Alert archive / Louisiana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 2, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Feb 10, 1990, 5:57 AM CST for Saint Charles Parish, Louisiana. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Feb 10, 1990, 5:57 AM CST (11:57 UTC)
- Expired
- Feb 10, 1990, 6:45 AM CST
- In force
- 48 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Saint Charles 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, 12.0 hours before the alert went out and 74 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
- 1257 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KNEW 101201
SVRNEW
LAC007-051-071-089-101300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
557 AM CST SAT FEB 10 1990
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 AM CST
FOR PEOPLE IN THE FOLLOWING PARISHES...
IN SOUTHEAST LOUISIANA
...NORTHERN JEFFERSON...ORLEANS...ST.CHARLES
SLIDELL RADAR AT 555 AM CST INDICATED A SEVERE THUNDERSTORM ABOUT 20
MILES WESTSOUTHWEST OF MOISANT INTERNATIONAL AIRPORT MOVING EAST-
NORTHEAST ABOUT 55MPH.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.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, Feb 10, 12:52 AM CST, 5 hours 5 minutes before
LAZ006-008-009-100700- SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE BATON ROUGE LA 1250 AM CST SAT FEB 10 1990 ...TORNADO WATCH IN EFFECT UNTIL 6AM THIS MORNING FOR ASCENSION... ...AVOYELLES...CONCORDIA...EAST BATON ROUGE...EAST FELICIANA...IBERVILLE ...LIVINGSTON...POINTE COUPEE...ST. HELENA...ST. LANDRY...WEST BATON ROUGE AND WEST FELICIANA PARISH IN EAST CENTRAL LOUISIANA... AT 1245 AM RADAR SHOWED A LINE OF THUNDERSTORMS FROM MCCOMB MISSISSIPPI SOUTHWEST ACROSS BATON ROUGE AND GROSSE TETE TO NEW IBERIA. THE LINE WAS MOVING SOUTHEAST AT 20 MPH. THUNDERSTORMS WILL PRODUCE STRONG WIND GUSTS...SOME HAIL WITH STREET FLOODING POSSIBLE IN HEAVY RAIN AREAS. REMAFIN ALERT AND LISTEN TO NOAA RADIO FOR LATER STATEMENTS OR WARNINGS.
Special weather statement, Feb 10, 1:22 AM CST, 4 hours 35 minutes before
LAZ006-008-009-100800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 125 AM CST SAT FEB 10 1990 ...TORNADO WATCH HAS BEEN CANCELLED FOR AVOYELLES...CONCORDIA...POINTE COUPEE...ST. LANDRY AND WEST FELICINA PARISHES BUT REMAINS IN EFFECT FOR ...ASCENSION...EAST BATON ROUGE...EAST FELICIANA...IBERVILLE... LIVINGSTON...ST. HELENA AND WEST BATON ROUGE PARISHES IN EAST CENTRAL LOUISIANA UNTIL 6 AM THIS MORNING... AT 115 AM RADAR SHOWED A LINE OF THUNDERSTORMS FROM MCCOMB MISSISSIPPI SOUTHWEST ACROSS BATON ROUGE AND DENHAM SPRINGS TO VERMILION BAY. THE LINE WAS MOVING SOUTHEAST AT 20 MPH. THUNDERSTORMS WILL PRODUCE GUSTY WIND...HEAVY RAINS WITH FLOODING OF STREETS AND LOWh LYING AREAS AND POSSIBLY SOME HAIL. OVER AN INCH OF RAIN AND WIND GUSTS TO 25 MPH WERE RECORDED AT BATON ROUGE METRO AIRPORT DURING THE PAST HOUR.
