Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 65, 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, 11:40 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, 11:40 AM CDT (16:40 UTC)
Expired: Aug 13, 2016, 2:30 PM 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, 4.7 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

705 
WGUS54 KLIX 131640
FFWLIX
LAC033-063-131930-
/O.NEW.KLIX.FF.W.0065.160813T1640Z-160813T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1140 AM CDT SAT AUG 13 2016

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

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 230 PM CDT

* AT 1136 AM CDT...WIDESPREAD SIGNIFICANT FLOODING IS OCCURRING.
  MANY ROADWAYS ARE INUNDATED AND IMPASSIBLE. SOME ROADS MAY BE
  WASHED OUT. 

  THIS IS A FLASH FLOOD EMERGENCY FOR WATSON...DENHAM
SPRINGS...GREENWELL SPRINGS AND SURROUNDING AREAS INCLUDING THE
INTERSTATE 12 CORRIDOR BETWEEN WALKER AND SHERWOOD FOREST. 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.

&&

LAT...LON 3065 9077 3033 9083 3033 9085 3034 9085
      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.

Issued	Product	Office	Counties	Lasted
Aug 12, 10:44 PM CDT	Areal Flood Advisory	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Saint Helena and 1 more	4 hr
Aug 13, 2:20 AM CDT	Flash Flood Warning	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Feliciana	6 hr
Aug 13, 2:28 AM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge	6 hr
Aug 13, 4:39 AM CDT	Special Weather Statement	LIX	Saint Tammany	66 min
Aug 13, 4:46 AM CDT	River Flood Warning	LIX	East Feliciana	30 hr
Aug 13, 4:46 AM CDT	River Flood Warning	LIX	East Baton Rouge	64 hr
Aug 13, 4:47 AM CDT	Flash Flood Warning Emergency	LIX	Livingston, Saint Helena, Tangipahoa	3 hr
Aug 13, 8:14 AM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 3 more	6 hr
Aug 13, 8:48 AM CDT	Flash Flood Warning Emergency	LIX	East Baton Rouge, Livingston	3 hr
Aug 13, 8:52 AM CDT	River Flood Warning	LIX	Ascension	7 days
Aug 13, 2:18 PM CDT	Flash Flood Warning	LIX	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 5 more	8 hr
Aug 13, 2:35 PM CDT	Flash Flood Warning Emergency	LIX	East Baton Rouge, Livingston	6 hr
Aug 13, 4:07 PM CDT	River Flood Warning	LIX	Ascension, Livingston	9 days

Nearby

Flash Flood Warnings in Louisiana, 2016 Every 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.