Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 3, NWS New Orleans, LA

March 10, 201611 parishes in Louisiana; 4 counties in Mississippi

NWS New Orleans, LA issued this flash flood warning at Mar 10, 2016, 9:28 PM CST for 11 parishes in Louisiana; 4 counties in Mississippi. It was in force for 4 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, 9:28 PM CST (03:28 UTC)
Expired
Mar 11, 2016, 1:30 AM CST
In force
4 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, Amite County, MS, Pearl River County, MS, Pike County, MS, Walthall County, MS

What was reported inside it

TimeReportWhereRemark
Mar 11, 12:30 AM CSTFLASH FLOODHammond, LANUMEROUS ROADS CLOSED ACROSS TANGIPAHOA PARISH DUE TO HIGH WATER.
Mar 11, 1:40 AM CSTFLASH FLOODHammond, LAHIGH WATER RESCUES ONGOING IN HAMMOND.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.5 hours before the alert went out and 80 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 00:00Z on 2016-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 687 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2016-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 463 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
687 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
512 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
463 m²/s²
0-3 km storm-relative helicity
470 m²/s²
Significant tornado parameter
1.6
Supercell composite
14.9

Open this sounding in Storm Lab

The text

As transmitted.

633 
WGUS54 KLIX 110328
FFWLIX
LAC005-007-033-037-047-063-091-093-105-117-121-MSC005-109-113-147-
110730-
/O.NEW.KLIX.FF.W.0003.160311T0328Z-160311T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ASSUMPTION PARISH IN SOUTHEASTERN LOUISIANA...
  SOUTHEASTERN IBERVILLE PARISH IN SOUTHEASTERN LOUISIANA...
  WASHINGTON PARISH IN SOUTHEASTERN LOUISIANA...
  TANGIPAHOA PARISH IN SOUTHEASTERN LOUISIANA...
  LIVINGSTON PARISH IN SOUTHEASTERN LOUISIANA...
  WESTERN ST. JAMES PARISH IN SOUTHEASTERN LOUISIANA...
  WEST BATON ROUGE PARISH IN SOUTHEASTERN LOUISIANA...
  ST. HELENA PARISH IN SOUTHEASTERN LOUISIANA...
  EAST BATON ROUGE PARISH IN SOUTHEASTERN LOUISIANA...
  EAST FELICIANA PARISH IN SOUTHEASTERN LOUISIANA...
  ASCENSION PARISH IN SOUTHEASTERN LOUISIANA...
  WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...
  NORTHWESTERN PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI...
  EASTERN AMITE COUNTY IN SOUTHERN MISSISSIPPI...
  PIKE COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 130 AM CST
    
* AT 927 PM CST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  NUMEROUS THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED
  AREA. TWO TO FOUR INCHES OF RAIN HAVE FALLEN. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BATON ROUGE...HAMMOND...ZACHARY...BAKER...MCCOMB...BOGALUSA...
  DENHAM SPRINGS...GONZALES...DONALDSONVILLE...PLAQUEMINE...PORT
  ALLEN...FRANKLINTON...CLINTON...GREENSBURG...NAPOLEONVILLE...OAK
  HILLS PLACE...AMITE...ST. GABRIEL...PONCHATOULA AND WALKER.

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

NUMEROUS ROADS ARE CLOSED IN TANGIPAHOA PARISH. AVOID TRAVEL TONIGHT
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 3133 9004 3114 9001 3107 8992 3107 8983
      3100 8984 3100 8979 3073 8963 3062 8982
      3067 8985 3071 9025 3038 9025 3029 9041
      3034 9048 3026 9063 2976 9101 3023 9137
      3070 9131 3100 9086 3134 9063

$$

24/RR
1 follow-up statement
625 
WGUS74 KLIX 110539
FFSLIX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1139 PM CST THU MAR 10 2016

LAC005-007-033-037-047-063-091-093-105-117-121-MSC005-109-113-147-
110730-
/O.CON.KLIX.FF.W.0003.000000T0000Z-160311T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASSUMPTION LA-IBERVILLE LA-WASHINGTON LA-TANGIPAHOA LA-LIVINGSTON LA-
ST. JAMES LA-WEST BATON ROUGE LA-ST. HELENA LA-EAST BATON ROUGE LA-
EAST FELICIANA LA-ASCENSION LA-WALTHALL MS-PEARL RIVER MS-AMITE MS-
PIKE MS-
1139 PM CST THU MAR 10 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM CST FOR
ASSUMPTION...SOUTHEASTERN IBERVILLE...WASHINGTON...TANGIPAHOA...
LIVINGSTON...WESTERN ST. JAMES...WEST BATON ROUGE...ST. HELENA...EAST
BATON ROUGE...EAST FELICIANA AND ASCENSION PARISHES...WALTHALL...
NORTHWESTERN PEARL RIVER...EASTERN AMITE AND PIKE COUNTIES...

