Isolated severe thunderstorms developed in the vicinity of a nearly stationary frontal boundary as a strong upper level disturbance moved across the lower Mississippi Valley.
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.
Isolated severe thunderstorms developed in the vicinity of a nearly stationary frontal boundary as a strong upper level disturbance moved across the lower Mississippi Valley.
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 Feb 13, 3:49 PM CST, 11 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 349 PM CST FRI FEB 13 2009 .SHORT TERM... TRYING TO HOLD ON TO OPTIMISM FOR THIS EVENING AS SCATTERED LOW TOPPED SURFACE BASED CONVECTION CURRENTLY OVER THE AREA APPEARS TO BE HEAT DRIVEN AND SHOULD DIMINISH IN COVERAGE SHORTLY AFTER SUNSET. WILL ONLY INDICATE 40 PERCENT SHOWERS PRIOR TO 06Z THEN INCREASE TO 70-80 PERCENT COVERAGE AFTER MIDNIGHT. PARADES MAY NOT BE TOTALLY RAIN-FREE BUT LIMITED TO FAST MOVING NUISANCE SHOWERS OFF AND ON. 135KT JET MAX MOVING ACROSS NORTH MEXICO TO ARRIVE LATE THIS EVENING TO BRING RENEWED SYNOPTIC SCALE LIFT FOR THUNDERSTORM DEVELOPMENT MAINLY AFTER PARADES DISBAND. SATURDAY STILL SEEMS DICEY WITH JET ENERGY FIRMLY PLANTED OVER AREA AND SLOW MOVING SURFACE FRONT CRAWLS THROUGH AREA. WILL INDICATE 70 PERCENT AREA-WIDE FOR SATURDAY WHICH MAY INCLUDE STRONG THUNDERSTORMS DURING MAXIMUM HEATING IN ADVANCE OF THE FRONTAL BOUNDARY. TOUGH CALL FOR SATURDAY PARADE SCHEDULE WITH SOME ALTERATIONS POSSIBLE. BEST TO RE-EVALUATE SITUATION EARLY SATURDAY MORNING. STILL SOME UNCERTAINTY ON INTEGRITY OF CONVECTION SATURDAY AS STATED IN PREVIOUS AFD THERMODYNAMIC DISCUSSIONS. FRONT ONLY GETS SO FAR THEN STALLS ALONG THE COAST BEFORE RETREATING SOMEWHAT SATURDAY NIGHT...PLACING THE REGION IN SMALL WARM SECTOR BEFORE BEING FLUSHED OUT DURING THE MORNING SUNDAY. IT WOULD APPEAR SUNDAY PARADES SHOULD BE ESSENTIALLY WEATHER-FREE. 24/RR .LONG TERM... HIGH PRESSURE BUILDS INTO THE AREA SUNDAY WITH A SHORT DRY PERIOD SUNDAY AFTERNOON THROUGH MONDAY NIGHT. WARM FRONTOGENESIS MONDAY NIGHT IN THE CENTRAL GULF OF MEXICO MOVES NORTH TUESDAY AND BRING THE THIRD IN THE SERIES OF ISENTROPIC LIFT EVENTS. RAIN SPREADS OVER THE AREA TUESDAY AND TUESDAY NIGHT BEFORE COLD FRONT SWEEPS THROUGH THE REGION WEDNESDAY. COOLER AND DRIER HIGH PRESSURE BUILDS INTO THE AREA FOR LATTER PART OF THE WEEK. 24/RR && .AVIATION... PERSISTENT SHOWERS AND A FEW THUNDERSTORMS CONTINUE TO DEVELOP AND TRACK NORTHEASTWARD ACROSS THE AREA. THERE WILL BE BREAKS BETWEEN PERIODS OF HEAVIER RAIN THROUGH THE REMAINDER OF THE AFTERNOON AND INTO THE EVENING HOURS. THIS ACTIVITY IS EXPECTED TO BECOME MORE SPARSE THROUGH THE NIGHT. NO IMPROVEMENT IN CIGS OR VIS IS EXPECTED THROUGH TOMORROW MORNING. CURRENT MVFR WILL BECOME MOSTLY IFR TO LIFR OVERNIGHT AS CIGS CONTINUE TO LOWER. VLIFR IS DEFINITELY NOT OUT OF THE QUESTION. WINDS ARE WIDELY VARYING AS DETERMINED BY LOCATION OF A WARM FRONT OVER THE AREA. BTR AND MSY ARE WELL SOUTH OF THE FRONT...SO WINDS ARE S/SW. MCB AND GPT ARE RIGHT ALONG THE BOUNDARY...SO WINDS ARE GENERALLY EAST. EVENTUALLY...SHOULD ALL BECOME SOUTHWEST BY MORNING AND THEN NW DURING THE DAY AS A COLD FRONT APPROACHES THE AREA. RAIN CHANCES WILL CONTINUE THROUGH THE REST OF THE PERIOD. MEFFER && .MARINE... WINDS HAVE BECOME GENERALLY SOUTH ACROSS THE COASTAL WATERS. A GRADUAL WEAKENING AND SHIFT TO THE SOUTHWEST IS EXPECTED OVERNIGHT AS SURFACE HIGH PRESSURE SHIFTS EASTWARD AND A COLD FRONT APPROACHES THE AREA. THIS BOUNDARY IS EXPECTED TO STALL ONCE IT REACHES THE COASTLINE. WITH THIS FRONT STALLED OVER THE COASTAL WATERS...WINDS WILL BE RELATIVELY LIGHT. SHOWERS A FEW THUNDERSTORMS WILL BE POSSIBLE FROM NOW THROUGH SUNDAY. ONCE THE FRONT PUSHES THROUGH SUNDAY AFTERNOON/EVENING...NORTH WINDS WILL BEGIN INCREASING. SPEEDS WILL APPROACH SMALL CRAFT CRITERIA SUNDAY NIGHT. SO WILL NEED TO CONTINUE TO MONITOR FOR POSSIBLE ISSUANCE OF PRODUCT. SURFACE RIDGE WILL BUILD IN BEHIND THE FRONT ON MONDAY AND QUICKLY SHIFT EASTWARD TOWARDS THE ATLANTIC COAST AS SFC LOW TRACKS ACROSS THE CENTRAL PLAINS. MEFFER && .PRELIMINARY POINT TEMPS/POPS... MCB 58 68 50 65 / 80 60 80 30 BTR 62 73 55 66 / 70 70 80 30 MSY 62 73 59 66 / 70 70 80 40 GPT 62 72 57 66 / 70 80 80 40 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 24/35
