Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 64, NWS New Orleans, LA

August 13, 2016East Baton Rouge Parish, Livingston Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Aug 13, 2016, 8:48 AM CDT for East Baton Rouge Parish, Livingston Parish, Louisiana. It was in force for 3 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
Aug 13, 2016, 8:48 AM CDT (13:48 UTC)
Expired
Aug 13, 2016, 11:45 AM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Emergency
Flash flood emergency
Flood severity
None

Counties East Baton Rouge Parish, LA, Livingston Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.8 hours before the alert went out and 116 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 2016-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2016-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -120 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1240 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-120 m²/s²
0-3 km storm-relative helicity
-74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

988 
WGUS54 KLIX 131348
FFWLIX
LAC033-063-131645-
/O.NEW.KLIX.FF.W.0064.160813T1348Z-160813T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
848 AM CDT SAT AUG 13 2016

...FLASH FLOOD EMERGENCY FOR WATSON...GREENWELL SPRINGS...DENHAM
SPRINGS...

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN LIVINGSTON PARISH IN SOUTHEASTERN LOUISIANA...
  CENTRAL EAST BATON ROUGE PARISH IN SOUTHEASTERN LOUISIANA...

* UNTIL 1145 AM CDT

* AT 843 AM CDT...EMERGENCY MANAGEMENT OFFICIALS ARE REQUESTING
  IMMEDIATE EVACUATIONS IN WATSON. SIGNIFICANT FLASH FLOODING IS
  ALREADY OCCURRING. WATER RESCUES ARE ALSO TAKING PLACE IN AMITE.
  SIGNIFICANT AND WIDESPREAD FLOODING IS OCCURRING IN DENHAM
  SPRINGS. 

  THIS IS A FLASH FLOOD EMERGENCY FOR WATSON. THIS IS A PARTICULARLY
DANGEROUS SITUATION. SEEK HIGHER GROUND NOW! 

* SOME LOCATIONS THAT WILL EXPERIENCE LIFE-THREATENING FLOODING INCLUDE...
  DENHAM SPRINGS...WALKER...PORT VINCENT...GREENWELL SPRING...
  SHENANDOAH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. THIS IS AN EXTREMELY DANGEROUS AND
LIFE-THREATENING SITUATION. DO NOT ATTEMPT TO TRAVEL UNLESS YOU ARE
FLEEING AN AREA SUBJECT TO FLOODING OR UNDER AN EVACUATION ORDER.

&&

LAT...LON 3065 9077 3033 9083 3033 9086 3034 9086
      3034 9087 3035 9089 3034 9091 3035 9092
      3034 9093 3035 9100 3065 9111

$$

24/RR
1 follow-up statement
834 
WGUS74 KLIX 131457
FFSLIX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
957 AM CDT SAT AUG 13 2016

LAC033-063-131645-
/O.CON.KLIX.FF.W.0064.000000T0000Z-160813T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LIVINGSTON LA-EAST BATON ROUGE LA-
957 AM CDT SAT AUG 13 2016

...FLASH FLOOD EMERGENCY CONTINUES FOR WATSON...GREENWELL
SPRINGS...DENHAM SPRINGS AND INTERSTATE 12 BETWEEN WALKER AND
SHERWOOD FOREST...

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT FOR
NORTHWESTERN LIVINGSTON AND CENTRAL EAST BATON ROUGE PARISHES...

AT 953 AM CDT...LIFE THREATENING FLOODING IS OCCURRING OVER A LARGE
AREA. DO NOT DRIVE IN THIS AREA UNLESS YOU ARE EVACUATING FROM FLOOD
WATERS. 

THIS IS A PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. THIS IS AN EXTREMELY DANGEROUS AND
LIFE-THREATENING SITUATION. DO NOT ATTEMPT TO TRAVEL UNLESS YOU ARE
FLEEING AN AREA SUBJECT TO FLOODING OR UNDER AN EVACUATION ORDER.

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST
FLOOD DEATHS OCCUR IN VEHICLES. DO NOT TRAVEL THROUGH THIS AREA
UNLESS IT IS ABSOLUTELY NECESSARY TO SAVE LIFE!

&&

LAT...LON 3065 9077 3033 9083 3033 9086 3034 9086
      3034 9087 3035 9089 3034 9091 3035 9092
      3034 9093 3035 9100 3065 9111

$$

24/RR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 10:44 PM CDTAreal Flood AdvisoryLIXAscension, East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena and 1 more4 hr
Aug 13, 2:20 AM CDTFlash Flood WarningLIXEast Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Feliciana6 hr
Aug 13, 2:28 AM CDTFlash Flood WarningLIXAscension, East Baton Rouge, Iberville, Livingston, West Baton Rouge6 hr
Aug 13, 4:39 AM CDTSpecial Weather StatementLIXSaint Tammany66 min
Aug 13, 4:46 AM CDTRiver Flood WarningLIXEast Feliciana30 hr
Aug 13, 4:46 AM CDTRiver Flood WarningLIXEast Baton Rouge64 hr
Aug 13, 4:47 AM CDTFlash Flood Warning EmergencyLIXLivingston, Saint Helena, Tangipahoa3 hr
Aug 13, 8:14 AM CDTFlash Flood WarningLIXAscension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 3 more6 hr
Aug 13, 8:52 AM CDTRiver Flood WarningLIXAscension7 days
Aug 13, 11:40 AM CDTFlash Flood Warning EmergencyLIXEast Baton Rouge, Livingston3 hr
Aug 13, 2:18 PM CDTFlash Flood WarningLIXAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 5 more8 hr
Aug 13, 2:35 PM CDTFlash Flood Warning EmergencyLIXEast Baton Rouge, Livingston6 hr
Aug 13, 4:07 PM CDTRiver Flood WarningLIXAscension, Livingston9 days

Nearby

Flash Flood Warnings in Louisiana, 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.