or 10 miles northeast of Bayou Current,
moving northeast at 40 mph.

HAZARD...Tornado and golf ball 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 tornadic thunderstorm will remain over mainly rural areas of
northern West Feliciana and northwestern Pointe Coupee 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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3087 9180 3098 9180 3099 9178 3100 9177
      3104 9172 3104 9165 3097 9166 3100 9164
      3100 9137 3096 9128 3070 9173 3074 9176
      3078 9176 3081 9181 3084 9180 3086 9182
TIME...MOT...LOC 0526Z 231DEG 35KT 3090 9167 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

AK

651 
WWUS54 KLIX 210531
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
1131 PM CST FRI JAN 20 2017

LAC077-125-210545-
/O.CON.KLIX.TO.W.0004.000000T0000Z-170121T0545Z/
West Feliciana LA-Pointe Coupee LA-
1131 PM CST FRI JAN 20 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CST FOR NORTHERN
WEST FELICIANA AND NORTHWESTERN POINTE COUPEE PARISHES...
    
At 1130 PM CST, a severe thunderstorm capable of producing a tornado
was located near Lettsworth, or 11 miles east of Simmesport, moving
northeast at 45 mph.

HAZARD...Tornado and baseball 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. 

Locations impacted include...
Batchelor and Lettsworth. 

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3087 9180 3098 9180 3099 9178 3100 9177
      3104 9172 3104 9165 3097 9166 3100 9164
      3100 9137 3096 9128 3070 9173 3074 9176
      3078 9176 3081 9181 3084 9180 3086 9182
TIME...MOT...LOC 0530Z 227DEG 38KT 3093 9163 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

AK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 20, 10:53 PM CST	Marine Dense Fog Advisory	LIX		4 hr
Jan 20, 11:01 PM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	29 min
Jan 20, 11:43 PM CST	Tornado Warning	LIX	West Feliciana	32 min
Jan 21, 1:06 AM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	24 min
Jan 21, 1:41 AM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	34 min
Jan 21, 1:51 AM CST	Special Weather Statement	LIX	Tangipahoa	39 min
Jan 21, 2:14 AM CST	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Feliciana	46 min
Jan 21, 2:20 AM CST	Tornado Warning	LIX	Livingston, Saint Helena, Tangipahoa	25 min
Jan 21, 2:28 AM CST	Severe Thunderstorm Warning	LIX	Tangipahoa, Washington	32 min
Jan 21, 2:48 AM CST	Tornado Warning	LIX	East Baton Rouge, East Feliciana, Saint Helena	10 min
Jan 21, 2:57 AM CST	Severe Thunderstorm Warning	LIX	Washington	33 min
Jan 21, 2:57 AM CST	Severe Thunderstorm Warning	LIX	Saint Helena, Tangipahoa, Washington	48 min
Jan 21, 3:02 AM CST	Tornado Warning	LIX	Washington	13 min
Jan 21, 3:04 AM CST	Tornado Warning	LIX	Washington	15 min
Jan 21, 3:28 AM CST	Areal Flood Advisory	LIX	East Baton Rouge, Iberville, Pointe Coupee, West Baton Rouge	2 hr
Jan 21, 3:37 AM CST	Special Weather Statement	LIX	Saint Helena	38 min
Jan 21, 3:40 AM CST	Small Craft Advisory	LIX		35 hr
Jan 21, 4:45 AM CST	Special Weather Statement	LIX	Ascension, Livingston, Tangipahoa	60 min
Jan 21, 5:00 AM CST	Special Weather Statement	LIX	Washington	30 min
Jan 21, 5:22 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Washington	38 min
Jan 21, 5:24 AM CST	Special Marine Warning	LIX		96 min
Jan 21, 6:08 AM CST	Severe Thunderstorm Warning	LIX	Jefferson, Orleans	37 min
Jan 21, 6:38 AM CST	Special Marine Warning	LIX		37 min
Jan 21, 10:58 AM CST	River Flood Warning	LIX	Saint Helena	33 hr
Jan 21, 11:03 AM CST	River Flood Warning	LIX	Saint Tammany	13 days
Jan 21, 3:44 PM CST	Gale Warning	LIX		41 hr
Jan 21, 4:33 PM CST	Special Weather Statement	LIX	Orleans	42 min
Jan 21, 4:51 PM CST	Special Marine Warning	LIX		24 min
Jan 21, 4:54 PM CST	Special Weather Statement	LIX	Saint John the Baptist	36 min
Jan 21, 4:56 PM CST	Severe Thunderstorm Warning	LIX	Saint Charles	19 min
Jan 21, 5:02 PM CST	Tornado Warning	LIX	Orleans	13 min
Jan 21, 5:11 PM CST	Tornado Warning	LIX	Saint Charles	7 min
Jan 21, 5:16 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	29 min
Jan 21, 5:20 PM CST	Special Marine Warning	LIX		40 min
Jan 21, 5:42 PM CST	Special Marine Warning	LIX		33 min
Jan 21, 5:47 PM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	28 min
Jan 21, 5:52 PM CST	Special Marine Warning	LIX		38 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; radar from the NEXRAD Level II archive.