Alert archive / Louisiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 13, NWS Lake Charles, LA

March 12, 1986Vernon Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 12, 1986, 3:00 AM CST for Vernon Parish, Louisiana. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Mar 12, 1986, 3:00 AM CST (09:00 UTC)
Expired
Mar 12, 1986, 4:00 AM CST
In force
60 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Vernon Parish, LA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.0 hours before the alert went out and 110 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 1986-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2215 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 1986-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 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
2215 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
3.0
Supercell composite
11.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Mar 11, 10:48 PM CST, 4 hours 12 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1045 PM CST TUE MAR 11 1986

...A TORNADO WATCH IS IN EFFECT UNTIL 4AM WEDNESDAY MORNING FOR...
BEAUREGARD...CALCASIEU...CAMERON...VERNON...ALLEN...AND JEFFERSON
DAVIS PARISHES IN SOUTHWEST LOUISIANA...AND FOR RAPIDES LA SALLE AND
GRANT PARISHES IN CENTRAL LOUISIANA...

AT 1025 PM...SCATTERED THUNDERSTORMS WERE OCCURRING OVER THE NORTHERN
TIP OF TOLEDO BEND RESERVOIR NORTHEAST TO NEAR MANSFIELD. THESE
THUNDERSTORMS WERE ONLY PART OF A LINE WHICH EXTENDED ACROSS NORTHWEST
LOUISIANA INTO SOUTHERN ARKANSAS.  THE LINE APPEARED TO BE MOVING EAST
AT 30 MPH.
Special weather statement, Mar 11, 11:44 PM CST, 3 hours 16 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1145 PM CST TUE MAR 11 1986

...A TORNADO WATCH IS IN EFFECT UNTIL 4AM WEDNESDAY MORNING FOR
MUCH OF SOUTHWEST AND CENTRAL LOUISIANA...

AT 1125 PM...A LINE OF NUMEROUS VERY HEAVY THUNDERSTORMS WAS LOCATED
FROM NORTHEAST OF MANSFIELD TO THE NORTH END OF TOLEDO BEND RESERVOIR
TO 30 MILES EAST OF LAKE LIVINGSTON TEXAS.  THE LINE WAS MOVING SOUTH-
EAST AT 30 MPH.

ANOTHER LINE OF VERY HEAVY THUNDERSTORMS WAS SHOWN IN EAST TEXAS FROM
NEAR LUFKIN TO LAKE LIVINGSTON TO NEAR CONROE.  THIS LINE OF THUNDER-
STORMS WAS ALSO MOVING SOUTHEAST AT 30 MPH.

A LARGE AREA OF RAIN WAS SHOWN WEST OF LUFKIN AND LAKE LIVINGSTON.
Special weather statement, Mar 12, 12:47 AM CST, 2 hours 13 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1240 AM CST WED MAR 12 1986

...A TORNADO WATCH IS IN EFFECT UNTIL 4AM WEDNESDAY MORNING FOR
MUCH OF SOUTHWEST AND CENTRAL LOUISIANA...

AT 1225 PM...A LINE OF NUMEROUS VERY HEAVY THUNDERSTORMS WAS LOCATED
FROM ABOUT 30 MILES NORTHWEST OF WINNFIELD TO THE CENTRAL PORTION OF
TOLEDO BEND RESERVOIR TO JUST WEST OF KOUNTZE TEXAS.

THE LINE WAS MOVING SOUTHEAST AT 30 MILES AN HOUR AND WILL MOVE INTO
VERNON PARISH IN SOUTHWEST LOUISIANA BY 1AM THIS MORNING.  STRONG GUSTY
WINDS AND VERY HEAVY RAINS WILL ACCOMPANY THE LINE OF THUNDERSTORMS.

RADAR ALSO SHOWED A LARGE AREA OF RAIN IN NORTHWEST LOUISIANA AND EAST
TEXAS FROM A HOUSTON...KIRBYVILLE TEXAS...MANSFIELD LOUISIANA LINE
TO WELL WEST OF HOUSTON...LUFKIN TEXAS...AND SAN AUGUSTINE TEXAS.

RAIN HAD ALSO DEVELOPED FROM JUST NORTH OF DERIDDER TO 30 MILES
NORTHEAST OF LEESVILLE.
Local storm report, Mar 12, 1:30 AM CST, 1 hour 30 minutes before
ATTN SELS A BPT

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PORT ARTHUR TX
130 AM CST WED MAR 12 1986

SUMMARY OF STORM DAMAGE

APPROXIMATELY MIDNIGHT
ANGELINA COUNTY TEXAS MINOR WIND DAMAGE TO TIMBER ALONG HIGHWAY 69
SOUTH OF LUFKIN.

APRX 1215AM CST  PUBLIC REPORTS WIND DAMAGE TO MOBIL HOME IN
COLMESNEIL, 12 MILES NORTH OF WOODVILLE IN TYLER COUNTY TEXAS.

APRX 1230AM CST WIND DAMAGE TO COMMERICAL DISTRICT OF THE CITY OF
PINELAN8D. POWER OUTAGE. LIMITED DETAILS.
Special weather statement, Mar 12, 2:56 AM CST, 4 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
250 AM CST WED MAR 12 1986

...A TORNADO WATCH IS IN EFFECT UNTIL 4AM WEDNESDAY MORNING FOR MUCH
SOUTHWEST LOUISIANA...

...A TORNADO WATCH REMAINS IN EFFECT UNTIL 6AM CST FOR CENTRAL
LOUISIANA...

AT 230 AM CST...A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WAS
LOCATED IN SOUTHEAST TEXAS FROM JUST EAST OF JASPER TO THE BEAUMONT AREA
TO THE COAST NEAR GALVESTON TEXAS.

THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 30 MILES AN HOUR
AND WILL MOVE INTO VERNON...BEAUREGARD....CALCASIEU...AND CAMERON
PARISHES IN SOUTHWEST LOUISIANA BY 4AM CST THIS WEDNESDAY MORNING.

STRONG GUSTY WINDS AND DANGEROUS LIGHTNING WILL LIKELY ACCOMPANY THE
LINE OF THUNDERSTORMS AS IT MOVES THROUGH SOUTHWEST LOUISIANA.

A VERY HEAVY THUNDERSTORM WAS OCCURRING IN THE EXTREME NORTHEAST CORNER
OF LA SALLE PARISH IN CENTRAL LOUISIANA.  MOVEMENT WAS NORTHEAST AT 45
MdILES AN HOUR.

A LARGE AREA OF RAIN CONTINUED TO COVER THE NORTHERN HALF OF LOUISIANA
AND MOST OF EAST AND SOUTHEAST TEXAS.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 1:00 AM CSTSevere Thunderstorm WarningLCHVernon60 min
Mar 12, 1:12 AM CSTTornado WarningLCHVernon18 min
Mar 12, 1:20 AM CSTTornado WarningLCHGrant, Rapides40 min
Mar 12, 4:40 AM CSTSevere Thunderstorm WarningLCHCalcasieu, Cameron60 min
Mar 12, 7:15 AM CSTSevere Thunderstorm WarningLCHLafayette30 min
Mar 12, 8:00 AM CSTSevere Thunderstorm WarningLCHCameron60 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1986Every severe thunderstorm warning in 1986

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.