Alert archive / Mississippi / Flash Flood Warnings in 2016

Flash Flood Warning 9, NWS New Orleans, LA

March 11, 2016Walthall County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Mar 11, 2016, 7:44 AM CST for Walthall County, Mississippi. It was in force for 8 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 11, 2016, 7:44 AM CST (13:44 UTC)
Expired
Mar 11, 2016, 3:45 PM CST
In force
8 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

County Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.7 hours before the alert went out and 109 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 2016-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1067 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 12:00Z on 2016-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 320 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
1067 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
479 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
320 m²/s²
0-3 km storm-relative helicity
277 m²/s²
Significant tornado parameter
1.4
Supercell composite
10.4

Open this sounding in Storm Lab

The text

As transmitted.

767 
WGUS54 KLIX 111344
FFWLIX
MSC147-111645-
/O.NEW.KLIX.FF.W.0009.160311T1344Z-160311T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
744 AM CST FRI MAR 11 2016

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 1045 AM CST

* AT 743 AM CST...EMERGENCY MANAGEMENT REPORTED FLASH FLOODING ACROSS
  THE WARNED AREA. RAINFALL AMOUNTS OF 6 TO 13 INCHES OF RAIN HAVE
  FALLEN. FLASH FLOODING IS ALREADY OCCURRING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TYLERTOWN...DEXTER AND SALEM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3133 9008 3134 9004 3118 9003 3117 9001
      3114 9001 3113 8994 3107 8992 3108 8984
      3100 8984 3100 9026 3135 9026 3135 9011

$$

CAB
1 follow-up statement
883 
WGUS54 KLIX 111637
FFWLIX
MSC147-112145-
/O.EXT.KLIX.FF.W.0009.000000T0000Z-160311T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1037 AM CST FRI MAR 11 2016

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  WALTHALL COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 345 PM CST

* AT 1029 AM CST...EMERGENCY MANAGEMENT REPORTED FLOODING ACROSS THE
  WARNED AREA. RADAR ESTIMATED BETWEEN 4 TO 8 INCHES OF RAIN HAVE
  FALLEN. OBSERVED HIGHER AMOUNTS IS LIKELY. FLOODING IS OCCURRING
  AND WILL REMAIN HAZARDOUS ACROSS WALTHALL COUNTY THROUGH THIS
  AFTERNOON. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TYLERTOWN...DEXTER AND SALEM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

&&

LAT...LON 3133 9008 3134 9004 3118 9003 3117 9001
      3114 9001 3113 8994 3107 8992 3108 8984
      3100 8984 3100 9026 3135 9026 3135 9011

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 7:56 PM CSTFlash Flood WarningLIXPearl River, Walthall2 hr
Mar 10, 9:02 PM CSTAreal Flood AdvisoryLIXAmite, Pike, Walthall118 min
Mar 10, 9:28 PM CSTFlash Flood WarningLIXAmite, Pearl River, Pike, Walthall4 hr
Mar 11, 1:24 AM CSTFlash Flood WarningLIXAmite, Pearl River, Pike, Walthall3 hr
Mar 11, 2:17 AM CSTRiver Flood WarningLIXJackson15 days
Mar 11, 2:19 AM CSTRiver Flood WarningLIXJackson5 days
Mar 11, 4:12 AM CSTFlash Flood WarningLIXPearl River, Pike, Walthall4 hr
Mar 11, 5:04 AM CSTCoastal Flood WarningLIX49 hr
Mar 11, 5:21 AM CSTSevere Thunderstorm WarningLIXHancock, Pearl River39 min
Mar 11, 5:58 AM CSTSpecial Weather StatementLIXHancock, Pearl River62 min
Mar 11, 6:54 AM CSTSpecial Weather StatementLIXHarrison36 min
Mar 11, 7:22 AM CSTFlash Flood Warning EmergencyLIXPearl River13 hr
Mar 11, 7:30 AM CSTAreal Flood AdvisoryLIXHancock, Harrison, Jackson3 hr
Mar 11, 7:58 AM CSTAreal Flood WarningLIXHancock, Pearl River3 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 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.