Alert archive / Louisiana / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Mar 25, 1993, 6:05 PM CST for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 25 min.
The area
The counties it named.
The facts
- Issued
- Mar 25, 1993, 6:05 PM CST (00:05 UTC)
- Expired
- Mar 25, 1993, 6:30 PM CST
- In force
- 25 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 0.1 hours before the alert went out and 51 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
- 213 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 697 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KNEW 260005 SVRNEW LAC103-117-260030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 605 PM CST THU MAR 25 1993 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM CST FOR RESIDENTS IN THE FOLLOWING PARISHESS... IN SOUTHEAST LOUISIANA ...NORTHERN ST.TAMMANY PARISH...SOUTHERN WASHINGTON PARISH NATIONAL WEATHER SERVICE RADAR INDICATED A CLUSTER OF VERY HEAVY THUNDERSTORMS OVER THE PARISH LINE BETWEEN ST TAMMANY AND WASHINGTON PARISHES. THESE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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 25, 2:03 PM CST, 4 hours 2 minutes before
LAZ006-008-009-252100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 200 PM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF EAST CENTRAL LOUISIANA UNTIL 4 PM... RADAR SHOWED A CLUSTER OF THUNDERSTORMS OVER NORTHERN CATAHOULA PARISH EXTENDING WEST TO NATCHITOCHES. MOVEMENT WAS SOUTHEAST ABOUT 30 MPH. THESE THUNDERSTORMS WILL MOVE TO NORTHERN CONCORDIA PARISH WITHIN THE HALF HOUR. ELSEWHERE...A CLUSTER OF STRONG THUNDERSTORMS CONTINUED BETWEEN HAMMOND AND BOGALUSA LOUISIANA AND HATTIESBURG MISSISSIPPI...WITH SHOWERS DEVELOPING FROM THE BATON ROUGE METRO AREA WEST TO SIMMESPORT. A LARGE SOLID AREA OF RAIN AND A FEW THUNDERSTORMS CONTINUED ALONG THE COASTAL SECTIONS OF LOUISIANA FROM SOUTH OF ATCHAFALAYA TO GRAND ISLE. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE REVORABLE FOR THE RAPID DEVELOPMENT OF SEVERE THUNDERSTORMS... PRODUCING LARGE HAIL AND DAMAGING W8INDS. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Local storm report, Mar 25, 2:58 PM CST, 3 hours 7 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
300 PM CST THU MAR 25 1993
TIME CST PARISH EVENT/LOCATION
1245 PM TANGIPAHOA OVER 3/4 INCH HAIL
230 PM > ST. TAMMANY TREES AND POWER LINES DOWN ON LEES ROAD
AND BURELL ROAD VICINITY COVINGTON.Special weather statement, Mar 25, 2:58 PM CST, 3 hours 7 minutes before
LAZ006-008-009-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 300 PM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF EAST CENTRAL LOUISIANA UNTIL 4 PM... RADAR SHOWED SCATTERED THUNDERSTORMS CONTINUING TO DEVELOPE FROM BETWEEN FORT POLK AND ALEXANDRIA...EAST ACROSS THE BATON ROUGE METRO AREA TO BETWEEN SLIDELL AND BOGALUSA. PATCHES OF RAIN AND A FEW THUNDERSTORMS CONTINUED FROM NORTHEAST LOUISIANA ACROSS SOUTHWEST MISSISSIPPI...AND ALONG THE COASTAL SECTIONS OF LOUISIANA FROM SOUTH OF MARSH ISLAND TO GRAND ISLE. MOVEMENT WAS EAST ABOUT 30 MPH. < REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE RAPID DEVELOPMENT OF SEVERE THUNDERSTORMS... PRODUCING LARGE HAIL AND DAMAGING WINDS. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Mar 25, 3:36 PM CST, 2 hours 29 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-252200- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 336 PM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM CST TONIGHT FOR ALL PARISHES IN SOUTHEAST LOUISIANA... AT 330 PM CST...RADAR INDICATED SHOWERS AND THUNDERSTORMS...A FEW WITH HEAVY AND VERY HEAVY RAINFALL...ACROSS PARTS OF EAST CENTRAL AND SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI. THE HEAVIEST RAINFALL WAS LOCATED ALONG THE MISSISSIPPI RIVER NEAR NATCHEZ...15 MILES NORTHWEST OF BATON ROUGE... AND JUST EAST OF SLIDELL LOUISIANA. OTHER SHOWERS AND THUNDERSTORMS WERE OVER THE LOUISIANA COASTAL WATERS FROM SOUTH OF VERMILION B^AY EAST TO EAST OF THE MOUTH OF THE MISSISSIPPI RIVER. THE ACTIVITY EXTENDED INTO THE OFFSHORE WATERS. MOVEMENT WAS EAST AT 35 MILES AN HOUR.
Local storm report, Mar 25, 4:05 PM CST, 2 hours before
STORM REPORT
NATIONAL WEATHER SERVICE BATON ROUGE LA
400 PM CST THU MAR 25 1993
TIME/CST LOCATION/PARISH REPORT
...THURSDAY...MARCH 25...
1148 AM WEST FELICIANA SHERIFFS OFFICE REPORTED QUARTER TO
GOLFBALL SIZE HAIL IN NORTHWEST PART OF
PARISH.
1206 PM EAST FELICIANA SHERIFFS OFFICE REPORTED QUARTER SIZE
HAIL.
326 PM CONCORDIA SHERIFFS OFFICE REPOTED THREE QUARTER
INCH HAIL AT FERRIDAY.Special weather statement, Mar 25, 5:09 PM CST, 56 minutes before
LAZ006-008-009-260030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 510 PM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF EAST CENTRAL LOUISIANA UNTIL 10 PM... RADAR SHOWED STRONG THUNDERSTORMS EXTENDING FROM EAST OF ALEXANDRIA INTO SOUTHWESTERN MISSISSIPPI TO NEAR HATTISBURG AND SOUTH TO NEAR BOGALUSA LOUISIANA. A FEW STRONG THUNDERSTORMS WERE BETWEEN LAFAYETTE ...LAKE CHARLES AND FORT POLK. OTHER SCATTERED SHOWERS WERE EAST OF BATON ROUGE EXTENDING TO NEAR BOGALUSA. THERE WAS ALSO A THUNDERSTORM NEAR NEW ORLEANS. MOVEMENT WAS EAST ABOUT 30 MPH. < REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE RAPI\D DEVELOPMENT OF SEVERE THUNDERSTORMS... PRODUCING LARGE HAIL AND DAMAGING WINDS. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS 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 |
|---|---|---|---|---|
| Mar 25, 6:38 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa | 67 min |
| Mar 25, 6:41 PM CST | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena | 49 min |
| Mar 25, 6:41 PM CST | Severe Thunderstorm Warning | LIX | Livingston | 49 min |
| Mar 25, 6:53 PM CST | Tornado Warning | LIX | Tangipahoa | 67 min |
| Mar 25, 7:10 PM CST | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston, Saint Helena | 65 min |
| Mar 25, 7:10 PM CST | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Baton Rouge | 65 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1993Every severe thunderstorm warning in 1993
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.