A closed upper low over Texas sent multiple disturbances through the area resulting in heavy rainfall and widespread flooding across southeast Louisiana and southern Mississippi. Major flooding occurred on several rivers, with a few records broken.
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.
A closed upper low over Texas sent multiple disturbances through the area resulting in heavy rainfall and widespread flooding across southeast Louisiana and southern Mississippi. Major flooding occurred on several rivers, with a few records broken.
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 Mar 10, 4:22 PM CST, 2 hours 48 minutes earlier.
AREA FORECAST DISSCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
422 PM CST THU MAR 10 2016
.SHORT TERM...
AS ADVERTISED A LONG DURATION HEAVY RAINFALL EVENT IS FINALLY
UNDERWAY ACROSS OUR FORECAST AREA. NO MAJOR CHANGES IN THE
THINKING FROM THE LAST FORECAST PACKAGE. HEAVY RAIN IS ONGOING
ACROSS THE FORECAST AREA THIS AFTERNOON MAINLY ALONG AND WEST OF
INTERSTATE 55. BATON ROUGE HAS ALREADY MEASURED THREE INCHES OF
RAIN THIS AFTERNOON. THIS SYSTEM HAS A LOT GOING FOR IT AS IT
SLOWLY MOVES ACROSS THE AREA THROUGH SATURDAY. DEEP MOISTURE WILL
BE IN PLACE...PRECIPITABLE WATER VALUES WILL BE AT A RECORD HIGH
OVER THE NEXT FEW DAYS. THE MEASURED PRECIPITABLE WATER VALUE FROM
THIS MORNING WAS 1.76 INCHES AND THAT WAS A DAILY RECORD...AND I
EXPECT THE NEXT FEW OBSERVATIONS TO BE RECORDS AS WELL. MODELS
INDICATE THAT THE VALUES OVER THE NEXT 24 TO 48 HOURS WILL BE IN
THE 1.8 TO 2.1 INCH RANGE. THAT IS A SIGNIFICANT AMOUNT OF
MOISTURE FOR THIS TIME OF THE YEAR. WARM CLOUD DEPTHS ARE IN THE
12K TO 14K FOOT RANGE...COUPLE THAT WITH THE SLOW MOVING AND
TRAINING NATURE OF THE SHOWERS AND STORMS AND YOU HAVE A RECIPE
FOR FLOODING. THE WEATHER PREDICTION CENTER HAS OUR AREA IN A
MODERATE RISK FOR FLASH FLOODING TONIGHT THROUGH FRIDAY EVENING.
JUST LOOKING AT A FEW TRENDS OF HIGH RES GUIDANCE IT LOOKS AS IF
THIS CURRENT BAND OF RAIN WILL STALL OVER THE NEXT FEW HOURS AND
PIVOT TO MORE OF AN EAST/WEST ORIENTATION BEFORE AN ADDITIONAL BAND
DEVELOPS OVERNIGHT AND MOVES IN BY DAYBREAK. I AM BECOMING MORE
CONCERNED OVERNIGHT WITH THE DEVELOPMENT OF SOME DEEPER CONVECTION
EMBEDDED IN THE OVERALL BAND THAT WOULD GREATLY ENHANCE RAINFALL
TOTALS. THERE IS SOME ELEVATED CAPE THAT WILL BE IN PLACE TONIGHT
AND WITH THESE LITTLE IMPULSES IN THE MAIN FLOW THAT COULD
TRIGGER A FEW STORMS WITH HEAVIER RAIN.
