Alert archive / Louisiana / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 50, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 20, 1992, 7:32 AM CDT for Saint Tammany Parish, Louisiana. It was in force for 73 min.
The area
The counties it named.
The facts
- Issued
- Apr 20, 1992, 7:32 AM CDT (12:32 UTC)
- Expired
- Apr 20, 1992, 8:45 AM CDT
- In force
- 73 min
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
County Saint Tammany Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 0.5 hours before the alert went out and 30 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
- 1940 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 14.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Apr 20, 4:37 AM CDT, 2 hours 55 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-201100- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 436 AM CDT MON APR 20 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 7 AM CDT FOR THE FOLLOWING PARISHES IN SOUTHEAST LOUISIANA...ASSUMPTION...IBERIA...LOWER ST MARTIN...UPPER ST MARTIN...LAFOURCHE...ST MARY...ST JAMES...AND TANGIPAHOA... AT 430 AM...WEATHER RADAR INDICATED NUMEROUS THUNDERSTORMS ACROSS PARTS OF SOUTH CENTRAL AND SOUTHEAST LOUISIANA. THE THUNDERSTORMS WITH THE HEAVIER RAINFALL WERE LOCATED FROM JUST NORTH OF OPELOUSAS TO JUST NORTHWEST OF BATON ROUGE TO NEAR AMITE. THESE THUNDERSTORMS WILL LIKELY PRODUCE VERY HEAVY RAINFALL...DANGEROUS LIGHTNING...STRONG GUSTY WINDS...AND LARGE HAIL. RESIDENTS IN THE PATH OF THESE DANGEROUS THUNDERSTORMS SHOULD BE ALERT AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED.
Special weather statement, Apr 20, 5:35 AM CDT, 1 hour 57 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-201200- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 534 AM CDT MON APR 20 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 7 AM CDT FOR THE FOLLOWING PARISHES IN SOUTHEAST LOUISIANA...ASSUMPTION...IBERIA...LOWER ST MARTIN...UPPER ST MARTIN...LAFOURCHE...ST MARY...ST JAMES...AND TANGIPAHOA... AT 530 AM...WEATHER RADAR INDICATED SEVERAL STRONG THUNDERSTORMS ACROSS SOUTH CENTRAL LOUISIANA EXTENDING INTO THE SOUTHWEST CORNER OF MISSISSIPPI. THE THUNDERSTORMS WITH THE HEAVIER RAINFALL WERE LOCATED IN AN AREA FROM SIMMESPORT LOUISIANA TO NATCHEZ MISSISSIPPI TO MCCOMB MISSISSIPPI. THE THUNDERSTORMS WERE MOVING NORTHEAST AT ABOUT 30 MILES AN HOUR.
Special weather statement, Apr 20, 5:37 AM CDT, 1 hour 55 minutes before
LAZ006-008-009-200900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 535 AM CDT MON APR 20 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 7 AM CDT FOR ALL OF EAST CENTRAL LOUISIANA... RADAR AT 535 AM SHOWED STRONG THUNDERSTORMS EXTENDING FROM CROWLEY TO OPELOUSAS...SIMMESPORT AND LIBERTY MISSISSIPPI. THIS WAS PART OF A LARGE AREA OF THUNDERSTORMS COVERING MUCH OF EAST CENTRAL LOUISIANA AND SOUTHWESTERN MISSISSIPPI. MOVEMENT WAS NORTHEAST AT 30 MILES PER HOUR. PEOPLE THROUGHOUT EAST CENTRAL LOUISIANA SHOULD BE ALERT TO POSSIBLE SEVERE WEATHER AND BE READY TO MOVE QUICKLY TO A SAFE PLACE IF NEEDED. HEAVY RAIN WITH STREET FLOODING LIKELY AS THUNDERSTORMS MOVE THROUGH DURING THE EARLY HOURS THIS MORNING...WITH GUSTY WINDS AND HAIL.
