Alert archive / Mississippi / Flash Flood Warnings in 2015

Flash Flood Warning 10, NWS Mobile, AL

May 16, 2015George County, Mississippi

NWS Mobile, AL issued this flash flood warning at May 16, 2015, 4:56 PM CDT for George County, Mississippi. It was in force for 9 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 16, 2015, 4:56 PM CDT (21:56 UTC)
Expired
May 17, 2015, 2:00 AM CDT
In force
9 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County George County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.9 hours before the alert went out and 131 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 2015-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1551 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 2015-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.1939Sfc1 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
1551 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

061 
WGUS54 KMOB 162156
FFWMOB
MSC039-170400-
/O.NEW.KMOB.FF.W.0010.150516T2156Z-150517T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
456 PM CDT SAT MAY 16 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN GEORGE COUNTY IN SOUTHEASTERN MISSISSIPPI...

* UNTIL 1100 PM CDT SATURDAY

* AT 455 PM CDT...RADAR ESTIMATES SHOW UP TO 6 INCHES OF RAINFALL 
  HAS OCCURRED OVER THE PAST 3 HOURS WITH ADDITIONAL HEAVY RAINS 
  EXPECTED. THIS WILL LIKELY CAUSE FLASH FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  DEAN LANDING...        HOWELL...              MOVELLA...
  WATERS LANDING...      AGRICOLA...            

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

IF YOU ARE IN DANGER FROM THE FLOOD WATERS AND NEED RESCUE ASSISTANCE
CALL 911.  TO REPORT FLOODING TO THE NATIONAL WEATHER SERVICE CALL
(800) 284-9059.

&&

LAT...LON 3084 8852 3085 8842 3074 8841 3074 8858

$$
1 follow-up statement
339 
WGUS54 KMOB 170345
FFWMOB
MSC039-170700-
/O.EXT.KMOB.FF.W.0010.000000T0000Z-150517T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1045 PM CDT SAT MAY 16 2015

THE NATIONAL WEATHER SERVICE IN MOBILE HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN GEORGE COUNTY IN SOUTHEASTERN MISSISSIPPI...

* UNTIL 200 AM CDT

* AT 1042 PM CDT...HEAVY RAINFALL IS TAPERING OFF OVER THE WARNED 
  AREA...BUT RAINFALL AMOUNTS AROUND 2 INCHES OVER THE PAST 1 TO 2 
  HOURS HAS FALLEN ON SATURATED GROUND.  THIS WILL MAINTAIN A HIGH 
  RISK OF FLASH FLOODING IN THE WARNED AREA UNTIL THE HEAVY RAINS 
  DRAIN OFF.

* LOCATIONS IMPACTED INCLUDE...
  DEAN LANDING...        HOWELL...              MOVELLA...
  WATERS LANDING...      AGRICOLA...            

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

IF YOU ARE IN DANGER FROM THE FLOOD WATERS AND NEED RESCUE ASSISTANCE
CALL 911.  TO REPORT FLOODING TO THE NATIONAL WEATHER SERVICE CALL
(800) 284-9059.

&&

LAT...LON 3084 8852 3085 8842 3074 8841 3074 8858

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 16, 5:08 AM CDTAreal Flood AdvisoryMOBStone112 min
May 16, 5:53 AM CDTSpecial Weather StatementMOBGeorge22 min
May 16, 6:21 AM CDTSpecial Weather StatementMOBGeorge39 min
May 16, 6:46 AM CDTAreal Flood AdvisoryMOBPerry119 min
May 16, 9:09 AM CDTAreal Flood AdvisoryMOBGeorge, Greene, Perry, Stone3 hr
May 16, 4:25 PM CDTAreal Flood AdvisoryMOBGeorge, Greene3 hr
May 16, 6:56 PM CDTSevere Thunderstorm WarningMOBStone42 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.