THE SEVERE WEATHER TREAT IS SMALL BUT NON ZERO...WE STILL MAINTAIN
A MARGINAL RISK FOR SEVERE WEATHER TONIGHT WITH DAMAGING WINDS
BEING THE MAIN CONVECTIVE CONCERN OUTSIDE OF HEAVY RAINFALL. AN
ADDITIONAL 3 TO 4 INCHES OF RAIN WITH LOCALLY HIGHER AMOUNTS COULD
IMPACT AREAS WEST OF INTERSTATE 55...BRINGING RAIN TOTALS OT 7 TO
10 INCHES. FOR AREAS EAST OF THE I-55 CORRIDOR IN SOUTHEAST
LOUISIANA AND SOUTHWEST MISSISSIPPI...INCLUDING METRO NEW
ORLEANS...HEAVY RAINFALL OF 3 TO 6 INCHES WITH LOCALLY HIGHER
AMOUNTS OVER 8 INCHES COULD OCCUR TONIGHT AND TOMORROW. AS STATED
IN THE PREVIOUS PACKAGE THERE WAS SHIFT IN THINKING FOR
SATURDAY...AND THAT INDICATION HAS BEEN REINFORCED WITH MODEL
RUNS FOR TODAY. THE HEAVY RAIN THREAT WILL LINGER OVER THE
FORECAST AREA THROUGH SATURDAY AFTERNOON. IT LOOKS LIKE THE
HIGHEST PROBABILITY AREAS FOR HEAVY RAINFALL WILL GENERALLY BE
FROM METRO NEW ORLEANS AND THE NORTHSHORE EASTWARD ACROSS THE
MISSISSIPPI GULF COAST. AN ADDITIONAL 3 TO 5 INCHES OF RAIN WITH
LOCALLY HIGHER AMOUNTS OF OVER 6 INCHES COULD IMPACT METRO NEW
ORLEANS AND NORTHSHORE. THE MISSISSIPPI COAST COULD EASILY SEE 3
TO 5 INCHES OF RAIN AS WELL WITH LOCALLY HIGHER AMOUNTS OVER 6
INCHES POSSIBLE. STORM TOTAL RAINFALL ACROSS THE AREA COULD VARY
FROM 7 TO 10 INCHES FOR THE BATON ROUGE AREA AND MISSISSIPPI GULF
COAST TO A BULLSEYE OF 10 PLUS INCHES FOR METRO NEW ORLEANS AND
THE NORTHSHORE BY THE TIME THE EVENT IS OVER. ALL OF THESE TOTALS
ARE HIGHLY DEPENDENT ON EXACTLY WHERE THE HEAVY RAIN BAND
DEVELOPS...AND IF MULTIPLE AREAS OF HEAVIER RAIN TRAIN OVER THE
SAME LOCATION. SIGNIFICANT FLOODING ISSUES COULD ARISE WITH THIS
EVENT GIVEN THE HIGH RAINFALL TOTALS EXPECTED. 13/MH
.LONG TERM...
THE SYSTEM FINALLY MOVES OUT LATE SATURDAY INTO SUNDAY. ANOTHER
QUICK MOVING IMPULSE WILL MOVE NORTH OF THE AREA. NOT EXPECTING
ANY RAINFALL FROM THAT IMPULSE...SO WE WILL DRY OUT FOR THE
LATTER HALF OF THE WEEKEND. TEMPERATURES WILL WARM INTO THE 80S BY
EARLY NEXT WEEK. THE NEXT CHANCE OF ORGANIZED RAINFALL LOOKS TO
OCCUR IN THE WEDNESDAY THURSDAY TIMEFRAME. A FRONT IS EXPECTED TO
MOVE THROUGH AROUND THAT TIME AND SHOULD BE THE FOCUS FOR
SCATTERED SHOWER AND THUNDERSTORM ACTIVITY. TEMPERATURES WILL
REMAIN MILD...WITH HIGHS IN THE MIDDLE TO UPPER 70S BOTH WEDNESDAY
AND THURSDAY. AS MOISTURE INCREASES OVER THE AREA...OVERNIGHT LOWS
SHOULD CLIMB BACK INTO THE 60S BY WEDNESDAY NIGHT. 13/MH
&&
.AVIATION...
CONDITIONS WILL BE ROUGH THROUGH THE FCST. ALL TERMINALS WILL
LIKELY BE DEALING WITH PERSISTENT MVFR TO IFR CONDITIONS AND COULD
EVEN DROP TO LIFR DURING THE HEAVIER SHRA AND TSRA. WITH THE
EXCEPTION OF THE MS COAST ALL TERMINALS WILL BE DEALING WITH SOME
CONVECTION BY NO LATER THAN 2230Z. WINDS ARE FINALLY RELAXING SOME
SO NOT ANTICIPATING ANY LLWS ISSUES TOMORROW MORNING AROUND MSY
AND NEW. /CAB/
&&
.MARINE...
STRONG ONSHORE FLOW WILL CONTINUE INTO TOMORROW AS THE GRADIENT
RELAXES AND TIGHTENS BACK UP WITH EACH WAVE. SOUTHEAST WINDS WILL
CONTINUE TO RANGE FROM 15 TO 25 KTS AT TIMES. EVEN WHEN THE WINDS
DROP BELOW 20 KTS FREQUENT GUSTS OF GREATER THAN 25 KTS WILL BE
OCCURRING OVER PRETTY MUCH ALL OF THE COASTAL WATERS. SCY FLAGS
WILL REMAIN IN EFFECT THROUGH FRI AND WILL LIKELY NEED TO BE
EXTENDED INTO THE WEEKEND.
THE STRONG ONSHORE FLOW IS ALSO LEADING TO MINOR TO MODERATE COASTAL
FLOODING AND THIS WILL CONTINUE TO BE THE CASE THROUGH TOMORROW AS
WELL. THERE IS A CHANCE THAT TIDES COULD BOUNCE BACK TO 3.5 FT ABV
NORMAL IN ISOLATED AREAS FRI NIGHT AND SAT MORNING WHEN THE WINDS
LOOK TO INCREASE ONCE AGAIN AND THE ASTRONOMICAL TIDE RANGES RAMP
BACK UP. /CAB/
&&
.DECISION SUPPORT...
