Alert archive / Louisiana / Flash Flood Warnings in 2016
Flash Flood Warning 72, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 20, 2016, 3:58 PM CDT for Ascension Parish, Iberville 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 20, 2016, 3:58 PM CDT (20:58 UTC)
- Expired
- Aug 20, 2016, 7:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ascension Parish, LA, Iberville Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 9.0 hours before the alert went out and 126 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.
- Mixed-layer CAPE
- 1891 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -53 m²/s²
- 0-3 km storm-relative helicity
- -34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
573
WGUS54 KLIX 202058
FFWLIX
LAC005-047-210000-
/O.NEW.KLIX.FF.W.0072.160820T2058Z-160821T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
358 PM CDT SAT AUG 20 2016
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN IBERVILLE PARISH IN SOUTHEASTERN LOUISIANA...
ASCENSION PARISH IN SOUTHEASTERN LOUISIANA...
* UNTIL 700 PM CDT
* AT 357 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. AROUND THREE INCHES OF RAIN
HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY
AND IS OVER AREAS THAT RECENTLY HAD SIGNIFICANT FLOODING.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
GONZALES...DONALDSONVILLE...ST. GABRIEL...SORRENTO...GEISMER AND
PRAIRIEVILLE.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 3032 9106 3032 9103 3034 9101 3034 9086
3033 9085 3013 9084 3011 9091 3007 9096
3007 9099 3008 9101 3007 9106 3008 9108
3008 9109 3006 9109 3006 9116
$$
24/RR1 follow-up statement
651
WGUS74 KLIX 202244
FFSLIX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
544 PM CDT SAT AUG 20 2016
LAC005-047-202253-
/O.CAN.KLIX.FF.W.0072.000000T0000Z-160821T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IBERVILLE LA-ASCENSION LA-
544 PM CDT SAT AUG 20 2016
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN IBERVILLE AND ASCENSION
PARISHES IS CANCELLED...
THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT.
A FLOOD ADVISORY REMAINS IN EFFECT THROUGH 3 PM CDT MONDAY.
LAT...LON 3032 9106 3032 9103 3034 9101 3034 9086
3033 9085 3013 9084 3011 9091 3007 9096
3007 9099 3008 9101 3007 9106 3008 9108
3008 9109 3006 9109 3006 9116
$$
24/RRThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 2:59 PM CDT | Areal Flood Advisory | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Saint James, Saint John the Baptist | 3 days |
| Aug 20, 3:23 PM CDT | Special Weather Statement | LIX | Ascension, East Baton Rouge, Livingston, Saint Helena | 67 min |
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.