1 thunderstorm wind, as filed by the National Weather Service.
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 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, 1:40 PM CST, 1 hour 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 240 PM CDT FRI AUG 12 2005 .DISCUSSION... MOISTURE GRADIENT AND CONVERGENCE IN THE WAKE OF A SURFACE BASED LOW PRESSURE SYSTEM HAVE ALLOWED ISOLATED STRONG THUNDERSTORMS TO DEVELOP OVER SOUTHEAST LOUISIANA AND COASTAL MISSISSIPPI THIS AFTERNOON. HOWEVER...THESE THUNDERSTORMS WILL QUICKLY DISSIPATE EARLY TONIGHT...AS THERMODYNAMIC SUPPORT COMES TO AN END. WILL KEEP ISOLATED POPS IN FOR THIS EVENING OVER MOST OF THE CWA...BUT EXPECT SLIGHTLY DRIER AIR...AND WEAK RIDGING TO KEEP BATON ROUGE AREA RELATIVELY DRY THROUGH TONIGHT. THE OVERALL PATTERN WILL REMAIN NEARLY THE SAME TOMORROW...BUT IT DOES APPEAR THAT THE UPPER LEVEL LOW IN ALABAMA WILL SHIFT SLIGHTLY EASTWARD INTO FLORIDA AND GEORGIA. AT THE SAME TIME...A WEAK UPPER LEVEL RIDGE WILL SPREAD INTO THE CWA. DUE TO SOME STRONGER CAPPING ALOFT ASSOCIATED WITH THIS RIDGING...WILL KEEP POPS IN ISOLATED CATEGORY FOR THE SOUTHSHORE AND ALONG THE RIVER. WEAKER CAPPING...AND SLIGHTLY BETTER LAPSE RATES WILL ALLOW FOR SCATTERED CONVECTION IN COASTAL MISSISSIPPI. ONCE AGAIN...THE CONVECTION WILL DIE OFF TOMORROW NIGHT...AS THERMODYNAMIC SUPPORT WANES. BY SUNDAY...THE UPPER LOW LOOKS LIKE IT WILL WEAKEN AND SHIFT MORE INTO GEORGIA AND THE CAROLINAS. UPPER LEVEL RIDGING WILL TAKE HOLD OF THE REGION AS A RESULT. HOWEVER...AMPLE HEAT AND HUMIDITY COMBINED WITH LOW LEVEL FORCING ALONG EXISTING BOUNDARIES WILL ALLOW FOR LOW END CHANCE POPS. THIS TREND WILL CONTINUE INTO MONDAY. IT APPERS THAT SOME DRY AIR MAY WORK INTO THE REGION ON TUESDAY...AS STRONGER SUBSIDENCE DEVELOPS. WENT WITH ISOLATED POPS FOR TUESDAY. HOWEVER...THIS DRYING TREND WILL BE SHORT LIVED...WITH ANOTHER WEAK SHORTWAVE PULLING INTO THE AREA FOR THE END OF THE WEEK. A RETURN TO MORE TYPICAL SUMMER WEATHER IS EXPECTED WITH A CHANCE OF AFTERNOON THUNDERSTORMS AND NEAR NORMAL TEMPERATURES. && .PRELIMINARY POINT TEMPS/POPS... MCB 73 94 74 94 / 20 30 20 30 BTR 75 95 76 95 / 10 20 10 30 MSY 77 94 78 94 / 20 20 10 30 GPT 76 92 76 92 / 20 30 20 30 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 32
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 213 PM 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- 213 PM 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...SMALL HAIL...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
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
205 PM CDT FRI AUG 12 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0156 PM HAIL EDEN ISLE 30.23N 89.80W
08/12/2005 0.50 INCH ST. TAMMANY LA TRAINED SPOTTER
5/8 INCH HAIL REPORTED.