.DECISION SUPPORT...
DSS CODE....YELLOW.
DEPLOYED...NONE.
ACTIVATION...NONE.
ACTIVITIES...RIVER FLOODING
FLASH FLOOD WATCH
COASTAL FLOOD ADV
SMALL CRAFT ADV
DECISION SUPPORT SERVICES (DSS) CODE LEGEND
GREEN = NO WEATHER IMPACTS THAT REQUIRE ACTION
BLUE = LONG FUSED WATCH/WARNING/ADVISORY IN EFFECT OR HIGH
VISIBILITY EVENT
YELLOW = HEIGHTENED IMPACTS WITH SHORT FUSED WATCH/WARNING/ADVISORY
ISSUANCES; RADAR SUPPORT
ORANGE = HIGH IMPACTS - SLIGHT TO MODERATE RISK SEVERE; NEARBY
TROPICAL EVENTS; HAZMAT OR OTHER LARGE EPISODES
RED = FULL ENGAGEMENT FOR MODERATE RISK SVR AND/OR DIRECT
TROPICAL THREATS; EVENTS OF NATIONAL SIGNIFICANCE
&&
.PRELIMINARY POINT TEMPS/POPS...
MCB 68 72 65 72 / 100 100 80 90
BTR 68 73 65 74 / 100 100 80 80
ASD 69 73 67 73 / 100 100 90 90
MSY 69 73 67 74 / 100 100 90 90
GPT 68 73 67 72 / 100 100 90 90
PQL 68 73 66 72 / 100 100 90 90
&&
.LIX WATCHES/WARNINGS/ADVISORIES...
LA...FLASH FLOOD WATCH THROUGH SATURDAY AFTERNOON FOR LAZ034>037-039-
040-046>050-056>072.
COASTAL FLOOD ADVISORY UNTIL 6 PM CST FRIDAY FOR LAZ049-050-057-
058-060>064-066>070.
WIND ADVISORY UNTIL 6 PM CST THIS EVENING FOR LAZ040-058>070-072.
COASTAL FLOOD WARNING UNTIL 6 PM CST THIS EVENING FOR LAZ040-072.
COASTAL FLOOD ADVISORY FROM 6 PM THIS EVENING TO 6 PM CST FRIDAY
FOR LAZ040-072.
GM...SMALL CRAFT ADVISORY UNTIL 6 PM CST FRIDAY FOR GMZ530-532-534-
536-538-550-552-555-557-570-572-575-577.
MS...FLASH FLOOD WATCH THROUGH SATURDAY AFTERNOON FOR MSZ068>071-077-
080>082.
COASTAL FLOOD ADVISORY UNTIL 6 PM CST FRIDAY FOR MSZ081-082.
WIND ADVISORY UNTIL 6 PM CST THIS EVENING FOR MSZ080>082.
COASTAL FLOOD WARNING UNTIL 6 PM CST THIS EVENING FOR MSZ080.
COASTAL FLOOD ADVISORY FROM 6 PM THIS EVENING TO 6 PM CST FRIDAY
FOR MSZ080.
GM...SMALL CRAFT ADVISORY UNTIL 6 PM CST FRIDAY FOR GMZ532-534-536-
538-550-552-555-557-570-572-575-577.
