Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS New Orleans, LA

March 10, 2016Walthall County, Mississippi; 12 parishes in Louisiana

NWS New Orleans, LA issued this flash flood warning at Mar 10, 2016, 5:05 PM CST for Walthall County, Mississippi; 12 parishes in Louisiana. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 10, 2016, 5:05 PM CST (23:05 UTC)
Expired
Mar 10, 2016, 8:00 PM CST
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties Ascension Parish, LA, Assumption Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, Walthall County, MS

What was reported inside it

TimeReportWhereRemark
Mar 10, 7:10 PM CSTFLASH FLOODAmite, LAMULTIPLE ROADS CLOSED PARISH WIDE.
Mar 10, 8:05 PM CSTFLASH FLOOD2 Nw Springfield, LAPORTIONS OF GEORGE WHITE ROAD REPORTED UNDER A FOOT OF WATER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 125 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.1 hours before the alert went out and 78 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2016-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 327 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2016-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 552 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
327 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
496 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
552 m²/s²
0-3 km storm-relative helicity
568 m²/s²
Significant tornado parameter
1.1
Supercell composite
11.5

Open this sounding in Storm Lab

The text

As transmitted.

443 
WGUS54 KLIX 102305
FFWLIX
LAC005-007-057-063-089-091-093-095-103-105-109-117-MSC147-110200-
/O.NEW.KLIX.FF.W.0001.160310T2305Z-160311T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
505 PM CST THU MAR 10 2016

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN LAFOURCHE PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHWESTERN ST. CHARLES PARISH IN SOUTHEASTERN LOUISIANA...
  WASHINGTON PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHWESTERN ST. TAMMANY PARISH IN SOUTHEASTERN LOUISIANA...
  TANGIPAHOA PARISH IN SOUTHEASTERN LOUISIANA...
  LIVINGSTON PARISH IN SOUTHEASTERN LOUISIANA...
  CENTRAL ASSUMPTION PARISH IN SOUTHEASTERN LOUISIANA...
  ST. JAMES PARISH IN SOUTHEASTERN LOUISIANA...
  ST. JOHN THE BAPTIST PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHERN TERREBONNE PARISH IN SOUTHEASTERN LOUISIANA...
  SOUTHEASTERN ST. HELENA PARISH IN SOUTHEASTERN LOUISIANA...
  CENTRAL ASCENSION PARISH IN SOUTHEASTERN LOUISIANA...
  WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 800 PM CST

* AT 504 PM CST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  HEAVY RAIN FALLING ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN
  HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  HAMMOND...THIBODAUX...GONZALES...COVINGTON...DONALDSONVILLE...
  FRANKLINTON...NAPOLEONVILLE...RESERVE...AMITE...LAPLACE...
  PONCHATOULA...AMITE CITY...GRAMERCY...LUTCHER...LIVINGSTON...
  INDEPENDENCE...TYLERTOWN...SORRENTO...ROSELAND AND FRENCH
  SETTLEMENT.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3130 9004 3114 9001 3113 8994 3107 8992
      3107 8984 3046 9014 3025 9035 3022 9041
      2966 9064 2985 9118 3100 9044 3100 9026
      3130 9024

$$

24/RR
2 follow-up statements
015 
WGUS74 KLIX 110018
FFSLIX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
618 PM CST THU MAR 10 2016

LAC007-057-089-109-110025-
/O.CAN.KLIX.FF.W.0001.000000T0000Z-160311T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAFOURCHE LA-ST. CHARLES LA-ASSUMPTION LA-TERREBONNE LA-
618 PM CST THU MAR 10 2016

...THE FLASH FLOOD WARNING FOR NORTHWESTERN LAFOURCHE...NORTHWESTERN
ST. CHARLES...CENTRAL ASSUMPTION AND NORTHERN TERREBONNE PARISHES IS
CANCELLED...

THE HEAVY RAIN HAS TAPERED...AND FLOODING IS NO LONGER EXPECTED TO
POSE AN IMMEDIATE THREAT. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES.
A FLOOD ADVISORY REMAINS IN EFFECT UNTIL 830 PM. A FLASH FLOOD WATCH
REMAINS IN EFFECT THROUGH SATURDAY AFTERNOON. 

LAT...LON 3130 9004 3118 9003 3114 9001 3113 8994
      3107 8992 3107 8984 3046 9014 3025 9035
      3023 9043 3029 9040 3034 9048 3030 9056
      3019 9060 3017 9057 3017 9052 3000 9070
      3007 9104 3100 9044 3100 9026 3130 9024

$$

LAC005-063-091-093-095-103-105-117-MSC147-110200-
/O.CON.KLIX.FF.W.0001.000000T0000Z-160311T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON LA-ST. TAMMANY LA-TANGIPAHOA LA-LIVINGSTON LA-
ST. JAMES LA-ST. JOHN THE BAPTIST LA-ST. HELENA LA-ASCENSION LA-
WALTHALL MS-
618 PM CST THU MAR 10 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM CST FOR
WASHINGTON...NORTHWESTERN ST. TAMMANY...TANGIPAHOA...LIVINGSTON...
NORTHERN ST. JAMES...NORTHERN ST. JOHN THE BAPTIST...SOUTHEASTERN ST.
HELENA...CENTRAL ASCENSION PARISHES IN SOUTHEASTERN LOUISIANA AND
WALTHALL COUNTIES...

