Alert archive / Louisiana / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 13, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at May 4, 1989, 1:30 PM CDT for Pointe Coupee Parish, Louisiana. It was in force for 60 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
- May 4, 1989, 1:30 PM CDT (18:30 UTC)
- Expired
- May 4, 1989, 2:30 PM CDT
- In force
- 60 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Pointe Coupee 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 |
|---|---|---|---|
| May 4, 1:30 PM CDT | Tornado F1 | Pointe Coupee, 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, 6.5 hours before the alert went out and 167 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
- 1743 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 559 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 331 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 8.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBTR 041842
SVRBTR
LAC033-077-041930-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BATON ROUGE LA
130 PM CDT THU MAY 4 1989
THE NATIONAL WEATHER SERVICE IN BATON ROUGE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 PM CDT
FOR PEOPLE IN THE FOLLOWING PARISHES...
IN EAST CENTRAL LOUISIANA
...NORTHERN EAST BATON ROUGE...SOUTHEASTERN POINTE COUPEE
RADAR SHOWED A POSSIBLE SEVERE THUNDERSTORM JUST SOUTHEAST OF NEW
ROADS IN SOUTHEAST POINTE COUPEE PARISH...MOVING EAST ABOUT 30 MPH.
SOME POWER LINES REPORTED DOWN IN THE NEW ROADS AREA AROUND 130PM.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS 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, May 4, 8:44 AM CDT, 4 hours 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 845 AM CDT THU MAY 4 1989 ...STRONG THUNDERSTORMS WERE MOVING TO PARTS OF EAST CENTRAL LOUISIANA... A LINE OF SCATTERED STRONG THUNDERSTORMS WERE OCCURRING FROM NEAR ALEXANDRIA...SOUTHWEST TO NEAR LAKE CHARLES. THESE THUNDERSTORMS WILL MOVE TO AVOYELLES...CATAHOULA AND CONCORDIA PARISHES WITHIN THE HOUR. PEOPLE IN THESE PARISHES CAN EXPECT STRONG GUSTY WIND...VERY HEAVY RAIN WHICH WILL LIKELY CAUSE FLOODING OF STREETS AND LOW LYING AREA AND POSSIBLY SOME HAIL AS THESE THUNDERSTORMS MOVE THROUGH.
Special weather statement, May 4, 9:58 AM CDT, 3 hours 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 955 AM CDT THU MAY 4 1989 ...A TORNADO WATCH IS IN EFFECT UNTIL 4PM FOR PEOPLE IN AVOYELLES... CATAHOULA AND CONCORDIA PARISHES... RADAR SHOWED AN ISOLATED STRONG THUNDERSTORM NEAR FERRIDAY LOUISIANA IN NORTHERN CONCORDIA PARISH MOVING EAST ABOUT 30 MPH. AN ALMOST SOLID BAND OF STRONG THUNDERSTORMS OVER NORTHERN LOUISIANA WILL BE APPROACHING CATHOULA AND CONCORDIA PARISHES IN THE NEXT FEW HOURS. ELSEWHERE...NUMEROUS PATCHES OF RAIN AND A FEW THUNDERSTORMS WERE OCCURRING BETWEEN BATON ROUGE...SIMMESPORT AND LAKE CHARLES AND OVER SOUTHWEST MISSISSIPPI. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONJS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 4, 10:07 AM CDT, 3 hours 23 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE BATON ROUGE LA 955 AM CDT THU MAY 4 1989 ...A TORNADO WATCH IS IN EFFECT UNTIL 4PM FOR PEOPLE IN AVOYELLES... CATAHOULA AND CONCORDIA PARISHES IN EAST CENTRAL LOUISIANA... RADAR SHOWED AN ISOLATED STRONG THUNDERSTORM NEAR FERRIDAY LOUISIANA IN NORTHERN CONCORDIA PARISH MOVING EAST ABOUT 30 MPH. AN ALMOST SOLID BAND OF STRONG THUNDERSTORMS OVER NORTHERN LOUISIANA WILL BE APPROACHING CATHOULA AND CONCORDIA PARISHES IN THE NEXT FEW HOURS. ELSEWHERE...NUMEROUS PATCHES OF RAIN AND A FEW THUNDERSTORMS