Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 43, NWS Lake Charles, LA

May 22, 20174 parishes in Louisiana

NWS Lake Charles, LA issued this tornado warning at May 22, 2017, 7:44 PM CDT for 4 parishes in Louisiana. It was in force for 46 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
May 22, 2017, 7:44 PM CDT (00:44 UTC)
Expired
May 22, 2017, 8:30 PM CDT
In force
46 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Acadia Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 52 km from the middle of the area, began a volume at 00:44 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 nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.7 hours before the alert went out and 51 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2017-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 405 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2017-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
405 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

702 
WFUS54 KLCH 230044
TORLCH
LAC001-023-053-113-230130-
/O.NEW.KLCH.TO.W.0043.170523T0044Z-170523T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
744 PM CDT MON MAY 22 2017

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Northeastern Cameron Parish in southwestern Louisiana...
  Southeastern Jefferson Davis Parish in southwestern Louisiana...
  Southwestern Acadia Parish in southwestern Louisiana...
  Northwestern Vermilion Parish in southwestern Louisiana...

* Until 830 PM CDT
    
* At 744 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Thornwell, or near Lake Arthur, moving east 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 dangerous storm will be near...
  Lake Arthur around 800 PM CDT. 
  Klondike around 805 PM CDT. 
  Gueydan, Morse and Riceville around 825 PM CDT. 

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 2997 9280 3013 9282 3016 9250 2997 9248
TIME...MOT...LOC 0044Z 263DEG 21KT 3006 9278 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Rua
3 follow-up statements
255 
WWUS54 KLCH 230100
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
800 PM CDT MON MAY 22 2017

LAC023-230109-
/O.CAN.KLCH.TO.W.0043.000000T0000Z-170523T0130Z/
Cameron LA-
800 PM CDT MON MAY 22 2017

...THE TORNADO WARNING FOR NORTHEASTERN CAMERON PARISH IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3004 9262 3004 9272 3013 9273 3016 9250
      2997 9248 2997 9262
TIME...MOT...LOC 0059Z 263DEG 21KT 3007 9268 

$$

LAC001-053-113-230130-
/O.CON.KLCH.TO.W.0043.000000T0000Z-170523T0130Z/
Jefferson Davis LA-Acadia LA-Vermilion LA-
800 PM CDT MON MAY 22 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHEASTERN JEFFERSON DAVIS...SOUTHWESTERN ACADIA AND NORTHWESTERN
VERMILION PARISHES...
    
At 759 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Lake Arthur, moving east 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 dangerous storm will be near...
  Gueydan, Morse and Riceville around 825 PM CDT. 

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 3004 9262 3004 9272 3013 9273 3016 9250
      2997 9248 2997 9262
TIME...MOT...LOC 0059Z 263DEG 21KT 3007 9268 

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

$$

Rua
257 
WWUS54 KLCH 230115
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
815 PM CDT MON MAY 22 2017

LAC053-230124-
/O.CAN.KLCH.TO.W.0043.000000T0000Z-170523T0130Z/
Jefferson Davis LA-
815 PM CDT MON MAY 22 2017

...THE TORNADO WARNING FOR SOUTHEASTERN JEFFERSON DAVIS PARISH IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3001 9260 3004 9261 3014 9261 3016 9250
      2997 9248 2997 9260
TIME...MOT...LOC 0114Z 260DEG 22KT 3009 9257 

$$

LAC001-113-230130-
/O.CON.KLCH.TO.W.0043.000000T0000Z-170523T0130Z/
Acadia LA-Vermilion LA-
815 PM CDT MON MAY 22 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHWESTERN ACADIA AND NORTHWESTERN VERMILION PARISHES...
    
At 814 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Riceville moving east 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 dangerous storm will be near...
  Gueydan around 820 PM CDT. 
  Morse and Riceville around 825 PM CDT. 

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 3001 9260 3004 9261 3014 9261 3016 9250
      2997 9248 2997 9260
TIME...MOT...LOC 0114Z 260DEG 22KT 3009 9257 

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

$$

Rua
518 
WWUS54 KLCH 230127
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
827 PM CDT MON MAY 22 2017

LAC001-113-230137-
/O.EXP.KLCH.TO.W.0043.000000T0000Z-170523T0130Z/
Acadia LA-Vermilion LA-
827 PM CDT MON MAY 22 2017

...THE TORNADO WARNING FOR SOUTHWESTERN ACADIA AND NORTHWESTERN
VERMILION PARISHES WILL EXPIRE AT 830 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

LAT...LON 3001 9260 3004 9261 3014 9261 3016 9250
      2997 9248 2997 9260
TIME...MOT...LOC 0127Z 263DEG 21KT 3010 9250 

$$

Rua

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 2:58 AM CDTSpecial Marine WarningLCH62 min
May 23, 4:01 AM CDTSpecial Marine WarningLCH59 min
May 23, 3:39 PM CDTSmall Craft AdvisoryLCH21 hr

Nearby

Tornado Warnings in Louisiana, 2017Every tornado warning in 2017Tornadoes 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.