Alert archive / Mississippi / Flash Flood Warnings in 2004

Flash Flood Warning 3, NWS Mobile, AL

May 12, 2004Perry County, Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at May 12, 2004, 5:58 PM CDT for Perry County, Stone County, Mississippi. It was in force for 4 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: May 12, 2004, 5:58 PM CDT (22:58 UTC)
Expired: May 12, 2004, 10:00 PM CDT
In force: 4 hr
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

Counties Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 89 km from the middle of the area, began a volume at 23:00 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, 11.0 hours before the alert went out and 108 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: 1125 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 575 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 122259
FFWMOB
MSC111-131-130300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
558 PM CDT WED MAY 12 2004

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  STONE COUNTY IN SOUTHEAST MISSISSIPPI
  PERRY COUNTY IN SOUTHEAST MISSISSIPPI

* UNTIL 1000 PM CDT

* AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN CONTINUING TO OCCUR ACROSS PERRY AND STONE
  COUNTIES IN SOUTHEAST MISSISSIPPI.  RADAR RAINFALL ESTIMATES
  INDICATE THAT A SWATH OF 3 TO 5 INCHES OF RAIN HAS FALLEN ACROSS
  WESTERN STONE COUNTY AND SOUTHERN AND CENTRAL PERRY COUNTY SINCE
  ABOUT NOON.  WIDESPREAD SHOWERS AND THUNDERSTORMS WILL CONTINUE TO
  MOVE ACROSS THE AREA THROUGH THE EVENING HOURS...CREATING A
  DANGEROUS FLASH FLOODING SITUATION.

WATER COVERED ROADWAYS HAVE BEEN REPORTED IN THE TOWN OF 
PERKINSTON...AND MANY OTHER WATER COVERED ROADWAYS CAN BE EXPECTED 
ACROSS THE PORTIONS OF THE COUNTIES WHERE THE HEAVY RAINFALL HAS 
OCCURRED.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS...STREETS AND UNDERPASSES...AS WELL AS 
OTHER POOR DRAINAGE AND LOW LYING AREAS.

RESIDENTS LIVING IN FLOOD PRONE AREAS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. REMEMBER...IT ONLY
TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

LAT...LON 3136 8881 3080 8899 3069 8931 3088 8936
          3093 8914 3134 8904

$$

1 follow-up statement

000 
WGUS74 KMOB 130217
FFSMOB
MSC039-111-131-130300-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
915 PM CDT WED MAY 12 2004

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN SOUTHEAST MISSISSIPPI...GEORGE...STONE AND PERRY COUNTIES.

AT 915 PM CDT WEATHER SERVICE RADAR INDICATED THAT THE HEAVY RAIN 
PRODUCING THUNDERSTORMS HAVE MOVED EAST OF THE AREA AND WEAKENED... 
AND THEREFORE ENDING THE IMMEDIATE THREAT OF FLASH FLOODING. 

ALTHOUGH THE HEAVY RAIN HAS ENDED...SOME MINOR PONDING OF WATER OVER 
FLOOD PRONE AREAS AND ROADWAYS COULD CONTINUE TO POSE A HAZARD TO 
TRAVEL FOR THE NEXT COUPLE OF HOURS. 

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODED AREAS. DO NOT DRIVE INTO WATER COVERED ROADWAYS 
OR UNDERPASSES. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW A SAFE 
CROSSING. REMEMBER...TURN AROUND...DONT DROWN. 

$$

Nearby

Flash Flood Warnings in Mississippi, 2004 Every flash flood warning in 2004

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.