AT 615 PM CST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE WARNED AREA. TWO TO FOUR
INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HAMMOND...GONZALES...COVINGTON...DONALDSONVILLE...FRANKLINTON...
AMITE...PONCHATOULA...AMITE CITY...GRAMERCY...LUTCHER...LIVINGSTON...
INDEPENDENCE...TYLERTOWN...SORRENTO...ROSELAND...FRENCH SETTLEMENT...
ALBANY...PORT VINCENT...FOLSOM AND SPRINGFIELD.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 4 ARE POSSIBLE IN THE WARNED
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3130 9004 3118 9003 3114 9001 3113 8994
      3107 8992 3107 8984 3046 9014 3025 9035
      3023 9043 3029 9040 3034 9048 3030 9056
      3019 9060 3017 9057 3017 9052 3000 9070
      3007 9104 3100 9044 3100 9026 3130 9024

$$

24/RR
912 
WGUS74 KLIX 110133
FFSLIX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
733 PM CST THU MAR 10 2016

LAC005-063-091-093-095-103-105-117-MSC147-110200-
/O.CON.KLIX.FF.W.0001.000000T0000Z-160311T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON LA-ST. TAMMANY LA-TANGIPAHOA LA-LIVINGSTON LA-
ST. JAMES LA-ST. JOHN THE BAPTIST LA-ST. HELENA LA-ASCENSION LA-
WALTHALL MS-
733 PM CST THU MAR 10 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM CST FOR
WASHINGTON...NORTHWESTERN ST. TAMMANY...TANGIPAHOA...LIVINGSTON...
NORTHERN ST. JAMES...NORTHERN ST. JOHN THE BAPTIST...SOUTHEASTERN ST.
HELENA...CENTRAL ASCENSION PARISHES IN SOUTHEASTERN LOUISIANA AND
WALTHALL COUNTIES...

AT 732 PM CST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE WARNED AREA.  FLASH
FLOODING MAY ALREADY BE OCCURRING OR IS EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HAMMOND...GONZALES...COVINGTON...DONALDSONVILLE...FRANKLINTON...
AMITE...PONCHATOULA...AMITE CITY...GRAMERCY...LUTCHER...LIVINGSTON...
INDEPENDENCE...TYLERTOWN...SORRENTO...ROSELAND...FRENCH SETTLEMENT...
ALBANY...PORT VINCENT...FOLSOM AND SPRINGFIELD.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3130 9004 3118 9003 3114 9001 3113 8994
      3107 8992 3107 8984 3046 9014 3025 9035
      3023 9043 3029 9040 3034 9048 3030 9056
      3019 9060 3017 9057 3017 9052 3000 9070
      3007 9104 3100 9044 3100 9026 3130 9024

$$

24/RR

What forecasters said that day

The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Mar 10, 4:22 PM CST, 43 minutes earlier.

Area forecast discussion, Mar 10, 4:22 PM CST, 43 minutes before
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, Mar 10, 11:09 AM CST, 5 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1109 AM 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>082-110515-
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-
1109 AM CST THU MAR 10 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SMALL CRAFT ADVISORIES WILL REMAIN FOR ALL COASTAL WATERS THROUGH
MIDNIGHT.

A WIND ADVISORY REMAINS IN EFFECT FOR MUCH OF THE OUTLOOK AREA
ALONG AND SOUTH OF THE INTERSTATE 10 AND 12 CORRIDOR. SOUTHERLY
WINDS OF 20 TO 30 MPH WITH FREQUENT GUSTS OF 35 TO 45 MPH ARE
EXPECTED.

A COASTAL FLOOD WARNING IS NOW IN EFFECT FOR HANCOCK COUNTY ALONG
WITH ST TAMMANY AND TANGIPAHOA PARISHES TILL 6 PM CST TONIGHT. A
COASTAL FLOOD ADVISORY REMAINS IN EFFECT FOR ALL COASTAL LOCATIONS
ON EITHER SIDE OF THE WARNING FROM THE MOUTH OF THE ATCHAFALAYA
RIVER TO THE MISSISSIPPI-ALABAMA STATE LINE. THE LOCATIONS WITHIN
THE WARNING WILL SEE TIDES 3 TO 3.5 FEET ABOVE NORMAL WHILE THE
ADVISORY AREA WILL CONTINUE TO EXPERIENCE TIDES UP TO 2.5 FEET
ABOVE NORMAL LEVELS.

A MARGINAL RISK OF SEVERE THUNDERSTORMS WILL EXIST FOR THE ENTIRE
AREA. THE MAIN CONCERNS WILL BE DAMAGING WINDS HEAVY RAINFALL AND
THE POSSIBILITY OF AN ISOLATED TORNADO.

.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
11 INCHES WITH LOCALLY HIGHER AMOUNTS EXCEEDING 13 INCHES ARE
POSSIBLE.

