Alert archive / Mississippi / Flash Flood Warnings in 2016

Flash Flood Warning 33, NWS Mobile, AL

August 11, 2016Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at Aug 11, 2016, 1:36 PM CDT for Stone County, Mississippi. It was in force for 6 hr. 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
Aug 11, 2016, 1:36 PM CDT (18:36 UTC)
Expired
Aug 11, 2016, 7:30 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Stone County, MS

The radar

The Mobile radar (KMOB), 88 km from the middle of the area, began a volume at 18:39 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.

What was reported inside it

TimeReportWhereRemark
Aug 11, 2:19 PM CDTFLASH FLOODE Wiggins, MSCOUNTY EM REPORTS MULTIPLE ROADS IN STONE COUNTY NEAR AND EAST OF WIGGINS ARE UNDERWATER.

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, 6.6 hours before the alert went out and 85 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 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1058 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 2016-08-11The 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
1058 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
681 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-74 m²/s²
0-3 km storm-relative helicity
-54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

088 
WGUS54 KMOB 111836
FFWMOB
MSC131-120030-
/O.NEW.KMOB.FF.W.0033.160811T1836Z-160812T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
136 PM CDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL STONE COUNTY IN SOUTHEASTERN MISSISSIPPI...

* UNTIL 730 PM CDT

* AT 134 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. OVER THREE INCHES OF RAIN HAS
  FALLEN IN THE PAST THREE HOURS AROUND WIGGINS. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY. EXPECT UP TO ANOTHER INCH ACROSS THE
  WARNED AREA WITHIN THE NEXT HOUR.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WIGGINS AND PERKINSTON. 

LAT...LON 3091 8919 3090 8903 3076 8907 3076 8924

$$
2 follow-up statements
936 
WGUS74 KMOB 111934
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
234 PM CDT THU AUG 11 2016

MSC131-120030-
/O.CON.KMOB.FF.W.0033.000000T0000Z-160812T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STONE MS-
234 PM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTH CENTRAL STONE COUNTY...

AT 230 PM CDT...THE HEAVIER RAINFALL HAS TAPERED IN THE WARNED
AREA...HOWEVER REPORTS ARE SUCH THAT SEVERAL ROADS IN AND AROUND THE
WIGGINS AREAS ARE STILL WATER COVERED ACCORDING TO STONE COUNTY EMA.
THERE ARE ALSO REPORTS THAT AREA CREEKS ARE SWOLLEN BUT NOT QUITE
YET TO FLOWING OVER THEIR BANKS. THE WATER WILL BE SLOW TO RECEDE SO
PLEASE DO NOT DRIVE YOUR CAR INTO AREAS WHERE WATER COVERS THE ROAD.

RAINFALL IS CURRENTLY ENDING FROM THE EAST OVER THE WARNED AREA.
LITTLE...IF ANY...REDEVELOPMENT OF SHOWERS AND THUNDERSTORMS IS
EXPECTED THROUGH EARLY EVENING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WIGGINS AND PERKINSTON. 

LAT...LON 3091 8919 3090 8903 3076 8907 3076 8924

$$
754 
WGUS74 KMOB 112223
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
523 PM CDT THU AUG 11 2016

MSC131-112230-
/O.CAN.KMOB.FF.W.0033.000000T0000Z-160812T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STONE MS-
523 PM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL STONE COUNTY IS
CANCELLED...

AT 520 PM CDT...THE POTENTIAL FOR HEAVY RAINS HAS DECREASED
SUFFICIENTLY AND REPORTS INDICATE THAT EARLIER FLOODED AREAS HAVE
RECEDED.  THEREFORE THE FLASH FLOOD WARNING HAS BEEN
CANCELLED.  

LAT...LON 3091 8919 3090 8903 3076 8907 3076 8924

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 12:02 PM CDTAreal Flood AdvisoryMOBGeorge, Greene, Perry, Stone4 hr
Aug 11, 1:18 PM CDTAreal Flood AdvisoryMOBPerry, Stone3 hr

Nearby

Flash Flood Warnings in Mississippi, 2016Every flash flood warning in 2016

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; radar from the NEXRAD Level II archive.