Special weather statement, Feb 10, 1:29 AM CST, 4 hours 28 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-032300- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 129 AM CST SAT FEB 10 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 600 AM CST FOR ALL PARISHES IN SOUTHEAST LOUISIANA... A NEARLY SOLID LINE OF THUNDERSTORMS PRODUCING HEAVY RAIN EXTENDED FROM VERMILION BAY LOUISIANA NORTHEAST OVER BATON ROUGE AND ON NORTHEAST BETWEEN MCCOMB MISSISSIPPI AND BOGALUSA LOUISIANA. THE LINE OF THRUNDERSTORMS CONTINUED ON NORTHEAST OVER SOUTHEAST MISSISSIPPI OVER HATTIESBURG AND LAUREL TO JUST EAST OF MERIDIAN. THE LINE OF THUNDERSTORMS WAS MOVING INTO WASHINGTON PARISH AND THE NORTH PART OF TANGIPAHOA PARISH IN SOUTHEAST LOUISIANA. T~HE STRONGER THUNDERSTORMS IN THE LINE WILL PRODUCE STRONG WIND GUST...BRIEF HEAVY RAIN AND POSSIBLY SMALL HAIL IN THESE PARISHES. THE LINE WAS MOVING SOUTHEAST AT 30 MILES AN HOUR.
Special weather statement, Feb 10, 2:30 AM CST, 3 hours 27 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-032300- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 230 AM CST SAT FEB 10 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 600 AM CST FOR ALL PARISHES IN SOUTHEAST LOUISIANA... A NEARLY SOLID LINE OF THUNDERSTORMS PRODUCING HEAVY RAIN EXTENDED FROM VERMILION BAY LOUISIANA NORTHEAST BETWEEN MORGAN CITY AND BATON ROUGE AND ON NORTHEAST OVER HAMMOND AND BOGALUSA AND OVER SOUTHEAST MISSISSIPPI SOUTH OF HATTIESBURG AND INTO SOUTHWEST ALABAMA. THE HEAVIEST THUNDERSTORMS IN THE LINE EXTENDED FROM JUST NORTH OF HAMMOND TO BOGALUSA IN SOUTHEAST LOUISIANA. THESE THUNDERSTORMS WILL PRODUCE STRONG WIND GUST...BRIEF HEAVY RAIN AND POSSIBLY SMALL HAIL. THE LINE WAS MOVING SOUTHEAST AT 30 MILES AN HOUR.
Special weather statement, Feb 10, 2:35 AM CST, 3 hours 22 minutes before
LAZ009-100930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 235 AM CST SAT FEB 10 1990 ...TORNADO WATCH HAS BEEN CANCELLED FOR EAST BATON ROUGE...EAST FELICIANA...ST. HELENA AND WEST BATON ROUGE PARISHES BUT REMAINS IN EFFECT FOR ASCENSION...IBERVILLE AND LIVINGSTON PARISHES OF EAST CENTRAL LOUISIANA UNTIL 6 AM THIS MORNING... AT 230 AM RADAR SHOWED THUNDERSTORMS WITH HEAVY RAIN FROM AMITE SOUTHWEST ACROSS LIVINGSTON AND ASCENSION PARISHES TO WHITE CASTLE. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 20 MPH. THUNDERSTORMS WILL PRODUCE GUSTY WIND...HEAVY RAINS WITH FLOODING OF STREETS AND LOW LYING AREAS AND POSSIBLY SOME HAIL.
Special weather statement, Feb 10, 3:50 AM CST, 2 hours 7 minutes before
LAZ009-101100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 350 AM CST SAT FEB 10 1990 ...TORNADO WATCH HAS BEEN CANCELLED FOR IBERVILLE AND ASCENSION PARISHES BUT REMAINS IN EFFECT FOR SOUTHERN LIVINGSTON PARISH OF EAST CENTRAL LOUISIANA UNTIL 5 AM THIS MORNING... AT 345 AM RADAR SHOWED THUNDERSTORMS WITH HEAVY RAIN FROM WHITEHALL TO KILLIAN IN SOUTHERN LIVINGSTON PARISH. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR AND WILL MOVE OUT OF LIVINGSTON PARISH WITHIN THE HOUR. THUNDERSTORMS WILL PRODUCE GUSTY WINDS...HEAVY RAINS WITH FLOODING OF STREETS AND LOW LYING AREAS AND POSSIBLY SOME HAIL.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 5:57 AM CST | Severe Thunderstorm Warning | LIX | Jefferson, Orleans | 48 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1990Every severe thunderstorm warning in 1990
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.