Alert archive / Louisiana / Flash Flood Warnings in 1989
Flash Flood Warning 2, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Jun 27, 1989, 11:46 PM CDT for Iberville Parish, Louisiana. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 27, 1989, 11:46 PM CDT (04:46 UTC)
- Expired
- Jun 28, 1989, 3:45 AM CDT
- In force
- 4 hr
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Iberville 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 4.8 hours before the alert went out and 158 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
- 1856 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBTR 280453
FFWBTR
LAC033-037-047-121-280845-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BATON ROUGE LA
1146 PM CDT TUE JUN 27 1989
THE NATIONAL WEATHER SERVICE IN BATON ROUGE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 345 AM CDT
FOR PEOPLE IN THE FOLLOWING PARISHES...
IN EAST CENTRAL LOUISIANA
...EAST BATON ROUGE...EAST FELICIANA...IBERVILLE
...WEST BATON ROUGE
RAINFALL AMOUNTS OF 3 TO 6 INCHES WAS INDICATED OVER THESE PARISHES
AND ADDITIONAL RAINS IN EXCESS OF 3 INCHES IS LIKELY DURING THE
NEXT SEVERAL HOURS
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.What forecasters said that day
The local office's own words before this flash flood 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, Jun 27, 6:03 PM CDT, 5 hours 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 600 PM CDT TUE JUN 27 1989 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 7 PM CDT FOR AVOYELLES... CATAHOULA...CONCORDIA...IBERVILLE...POINT COUPEE...ST LANDRY...WEST BATON ROUGE AND WEST FELICIANA PARISHES IN EAST CENTRAL LOUISIANA... ...A FLASH FLOOD WATCH IS IN EFFECT THROUGH TONIGHT FOR AVOYELLES... CATAHOULA...CONCORDIA AND ST LANDRY PARISHES IN EAST CENTRAL LOUISIANA... RADAR SHOWED A SOLID LINE OF THUNDERSTORMS HAD FORMED FROM WEST FELICIANA PARISH EXTENDING SOUTHWEST ACROSS POINTE COUPEE PARISH TO LAFAYETTE. MOVEMENT WAS SOUTHEST ABOUT 15 MPH. THIS LINE WILL MOVE TO EAST FELICIANA...EAST AND WEST BATON ROUGE AND IBERVILLE PARISHES WITHIN THE NEXT ONE TO TWO HOURS. FLOODING OF STREETS AND LOW LYING AREAS IS LIKELY AS THESE THUNDERSTORMS PASS THROUGH. < SCATTERED THUNDERSTORMS WERE OCCURRING IN THE BATON ROUGE AREA. REMEMBER...A TORNADO WATCH MEANS CONDIuTIONS 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, Jun 27, 6:42 PM CDT, 5 hours 4 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 640 PM CDT TUE JUN 27 1989 ...A TORNADO WATCH IS IN EFFECT UNTIL 7 PM CDT FOR IBERIA...LOWER ST MARTIN...UPPER ST MARTIN...AND ST MARY INCLUDING THE ADJACENT COASTAL WATERS IN SOUTHEAST LOUISIANA... A BAND OF THUNDERSTORMS WITH HEAVY RAIN WAS OCCURRING BETWEEN LAFAYETTE AND MORGAN CITY SOUTH INTO THE GULF. THE BAND OF HEAVY RAIN EXTENDED NORTH ACROSS THE SIMMESPORT AREA TO NEAR VICKSBURG MISSISSIPPI. THE AREA OF RAIN WAS MOVING VERY SLOWLY EAST. PEOPLE IN SOUTHERN LOUISIANA PARISHES OF UPPER ST MARTIN AND IBERIA SHOULD BE ALERT TO THE POSSIBILITY OF URBAN FLOODING OR FLOODING OF ROADS DUE TO THIS SLOW AREAL MOVEMENT. OTHERWISE...A BAND OF THUNDERSTORMS WAS OCCURRING BETWEEN BOGALUSA LOUISIANA AND JACKSON MISSISSIPPI. THUNDERSTORMS WERE MOVING NORTH ABOUT 20 MILES AN HOUR.
Special weather statement, Jun 27, 6:53 PM CDT, 4 hours 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 700 PM CDT TUE JUN 27 1989 ...THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUE OVER PARTS OF EAST CENTRAL LOUISIANA... RADAR SHOWED A SOLID LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN FROM EASTERN CONCORDIA PARISH SOUTH ACROSS POINTE COUPEE PARISH TO NEAR NEW IBERIA. MOVEMENT WAS EAST ABOUT 10 MPH. THESE THUNDERSTORMS WILL MOVE TO WEST FELICIANA...WEST BATON ROUGE AND NORTHERN IBERVILLE PARISHES WITHIN THE NEXT ONE TO TWO HOURS. SINCE THESE THUNDERSTORMS ARE MOVING SLOWLY EAST...FLOODING OF STREETS AND LOW LYING AREAS WILL OCCUR. ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR PEOPLE IN AVOYELLES... CATAHOULA...CONCORDIA AND ST. LANDRY PARISHES IN EAST CENTRAL LOUISIANA TONIGHT... < PEOPLE THROUGHOUT EAST CENTRAL LOUISIANA SHOULD KEEP UP WITH THE LATEST WEATHER CONDITIONS FOR ANY ADDITIONAL DEVELOPEMENT DURING THE NIGHT.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 11:46 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, East Feliciana, West Baton Rouge | 4 hr |
| Jun 28, 5:50 AM CDT | Flash Flood Warning | LIX | East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana | 4 hr |
| Jun 28, 7:57 AM CDT | Flash Flood Warning | LIX | Iberia, Saint Martin, St. Mary | 2 hr |
| Jun 28, 9:55 AM CDT | Flash Flood Warning | LIX | East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana | 4 hr |
| Jun 28, 9:55 AM CDT | Flash Flood Warning | LIX | East Baton Rouge, Iberville | 4 hr |
| Jun 28, 10:00 AM CDT | Flash Flood Warning | LIX | Iberia, Saint Martin, St. Mary | 4 hr |
| Jun 28, 5:02 PM CDT | Tornado Warning | LIX | Avoyelles | 43 min |
Nearby
Flash Flood Warnings in Louisiana, 1989Every flash flood 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; the sounding from the Mesonet's radiosonde archive.