Alert archive / Louisiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 21, NWS Lake Charles, LA

April 19, 1986Grant Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 19, 1986, 3:00 PM CST for Grant Parish, Louisiana. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Apr 19, 1986, 3:00 PM CST (21:00 UTC)
Expired
Apr 19, 1986, 4:00 PM CST
In force
60 min
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Grant 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 12:00Z, 9.0 hours before the alert went out and 176 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 12:00Z on 1986-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 770 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 12:00Z on 1986-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
770 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLCH 192112 COR
SVRLCH
LAC043-192200-

BULLETIN...IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ALEXANDRIA LOUISIANA
ISSUED BY LAKE CHARLES
300 PM CST SAT APR 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 4 PM CST FOR PEOPLE IN THE FOLLOWING PARISH OF

CENTRAL LOUISIANA...GRANT

AT 3PM CST...RADAR SHOWED A VERY HEAVY THUNDERSTORM MOVING EAST AT
30 MILES AN HOUR THROUGH GRANT PARISH.

THIS VERY HEAVY THUNDERSTORM WAS KNOWN TO PRODUCE GOLF BALL SIZED
HAIL...DANGEROUS LIGHTNING AND GUSTY WINDS WILL ACCOMPANY THIS STORM.

IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY AND YOU SHOULD ASK THE NEAREST LAW ENFORECEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORT TO THE LAKE CHARLES WEATHER SERVICE
STATION.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 3:55 PM CSTSevere Thunderstorm WarningLCHLaSalle65 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.