Alert archive / Louisiana / Tornado Warnings in 2020

Tornado Warning 2, NWS Jackson, MS

January 11, 2020Morehouse Parish, West Carroll Parish, Louisiana

NWS Jackson, MS issued this tornado warning at Jan 11, 2020, 2:56 AM CST for Morehouse Parish, West Carroll Parish, Louisiana. It was in force for 47 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 11, 2020, 2:56 AM CST (08:56 UTC)
Expired: Jan 11, 2020, 3:43 AM CST
In force: 47 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Morehouse Parish, LA, West Carroll Parish, LA

The radar

The Shreveport radar (KSHV), 179 km from the middle of the area, began a volume at 08:56 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 11, 2:37 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 8.9 hours before the alert went out and 170 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: 703 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 379 m²/s²
0-3 km storm-relative helicity: 620 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

As transmitted.

251 
WFUS54 KJAN 110856
TORJAN
LAC067-123-111000-
/O.NEW.KJAN.TO.W.0002.200111T0856Z-200111T1000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
256 AM CST Sat Jan 11 2020

The National Weather Service in Jackson has issued a

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

* Until 400 AM CST.
    
* At 256 AM CST, a severe thunderstorm capable of producing a tornado
  was located 11 miles southeast of Huttig, moving east at 45 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...
  Beekman around 315 AM CST.
  Galion around 325 AM CST.
  Jones around 335 AM CST.
  Goodwill around 340 AM CST.

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

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 9208 3301 9207 3301 9144 3272 9144
      3271 9206 3272 9206 3273 9207 3274 9205
      3276 9206 3280 9205 3282 9207 3284 9206
      3287 9208 3293 9207 3296 9208
TIME...MOT...LOC 0856Z 268DEG 37KT 3288 9210 

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

$$

22

2 follow-up statements

134 
WWUS54 KJAN 110915
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
315 AM CST Sat Jan 11 2020

LAC067-123-111000-
/O.CON.KJAN.TO.W.0002.000000T0000Z-200111T1000Z/
Morehouse LA-West Carroll LA-
315 AM CST Sat Jan 11 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 AM CST FOR MOREHOUSE
AND NORTHWESTERN WEST CARROLL PARISHES...
    
At 315 AM CST, a severe thunderstorm capable of producing a tornado
was located over Beekman, or 7 miles north of Bastrop, moving east at
35 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...
  Galion around 330 AM CST.
  Jones around 345 AM CST.

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

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 3297 9205 3301 9204 3301 9144 3278 9144
      3273 9202 3278 9204 3287 9206 3295 9204
TIME...MOT...LOC 0915Z 267DEG 29KT 3289 9191 

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

$$

22

734 
WWUS54 KJAN 110943
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
343 AM CST Sat Jan 11 2020

LAC067-123-110951-
/O.CAN.KJAN.TO.W.0002.000000T0000Z-200111T1000Z/
Morehouse LA-West Carroll LA-
343 AM CST Sat Jan 11 2020

...THE TORNADO WARNING FOR MOREHOUSE AND NORTHWESTERN WEST CARROLL
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.

A Tornado Watch remains in effect until 700 AM CST for southeastern
Arkansas. A Tornado Watch also remains in effect until 900 AM CST for
northeastern Louisiana.

Remember, a Severe Thunderstorm Warning still remains in effect for 
Morehouse and West Carroll Parish in northeastern Louisiana until 
430 AM CST.

LAT...LON 3297 9205 3301 9204 3301 9144 3278 9144
      3273 9202 3278 9204 3287 9206 3295 9204
TIME...MOT...LOC 0934Z 268DEG 37KT 3290 9158 

$$

22

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 11, 2:34 AM CST	Severe Thunderstorm Warning	JAN	Morehouse	56 min
Jan 11, 3:33 AM CST	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, Richland, West Carroll	57 min
Jan 11, 4:13 AM CST	Severe Thunderstorm Warning	JAN	Franklin, Madison, Richland	62 min
Jan 11, 4:30 AM CST	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, Richland, West Carroll	60 min
Jan 11, 4:44 AM CST	Severe Thunderstorm Warning	JAN	Catahoula, Concordia, Franklin, Tensas	61 min
Jan 11, 5:10 AM CST	Severe Thunderstorm Warning	JAN	Franklin, Madison, Richland, Tensas	65 min
Jan 11, 5:28 AM CST	Severe Thunderstorm Warning	JAN	East Carroll	62 min
Jan 11, 5:43 AM CST	Severe Thunderstorm Warning	JAN	Catahoula, Concordia, Franklin, Tensas	62 min
Jan 11, 6:13 AM CST	Severe Thunderstorm Warning	JAN	Madison, Tensas	62 min

Nearby

Tornado Warnings in Louisiana, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.