Special weather statement, Apr 20, 5:38 AM CDT, 1 hour 54 minutes before
LAZ006-008-009-201200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 535 AM CDT MON APR 20 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 7 AM CDT FOR ALL OF EAST CENTRAL LOUISIANA... RADAR AT 535 AM SHOWED STRONG THUNDERSTORMS EXTENDING FROM CROWLEY TO OPELOUSAS...SIMMESPORT AND LIBERTY MISSISSIPPI. THIS WAS PART OF A LARGE AREA OF THUNDERSTORMS COVERING MUCH OF EAST CENTRAL LOUISIANA AND SOUTHWESTERN MISSISSIPPI. MOVEMENT WAS NORTHEAST AT 30 MILES PER HOUR. PEOPLE THROUGHOUT EAST CENTRAL LOUISIANA SHOULD BE ALERT TO POSSIBLE SEVERE WEATHER AND BE READY TO MOVE QUICKLY TO A SAFE PLACE IF NEEDED. HEAVY RAIN WITH STREET FLOODING LIKELY AS THUNDERSTORMS MOVE THROUGH DURING THE EARLY HOURS THIS MORNING...WITH GUSTY WINDS AND HAIL.
Special weather statement, Apr 20, 6:34 AM CDT, 58 minutes before
LAZ006-008-009-201300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BATON ROUGE LA 635 AM CDT MON APR 20 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 1 PM FOR ALL OF EAST CENTRAL LOUISIANA... RADAR AT 635 AM SHOWED STRONG THUNDERSTORMS EXTENDING FROM ABBEVILLE TO LAFAYETTE...ST FRANCISVILLE AND WOODHAVEN MISSISSIPPI. OTHER SCATTERED THUNDERSTORMS FROM BATON ROUGE SOUTH TO DONALDSONVILLE... HOUMA AND TERREBONNE BAY. MOVEMENT WAS NORTHEAST AT 30 MILES PER HOUR. PEOPLE THROUGHOUT EAST CENTRAL LOUISIANA SHOULD BE ALERT TO POSSIBLE SEVERE WEATHER AND BE READY TO MOVE QUICKLY TO A SAFE PLACE IF NEEDED. HEAVY RAIN WITH STREET FLOODING LIKELY AS THUNDERSTORMS MOVE THROUGH THIS MORNING..W.WITH GUSTY WINDS AND HAIL.
Special weather statement, Apr 20, 6:36 AM CDT, 56 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-201300- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 635 AM CDT MON APR 20 1992 ...A TORNADO WATCH IS IN EFFECT UNTIL 7 AM CDT FOR THE FOLLOWING PARISHES IN SOUTHEAST LOUISIANA...ASSUMPTION...IBERIA...LOWER ST MARTIN...UPPER ST MARTIN...LAFOURCHE...ST MARY...ST JAMES...AND TANGIPAHOA... ...AT 7 AM CDT THE TORNADO WATCH WILL BE EXTENDED EAST TO INCLUDE ALL OF THE PARISHES IN SOUTHEAST LOUISIANA UNTIL 1 PM CDT THIS AFTERNOON... AT 630 AM...WEATHER RADAR INDICATED SEVERAL STRONG THUNDERSTORMS ACROSS SOUTH CENTRAL AND SOUTHEAST LOUISIANA EXTENDING INTO SOUTHWEST MISSISSIPPI. THE THUNDERSTORMS WITH THE HEAVIER RAINFALL WERE LOCATED OVER THIBODAUX... JUST SOUTH OF BATON ROUGE...AND IN THE SOUTHWEST CORNER OF MISSISSIPPI BETWEEN SIMMESPORT LOUISIANA AND MCCOMB MISSISSIPPI. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 3:03 AM CDT | Severe Thunderstorm Warning | LIX | Saint Martin | 57 min |
| Apr 20, 3:36 AM CDT | Severe Thunderstorm Warning | LIX | Saint Landry | 69 min |
| Apr 20, 4:15 AM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee | 45 min |
| Apr 20, 4:31 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, West Feliciana | 59 min |
| Apr 20, 7:10 AM CDT | Severe Thunderstorm Warning | LIX | Lafourche | 65 min |
| Apr 20, 7:52 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, West Feliciana | 38 min |
| Apr 20, 8:19 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 41 min |
| Apr 20, 10:08 AM CDT | Severe Thunderstorm Warning | LIX | Tangipahoa | 67 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1992Every severe thunderstorm warning in 1992
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.