Strong to locally severe thunderstorms developed as a strong upper level disturbance moved along a cold front during the early morning hours Several reports of tornadoes were received in southeast Louisiana.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LIX wrote it up.
Strong to locally severe thunderstorms developed as a strong upper level disturbance moved along a cold front during the early morning hours Several reports of tornadoes were received in southeast Louisiana.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New Orleans, LA wrote its last area forecast discussion before the first event at Nov 15, 3:53 PM CST, 5 hours 22 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 353 PM CST TUE NOV 15 2011 ...SLIGHT RISK OF SEVERE STORMS TONIGHT... .SHORT TERM...THE MAIN CONCERN IN THE FORECAST IS THE RISK OF STRONG TO SEVERE STORMS TONIGHT. THINGS ARE PROGRESSING A LITTLE SLOWER AND THE MAIN TIME FRAME FOR THIS POTENTIAL LOOKS TO BE AROUND 2/3Z THROUGH 8Z. DISTURBANCE CURRENTLY IN SRN TX PULLING OFF TO THE NE AND IS ALREADY STARTING TO FILL IN AS IT MOVE INTO MORE CONFLUENT FLOW. THIS DISTURBANCE WILL CONTINUE TO MOVE TO THE NE INTO THE LOWER MS VALLEY THIS EVN AND THEN OVER NRN MS BY TOMORROW MORNING. AT THE SFC A WEAK WAVE ALONG THE WEAK OLD BNDRY LOCATED OVER THE SRN PLAINS INTO AR AND ATTACHED TO A COLD FRONT MOVING THROUGH THE APPALACHIANS AND NEW ENGLAND STATES. DECENT SRLY FLOW OVER THE REGION REMAINS IN PLACE AND THIS IS TRYING TO INCREASE THE MOISTURE OVER THE AREA. THERE IS A NICE SLUG OF THETA E AIR AT H85 MOVING TO THE NE OUT OF THE WRN GULF. THIS MAY ARRIVE BY AS EARLY AS 1Z AND GET HERE AROUND THE SAME TIME AS THE BETTER UPPER LVL SUPPORT MOVES IN. BY 6-8Z THE UPPER LVL SUPPORT WILL QUICKLY BEGIN TO PULL AWAY FROM THE REGION WITH THE L/W TROUGH FINALLY DEEPENING ON WED AND HELPING TO GIVE THE COLD FRONT A MUCH STRONGER PUSH SOUTH. AS FOR SVR...THERE ARE SOME INDICATIONS THAT WE COULD SEE A FEW STRONG TO SVR STORMS MAINLY IN OUR NWRN THIRD(MOSTLY ALONG AND NW OF A LINE FROM GONZALES TO TYLERTOWN). EVEN THOUGH THE DISTURBANCE WILL QUICKLY BE WEAKENING THERE WILL STILL BE SUFFICIENT FORCING TO WORK WITH. HGHTS ARE EXPECTED TO FALL ABOUT 3-5DM OVER THE NW AND H5 TEMPS WILL COOL FROM -9 TO -12C THIS EVN. AT THE SAME TIME H5 WINDS ARE EXPECTED TO BE AROUND 65 KTS. THERE WILL BE SOME SHEAR TO WORK WITH ACROSS THE NW. 0-3KM SRH WILL BE APPROACHING 200M2/S2 AND 0-6KM BULK SHEAR 50KTS. THAT SAID THE THERMODYNAMIC FIELD IS RATHER UNIMPRESSIVE. MLCAPE VALUES LOOK LIKE THEY COULD BE LESS THAN 600 J/KG AND SHOWALTERS REMAIN POSITIVE UNTIL LATE THIS EVN. MID LVL LAPSE RATES ARE NOT BAD INITIALLY AROUND 6.75 C/KM BUT THE LAPSE RATES QUICKLY RISE TO ONLY 5.5 C/KM BY 6Z TONIGHT. IN ADDITION TO THAT IT APPEARS THAT THE MANY FACTORS OF THIS SYSTEM ARE OUT OF PHASE. BEST INSTABILITY...ARRIVAL OF THE BETTER LL MOISTURE...AND BEST FORCING JUST DONT QUITE LINE UP AND THIS MAKES FOR A SOMEWHAT MESSY FORECAST. RIGHT NOW BEST GUESS IS EVEN WITH THE LACK OF IMPRESSIVE INSTABILITY THERE SHOULD BE ENOUGH MID LVL FLOW AND HGHTS FALLS TO KEEP WHAT CONVECTION IS OCCURRING IN WRN LA TO CONTINUE TO PUSH EAST INTO S-CNTRL LA AND SWRN MS. THE MAIN TIME FRAME FOR THESE STORMS WOULD BE AROUND 02-08Z. A FEW OF THESE STORMS COULD BE POTENT PROVIDING MAINLY A DAMAGING WIND AND LARGE HAIL THREAT BUT WITH DECENT SHEAR WE CANT RULE OUT AN ISOLATED TORNADO. TOMORROW THROUGH THU...THE COLD FRONT WILL PUSH THROUGH REGION LATE TOMORROW. THERE WILL BE SOME LGT RAIN POSSIBLE THROUGH THE DAY BUT THIS WILL BE VERY LGT. RAIN WILL CLR OUT LATE TOMORROW AFTN/EVN AND THE FRONT SHOULD BE PUSHING TWRDS THE COAST BY 00Z. LOOK FOR MUCH COOLER AND DRIER CONDITIONS ON THU. H925 TEMPS DROP DOWN TO AROUND 7-9C THU AND SHOULD TRANSLATE TO MID 60S. .LONG TERM...NO MAJOR CHANGES MADE TO THE EXTENDED. BOTH THE GFS AND ECMWF CONTINUE TO BE IN DECENT AGREEMENT WITH THE PATTERN QUICKLY BECOMING SWRLY THIS WEEKEND AND THE GULF OPENING BACK UP. PREV LONG TERM DISCUSSION ATTACHED. /CAB/ COLDEST MORNING APPEARS TO BE FRIDAY MORNING AS DRAINAGE AFFECTS OPTIMIZE WITH SURFACE HIGH CENTERED OVER CENTRAL APPALACHIANS AT THAT TIME. EASTERLY FLOW REGIME ONSETS EARLY SATURDAY FOR WARMING TREND WITH GULF REALLY OPENING UP LATE SATURDAY INTO SUNDAY FOR WARM DAYS ONCE AGAIN. NEXT FRONTAL SYSTEM APPEARS TO BE MIDDLE OF NEXT WEEK AS THE PATTERN APPEARS TO BE IN A 7 DAY CYCLES. 