&&HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 600 PM CST THU MAR 10 2016 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>082-111400- LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND- LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND- COASTAL WATERS FROM PORT FOURCHON LA TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON LOUISIANA OUT 20 NM- COASTAL WATERS FROM BOOTHVILLE LA TO SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MISSISSIPPI TO STAKE ISLAND OUT 20 NM- COASTAL WATERS FROM PORT FOURCHON LOUISIANA TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM- COASTAL WATERS FROM SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON LOUISIANA FROM 20 TO 60 NM- COASTAL WATERS FROM STAKE ISLAND LA TO SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MISSISSIPPI TO STAKE ISLAND LOUISIANA OUT 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- 600 PM CST THU MAR 10 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS. .DAY ONE...TONIGHT SMALL CRAFT ADVISORIES REMAIN IN EFFECT FOR ALL THE COASTAL WATERS TONIGHT. A COASTAL FLOOD ADVISORY IS IN EFFECT FOR ALL COASTAL LOCATIONS FROM THE MOUTH OF THE ATCHAFALAYA RIVER TO THE MISSISSIPPI-ALABAMA STATE LINE. TIDES UP TO 2.5 ABOVE NORMAL CAN BE EXPECTED WITH A FEW LOCATIONS SEEING TIDES OF 3 TO 3.5 FEET ABOVE NORMAL LEVELS. A MARGINAL RISK OF SEVERE THUNDERSTORMS WILL EXIST FOR THE ENTIRE AREA TONIGHT. THE MAIN CONCERNS WILL BE DAMAGING WINDS AND THE POSSIBILITY OF AN ISOLATED TORNADO. A FLASH FLOOD WATCH REMAINS IN EFFECT. HEAVY RAINFALL IS EXPECTED TO IMPACT SOME AREAS OVERNIGHT WITH A FEW INCHES OF RAINFALL POSSIBLE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A FLASH FLOOD WATCH WILL REMAIN IN EFFECT FOR THE ENTIRE AREA THROUGH SATURDAY AFTERNOON. STORM TOTAL RAINFALL AMOUNTS OF 7 TO 10 INCHES ARE EXPECTED WITH LOCALLY HIGHER AMOUNTS POSSIBLE. A SMALL CRAFT ADVISORY WILL REMAIN IN EFFECT FOR ALL OF THE COASTAL WATERS THROUGH FRIDAY FOR HAZARDOUS CONDITIONS FOR SMALL CRAFT. A COASTAL FLOOD ADVISORY WILL REMAIN IN EFFECT FOR ALL COASTAL LOCATIONS FROM THE MOUTH OF THE ATCHAFALAYA RIVER TO THE MISSISSIPPI- ALABAMA STATE LINE THROUGH FRIDAY. TIDES UP TO 2.5 FEET ABOVE NORMAL CAN BE EXPECTED WITH A FEW LOCATIONS SEEING TIDES OF 3 TO 3.5 FEET ABOVE NORMAL LEVELS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THROUGH SATURDAY...MAINLY FOR FLOOD REPORTING.
The national radar mosaic for the moment the first event began.
11 flash flood, 7 flood, 4 heavy rain, 2 thunderstorm wind. Local standard time, as filed.
Multiple roads were reported closed across Tangipahoa Parish.
Portions of George White Road were reported under one foot of water.
Numerous roads were reported closed across Tangipahoa Parish due to high water.
Several high water rescues were ongoing in the city of Hammond.
Several roads were reported closed due to high water in the Folsom area.
East Morris Avenue in Hammond was reported closed due to high water. Three vehicles were abandoned in the roadway.
Broadcast media on social media reported that water was in 40 to 50 homes near Rufus Bankston and Quick Boulevard in Hammond, with water rescues occurring.
Broadcast media relayed a report from the Franklinton Police Department of moderate street flooding in Franklinton. They reported that the Washington Parish Fairgrounds are flooded with the potential for a bridge to wash out. One vehicle was reported completely submerged.
The CO-OP Observer in Livingston reports a storm total of 7.57 inches with rain still falling.
A tree was reported blown down on Bayou Black Drive near Houma. Event time estimated from radar.
A tree was blown over in the 4400 block of Bayou Black Drive. Event time estimated from radar.
A NWS storm spotter reported homes were flooded in a subdivision 3 miles west of Ponchatoula. A storm total of 13.10 inches of rain was reported since 4 pm on the 10th.
The CO-OP observer in Mount Herman reported that 16 inches of rain had fallen in Mount Herman with light to moderate rain still occurring.
The CO-OP observer in Ponchatoula measured 13.36 inches of rain overnight.
The Livingston CO-OP observer reported 10.25 inches of rain overnight.
St. Tammany Parish Sheriff's Office and U.S. Wildlife and Fisheries conducted rescue operations of 86 children and a number of counselors from the Camp Abbey Retreat Center.
Water was reported leaving the banks of Bedico Creek and was approximately 1 to 1.5 feet from encroaching on Interstate 12.
The Tangipahoa Parish Sheriff's Office reported that 300 to 400 homes had flood damage in the parish, with most of those homes near Hammond.
Up to 3 feet of water was reported covering the roads in the Lake Ramsay Community. Water was reportedly still rising.
Louisiana Highway 25 was reported flooded between Lake Ramsey Road and Million Dollar Road.
Louisiana Highway 437 north of River Road was reported closed due to river flooding on the Bogue Falaya.
Louisiana Highway 435 near Hillcrest Road was reported closed due to high water.
Estimates from St. Tammany Fire District 5 that approximately 100 people were rescued from the Park Lane area and 50 to 60 people from the Albert Thompson area through the day. Report was relayed by social media.
Water was reported entering homes in the Magnolia Gardens Subdivision in Covington. The flooding was related to riverine flooding from the Bogue Falaya River.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2016Every state in 2016This day in weather historyWarnings in Louisiana, March 2016
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: 623143, 623144, 623145, 623146, 623147, 623148, 623149, 623150, 623162, 623160, 623161, 623151, 623163, 623164, 623165, 623152, 623153, 623166, 623154, 623155, 623156, 623157, 623158, 623159.