Alert archive / Louisiana / Areal Flood Warnings in 2016

Areal Flood Warning 2, NWS Lake Charles, LA

March 11, 20164 parishes in Louisiana; 4 counties in Texas

NWS Lake Charles, LA issued this areal flood warning at Mar 11, 2016, 12:21 PM CST for 4 parishes in Louisiana; 4 counties in Texas. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 11, 2016, 12:21 PM CST (18:21 UTC)
Expired
Mar 11, 2016, 9:15 PM CST
In force
9 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Avoyelles Parish, LA, Beauregard Parish, LA, Rapides Parish, LA, Vernon Parish, LA, Hardin County, TX, Jasper County, TX, Newton County, TX, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 58 km from the middle of the area, began a volume at 18:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 6.4 hours before the alert went out and 185 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, Shreveport, LA at 12:00Z on 2016-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Shreveport, LA at 12:00Z on 2016-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.1939587897Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this areal flood warning went out at Mar 11, 11:34 AM CST, 47 minutes earlier.

Area forecast discussion, Mar 11, 11:34 AM CST, 47 minutes before
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Hazardous weather outlook, Mar 11, 4:58 AM CST, 7 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
458 AM CST FRI MAR 11 2016

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
121200-
VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE-ST. LANDRY-
CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-UPPER ST. MARTIN-
VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-WEST CAMERON-
EAST CAMERON-TYLER-HARDIN-JEFFERSON-ORANGE-NORTHERN JASPER-
NORTHERN NEWTON-SOUTHERN JASPER-SOUTHERN NEWTON-
458 AM CST FRI MAR 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
LOUISIANA...SOUTH CENTRAL LOUISIANA...SOUTHWEST LOUISIANA...WEST
CENTRAL LOUISIANA...EAST CENTRAL TEXAS AND SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
A SIGNIFICANT STORM SYSTEM CONTINUES TO AFFECT THE REGION WITH
ONGOING FLOODING ACROSS SOUTHEAST TEXAS AND WESTERN LOUISIANA...AND
THE POTENTIAL FOR ADDITIONAL FLOODING TO THE REST OF CENTRAL AND
SOUTHERN LOUISIANA. A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH
THIS AFTERNOON. THE EXCESSIVE RAINFALL OF 8 TO 12 INCHES ACROSS
EAST TEXAS...WESTERN AND NORTH LOUISIANA HAS RESULTED IN MODERATE
TO MAJOR FLOODING ACROSS MOST RIVER SITES ACROSS SOUTHEAST TEXAS
AND SOUTHWEST LOUISIANA. NOTEWORTHY IS THE RECORD POOL LEVELS AND
RELEASES AT TOLEDO BEND...WITH RECORD FLOODING IMMEDIATELY DOWNSTREAM
THE SABINE RIVER AT BURKEVILLE. MAJOR FLOODING IS ONGOING AND WILL
CONTINUE FURTHER DOWN THE SABINE AT BON WIER...AND EXPECTED TO
BREAK THE RECORD LEVEL AT DEWEYVILLE BY EARLY NEXT WEEK.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
MUCH IMPROVED WEATHER IS EXPECTED DURING THE DAY SATURDAY AS THE
ENTIRE STORM SYSTEM LIFTS NORTHEAST OF THE REGION. NO PRECIPITATION
IS EXPECTED SUNDAY THROUGH TUESDAY. ANOTHER UPPER LEVEL STORM
SYSTEM WITH A POSSIBLE FRONTAL SURFACE LOW OVER THE NORTHWEST GULF
WILL INCREASE SHOWER AND THUNDERSTORM CHANGES BY LATE WEDNESDAY
INTO THURSDAY OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION REQUESTED FOR TODAY.

GMZ430-432-435-450-452-455-470-472-475-121200-
SABINE LAKE-CALCASIEU LAKE-VERMILION BAY-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA OUT 20 NM-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA OUT 20 NM-
WATERS FROM CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM-
WATERS FROM  INTRACOASTAL CITY TO CAMERON LA FROM 20 TO 60 NM-
WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM
20 TO 60 NM-
458 AM CST FRI MAR 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST
GULF OF MEXICO.

.DAY ONE...TODAY AND TONIGHT
SLOWLY SUBSIDING SEAS WILL CONTINUE AS WINDS DIMINISH TODAY.
THE CHANCES OF SHOWERS AND THUNDERSTORMS WILL CONTINUE TODAY AND
TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
MUCH IMPROVED WEATHER IS EXPECTED DURING THE DAY SATURDAY AS THE
ENTIRE STORM SYSTEM LIFTS NORTHEAST OF THE REGION. NO PRECIPITATION
IS EXPECTED SUNDAY THROUGH TUESDAY. ANOTHER UPPER LEVEL STORM
SYSTEM WITH A POSSIBLE FRONTAL SURFACE LOW OVER THE NORTHWEST GULF
WILL INCREASE SHOWER AND THUNDERSTORM CHANGES BY LATE WEDNESDAY
INTO THURSDAY OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION REQUESTED FOR TODAY.

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 10, 10:11 PM CSTAreal Flood AdvisoryLCHIberia, Saint Martin, St. Mary3 hr
Mar 11, 12:18 AM CSTSpecial Marine WarningLCH87 min
Mar 11, 1:44 AM CSTSpecial Marine WarningLCH91 min
Mar 11, 2:00 AM CSTSpecial Weather StatementLCHAcadia, Jefferson Davis, Lafayette, Vermilion60 min
Mar 11, 2:40 AM CSTMarine Dense Fog AdvisoryLCH84 min
Mar 11, 2:40 AM CSTSmall Craft Advisory for Hazardous SeasLCH12 hr
Mar 11, 2:49 AM CSTSpecial Weather StatementLCHAcadia, Lafayette, Saint Landry, Saint Martin56 min
Mar 11, 2:55 AM CSTSpecial Marine WarningLCH65 min
Mar 11, 10:35 AM CSTRiver Flood WarningLCHAvoyelles, Rapides17 days

Nearby

Areal Flood Warnings in Louisiana, 2016Areal Flood Warnings in Texas, 2016Every areal 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; radar from the NEXRAD Level II archive.