24/RR && .AVIATION...IN THE SHORT TERM...STEADY STREAM OF SCATTERED SHOWERS CONTINUE TO IMPACT ALL SITES EXCEPT BTR AND MCB. EXPECT BRIEF HEAVY DOWNPOURS THAT DROP VIS TO MVFR/IFR LEVELS. THIS ACTIVITY IS EXPECTED TO DWINDLE LATER THIS AFTERNOON AND THEN INCREASE AGAIN OVERNIGHT. COULD BE A FEW STRONG STORMS WITH THE ACTIVITY TONIGHT...BUT MAINLY FOR AREAS IN NWRN PORTIONS OF THE CWA SUCH AS BTR AND MCB. THOUGH NOT MENTIONED IN TAFS YET...LIGHT FOG MAY DEVELOP ACROSS MANY SITES EARLY TOMORROW MORNING AS MOIST AIR MASS REMAINS IN PLACE. THIS COULD KEEP VIS IN MVFR RANGE. CLOUD DECKS WILL LIKELY VARY FAIRLY OFTEN THRU THE PERIOD FROM IFR TO MVFR. CONDITIONS NOT TO IMPROVE SIGNIFICANTLY UNTIL LATER TOMORROW AS A COLD FRONT FINALLY SWEEPS THRU. MEFFER && .MARINE...A STRONG COLD FRONT WILL MOVE THROUGH THE COASTAL WATERS LATE WED NIGHT. AS COLDER AIR ADVECTS OVER THE WARMER WATERS...AND STRONG BOUNDARY LAYER NORTHERLY WINDS LINE UP WITH THE SFC WINDS THEY WILL EASILY BE TRANSPORTED DOWN TO THE SFC. THIS WILL LEAD TO SMALL CRAFT ADVISORY CONDITIONS DEVELOPING LATE WEDNESDAY NIGHT AND PERSISTING INTO THURSDAY NIGHT. CONDITIONS WILL IMPROVE BY FRIDAY...AS HIGH PRESSURE BECOMES CENTERED OVER THE REGION. ONSHORE FLOW WILL RETURN THIS WEEKEND AS THE GULF OPENS BACK UP. /CAB/ && .PRELIMINARY POINT TEMPS/POPS... MCB 66 79 43 62 / 80 50 10 0 BTR 68 83 47 65 / 70 40 0 0 ASD 68 84 49 67 / 50 40 10 0 MSY 68 83 53 66 / 50 30 0 0 GPT 68 83 51 67 / 50 40 10 0 PQL 66 84 51 66 / 50 40 20 0 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && SHORT/LONG/MARINE: CAB AVIATION: MEFFER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 530 PM CST TUE NOV 15 2011 GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037- 039-040-046>050-056>072-MSZ068>071-077-080>082-161800- LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND- LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM- COASTAL WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO 60 NM- COASTAL WATERS FROM STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA- WASHINGTON-ST. TAMMANY-IBERVILLE-WEST BATON ROUGE- EAST BATON ROUGE-ASCENSION-LIVINGSTON-ASSUMPTION-ST. JAMES- ST. JOHN THE BAPTIST-UPPER LAFOURCHE-ST. CHARLES-UPPER JEFFERSON- ORLEANS-UPPER PLAQUEMINES-UPPER ST. BERNARD-UPPER TERREBONNE- LOWER TERREBONNE-LOWER LAFOURCHE-LOWER JEFFERSON- LOWER PLAQUEMINES-LOWER ST. BERNARD-NORTHERN TANGIPAHOA- SOUTHERN TANGIPAHOA-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER- HANCOCK-HARRISON-JACKSON- 530 PM CST TUE NOV 15 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS SOUTHEAST LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS EVENING AND OVERNIGHT TONIGHT. THE AREAS OF GREATEST THREAT WILL BE EAST CENTRAL LOUISIANA AND SOUTHWEST MISSISSIPPI. THE PRIMARY THREATS WILL BE DAMAGING WIND GUSTS OF 50 TO 60 MPH... HAIL QUARTER SIZE OR LARGER...AND OCCASIONAL LIGHTNING. ISOLATED TORNADOES ARE ALSO POSSIBLE. THE SEVERE WEATHER THREAT WILL DIMINISH LATE TONIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A SMALL CRAFT ADVISORY WILL LIKELY BE NEEDED LATE WEDNESDAY NIGHT AND THURSDAY FOR THE COASTAL WATERS AND TIDAL LAKES AS COLD AIR MOVES INTO THE REGION IN THE WAKE OF THE COLD FRONT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED LATE THIS EVENING AND OVERNIGHT MAINLY FOR THE COUNTIES AND PARISHES WEST OF THE PEARL RIVER AND NORTH OF THE TIDAL LAKES.
