Alert archive / Louisiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 21, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 17, 1987, 3:30 PM CST for Lafayette Parish, Vermilion Parish, Louisiana. It was in force for 45 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 17, 1987, 3:30 PM CST (21:30 UTC)
- Expired
- Mar 17, 1987, 4:15 PM CST
- In force
- 45 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
Counties Lafayette Parish, LA, Vermilion Parish, LA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 17, 4:10 PM CST | Thunderstorm Wind 0 | Vermilion, LA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.5 hours before the alert went out and 99 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.
- Mixed-layer CAPE
- 133 J/kg
- Mixed-layer CIN
- -270 J/kg
- Mixed-layer LCL
- 658 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 544 m²/s²
- 0-3 km storm-relative helicity
- 810 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KLCH 172130
SVRLCH
LAC055-113-172215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
330 PM CST TUE MAR 17 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 415 PM CST FOR PEOPLE IN THE FOLLOWING PARISHES...
IN SOUTHWEST LOUISIANA
...EASTERN LAFAYETTE...EASTERN VERMILION
AT 325 PM CST RADAR SHOWED A LINE OF STRONG...POSSIBLY
SEVERE...THUNDNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.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 17, 9:59 AM CST, 5 hours 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PORT ARTHUR TX 1000AM CST TUE MAR 17 1987 THE NATIONAL WEATHER SERVICE HAS CANCELLED THE TORNADO WATCH FOR SOUTHhEAST TEXAS. THE WATCH CONTINUES IN LOUISIANA. DJK
Special weather statement, Mar 17, 10:06 AM CST, 5 hours 24 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 1000 AM CST TUE MAR 17 1987 ...A TORNADO WATCH IS IN EFFECT UNTIL 100 PM THIS AFTERNOON FOR SOUTHWEST AND CENTRAL LOUISIANA... ...STRONG AND GUSTY WINDS CONTINUE OVER SOUTHWEST LOUISIANA... AT 935 AM...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR OAKDALE TO LAKE CHARLES TO CAMERON...AND EXTENDED INTO THE GULF TO 70 MILES SOUTH OF SABINE PASS. MOVEMENT WAS EAST AT 35 MPH. ANOTHER LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN HAD DEVELOPED FROM JUST NORTH OF LEESVILLE TO NEAR DEQUINCY TO BEAUMONT TEXAS... AND EXTENDED INTO THE TEXAS COASTAL WATERS SOUTH OF HIGH ISLAND. STRONG SOUTHERLY WINDS AHEAD OF THESE THUNDERSTORMS HAD PRODUCED WIND GUSTS OF 60 MPH IN LAFAYETTE. THUNDERSTORM WINDS HAD ALSO PRODUCED GUSTS OF 45 MPH IN LAKE CHARLES. AS THESE LINES OF STRONG STORMS CONTINUE TO MOVE EASTWARD...VERY HEAVY RAIN ALONG WITH FREQUENT WIND GUSTS OF 50 MPH OR GREATER CAN BE EXPECTED IN SECTIONS OF SOUTHWEST AND CENTRAL LOUISIANA. ELSEWHERE...RAIN COVERED MOST OF CENTRAL AND EXTREME SOUTHWEST LOUISIANA...EXTREME EAST TEXAS...AND THE UPPER TEXAS COASTAL WATERS. LIGHT RAIN WAS SHOWN FROM MORGAN CITY TO BATON ROUGE TO ALEXANDRIA.
Local storm report, Mar 17, 2:23 PM CST, 1 hour 7 minutes before
SEVERE STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1425 CST MON MAR 17 1987
1400 PM CST VILLE PLATTE, LOUISIANA
WIND DAMAGE...TREES AND LIMBS.
1404 PM CST CROWLEY, LOUISISNA
WIND DAMAGE...TREES DAOWN...POWERS LINE DOWN OVER
HOME.
1415 PM CST VILLE PLATTE, LOUISIANA
BARN AND BUS SHED DESTROYED.
REPORTS RECEIVED BY WSO ^LAKE CHARLES
NNNNThe office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 8:42 AM CST | Severe Thunderstorm Warning | LCH | Vernon | 63 min |
| Mar 17, 10:22 AM CST | Tornado Warning | LCH | Cameron | 38 min |
| Mar 17, 1:14 PM CST | Severe Thunderstorm Warning | LCH | Acadia, Evangeline, Vermilion | 76 min |
| Mar 17, 2:25 PM CST | Severe Thunderstorm Warning | LCH | Lafayette, Vermilion | 65 min |
| Mar 17, 2:49 PM CST | Severe Thunderstorm Warning | LCH | Acadia | 41 min |
| Mar 17, 4:07 PM CST | Severe Thunderstorm Warning | LCH | Lafayette, Vermilion | 53 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1987Every severe thunderstorm warning in 1987
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.