Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 30, NWS New Orleans, LA

June 10, 2012Hancock County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Jun 10, 2012, 9:38 AM CDT for Hancock County, Mississippi. It was in force for 112 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 10, 2012, 9:38 AM CDT (14:38 UTC)
Expired: Jun 10, 2012, 11:30 AM CDT
In force: 112 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

County Hancock County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.6 hours before the alert went out and 26 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: 1831 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 451 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

571 
WGUS54 KLIX 101438
FFWLIX
MSC045-101630-
/O.NEW.KLIX.FF.W.0030.120610T1438Z-120610T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
938 AM CDT SUN JUN 10 2012

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HANCOCK COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITY OF DIAMONDHEAD...

* UNTIL 1130 AM CDT

* AT 931 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAINFALL MOVING ACROSS HANCOCK
  COUNTY. RADAR ESTIMATES INDICATE THAT UP TO TWO INCHES OF RAIN
  HAVE FALLEN OVER PORTIONS OF THE COUNTY IN THE LAST HOUR.
  ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES OF RAIN WILL BE
  POSSIBLE THROUGH THE MORNING.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KILN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3063 8934 3038 8936 3020 8959 3029 8964
      3034 8963 3038 8967 3041 8969 3044 8968
      3046 8965 3051 8963 3052 8955 3062 8954

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 8:47 AM CDT	Flash Flood Warning	LIX	Pearl River	118 min

Nearby

Flash Flood Warnings in Mississippi, 2012 Every flash flood warning in 2012

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.