LAZ034-046>048-160130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 634 PM CST TUE NOV 15 2011 ...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING WEST BATON ROUGE PARISH...POINTE COUPEE PARISH...EAST BATON ROUGE PARISH...IBERVILLE PARISH... AT 631 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 15 MILES NORTHEAST OF JEANERETTE...OR ABOUT 11 MILES SOUTHWEST OF BAYOU SORREL...MOVING NORTHEAST AT 35 MPH. THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...BAYOU SORREL...GROSSE TETE...ADDIS...BRUSLY...ERWINVILLE...PORT ALLEN...BATON ROUGE AIRPORT AND BAKER. THE PRIMARY THREAT FROM THIS STORM IS WIND GUSTS 35 TO 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST WEDNESDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
LAZ034-035-MSZ068-160215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 718 PM CST TUE NOV 15 2011 ...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING WILKINSON COUNTY... POINTE COUPEE PARISH...WEST FELICIANA PARISH... AT 714 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR MELVILLE...OR ABOUT 6 MILES NORTHWEST OF LOTTIE...MOVING NORTHEAST AT 30 MPH. THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...MORGANZA... BATCHELOR...WAKEFIELD...SPILLMAN...FORT ADAMS AND WOODVILLE THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND GUSTS 35 TO 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST WEDNESDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. 95/DM
LAZ036-037-048-050-MSZ069-160315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 816 PM CST TUE NOV 15 2011 ...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING AMITE COUNTY...ST. HELENA PARISH...EAST FELICIANA PARISH...EAST BATON ROUGE PARISH... LIVINGSTON PARISH... AT 814 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 8 MILES EAST OF BAKER...OR ABOUT 3 MILES NORTHWEST OF GREENWELL SPRINGS...MOVING NORTHEAST AT 35 MPH. THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...PRIDE... DARLINGTON...EASLEYVILLE AND GILLSBERG THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT TO CONTINUOUS LIGHTNING AND WIND GUSTS 35 TO 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST WEDNESDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. CONTINUOUS LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. 95/DM
LAZ036-047-048-160345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 906 PM CST TUE NOV 15 2011 ...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING WEST BATON ROUGE PARISH...EAST FELICIANA PARISH...EAST BATON ROUGE PARISH... AT 900 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR PORT ALLEN...OR ABOUT 4 MILES NORTHWEST OF BRUSLY...MOVING NORTHEAST AT 35 MPH. THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...BATON ROUGE...BATON ROUGE AIRPORT...BAKER...ZACHARY...GREENWELL SPRINGS... SLAUGHTER...PRIDE AND CLINTON THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND GUSTS 35 TO 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST WEDNESDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. 95/DM
The national radar mosaic for the moment the first event began.
2 thunderstorm wind, 2 tornado. Local standard time, as filed.
Several pine trees were blown down.
The tornado began about 5 miles northeast of Greensburg. Track length was approximately one half mile long with a path width of 150 yards. Estimated maximum winds were around 105 mph. Damage was reported to one residence, which was blown about 10 feet off its foundation. The home also had a collapse of one exterior wall. Scattered trees and power lines were also blown down.
Damage was confined to Lafayette Woods Boulevard and Piping Rock Drive. Large areas of shingles were removed off one home. An awning was thrown over a home. One boat was flipped. Multiple tree tops were snapped. A shed was blown out of a residential yard with debris sent into the Village East Elementary School grounds. Some debris was lifted 50 feet up into the trees. Three windows were blown out at the school. Track length was 100 yards and width was 25 yards. Damage rated at EF0.
Damage was reported in the Kingspoint Subdivision southeast of Slidell. Trees were snapped with one tree damaging the roof of a home. Several fences were also blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2011Every state in 2011This day in weather historyThe tornado archive for Louisiana, 2011Warnings in Louisiana, November 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 355334, 351316, 351320, 351323.