Alert archive / Mississippi / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS New Orleans, LA

April 15, 2015Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Apr 15, 2015, 2:06 PM CDT for Harrison County, Jackson County, Mississippi. 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
Apr 15, 2015, 2:06 PM CDT (19:06 UTC)
Expired
Apr 15, 2015, 5:00 PM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 55 km from the middle of the area, began a volume at 19:08 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 95 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 2015-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 455 joules per kilogram.LCLLFCEL10008507005003002001001 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 2015-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
455 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

493 
WGUS54 KLIX 151906
FFWLIX
MSC047-059-152200-
/O.NEW.KLIX.FF.W.0013.150415T1906Z-150415T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
206 PM CDT WED APR 15 2015

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN HARRISON COUNTY IN SOUTHEASTERN MISSISSIPPI...
  JACKSON COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 500 PM CDT
    
* AT 204 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM NORTH OF 
  BILOXI PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE 
  INCHES OF RAIN HAS ALREADY FALLEN AND EMERGENCY MANAGEMENT HAS 
  RECEIVED SEVERAL REPORTS OF FLASH FLOODING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BILOXI...OCEAN SPRINGS...MOSS POINT...ST. MARTIN...ESCATAWPA...
  GAUTIER...D'IBERVILLE...VANCLEAVE...HURLEY...HELENA...GULF PARK
  ESTATES...LATIMER...BIG POINT...WADE...GULF HILLS AND HICKORY
  HILLS.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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 3032 8850 3034 8851 3034 8857 3037 8859
      3035 8874 3043 8885 3042 8889 3039 8886
      3041 8893 3041 8889 3043 8891 3043 8897
      3068 8910 3069 8841 3041 8840

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:18 AM CDTDense Fog AdvisoryLIXAmite, Pearl River, Pike, Walthall, Wilkinson102 min
Apr 15, 12:20 PM CDTSpecial Weather StatementLIXHancock40 min
Apr 15, 1:04 PM CDTFlash Flood WarningLIXHancock, Harrison3 hr
Apr 15, 5:02 PM CDTSevere Thunderstorm WarningLIXHancock, Pearl River29 min
Apr 15, 5:16 PM CDTSevere Thunderstorm WarningLIXAmite, Pike44 min
Apr 15, 5:59 PM CDTSevere Thunderstorm WarningLIXPike, Walthall46 min
Apr 15, 6:44 PM CDTSevere Thunderstorm WarningLIXPike, Walthall17 min

Nearby

Flash Flood Warnings in Mississippi, 2015Every flash flood warning in 2015

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.