Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 2, NWS New Orleans, LA

March 10, 20168 parishes in Louisiana; Pearl River County, Walthall County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Mar 10, 2016, 7:56 PM CST for 8 parishes in Louisiana; Pearl River County, Walthall County, Mississippi. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 10, 2016, 7:56 PM CST (01:56 UTC)
Expired
Mar 10, 2016, 10:00 PM CST
In force
2 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties Ascension Parish, LA, Assumption Parish, LA, Livingston Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Pearl River County, MS, Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.9 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 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.

575 
WGUS54 KLIX 110156
FFWLIX
LAC005-007-063-091-093-103-105-117-MSC109-147-110400-
/O.NEW.KLIX.FF.W.0002.160311T0156Z-160311T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WASHINGTON PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHWESTERN ST. TAMMANY PARISH IN SOUTHEASTERN LOUISIANA...
  TANGIPAHOA PARISH IN SOUTHEASTERN LOUISIANA...
  CENTRAL LIVINGSTON PARISH IN SOUTHEASTERN LOUISIANA...
  NORTHEASTERN ASSUMPTION PARISH IN SOUTHEASTERN LOUISIANA...
  WESTERN ST. JAMES PARISH IN SOUTHEASTERN LOUISIANA...
  SOUTHEASTERN ST. HELENA PARISH IN SOUTHEASTERN LOUISIANA...
  CENTRAL ASCENSION PARISH IN SOUTHEASTERN LOUISIANA...
  SOUTHEASTERN WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...
  WEST CENTRAL PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 1000 PM CST
    
* AT 754 PM CST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES CONTINUED
  TO INDICATE THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED
  AREA. FLASH FLOODING HAS BEEN REPORTED IN SEVERAL
  LOCATIONS WITHIN THE LARGE WARNED AREA. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BOGALUSA...GONZALES...DONALDSONVILLE...FRANKLINTON...
  NAPOLEONVILLE...AMITE...AMITE CITY...KENTWOOD...LIVINGSTON...
  INDEPENDENCE...VARNADO...SORRENTO...ROSELAND...FRENCH SETTLEMENT...
  ALBANY...PORT VINCENT...FOLSOM...MONTPELIER...CROSSROADS AND ENON.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

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 3113 9000 3113 8994 3107 8992 3100 8983
      3073 8963 3053 9056 3019 9068 2977 9101
      2980 9109 2983 9111 3042 9087 3099 9055
      3100 9026 3118 9003

$$

24/RR
1 follow-up statement
419 
WGUS74 KLIX 110330
FFSLIX

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

LAC005-007-063-091-093-103-105-117-MSC109-147-110339-
/O.CAN.KLIX.FF.W.0002.000000T0000Z-160311T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON LA-ST. TAMMANY LA-TANGIPAHOA LA-LIVINGSTON LA-
ASSUMPTION LA-ST. JAMES LA-ST. HELENA LA-ASCENSION LA-WALTHALL MS-
PEARL RIVER MS-
930 PM CST THU MAR 10 2016

...THE FLASH FLOOD WARNING FOR WASHINGTON...NORTHWESTERN ST.
TAMMANY...TANGIPAHOA...CENTRAL LIVINGSTON...NORTHEASTERN
ASSUMPTION...WESTERN ST. JAMES...SOUTHEASTERN ST. HELENA AND CENTRAL
ASCENSION PARISHES...SOUTHEASTERN WALTHALL AND WEST CENTRAL PEARL
RIVER COUNTIES IS CANCELLED...

THIS WARNING HAS BEEN REPLACED WITH A NEW FLASH FLOOD WARNING NOW IN
EFFECT UNTIL 130 AM CST.

LAT...LON 3113 9000 3113 8994 3107 8992 3100 8983
      3073 8963 3053 9056 3019 9068 2977 9101
      2980 9109 2983 9111 3042 9087 3099 9055
      3100 9026 3118 9003

$$

24/RR

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, 9:28 PM CSTFlash Flood WarningLIXAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 5 more4 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; the sounding from the Mesonet's radiosonde archive.