WERE OCCURRING BETWEEN BATON ROUGE...SIMMESPORT AND LAKE CHARLES AND OVER SOUTHWEST MISSISSIPPI. REMEMBER...A TORNADO WAT[CH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 4, 11:00 AM CDT, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 1100 AM CDT THU MAY 4 1989 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 4PM FOR PEOPLE IN AVOYELLES...CATAHOULA AND CONCORDIA PARISHES IN EAST CENTRAL LOUISIANA... RADAR SHOWED A SOLID LINE OF STRONG THUNDERSTORMS FROM NEAR WINNSBORO EXTENDING WEST TO NEAR WINNFIELD LOUISIANA. MOVEMENT WAS SOUTH ABOUT 25 MPH. THESE THUNDERSTORMS WILL BE MOVING TO CATHOULA AND CONCORDIA PARISHES WITHIN THE HOUR. ELSEWHERE...AN ALMOST SOLID AREA OF LIGHT RAIN AND SCATTERED STRONG THUNDERSTORMS WERE OCCURRING FROM SOUTHWEST MISSISSIPPI...SOUTHWEST TO BETWEEN BATON ROUGE AND LAFAYETTE. THIS AREA WAS MOVING EAST ABOUT 25 MPH. SOME FLOODING OF STREETS AND LOW LYING AREAS ARE POSSIBLE IN EAST BATON ROUGE AND SURROUNDING PARISHES AS THESE THUNDERSTORMS MOVE THROUGH DURING THE NEXT FEW HOURS. < REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTO*RMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONIDTIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 4, 11:55 AM CDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA NOON CDT THU MAY 4 1989 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 4PM FOR PEOPLE IN AVOYELLES...CATAHOULA AND CONCORDIA PARISHES IN EAST CENTRAL LOUISIANA... RADAR SHOWED A SOLID LINE OF STRONG THUNDERSTORMS ACROSS NORTHERN CONCORDIA AND CATAHOULA PARISHES EXTENDING WEST TO JUST SOUTH OF WINNFIELD THEN SOUTHWEST TO NEAR FORT POLK LOUISIANA. MOVEMENT WAS SOUTH ABOUT 25 MPH. THESE THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH CATAHOULA AND CONCORDIA PARISHES DURING THE HOUR AND MOVE TO NORTHERN AVOYELLES PARISH WITHIN THE NEXT ONE TO TWO HOURS. ELSEWHERE...AN ALMOST SOLID AREA OF LIGHT RAIN AND SCATTERED STRONG THUNDERSTORMS WERE OCCURRING FROM LAFAYETTE TO SIMMESPORT...EAST ACROSS BATON ROUGE...TO BETWEEN NEW ORLEANS AND MCCOMB MISSISSIPPI. SOME FLOODING OF STREETS AND LOW LYING AREAS ARE ALSO POSSIBLE THROUGHOUT ALL OF EAST CENTRAL LOUISIANA AS THESE THUNDERSTORMS PASS THROUGH TODAY. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONIDTIONS AND LISTEN FnOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 4, 12:59 PM CDT, 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 100 PM CDT THU MAY 4 1989 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 4PM FOR PEOPLE IN AVOYELLES...CATAHOULA AND CONCORDIA PARISHES IN EAST CENTRAL LOUISIANA... RADAR SHOWED A SOLID LINE OF STRONG THUNDERSTORMS ACROSS THE SOUTH PARTS OF CONCORDIA AND CATAHOULA PARISHES...EXTENDING WEST ACROSS AVOYELLES PARISH. MOVEMENT CONTINUED SOUTH ABOUT 30 MPH. THESE THUNDERSTORMS WILL MOVE TO THE NORT PARTS OF ST. LANDRY... POINTE COUPEE AND WEST FELICIANA PARISHES WITHIN THE HOUR. ELSEWHERE...AN ALMOST SOLID AREA OF LIGHT RAIN AND SCATTERED STRONG THUNDERSTORMS WERE OCCURRING BETWEEN NEW ORLEANS AND MCCOMB...WEST ACROSS BATON ROUGE AND SIMMESPORT TO NEAR LAKE CHARLES AND EUNICE. FLOODING OF STREETS AND LOW LYING AREAS ARE ALSO POSSIBLE THROUGHOUT EAST CENTRAL LOUISIANA AS THESE THUNDERSTORMS MOVE THROUGH TODAY. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONIDTIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:30 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge | 60 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1989Every severe thunderstorm warning in 1989
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.