Alert archive / Louisiana / Tornado Warnings in 1987
Tornado Warning 2, NWS New Orleans, LA
NWS New Orleans, LA issued this tornado warning at Nov 16, 1987, 4:37 PM CST for Washington Parish, Louisiana. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- Nov 16, 1987, 4:37 PM CST (22:37 UTC)
- Expired
- Nov 16, 1987, 5:45 PM CST
- In force
- 68 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Washington 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
Jackson, MS (KJAN), launched 12:00Z, 10.6 hours before the alert went out and 163 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
- 166 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 707 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 412 m²/s²
- 0-3 km storm-relative helicity
- 733 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KNEW 162237
TORNEW
LAC117-162345-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
437 PM CST MON NOV 16 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 545 PM CST FOR PEOPLE IN THE FOLLOWING PARISH...
IN SOUTHEAST LOUISIANA
...WASHINGTON
CIVIL DEFENSE REPORTED A TORNADO NEAR FOLSUM AND MOVING NORTHEAST
INTO THE SOUTHWEST PORTION OF WASHINGTON PARISH.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSH|IONS TO COVER YOUR BODY. AVOID WINDOWS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.What forecasters said that day
The local office's own words before this tornado 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, Nov 16, 1:55 PM CST, 2 hours 42 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 145 PM CST MON NOV 16 1987 ...TORNADO WATCH IN EFFECT FOR IBERIA LOWER ST MARTIN UPPER ST MARTIN ST MARY TANGIPAHOA AND WASHINGTON AND ADJOINING COASTAL WATERS OF THE FOLLOWING PARISHES IBERIA AND ST MARY UNTIL 8 PM CST. A SOLID LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM VICKSBURG MISSISSIPPI SOUTH ALONG THE MISSISSIPPI RIVER TO NATCHEZ AND CONTINUED SOUTH ACROSS SOUTHERN LOUISIANA TO LAFAYETTE TO THE COASTAL WATERS SOUTH OF LAFAYETTE. THE LINE WAS MOVING EAST AT 40 MILES AN HOUR. THESE THUNDERSTORMS ARE PRODUCING STRONG GUSTY WINDS...VERY HEAVY RAIN SMALL HAIL..DANGEROUS LIGHTNING AND POSSIBLE TORNADOES AS THEY MOVE EAST ACROSS THE AREA. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT AND IF THREATENING WEATHER IS SIGHTED GO TO A SAFE PLACE IMMEDIATELY. ELSEWHERE SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER SOUTHERN MISSISSIPPI AND SOUTHEAST LOUISIANA.
Special weather statement, Nov 16, 2:04 PM CST, 2 hours 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 205 PM CST MON NOV 16 1987 ....A TORNADO WATCH IS IN EFFECT FOR ALL OF EAST CENTRAL LOUISIANA UNTIL 8 PM THIS MONDAY EVENING... RADAR SHOWED A VERY STRONG LINE OF THUNDERSTORMS FROM THE LOUISIANA- MISSISSIPPI BORDER NORTH OF BATON ROUGE...SOUTHWEST ACROSS EAST AND WEST FELICIANA PARISHES...INTO POINTE COUPEE AND IBERVILLE PARISHES. THE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. THE THUNDERSTORMS HAVE PRODUCE HEAVY RAINS AND DAMAGING WINDS OVER A LARGE PART OF EAST CENTRAL LOUISIANA DURING THE PAST SEVERAL HOURS. PEOPLE IN EAST CENTRAL LOUISIANA SHOULD BE ALERT FOR SEVERE WEATHER UNTIL THE THUNDERSTORMS PASS YOUR AREA. ...A FLASH FLOOD WATCH IS IN EFFECT TODAY FOR A LARGE PART OF LOUISIANA INCLUDING AVOYELLES...CATAHOULA...CONCORDIA...AND ST LANDRY PARISHES...
