Alert archive / Louisiana / Tornado Warnings in 2018

Tornado Warning 79, NWS Shreveport, LA

April 14, 2018Jackson Parish, Lincoln Parish, Ouachita Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 14, 2018, 2:31 AM CDT for Jackson Parish, Lincoln Parish, Ouachita Parish, Louisiana. It was in force for 29 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: Apr 14, 2018, 2:31 AM CDT (07:31 UTC)
Expired: Apr 14, 2018, 3:00 AM CDT
In force: 29 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Jackson Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA

The radar

The Ft Polk radar (KPOE), 164 km from the middle of the area, began a volume at 07:32 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
Apr 13, 9:53 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 7.5 hours before the alert went out and 156 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: 1539 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 235 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 13.1

Open this sounding in Storm Lab

The text

As transmitted.

871 
WFUS54 KSHV 140731
TORSHV
LAC049-061-073-140800-
/O.NEW.KSHV.TO.W.0079.180414T0731Z-180414T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
231 AM CDT SAT APR 14 2018

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  Northeastern Jackson Parish in north central Louisiana...
  Southern Ouachita Parish in north central Louisiana...
  Southeastern Lincoln Parish in north central Louisiana...

* Until 300 AM CDT
    
* At 230 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 13 miles southeast of Ruston, moving northeast at 35
  mph.

  HAZARD...Tornado and quarter 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...
  Monroe, West Monroe and Brownsville-Bawcomville around 300 AM CDT. 

Other locations impacted by this tornadic thunderstorm include Eros,
Fondale, Mineral Springs, Caderville, Pine Grove, Luna and Lapine.

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 3246 9195 3245 9194 3241 9199 3238 9200
      3230 9202 3234 9250 3250 9250 3249 9194
TIME...MOT...LOC 0730Z 246DEG 31KT 3242 9246 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FB

1 follow-up statement

979 
WWUS54 KSHV 140744
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
244 AM CDT SAT APR 14 2018

LAC049-061-073-140800-
/O.CON.KSHV.TO.W.0079.000000T0000Z-180414T0800Z/
Jackson LA-Ouachita LA-Lincoln LA-
244 AM CDT SAT APR 14 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR
NORTHEASTERN JACKSON...SOUTHERN OUACHITA AND SOUTHEASTERN LINCOLN
PARISHES...
    
At 244 AM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southwest of Claiborne, moving east at 60 mph.

HAZARD...Tornado and quarter 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...
  Brownsville-Bawcom around 250 AM CDT. 
  Monroe, West Monroe and Richwood around 255 AM CDT. 

Other locations impacted by this tornadic thunderstorm include Eros,
Fondale, Mineral Springs, Caderville, Pine Grove, Luna and Lapine.

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 3246 9195 3245 9194 3241 9199 3238 9200
      3230 9202 3234 9250 3250 9242 3249 9194
TIME...MOT...LOC 0744Z 251DEG 52KT 3248 9229 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:11 PM CDT	Tornado Warning Tornado observed	SHV	Union	34 min
Apr 13, 7:35 PM CDT	Tornado Warning	SHV	Caldwell, Ouachita	40 min
Apr 13, 8:16 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Ouachita	29 min
Apr 13, 8:17 PM CDT	Tornado Warning	SHV	Caldwell, Ouachita	28 min
Apr 13, 11:30 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	45 min
Apr 13, 11:54 PM CDT	Tornado Warning	SHV	Caddo	21 min
Apr 14, 12:14 AM CDT	Tornado Warning	SHV	Bossier, Caddo	31 min
Apr 14, 12:15 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Caddo, De Soto, Red River, Webster	45 min
Apr 14, 12:43 AM CDT	Tornado Warning	SHV	Bossier, Claiborne, Webster	32 min
Apr 14, 12:46 AM CDT	Tornado Warning	SHV	Bossier, Claiborne, Webster	29 min
Apr 14, 12:59 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 6 more	46 min
Apr 14, 1:08 AM CDT	Tornado Warning	SHV	Claiborne, Webster	25 min
Apr 14, 1:10 AM CDT	Special Weather Statement	SHV	Sabine	65 min
Apr 14, 1:11 AM CDT	Tornado Warning	SHV	Claiborne	34 min
Apr 14, 1:30 AM CDT	Tornado Warning	SHV	Claiborne, Union	33 min
Apr 14, 1:45 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Caldwell, Claiborne, Jackson, Lincoln, Ouachita and 1 more	75 min
Apr 14, 1:52 AM CDT	Tornado Warning	SHV	Bienville, Jackson, Lincoln, Ouachita, Union	38 min
Apr 14, 1:56 AM CDT	Tornado Warning	SHV	Natchitoches, Winn	34 min
Apr 14, 2:26 AM CDT	Tornado Warning	SHV	Jackson, Winn	34 min
Apr 14, 2:27 AM CDT	Tornado Warning	SHV	Lincoln, Ouachita, Union	33 min
Apr 14, 2:51 AM CDT	Tornado Warning	SHV	Caldwell, Jackson, Ouachita	24 min
Apr 14, 2:59 AM CDT	Tornado Warning	SHV	Jackson, Ouachita, Union	31 min
Apr 14, 3:14 AM CDT	Tornado Warning	SHV	Caldwell, Ouachita	20 min
Apr 14, 4:24 AM CDT	Lake Wind Advisory	SHV	Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 11 more	15 hr

Nearby

Tornado Warnings in Louisiana, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.