ADDITIONAL SMALL CRAFT ADVISORIES ALONG WITH COASTAL FLOOD
ADVISORIES AND POSSIBLY WARNINGS WILL LIKELY BE NEEDED FRIDAY AND
INTO THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY STARTING TODAY MAINLY FOR
FLOOD REPORTING.

In the hours before

Special weather statement, Mar 10, 12:38 PM CST, 4 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1238 PM CST THU MAR 10 2016

LAZ034>037-046>050-056-057-059-065-066-MSZ068-069-101900-
EAST FELICIANA-POINTE COUPEE-EAST BATON ROUGE-LOWER
TERREBONNE-LIVINGSTON-WEST FELICIANA-UPPER LAFOURCHE-IBERVILLE-ST.
HELENA-ASSUMPTION-WEST BATON ROUGE-UPPER TERREBONNE-ASCENSION-ST.
JAMES-AMITE-WILKINSON-
1238 PM CST THU MAR 10 2016

...PERSISTENT MODERATE TO HEAVY RAINFALL UNDERWAY...

AT 1236 PM CST...A LINE OF STRONG THUNDERSTORMS WAS OVER THE
ATCAHAFALAYA BASIN...AND MOVING NORTH AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
BATON ROUGE...HOUMA...ZACHARY...THIBODAUX...BAKER...DENHAM SPRINGS...
GONZALES...DONALDSONVILLE...PLAQUEMINE...PORT ALLEN...NEW ROADS...
JACKSON...ST. FRANCISVILLE...CLINTON...LIBERTY...NAPOLEONVILLE...OAK
HILLS PLACE...ST. GABRIEL...WALKER AND ADDIS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS IN SOME
LOCATIONS...AND MAY CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR
VEHICLE THROUGH FLOODED ROADWAYS. A FLASH FLOOD WATCH IS IN EFFECT.
IF HEAVY RAINS PERSIST...FLASH FLOOD WARNINGS MAY BE NEEDED THIS
AFTERNOON AND EVENING.

LAT...LON 3135 9066 2911 9077 2918 9094 2926 9088
      2919 9095 2932 9129 2936 9127 2939 9120
      2940 9121 2933 9134 2963 9108 2981 9109
      3050 9172 3104 9170 3104 9169 3097 9166
      3122 9158 3137 9126 3137 9123
TIME...MOT...LOC 1836Z 193DEG 71KT 3167 9165 3023 9162

24/RR

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 10, 8:44 AM CSTRiver Flood WarningLIXPike70 hr
Mar 10, 9:19 AM CSTRiver Flood WarningLIXHarrison5 days
Mar 10, 10:03 AM CSTRiver Flood WarningLIXPike, Walthall4 days
Mar 10, 10:06 AM CSTRiver Flood WarningLIXHancock, Pearl River48 days
Mar 10, 10:06 AM CSTRiver Flood WarningLIXHancock, Pearl River50 days
Mar 10, 10:08 AM CSTRiver Flood WarningLIXPearl River4 days
Mar 10, 10:10 AM CSTRiver Flood WarningLIXPearl River3 days
Mar 10, 10:25 AM CSTCoastal Flood WarningLIX8 hr
Mar 10, 10:25 AM CSTCoastal Flood AdvisoryLIX19 hr
Mar 10, 12:38 PM CSTSpecial Weather StatementLIXAmite, Wilkinson22 min
Mar 10, 1:17 PM CSTAreal Flood AdvisoryLIXAmite, Pike, Wilkinson3 hr
Mar 10, 3:10 PM CSTAreal Flood AdvisoryLIXAmite, Pike, Walthall2 hr
Mar 10, 4:32 PM CSTAreal Flood AdvisoryLIXAmite, Pike, Walthall4 hr
Mar 9, 7:52 PM CSTRiver Flood WarningLIXTangipahoa7 days
Mar 9, 7:52 PM CSTRiver Flood WarningLIXSaint Tammany4 days
Mar 10, 8:41 AM CSTRiver Flood WarningLIXSaint Tammany3 days
Mar 10, 8:41 AM CSTRiver Flood WarningLIXSaint Tammany5 days
Mar 10, 8:43 AM CSTRiver Flood WarningLIXSaint Tammany69 hr
Mar 10, 8:47 AM CSTRiver Flood WarningLIXSaint Helena4 days
Mar 10, 8:47 AM CSTRiver Flood WarningLIXLivingston5 days
Mar 10, 8:47 AM CSTRiver Flood WarningLIXSaint Helena4 days
Mar 10, 9:10 AM CSTRiver Flood WarningLIXEast Baton Rouge, Livingston5 days
Mar 10, 9:10 AM CSTRiver Flood WarningLIXEast Baton Rouge7 days
Mar 10, 9:18 AM CSTRiver Flood WarningLIXEast Baton Rouge4 days
Mar 10, 10:03 AM CSTRiver Flood WarningLIXSaint Tammany7 days

Nearby

Flash Flood Warnings in Louisiana, 2016Flash Flood Warnings in Mississippi, 2016Every flash flood warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.