Alert archive / Louisiana / Tornado Warnings in 2010

Tornado Warning 13, NWS Lake Charles, LA

December 29, 2010Iberia Parish, Saint Martin Parish, Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this tornado warning at Dec 29, 2010, 8:50 PM CST for Iberia Parish, Saint Martin Parish, Vermilion Parish, Louisiana. It was in force for 40 min. 6 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: Dec 29, 2010, 8:50 PM CST (02:50 UTC)
Expired: Dec 29, 2010, 9:30 PM CST
In force: 40 min
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon

Counties Iberia Parish, LA, Saint Martin Parish, LA, Vermilion Parish, LA

The radar

The Lake Charles radar (KLCH), 121 km from the middle of the area, began a volume at 02:50 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
Dec 29, 8:50 PM CST	TSTM WND DMG	1 N Intracoastal City, LA	VERMILLION PARISH SHERIFF REPORTS TREES DOWN NEAR LA 684 AND ALSO ALONG HWY 82 WEST OF HWY 333
Dec 29, 8:52 PM CST	TSTM WND GST 75	Forked Island, LA	PUBLIC REPORTS WIND ESTIMATE OF 70-75 MPH. ALSO REPORTS A PARKED FORD RANGER WAS PUSHED A SHORT DISTANCE
Dec 29, 8:58 PM CST	TSTM WND GST 80	3 N Intracoastal City, LA	PUBLIC REPORTS A MEASURED WIND GUST OF 80 MPH NEAR MOUTON COVE.
Dec 29, 9:00 PM CST	TSTM WND DMG	1 N Intracoastal City, LA	PUBLIC REPORTS SIGNIFICANT DAMAGE TO HOMES AS WELL AS TREES AND POWERLINES DOWN.
Dec 29, 9:00 PM CST	TSTM WND GST 40	1 W Intracoastal City, LA	PUBLIC ESTIMATED A WIND GUST OF 40 MPH.
Dec 29, 9:00 PM CST	TSTM WND GST 70	1 N Intracoastal City, LA	PUBLIC REPORTS WINDS SUSTAINED AT 70 MPH AND GUSTING TO 85 MPH.

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

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 2.8 hours before the alert went out and 119 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: 217 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 332 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

315 
WFUS54 KLCH 300250
TORLCH
LAC045-099-113-300330-
/O.NEW.KLCH.TO.W.0013.101230T0250Z-101230T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
850 PM CST WED DEC 29 2010

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN IBERIA PARISH IN SOUTH CENTRAL LOUISIANA...
  THIS INCLUDES...NEW IBERIA...AVERY ISLAND...
  WEST CENTRAL ST. MARTIN PARISH IN SOUTH CENTRAL LOUISIANA...
  THIS INCLUDES ST. MARTINVILLE...
  EAST CENTRAL VERMILION PARISH IN SOUTHWEST LOUISIANA...
  THIS INCLUDES...INTRACOASTAL CITY...FORKED ISLAND...ABBEVILLE...

* UNTIL 930 PM CST

* AT 845 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR FORKED
  ISLAND...MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ESTHER...HENRY...ERATH...DELCAMBRE...JEFFERSON ISLAND...COTEAU...
  CADE...ACADIANA REGIONAL AIRPORT AND LYDIA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NATIONAL WEATHER SERVICE RADAR INDICATES A TORNADO MAY FORM AT ANY
TIME. TAKE COVER NOW! ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR AWAY FROM WINDOWS.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT
337-477-5285 EXTENSION 1.

LAT...LON 2975 9230 2992 9235 3007 9202 3005 9196
      3010 9193 3017 9178 2987 9169 2981 9175
      2983 9189 2981 9191 2983 9196 2979 9197
      2976 9207
TIME...MOT...LOC 0250Z 256DEG 39KT 2986 9220

$$

23

1 follow-up statement

918 
WWUS54 KLCH 300322
SVSLCH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
922 PM CST WED DEC 29 2010

LAC113-300329-
/O.CAN.KLCH.TO.W.0013.000000T0000Z-101230T0330Z/
VERMILION LA-
922 PM CST WED DEC 29 2010

...THE TORNADO WARNING FOR EAST CENTRAL VERMILION PARISH IS
CANCELLED...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND HEAVY RAIN. STAY INDOORS...
AWAY FROM WINDOWS.

LAT...LON 2982 9182 2983 9182 2983 9188 2982 9193
      2984 9197 2996 9199 3005 9196 3010 9193
      3017 9178 2987 9169 2981 9175
TIME...MOT...LOC 0319Z 256DEG 39KT 2993 9190

$$

LAC045-099-300330-
/O.CON.KLCH.TO.W.0013.000000T0000Z-101230T0330Z/
IBERIA LA-ST. MARTIN LA-
922 PM CST WED DEC 29 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CST FOR WEST
CENTRAL ST. MARTIN AND NORTHWESTERN IBERIA PARISHES...

AT 918 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR AVERY
ISLAND..MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
COTEAU...CADE...ACADIANA REGIONAL AIRPORT...NEW IBERIA...LYDIA AND
ST. MARTINVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NATIONAL WEATHER SERVICE RADAR INDICATES A TORNADO MAY FORM AT ANY
TIME. TAKE COVER NOW! ABANDON MOBILE HOMES AND VEHICLES. MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR AWAY FROM WINDOWS.



LAT...LON 2982 9182 2983 9182 2983 9188 2982 9193
      2984 9197 2996 9199 3005 9196 3010 9193
      3017 9178 2987 9169 2981 9175
TIME...MOT...LOC 0319Z 256DEG 39KT 2993 9190

$$

MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 29, 6:22 PM CST	Areal Flood Advisory	LCH	Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis	113 min
Dec 29, 6:51 PM CST	Special Marine Warning	LCH		54 min
Dec 29, 7:43 PM CST	Areal Flood Advisory	LCH	Acadia, Cameron, Iberia, Jefferson Davis, Lafayette, Saint Martin and 1 more	2 hr
Dec 29, 7:50 PM CST	Special Marine Warning	LCH		55 min
Dec 29, 7:59 PM CST	Severe Thunderstorm Warning	LCH	Acadia, Calcasieu, Cameron, Jefferson Davis, Vermilion	61 min
Dec 29, 8:45 PM CST	Special Marine Warning	LCH		60 min
Dec 29, 9:01 PM CST	River Flood Warning	LCH	Lafayette, Vermilion	19 hr
Dec 29, 9:32 PM CST	Tornado Warning	LCH	Iberia, Saint Martin	43 min
Dec 29, 9:37 PM CST	Special Marine Warning	LCH		53 min
Dec 29, 9:38 PM CST	Severe Thunderstorm Warning	LCH	Iberia, Saint Martin, St. Mary	52 min
Dec 29, 10:26 PM CST	Tornado Warning	LCH	Iberia, Saint Martin, St. Mary	19 min
Dec 29, 10:33 PM CST	Severe Thunderstorm Warning	LCH	Saint Martin, St. Mary	57 min
Dec 30, 12:28 AM CST	Special Marine Warning	LCH		62 min
Dec 30, 1:37 AM CST	Special Marine Warning	LCH		53 min
Dec 30, 2:29 AM CST	Special Marine Warning	LCH		61 min
Dec 30, 9:09 AM CST	Small Craft Advisory	LCH		45 hr

Nearby

Tornado Warnings in Louisiana, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.