Alert archive / Louisiana / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 13, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Mar 25, 1993, 12:26 PM CST for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Mar 25, 1993, 12:26 PM CST (18:26 UTC)
- Expired
- Mar 25, 1993, 1:30 PM CST
- In force
- 64 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.4 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
- 1 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 628 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 103 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 KNEW 251826 SVRNEW LAC103-117-251930- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW ORLEANS LA 1226 PM CST THU MAR 25 1993 THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 130 PM CST FOR RESIDENTS IN THE FOLLOWING PARISHESS... IN SOUTHEAST LOUISIANA ...ST.TAMMANY PARISH...WASHINGTON PARISH AT 1230 PM CST SLIDELL RADAR INDICATED A LINE OF STRONG THUNDERSTORMS OVER NORTHERN TANGIPAHOA PARISH MOVING EAST SOUTHEAST ABOUT 40 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, 10:06 AM CST, 2 hours 20 minutes before
LAZ006-008-009-MSZ010-011-251800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 1005 AM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EAST CENTRAL LOUISIANA UNTIL 4 PM CST THIS AFTERNOON... RADAR SHOWED VERY STRONG THUNDERSTORMS NEAR ALEXANDRIA AND POLLOCK. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MPH AND WILL ENTER SOUTHERN CATAHOULA AND NORTHERN AVOYELLES PARISHES SHORTLY. ELSEWHERE RAIN AND A FEW THUNDERSTORMS CONTINUED MOVING ACROSS SOUTHERN MISSISSIPPI...WITH THUNDERSTORMS DEVELOPING ALONG THE COAST SOUTH OF LAFAYETTE. PEOPLE IN EAST CENTRAL LOUISIANA SHOULD BE ALERT TO POSSIBLE SEVERE THUNDERSTORMS DEVELOPING RAPIDLY AND MOVE TO A S*AFE PLACE IF NEEDED.
Special weather statement, Mar 25, 10:44 AM CST, 1 hour 42 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-251800- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 1043 AM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4 PM CST FOR ALL PARISHES IN SOUTHEAST LOUISIANA... AT 1030 AM CST...RADAR INDICATED AN ISOLATED STRONG THUNDERSTORM LOCATED JUST SOUTH OF COLUMBIA MISSISSIPPI MOVING SOUTHEAST AT ABOUT 35 MILES AN HOUR. THIS THUNDERSTORM WAS WITHIN AN AREA OF MOSTLY LIGHT RAIN OCCURRING IN SOUTH MISSISSIPPI FROM LAUREL TO TYLERTOWN EAST TO THE MISSISSIPPI/ALABAMA BORDER. A CLUSTER OF THUNDERSTORMS WAS LOCATED IN AND AROUND THE ALEXANDRIA LOUISIANA AREA. MOVEMENT WAS SOUTHEAST AT ABOUT 35 MILES AN HOUR. THESE THUNDERSTORMS WILL AFFECT EXTREME SOUTHWEST MISSISSIPPI AND THE SIMMESPORT LOUISIANA AREA WITHIN THE HOUR. AN AREA OF SHOWERS AND THUNDERSTORMS WAS OVER THE LOUISIANA COASTAL WATERS FROM 40 MILES SOUTHWEST OF VERMILION BAY EAST TO 50 MILES EAST OF THE MOUTH OF THE MISSISSIPPI RIVER. MOVEMENT WAS EAST AT 35 MILES AN HOUR.
Special weather statement, Mar 25, 10:58 AM CST, 1 hour 28 minutes before
LAZ006-008-009-251900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 1100 AM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EAST CENTRAL LOUISIANA UNTIL 4 PM CST THIS AFTERNOON... RADAR SHOWED VERY STRONG THUNDERSTORMS MOVING THROUGH SOUTHERN CONCORDIA AND NORTHERN AVOYELLES PARISHES FROM MARKSVILLE TO ACME. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MPH. EARLIER HAIL TO MARBLE SIZE WAS REPORTED WITH THESE THUNDERSTORMS. ELSEWHERE THUNDERSTORMS CONTINUED ALONG THE COAST SOUTH OF LAFAYETTE TO NEAR THE MOUTH OF THE MISSISSIPPI RIVER. PEOPLE IN EAST CENTRAL LOUISIANA SHOULD BE ALERT TO POSSIBLE SEVERE THUNDERSTORMS DEVELOPING RAPIDLY AND MOVE TO A SAFE PLACE IF NEEDED.