AT 1136 PM CST...EMERGENCY MANAGEMENT AND THE PUBLIC REPORTED FLASH
FLOODING IN TANGIPAHOA PARISH WITH NUMEROUS ROADS CLOSED DUE TO
FLOODING. 5 TO 8 INCHES OF RAIN HAVE FALLEN. FLASH FLOODING IS
ALREADY OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BATON ROUGE...HAMMOND...ZACHARY...BAKER...MCCOMB...BOGALUSA...DENHAM
SPRINGS...GONZALES...DONALDSONVILLE...PLAQUEMINE...PORT ALLEN...
FRANKLINTON...CLINTON...GREENSBURG...NAPOLEONVILLE...OAK HILLS
PLACE...AMITE...ST. GABRIEL...PONCHATOULA AND WALKER.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 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 3133 9004 3114 9001 3107 8992 3107 8983
      3100 8984 3100 8979 3073 8963 3062 8982
      3067 8985 3071 9025 3038 9025 3029 9041
      3034 9048 3026 9063 2976 9101 3023 9137
      3070 9131 3100 9086 3134 9063

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 7:12 PM CSTRiver Flood WarningLIXAscension, Livingston6 days
Mar 10, 7:12 PM CSTRiver Flood WarningLIXTangipahoa50 hr
Mar 10, 7:12 PM CSTRiver Flood WarningLIXTangipahoa68 hr
Mar 10, 7:56 PM CSTFlash Flood WarningLIXAscension, Assumption, Livingston, Saint Helena, Saint James, Saint Tammany and 2 more2 hr
Mar 11, 1:24 AM CSTFlash Flood WarningLIXLivingston, Saint Helena, Saint Tammany, Tangipahoa, Washington3 hr
Mar 11, 1:50 AM CSTFlash Flood Warning EmergencyLIXTangipahoa2 hr
Mar 11, 2:13 AM CSTRiver Flood WarningLIXWashington4 days
Mar 11, 2:21 AM CSTSpecial Marine WarningLIX114 min
Mar 11, 3:13 AM CSTSpecial Marine WarningLIX62 min
Mar 11, 3:33 AM CSTSpecial Weather StatementLIXAssumption, Lafourche, Saint James, Terrebonne57 min
Mar 11, 4:06 AM CSTSevere Thunderstorm WarningLIXAssumption, Lafourche, Saint James, Saint John the Baptist, Terrebonne24 min
Mar 11, 4:12 AM CSTFlash Flood WarningLIXSaint Tammany, Washington4 hr
Mar 11, 4:16 AM CSTFlash Flood Warning EmergencyLIXLivingston, Tangipahoa3 hr
Mar 11, 4:28 AM CSTSevere Thunderstorm WarningLIXAscension, Jefferson, Lafourche, Livingston, Orleans, Plaquemines and 5 more32 min
Mar 11, 4:31 AM CSTSpecial Marine WarningLIX59 min
Mar 11, 4:48 AM CSTSpecial Marine WarningLIX42 min
Mar 11, 4:57 AM CSTSevere Thunderstorm WarningLIXJefferson, Livingston, Orleans, Plaquemines, Saint Bernard, Saint Charles and 3 more33 min
Mar 11, 5:04 AM CSTCoastal Flood WarningLIXSaint John the Baptist49 hr
Mar 11, 5:08 AM CSTSpecial Marine WarningLIX67 min
Mar 11, 5:15 AM CSTSpecial Weather StatementLIXPlaquemines45 min
Mar 11, 5:18 AM CSTSpecial Marine WarningLIX42 min
Mar 11, 5:21 AM CSTSevere Thunderstorm WarningLIXOrleans, Plaquemines, Saint Bernard, Saint Tammany, Tangipahoa, Washington39 min
Mar 11, 5:50 AM CSTRiver Flood WarningLIXTangipahoa50 hr
Mar 11, 6:04 AM CSTSpecial Marine WarningLIX56 min
Mar 11, 6:30 AM CSTRiver Flood WarningLIXAscension, Livingston7 days
Mar 11, 7:22 AM CSTFlash Flood Warning EmergencyLIXSaint Tammany, Tangipahoa, Washington13 hr
Mar 11, 7:37 AM CSTAreal Flood WarningLIXAscension, East Baton Rouge, Livingston9 hr
Mar 11, 7:58 AM CSTAreal Flood WarningLIXSaint Tammany3 hr
Mar 11, 8:53 AM CSTAreal Flood WarningLIXEast Baton Rouge, East Feliciana, Saint Helena3 hr
Mar 11, 12:01 PM CSTFlash Flood WarningLIXSaint Tammany8 hr
Mar 11, 12:08 PM CSTFlash Flood Warning EmergencyLIXSaint Tammany8 hr
Mar 11, 4:29 PM CSTAreal Flood WarningLIXLivingston3 hr
Mar 10, 9:02 PM CSTAreal Flood AdvisoryLIXAmite, Pike, Walthall118 min
Mar 11, 2:17 AM CSTRiver Flood WarningLIXJackson15 days
Mar 11, 2:19 AM CSTRiver Flood WarningLIXJackson5 days
Mar 11, 5:58 AM CSTSpecial Weather StatementLIXHancock, Pearl River62 min
Mar 11, 6:54 AM CSTSpecial Weather StatementLIXHarrison36 min
Mar 11, 7:30 AM CSTAreal Flood AdvisoryLIXHancock, Harrison, Jackson3 hr
Mar 11, 7:44 AM CSTFlash Flood WarningLIXWalthall8 hr
Mar 11, 7:59 AM CSTFlash Flood WarningLIXPike8 hr
Mar 11, 8:40 AM CSTFlash Flood WarningLIXHarrison, Jackson3 hr
Mar 11, 9:09 AM CSTRiver Flood WarningLIXHarrison71 hr
Mar 11, 9:15 AM CSTRiver Flood WarningLIXHarrison57 hr

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.