Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 21, NWS Lake Charles, LA

May 11, 2021Iberia Parish, St. Mary Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at May 11, 2021, 6:57 PM CDT for Iberia Parish, St. Mary Parish, Louisiana. It was in force for 33 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 11, 2021, 6:57 PM CDT (23:57 UTC)
Expired: May 11, 2021, 7:30 PM CDT
In force: 33 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Iberia Parish, LA, St. Mary Parish, LA

The radar

The Lake Charles radar (KLCH), 141 km from the middle of the area, began a volume at 23:58 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 12:00Z, 12.0 hours before the alert went out and 140 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: 2925 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

As transmitted.

320 
WFUS54 KLCH 112357
TORLCH
LAC045-101-120030-
/O.NEW.KLCH.TO.W.0021.210511T2357Z-210512T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lake Charles LA
657 PM CDT Tue May 11 2021

The National Weather Service in Lake Charles has issued a

* Tornado Warning for...
  Northwestern Iberia Parish in south central Louisiana...
  Northwestern St. Mary Parish in south central Louisiana...

* Until 730 PM CDT.
    
* At 656 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Lydia, or 7 miles west of Jeanerette, moving
  northeast at 15 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...
  New Iberia around 700 PM CDT.
  Lydia around 705 PM CDT.
  Jeanerette around 725 PM CDT.
  Sorrel and Lake Fausse Pointe around 730 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 2979 9177 2983 9181 2982 9182 2989 9189
      3009 9177 3009 9176 3010 9177 3012 9175
      3012 9174 2992 9151
TIME...MOT...LOC 2356Z 242DEG 13KT 2988 9179 

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

$$

24

1 follow-up statement

207 
WWUS54 KLCH 120010
SVSLCH

Severe Weather Statement
National Weather Service Lake Charles LA
710 PM CDT Tue May 11 2021

LAC045-101-120030-
/O.CON.KLCH.TO.W.0021.000000T0000Z-210512T0030Z/
Iberia LA-St. Mary LA-
710 PM CDT Tue May 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR NORTH
CENTRAL IBERIA AND NORTHWESTERN ST. MARY PARISHES...
    
At 709 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lydia, or near Jeanerette, moving east at 15 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...
  Jeanerette around 725 PM CDT.
  Sorrel around 735 PM CDT.
  Lake Fausse Pointe around 740 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 2982 9175 2986 9180 2991 9184 3010 9172
      2992 9151
TIME...MOT...LOC 0009Z 248DEG 13KT 2989 9173 

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

$$

24

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 9:59 PM CDT	River Flood Warning	LCH	Acadia, Evangeline, Saint Landry	23 hr
May 11, 3:20 AM CDT	Flash Flood Watch	LCH	Allen, Avoyelles, Beauregard, Cameron, Evangeline, Lafayette and 4 more	34 hr
May 11, 6:14 AM CDT	Special Weather Statement	LCH	Saint Martin	16 min
May 11, 6:29 AM CDT	Special Weather Statement	LCH	Vernon	31 min
May 11, 6:50 AM CDT	Special Weather Statement	LCH	Vernon	25 min
May 11, 6:55 AM CDT	Severe Thunderstorm Warning	LCH	Rapides, Vernon	18 min
May 11, 7:17 AM CDT	Special Weather Statement	LCH	Acadia	43 min
May 11, 7:22 AM CDT	Special Weather Statement	LCH	Rapides	23 min
May 11, 7:48 AM CDT	Severe Thunderstorm Warning	LCH	Lafayette, Saint Landry	16 min
May 11, 8:04 AM CDT	Special Weather Statement	LCH	Acadia, Lafayette	41 min
May 11, 8:40 AM CDT	Severe Thunderstorm Warning	LCH	Allen, Jefferson Davis	33 min
May 11, 8:52 AM CDT	Flash Flood Warning	LCH	Acadia, Lafayette, Saint Landry, Saint Martin	3 hr
May 11, 10:24 AM CDT	River Flood Watch	LCH	Allen, Evangeline	25 hr
May 11, 10:24 AM CDT	River Flood Warning	LCH	Lafayette, Saint Landry, Saint Martin	4 days
May 11, 10:24 AM CDT	River Flood Warning	LCH	Lafayette, Saint Martin, Vermilion	33 days
May 11, 10:24 AM CDT	River Flood Warning	LCH	Allen, Calcasieu, Jefferson Davis	18 days
May 11, 10:24 AM CDT	River Flood Warning	LCH	Allen, Beauregard	21 days
May 11, 10:24 AM CDT	River Flood Warning	LCH	Allen, Beauregard	4 days
May 11, 6:43 PM CDT	Special Weather Statement	LCH	Saint Martin	47 min

Nearby

Tornado Warnings in Louisiana, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.