Special weather statement, Nov 16, 2:47 PM CST, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 245 PM CST MON NOV 16 1987 ...TORNADO WATCH IN EFFECT FOR IBERIA LOWER ST MARTIN UPPER ST MARTIN ST MARY TANGIPAHOA AND WASHINGTON AND ADJOINING COASTAL WATERS OF THE FOLLOWING PARISHES IBERIA AND ST MARY UNTIL 8 PM CST. A SOLID LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM JUST WEST OF JACKSON MISSISSIPPI SOUTH TO JUST WEST OF MC COMB MISSISSIPPI TO BATON ROUGE TO MORGAN CITY TO VERMILION BAY. THE LINE WAS MOVING EAST AT 40 MILES AN HOUR. THESE THUNDERSTORMS ARE PRODUCING STRONG GUSTY WINDS...VERY HEAVY RAIN SMALL HAIL..DANGEROUS LIGHTNING AND POSSIBLE TORNADOES AS THEY MOVE EAST ACROSS THE AREA. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT AND IF THREATENING WEATHER IS SIGHTED GO TO A SAFE IMMEDIATELY. ELSEWHERE SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED ACROSS SOUTHERN MISSISSIPPI AND SOUTHEAST LOUISIANA.
Special weather statement, Nov 16, 3:16 PM CST, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 315 PM CST MON NOV 16 1987 ....THE TORNADO WATCH HAS BEEN CANCELLED FOR AVOYELLES...CATAHOULA... CONCORDIA...POINTE COUPEE...ST LANDRY...AND WEST FELICIANA. THE WATCH REMAINS IN EFFECT FOR THE REMAINDER OF EAST CENTRAL LOUISIANA... A SEVERE THUNDER STORM WARNING IS IN EFFECT UNTIL 345 PM CST FOR PEOPLE IN ASCENSION...LIVINGSTON AND ST HELENA PARISHES. THE LINE OF VERY STRONG THUNDERSTORMS WAS LOCATED FROM NEAR GREENSBURG SOUTH ACROSS LIVIMGSTON AND ASCENSION PARISHES. THIS LINE OF THUNDERSTORMS WAS MOVING EAST AT 35 MPH. THESE THUNDERSTORMS CONTINUE TO PRODUCE HEAVY RAINS AND DAMAGING WINDS OVER PARTS OF EAST CENTRAL LOUISIANA DURING THE PAST SEVERAL HOURS. PEOPLE IN EAST CENTRAL LOUISIANA SHOULD BE ALERT FOR SEVERE WEATHER UNTIL THE THUNDERSTORMS PASS YOUR AREA. ...A FLASH FLOOD WATCH IS IN EFFECT TODAY FOR A LARGE PART OF LOUISIANA INCLUDING AVOYELLES...CATA"HOULA...CONCORDIA...AND ST LANDRY.
Special weather statement, Nov 16, 3:51 PM CST, 46 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 245 PM CST MON NOV 16 1987 ...TORNADO WATCH IN EFFECT FOR IBERIA LOWER ST MARTIN UPPER ST MARTIN ST MARY TANGIPAHOA AND WASHINGTON AND ADJOINING COASTAL WATERS OF THE FOLLOWING PARISHES IBERIA AND ST MARY UNTIL 8 PM CST. ...SPECIAL MARINE WARNING COASTAL WTERS FROM VERMILION BAY EAST TO TIMVALIER BAY TIL 530 PM CST. A SOLID LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM JUST EAST OF JACKSON MISSISSIPPI SOUTH ACROSS MC COMB MISSISSIPPI TO BATON ROUGE LOUISIANA TO MORGAN CITY TO VERMILION BAY. THE LINE WAS MOVING EAST AT 35 MILES AN HOUR. THESE THUNDERSTORMS ARE PRODUCING STRONG GUSTY WINDS...VERY HEAVY RAIN SMALL HAIL..DANGEROUS LIGHTNING AND POSSIBLE TORNADOES AS THEY MOVE EAST ACROSS THE AREA. PERSONS IN THE WATCH AREA SHOULD REMAIN ALERT AND IF THREATENING WEATHER IS SIGHTED GO TO A SAFE IMMEDIATELY. ELSEWHERE SCATTERED SHOWERS AND STRODNG THUNDERSTORMS CONTINUED FROM JUST WEST OF LAUREL SOUTH ACROSS BOGALUSA LOUISIANA TO SLIDELL TO GRAND ISLE LOUISIANA AND OVER THE COASTAL AREA OF SOUTHEAST MISSISSIPPI.
