Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 22, NWS Jackson, MS

January 21, 2017Morehouse Parish, West Carroll Parish, Louisiana

NWS Jackson, MS issued this tornado warning at Jan 21, 2017, 8:46 PM CST for Morehouse Parish, West Carroll Parish, Louisiana. It was in force for 59 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jan 21, 2017, 8:46 PM CST (02:46 UTC)
Expired: Jan 21, 2017, 9:45 PM CST
In force: 59 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

Counties Morehouse Parish, LA, West Carroll Parish, LA

The radar

The Shreveport radar (KSHV), 180 km from the middle of the area, began a volume at 02:47 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.

What was reported inside it

Time	Report	Where	Remark
Jan 21, 8:49 PM CST	TSTM WND DMG	Mer Rouge, LA	POWER LINES DOWN IN MER ROUGE.
Jan 21, 9:04 PM CST	TORNADO 1	3 Sw Galion, LA	THIS TORNADO BEGAN JUST WEST OF US 165 NORTH OF MER ROUGE AND TRACKED 9.25 MILES NORTHEASTWARD TO JUST SOUTHEAST OF BONITA, ENDING JUST EAST OF HORACE HILL RD. THREE HOMES, AT LEAST TWO OUTBUILDINGS, AND A CHURCH SUSTAINED MINOR DAMAGE, MUTLIPLE POWER POLES WE
Jan 21, 9:55 PM CST	TSTM WND DMG	2 Sw Galion, LA	5 UTILITY POLES BLOWN OVER ALONG HWY 165 BETWEEN MER ROUGE AND BONITA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 21, 7:50 PM CST	Tornado Watch	SPC	4 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 2.8 hours before the alert went out and 171 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: 1144 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

As transmitted.

737 
WFUS54 KJAN 220246
TORJAN
LAC067-123-220345-
/O.NEW.KJAN.TO.W.0022.170122T0246Z-170122T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
846 PM CST SAT JAN 21 2017

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Northwestern West Carroll Parish in northeastern Louisiana...
  Morehouse Parish in northeastern Louisiana...

* Until 945 PM CST
    
* At 845 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Bastrop, moving northeast at 30 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...
  Galion around 910 PM CST. 
  Jones around 925 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Bonita, Collinston and Mer Rouge.

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 3299 9207 3301 9179 3301 9145 3290 9144
      3263 9192 3266 9191 3266 9194 3271 9197
      3270 9202 3271 9204 3269 9204 3270 9206
      3273 9207 3274 9205 3276 9206 3279 9205
      3284 9206 3287 9208 3293 9207 3297 9208
TIME...MOT...LOC 0245Z 234DEG 25KT 3274 9188 

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

$$

CME

1 follow-up statement

519 
WWUS54 KJAN 220314
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
914 PM CST SAT JAN 21 2017

LAC067-123-220345-
/O.CON.KJAN.TO.W.0022.000000T0000Z-170122T0345Z/
West Carroll LA-Morehouse LA-
914 PM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CST FOR
NORTHWESTERN WEST CARROLL AND MOREHOUSE PARISHES...
    
At 914 PM CST, a severe thunderstorm capable of producing a tornado
was located near Bastrop, moving east at 30 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 dangerous storm will be near...
  Beekman around 925 PM CST. 
  Galion around 940 PM CST. 
  Jones around 945 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Bonita, Collinston and Mer Rouge.

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 3298 9194 3301 9179 3301 9145 3290 9144
      3263 9192 3266 9191 3266 9194 3271 9197
      3270 9202 3271 9204 3269 9204 3270 9206
      3273 9207 3274 9205 3276 9206 3279 9205
      3284 9206 3287 9208 3293 9207
TIME...MOT...LOC 0314Z 258DEG 25KT 3285 9196 

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

$$

CME

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 21, 7:08 PM CST	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	82 min
Jan 21, 7:24 PM CST	Tornado Warning	JAN	Catahoula, Concordia	66 min
Jan 21, 8:18 PM CST	Severe Thunderstorm Warning	JAN	Concordia, Tensas	57 min
Jan 21, 8:31 PM CST	Tornado Warning	JAN	Concordia	41 min
Jan 21, 8:43 PM CST	Tornado Warning	JAN	Catahoula, Concordia	17 min
Jan 21, 9:38 PM CST	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	67 min
Jan 21, 9:43 PM CST	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, West Carroll	47 min
Jan 22, 5:18 AM CST	Wind Advisory	JAN	East Carroll, Morehouse, West Carroll	22 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.