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 651 PM CST FRI FEB 13 2009 GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-141200- LAKE PONTCHARTRAIN AND LAKE MAUREPAS- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA- EAST FELICIANA-ST. HELENA-TANGIPAHOA-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-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER- HANCOCK-HARRISON-JACKSON- 651 PM CST FRI FEB 13 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF COASTAL WATERS OF SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI...SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. .DAY ONE...TONIGHT WIDESPREAD SHOWERS AND A FEW THUNDERSTORMS CAN BE EXPECTED OVERNIGHT. WHILE SOME OF THE THUNDERSTORMS WILL PRODUCE OCCASIONAL LIGHTNING AND HEAVY DOWNPOURS OF RAIN... ORGANIZED SEVERE THUNDERSTORM DEVELOPMENT IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY LATEST MODEL TRENDS SUGGEST ISOLATED STRONG THUNDERSTORMS MAY BE POSSIBLE SATURDAY IN ADVANCE OF A SLOW MOVING COLD FRONT. THE MAIN THREATS WILL LIKELY BE WIND GUSTS UP TO 50 MPH...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. THIS FRONT IS EXPECTED TO BECOME STATIONARY NEAR THE COAST BY SATURDAY NIGHT. ISOLATED NON SEVERE THUNDERSTORMS ARE POSSIBLE SATURDAY NIGHT AND EARLY SUNDAY ALONG A WARM FRONT. THUNDERSTORMS ARE ALSO POSSIBLE AGAIN TUESDAY AND TUESDAY NIGHT BETWEEN A NORTH MOVING WARM FRONT TUESDAY AND AN EAST MOVING COLD FRONT EARLY WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
MSZ068-140730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 1230 AM CST SAT FEB 14 2009 ...STRONG THUNDERSTORM MOVING EAST AFFECTING WILKINSON COUNTY... AT 1224 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7 MILES NORTH OF SIMMESPORT...OR ABOUT 15 MILES WEST OF FORT ADAMS...MOVING EAST AT 40 MPH. THE STRONG THUNDERSTORM WILL BE NEAR... FORT ADAMS BY 1245 AM... WOODVILLE BY 110 AM... THE PRIMARY THREAT FROM THIS STORM IS PEA TO MARBLE SIZE HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED.
LAZ034-140930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 224 AM CST SAT FEB 14 2009 ...SEVERE THUNDERSTORM APPROACHING POINTE COUPEE PARISH... AT 222 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR PALMETTO...OR ABOUT 20 MILES WEST OF BATCHELOR...MOVING EAST AT 45 MPH. IF THIS THUNDERSTORM MAINTAINS THE CURRENT STRENGTH...A SEVERE THUNDERSTORM OR TORNADO WARNING MAY BE NECESSARY BEFORE 245 AM. THE STRONG TO SEVERE THUNDERSTORM WILL BE NEAR... 6 MILES SOUTH OF BATCHELOR BY 250 AM... MORGANZA BY 255 AM...
The national radar mosaic for the moment the first event began.
4 hail, 1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds removed the roof of an old house near Bayou Latenache in the Batchelor area. Also, trees were knocked down and a shed and barn were damaged.
Golfball size hail was observed in the Bayou Latenache area near Batchelor.
Nickel to quarter size hail fell in Greensburg and also south of Darlington near Highways 10 and 37.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2009Every state in 2009This day in weather historyWarnings in Louisiana, February 2009
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: 155803, 155804, 155805, 155807, 155808.