Isolated severe thunderstorms and heavy rain occurred in advance of a cold front that moved across 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.
Isolated severe thunderstorms and heavy rain occurred in advance of a cold front that moved across 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 Dec 21, 3:41 AM CST, 2 hours 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 341 AM CST THU DEC 21 2006 .DISCUSSION...WET PATTERN CONTINUES TO EVOLVE THIS MORNING AS A WEAK COLD FRONT CONTINUES TO MOVE SLOWLY EWD INTO SE LA AND S MS. PERSISTENT RAIN BAND CONTINUES OVER THE SOUTHERN AND EASTERN HALF OF THE FORECAST AREA AHEAD OF THE APPROACHING BOUNDARY. WHILE DEEP LAYER INSTABILITY IS LACKING MINIMIZING THE THREAT FOR HEAVY RAINFALL...STAGNANT SHEAR AXIS SHOULD REMAIN IN PLACE WITH SLIGHTLY BETTER FORCING ACCOMPANYING THE FRONT. THIS WILL LEAD TO CONTINUED OFF AND ON SHOWERS...ALONG WITH AN OCCASIONAL TSTM...THROUGH TONIGHT BEFORE MOVING EAST FRI. THE THREAT FOR FLASH FLOODING LOOKS MINIMAL FOR NOW GIVEN THE RELATIVELY HIGH FFG VALUES...ALTHOUGH A CONTINUED SATURATION OF THE GROUND MAY LEAD TO LOWER GUIDANCE VALUES LATER TODAY AND TONIGHT AND A FLOOD WATCH MAY BE NECESSARY AT A LATER TIME. THE OUTLOOK AREA LOOKS TO GET A BRIEF REPRIEVE FROM THE RAINFALL SAT AS THE UPPER LOW HELPING TO DRIVE MUCH OF THE PRECIP MOVES OFF TOWARD THE NE. A SECOND UPPER LOW THOUGH IS STILL EXPECTED TO DIVE INTO S TX SUN AS AN ASSOCIATED LOW PRESSURE FEATURE DEVELOPS IN THE WESTERN GULF. THE GFS STILL SHOWS THIS FEATURE TRACKING EWD ACROSS THE NORTHERN GULF SUN AS THE UPPER LOW SWINGS THROUGH THE LOWER MISSISSIPPI VALLEY. THERE LOOKS TO BE ENOUGH WRAP AROUND MOISTURE TO WARRANT MORE RAIN INTO CHRISTMAS DAY. THIS ENERGY THEN GETS TRANSPORTED TOWARD THE ATLANTIC BASIN BY TUE AS A THIRD UPPER LOW DIVES SWD INTO THE REGION WITH A GOOD SURGE OF POLAR AIR IN TACT. THIS SHOULD BRING WEATHER CONDITIONS BACK TO NEAR NORMAL FOR THIS EARLY WINTER SEASON BY THE MIDDLE OF NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... MCB 71 56 60 40 / 80 80 50 10 BTR 72 57 61 41 / 80 80 50 10 MSY 73 61 65 49 / 80 80 70 30 GPT 72 61 67 47 / 80 80 70 40 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 09
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 515 AM CST THU DEC 21 2006 LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-221100- 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- 515 AM CST THU DEC 21 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT WIDESPREAD SHOWERS ALONG WITH A FEW THUNDERSTORMS ARE EXPECTED TODAY AND TONIGHT AS A WEAK COLD FRONT MOVES EASTWARD ACROSS THE AREA. SEVERE THUNDERSTORMS ARE NOT EXPECTED ALTHOUGH SOME STORMS MAY PRODUCE BRIEF HEAVY DOWNPOURS. PERSISTENT BANDS OF RAIN THAT CONTINUE TO REDEVELOP MAY LEAD TO PONDING ON ROADWAYS AND IN LOW LYING AREAS. BRIEF LOCALIZED FLOODING MAY ALSO OCCUR IN SOME AREAS WHICH EXPERIENCE HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NUMEROUS SHOWERS ALONG WITH A FEW THUNDERSTORMS REMAIN POSSIBLE EARLY FRIDAY BEFORE THE COLD FRONT MOVES EAST OF THE OUTLOOK AREA. SEVERE THUNDERSTORMS ARE NOT EXPECTED ALTHOUGH A FEW STORMS MAY AGAIN PRODUCE BRIEF HEAVY RAINFALL. IN ADDITION TO THE RAIN AND THUNDERSTORM THREAT...SMALL CRAFT ADVISORIES MAY BE WARRANTED FOR THE COASTAL WATERS SATURDAY NIGHT THROUGH CHRISTMAS DAY AS A SURFACE LOW PRESSURE FEATURE MOVES EASTWARD ACROSS THE NORTHERN GULF. .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. FIRST RESPONSE AGENCIES THOUGH ARE ENCOURAGED TO MONITOR THE LATEST INFORMATION REGARDING THE POSSIBILITY FOR LOCALIZED FLOODING TODAY THROUGH EARLY FRIDAY.
The national radar mosaic for the moment the first event began.
3 flash flood, 3 heavy rain, 1 tornado. Local standard time, as filed.
Heavy rainfall caused the flooding of a few homes in Golden Meadow and numerous roadways across central and southern areas of the parish.
Heavy rainfall caused the flooding of numerous roadways in Houma and other locations around the parish. The Houma Tunnel was closed due to high water.
Heavy rainfall of 3 to 6 inches caused the flooding of three homes and a few businesses in Metairie and one home in Bridge City. Numerous roadways and a few vehicles were flooded.
Heavy rainfall of 3 to 6 inches caused the flooding of three school and a few homes in the Carrollton and Broadmoor areas. Numerous roadways and a few vehicles were flooded.
A weak tornado briefly touched down causing minor damage to several homes. One house had roof damage while other houses had gutters and awnings torn off.
Heavy rainfall caused the flooding of numerous roadways around Ponchatoula and Hammond as well as other locations around the parish.
Heavy rainfall cuased the flooding of numerous roadways around Belle Chasse and other locations across northern areas of the parish.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2006Every state in 2006This day in weather historyThe tornado archive for Louisiana, 2006Warnings in Louisiana, December 2006
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: 9344, 9346, 9341, 9342, 9339, 9347, 9345.