1 lightning, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 Aug 12, 2:47 AM CST, 9 hours 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 347 AM CDT FRI AUG 12 2005 .DISCUSSION... VERY NICE NOCTURNAL CROP OF TS DEVELOPING THIS MORNING OVER THE COASTAL SECTIONS OF THE NORTH CENTRAL GULF. TWO UPPER LOWS ARE PROVIDING A SLIGHTLY MORE VOLATILE ATMOSPHERE. THE FIRST WEAKER ONE IS OVER NE TX WITH ANOTHER STRONGER ONE NEAR PENSACOLA. THE INTERACTION OF THESE TWO SYSTEMS IS CAUSING A STRONG UPPER MESO- RIDGE TO FORM OVER CENTRAL AND EASTERN LA. WITH UPPER RIDGING CENTERS...UPPER LEVEL WINDS ARE LIGHT AND MOVE AWAY FROM THE CENTER CAUSING WEAK LIFT TO OCCUR IN LAYERS BELOW. UPPER RIDGING IS QUITE CONDUCIVE FOR TS DEVELOPMENT IN THE TROPICS. THE SINKING PORITON OF THE UPPER LOW OCCURS MAINLY IN THE CENTER WITH LIFT TOWARD THE OUTER PERIFERY OF THE UPPER LOW. THE INTERACTION OF THE UPPER MESO HIGH AND THE UPPER LOW MAY BE CAUSING THE ABOVE AVERAGE NUMBER OF TS OVER THE AREA THIS MORNING. THIS SCENARIO SHOULD PLAY OUT FOR MUCH OF THE MORNING AND HAVE MADE POPS 40% AREA WIDE. THEN RAIN CHANCES REDUCE AS THE UPPER LOWS MOVE NORTH. CLOUD COVER SHOULD KEEP TEMPS DOWN TO CLOSER TO AVERAGE HIGHS TODAY AND HAVE DECIDED TO UNDERCUT TH GFS MOS GUIDANCE. NO OTHER VARIABLES WERE CHANGED AND THE REMAINDER OF THE PACKAGE LOOKS GOOD. STORM MOTION WILL BE LITTLE IF ANY TODAY SO THERE MAY BE AN ISOLATED SPOT OR TWO RECIEVING QUITE A BIT OF RAIN DURING A RELATIVELY SHORT TIME. MARG THANKS FOR COORD. && .PRELIMINARY POINT TEMPS/POPS... MCB 93 73 94 74 / 40 10 30 10 BTR 93 75 95 75 / 40 10 30 10 MSY 92 78 94 77 / 40 20 30 20 GPT 91 75 92 75 / 40 20 30 20 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 17
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1113 AM CDT FRI AUG 12 2005 LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-122230- AMITE-ASCENSION-ASSUMPTION-EAST BATON ROUGE-EAST FELICIANA-HANCOCK- HARRISON-IBERVILLE-JACKSON-LIVINGSTON-LOWER JEFFERSON- LOWER LAFOURCHE-LOWER PLAQUEMINES-LOWER ST BERNARD-LOWER TERREBONNE- ORLEANS-PEARL RIVER-PIKE-POINTE COUPEE-ST CHARLES-ST HELENA-ST JAMES- ST JOHN THE BAPTIST-ST TAMMANY-TANGIPAHOA-UPPER JEFFERSON- UPPER LAFOURCHE-UPPER PLAQUEMINES-UPPER ST BERNARD-UPPER TERREBONNE- WALTHALL-WASHINGTON-WEST BATON ROUGE-WEST FELICIANA-WILKINSON- 1113 AM CDT FRI AUG 12 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND SOUTHEAST LOUISIANA AND EXTREME SOUTHWEST...SOUTH CENTRAL AND COASTAL MISSISSIPPI. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND LAST INTO THIS EVENING ACROSS SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI. THE THUNDERSTORM ACTIVITY WILL BEGIN TO DISSIPATE AROUND SUNSET...WITH NO THUNDERSTORM ACTIVITY EXPECTED BY MIDNIGHT. IN GENERAL...THE THUNDERSTORMS WILL BE RATHER BENIGN THIS AFTERNOON...TYPICAL OF MOST THUNDERSTORMS THIS TIME OF YEAR. HOWEVER...A FEW LOCALLY STRONG THUNDERSTORMS ARE POSSIBLE. DUE TO SOME ENHANCED LIFT FROM A LOW PRESSURE SYSTEM IN SOUTHWEST ALABAMA...COMBINED WITH AMPLE HEAT AND MOISTURE...THE MOST LIKELY REGION FOR STRONGER THUNDERSTORMS TO DEVELOP WILL BE ACROSS THE NEW ORLEANS AND COASTAL MISSISSIPPI AREAS. THE MAIN THREAT FROM ANY STRONG THUNDERSTORM DEVELOPMENT WILL BE WINDS GUSTING TO 45 MPH...FREQUENT AND DANGEROUS CLOUD TO GROUND LIGHTNING...AND HEAVY RAINFALL. THE THUNDERSTORMS WILL BE SLOW MOVING...SO SOME LOCALIZED STREET FLOODING IS POSSIBLE FROM THE HEAVIER DOWNPOURS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE EACH DAY...MAINLY IN THE AFTERNOON AND EVENING HOURS. MOST OF THE THUNDERSTORM ACTIVITY WILL REMAIN WEAK...BUT A FEW LOCALLY STRONGER THUNDERSTORMS ARE POSSIBLE. HOWEVER...NO ORGANIZED SEVERE WEATHER IS EXPECTED THROUGH THE PERIOD. .SPOTTER INFORMATION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER OPERATIONS...IS NOT REQUESTED AT THIS TIME. 32
The national radar mosaic for the moment the first event began.
1 lightning. Local standard time, as filed.
A lightning strike caused a fire that severely damaged a house.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2005Every state in 2005This day in weather historyWarnings in Louisiana, August 2005
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: 5475548.