Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 29, NWS New Orleans, LA

June 10, 2012Pearl River County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Jun 10, 2012, 8:47 AM CDT for Pearl River County, Mississippi. It was in force for 118 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 10, 2012, 8:47 AM CDT (13:47 UTC)
Expired: Jun 10, 2012, 10:45 AM CDT
In force: 118 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

County Pearl River County, MS

What was reported inside it

Time	Report	Where	Remark
Jun 10, 10:34 AM CDT	FLASH FLOOD	3 S Picayune, MS	LOCAL LAW ENFORCEMENT IN THE TOWN OF NICHOLSON REPORTED FLOODED AND BARRICADED INTERSECTION OF OLIVER DAVIS ROAD AND SECTION.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.8 hours before the alert went out and 45 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.

318 
WGUS54 KLIX 101347
FFWLIX
MSC109-101545-
/O.NEW.KLIX.FF.W.0029.120610T1347Z-120610T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PEARL RIVER COUNTY IN SOUTHERN MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...POPLARVILLE...PICAYUNE...

* UNTIL 1045 AM CDT

* AT 841 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAINFALL MOVING ACROSS PEARL RIVER
  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 MID MORNING.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MCNEIL...
  CROSSROADS...PICAYUNE...AND POPLARVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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 3085 8940 3065 8952 3065 8955 3051 8955
      3050 8964 3046 8965 3046 8966 3056 8980
      3070 8983 3092 8973

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 9:38 AM CDT	Flash Flood Warning	LIX	Hancock	112 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.