Special weather statement, Nov 16, 4:30 PM CST, 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 415 PM CST MON NOV 16 1987 ....THE TORNADO WATCH HAS BEEN CANCELLED FOR ALL THE FOLLOWING PARISHES IN EAST CENTRAL LOUISIANA...EAST BATON ROUGE...EAST FELICIANA... IBERVILLE...ST HELENA...AND WEST BATON ROUGE. THE WATCH REMAINS IN EFFECT FOR ASCENSION AND LIVINGSTON PARISHES UNTIL 8 PM CST... AT 430 PM CST RADARS SHOWED THE LINE OF VERY STRONG THUNDERSTORMS FROM SOUTH OF MC COMB MISSISSIPPI TO EAST OF GONZALES. THIS LINE WAS MOVING EAST AT 35. OTHER THUNDERSTORMS AND RAIN WAS LOCATED OVER THE REMAINDER OF EAST CENTRAL. THE THUNDERSTORMS WILL CONTINUE PRODUCING VERY HEAVY RAINS AND STRONG GUSTY WINDS FOR THE NEXT FEW HOURS. WIND DAMAGE TO TREES...POWER LINES AND OTHER PROPERTY HAS BEEN WIDE SPREAD THROUGHOUT THE AREA. FLOODING OF STREETS AND OTHER LOW AREAS WILL CONTINUE FOR THE NEXT SEVERAL HOURS. PEOPLE IN OR NEAR THE WATCH AREA SHOULD BE ALERT FOR SEVERE WEAmTHER UNTIL THE THUNDERSTORMS PASS YOUR AREA. ...A FLASH FLOOD WATCH REMAINS IN EFFECT TODAY FOR PART OF LOUISIANA INCLUDING AVOYELLES...CATAHOULA...CONCORDIA...AND ST LANDRY.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 10:45 PM CST | Severe Thunderstorm Warning | LIX | Avoyelles, Catahoula, Concordia | 60 min |
| Nov 16, 12:00 AM CST | Severe Thunderstorm Warning | LIX | Catahoula, Concordia | 60 min |
| Nov 16, 8:15 AM CST | Flash Flood Warning | LIX | Catahoula | 4 hr |
| Nov 16, 12:20 PM CST | Severe Thunderstorm Warning | LIX | Avoyelles, Saint Landry | 70 min |
| Nov 16, 12:40 PM CST | Flash Flood Warning | LIX | Catahoula, Concordia | 4 hr |
| Nov 16, 12:55 PM CST | Severe Thunderstorm Warning | LIX | Concordia, Pointe Coupee, West Feliciana | 65 min |
| Nov 16, 12:55 PM CST | Severe Thunderstorm Warning | LIX | Iberville | 65 min |
| Nov 16, 2:15 PM CST | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Iberville, West Baton Rouge | 60 min |
| Nov 16, 2:52 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Helena | 53 min |
| Nov 16, 2:52 PM CST | Severe Thunderstorm Warning | LIX | Ascension | 53 min |
| Nov 16, 3:02 PM CST | Severe Thunderstorm Warning | LIX | Assumption, Iberia, Saint Martin, St. Mary | 58 min |
| Nov 16, 3:50 PM CST | Severe Thunderstorm Warning | LIX | Ascension, Livingston | 40 min |
| Nov 16, 5:52 PM CST | Tornado Warning | LIX | Lafourche, Saint Charles | 68 min |
Nearby
Tornado Warnings in Louisiana, 1987Every tornado warning in 1987Tornadoes 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; the sounding from the Mesonet's radiosonde archive.