Special weather statement, Mar 25, 11:40 AM CST, 46 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-251900- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 1139 AM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4 PM CST FOR ALL PARISHES IN SOUTHEAST LOUISIANA... AT 1125 AM CST...RADAR INDICATED A CLUSTER OF THUNDERSTORMS IN EXTREME SOUTHWEST MISSISSIPPI NEAR NATCHEZ AND EXTENDED SOUTH TO BETWEEN SIMMESPORT AND 20 MILES NORTHWEST OF BATON ROUGE LOUISIANA. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR AND THE BATON ROUGE AREA WILL BE AFFECTED WITHIN ABOUT 30 TO 45 MILES AN HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE OVE EXTREME SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA BETWEEN HATTIESBURG AND GULFPORT MISSISSIPPI AND MOBILE ALABAMA. THESE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST ABOUT 35 MILES AN HOUR. AN AREA OF SHOWERS AND THUNDERSTORMS WAS OVER THE LOUISIANA COASTAL WATERS FROM SOUTHWEST OF VERMILION BAY EAST TO THE MOUTVH OF THE MISSISSIPPI RIVER. MOVEMENT WAS EAST AT 35 MILES AN HOUR.
Special weather statement, Mar 25, 11:43 AM CST, 43 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-251900- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY ...CORRECTED FOR WORDING... NATIONAL WEATHER SERVICE NEW ORLEANS LA 1139 AM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4 PM CST FOR ALL PARISHES IN SOUTHEAST LOUISIANA... AT 1125 AM CST...RADAR INDICATED A CLUSTER OF THUNDERSTORMS IN EXTREME SOUTHWEST MISSISSIPPI NEAR NATCHEZ AND EXTENDED SOUTH TO BETWEEN SIMMESPORT AND 20 MILES NORTHWEST OF BATON ROUGE LOUISIANA. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR AND THE BATON ROUGE AREA WILL BE AFFECTED WITHIN ABOUT 30 TO 45 MINUTES. OTHER SHOWERS AND THUNDERSTORMS WERE OVER EXTREME SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA BETWEEN HATTIESBURG AND GULFPORT MISSISSIPPI AND MOBILE ALABAMA. THESE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST ABOUT 35 MILES AN HOUR. AN AREA OF SHOWERS AND THUNDERSTORMS WAS OVER THE LOUISIANA COASTAL WATERS FROM SOUTHWEST OF VEPRMILION BAY EAST TO THE MOUTH OF THE MISSISSIPPI RIVER. MOVEMENT WAS EAST AT 35 MILES AN HOUR.
Special weather statement, Mar 25, 11:53 AM CST, 33 minutes before
LAZ006-008-009-MSZ010-011-251900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 1150 AM CST THU MAR 25 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EAST CENTRAL LOUISIANA AND SOUTHWEST MISSISSIPPI UNTIL 4 PN CST THIS AFTERNOON... RADAR SHOWED VERY STRONG THUNDERSTORMS CONTINUED MOVING ALONG THE LOUISIANA MISSISSIPPI BORDER FROM CLINTON TO NEAR LIBERTY MISSISSIPPI. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MPH. THESE THUNDERSTORMS HAVE PRODUCED HAIL TO MARBLE SIZE AS THEY MOVE ALONG. ELSEWHERE RAIN AND THUNDERSTORMS CONTINUED ALONG THE COAST SOUTH OF LAFAYETTE TO HOUMA. PEOPLE IN EAST CENTRAL LOUISIANA SHOULD BE ALERT TO POSSIBLE SEVERE THUNDERSTORMS DElVELOPING RAPIDLY AND MOVE TO A SAFE PLACE IF NEEDED.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 11:58 AM CST | Severe Thunderstorm Warning | LIX | Saint Helena | 62 min |
| Mar 25, 11:58 AM CST | Severe Thunderstorm Warning | LIX | East Feliciana | 37 min |
| Mar 25, 12:08 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa | 52 min |
| Mar 25, 1:40 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 65 min |
| Mar 25, 2:44 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 31 min |
| Mar 25, 3:06 PM CST | Severe Thunderstorm Warning | LIX | Concordia | 39 min |
| Mar 25, 4:04 PM CST | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston, Saint Helena | 56 min |
| Mar 25, 4:31 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa | 59 min |
| Mar 25, 5:08 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 37 min |
| Mar 25, 5:44 PM CST | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena | 61 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.