0200 PM HAIL SLIDELL 30.28N 89.78W
08/12/2005 0.50 INCH ST. TAMMANY LA PUBLIC
&&
TDSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 223 PM CDT FRI AUG 12 2005 LAZ058>060-067-122005- LOWER LAFOURCHE-ST CHARLES-ST JOHN THE BAPTIST-UPPER LAFOURCHE- 223 PM CDT FRI AUG 12 2005 ...STRONG THUNDERSTORMS DETECTED NEAR LAKE DES ALLEMANDS AND LOCKPORT... AT 222 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS...ONE JUST EAST OF LAKE DES ALLEMANDS NEAR THE ST. JOHN AND ST. CHARLES PARISH LINE...AND THE SECOND NEAR LOCKPORT IN LAFOURCHE PARISH. MOVEMENT OF THE THUNDERSTORMS RANGED FROM NEAR STATIONARY TO WEST AROUND 5 MPH. THE THUNDERSTORM WILL AFFECT AREAS IN AND AROUND... LAKE DES ALLEMANDS...LOCKPORT...AND RACELAND THROUGH 3 PM. THE PRIMARY THREATS FROM THIS STORM ARE MARBLE TO DIME SIZE HAIL... DANGEROUS CLOUD TO GROUND LIGHTNING... AND WIND GUSTS OF 35 TO 45 MPH...WHICH COULD DOWN SMALL TREE LIMBS OR BRANCHES AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THE STORM HAS PASSED. THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A SHORT PERIOD OF TIME...RESULTING IN BRIEF PONDING OF WATER AROUND LOW LYING AREAS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING. 22
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 232 PM CDT FRI AUG 12 2005 LAZ062-122015- ORLEANS- 232 PM CDT FRI AUG 12 2005 ...STRONG THUNDERSTORM DETECTED OVER EAST NEW ORLEANS... AT 227 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER EAST NEW ORLEANS...BETWEEN THE FOOT OF THE TWIN SPANS BRIDGE AND LITTLE WOODS. THE THUNDERSTORM WAS NEARLY STATIONARY. THE THUNDERSTORM WILL AFFECT AREAS IN AND AROUND... NEW ORLEANS EAST INCLUDING LITTLE WOODS...VENETIAN ISLES...BAYOU SAUVAGE...AND MICHOUD. THE PRIMARY THREATS FROM THIS STORM ARE SMALL HAIL...DANGEROUS CLOUD TO GROUND LIGHTNING... AND WIND GUSTS OF 35 TO 45 MPH...WHICH COULD DOWN SMALL TREE LIMBS OR BRANCHES AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THE STORM HAS PASSED. THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A SHORT PERIOD OF TIME...RESULTING IN BRIEF PONDING OF WATER AROUND LOW LYING AREAS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING. 22
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 335 PM CDT FRI AUG 12 2005 LAZ057-059-122120- ST JAMES-UPPER LAFOURCHE- 335 PM CDT FRI AUG 12 2005 ...STRONG THUNDERSTORM DETECTED BETWEEN CONVENT AND THIBODAUX... AT 333 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR THE LAFOURCHE AND ST. JAMES PARISH LINE... JUST NORTHWEST OF KRAEMER...AND JUST SOUTHWEST AND WEST OF LOWER VACHERIE. THE THUNDERSTORM WAS NEARLY STATIONARY...BUT NEW THUNDERSTORMS WERE FORMING CLOSER TO CONVENT AND THIBODAUX. THUNDERSTORMS NEAR THIBODAUX AND CONVENT COULD ALSO BECOME STRONG BEFORE 4 PM. THE PRIMARY THREATS FROM THIS STORM ARE SMALL HAIL...DANGEROUS CLOUD TO GROUND LIGHTNING... AND WIND GUSTS OF 35 TO 45 MPH...WHICH COULD DOWN SMALL TREE LIMBS OR BRANCHES AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THE STORM HAS PASSED. THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF TWO TO THREE INCHES IN A SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING AREAS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING. 22
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
418 PM CDT FRI AUG 12 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0400 PM HAIL NE BATON ROUGE 30.45N 91.13W
08/12/2005 0.50 INCH EAST BATON ROUGE LA UNKNOWN
PUBLIC REPORTED TO TV STATION WAFB MARBLE SIZE HAIL IN
NORTHEAST BATON ROUGE.
&&The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Trees were blown down including one which fell on two cars.
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: 5475488.