Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 26, NWS Mobile, AL

September 3, 2011George County, Perry County, Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at Sep 3, 2011, 3:19 PM CDT for George County, 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
Sep 3, 2011, 3:19 PM CDT (20:19 UTC)
Expired
Sep 3, 2011, 7:15 PM CDT
In force
4 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties George County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 63 km from the middle of the area, began a volume at 20:20 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, 8.3 hours before the alert went out and 102 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 2011-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 850 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 2011-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 square meters per square second.19395878Sfc1 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
850 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
1.0
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

536 
WGUS54 KMOB 032019
FFWMOB
MSC039-111-131-040015-
/O.NEW.KMOB.FF.W.0026.110903T2019Z-110904T0015Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
319 PM CDT SAT SEP 3 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  EASTERN STONE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 715 PM CDT

* AT 306 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED ANOTHER
  BAND OF VERY HEAVY RAIN SHOWERS AND THUNDERSTORMS APPROACHING THE  
  WARNED AREA FROM THE SOUTH.  RADAR INDICATES THAT 3 TO 4 INCHES OF
  RAIN HAVE ALREADY FALLEN OVER THE REGION.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BIG
  LEVEL...DEEP CREEK...BATT PLACE...BARBARA...RUBLE...GIBSON
  LANDING...DALE...CROSSROADS...CENTRAL...BARTON...WHITES CROSSING...
  RAMSEY SPRINGS...BEATRICE AND BENNDALE

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA OVER THE NEXT TWO HOURS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF 
CREEKS AND STREAMS.

REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE IN MOBILE AT 
AREA CODE 2 5 1...AND THEN 6 3 3 6 4 4 3. OR...YOU MAY CONTACT YOUR 
NEAREST LAW ENFORCEMENT AGENCY OR COUNTY EMERGENCY MANAGEMENT...AND 
THEY WILL RELAY YOUR REPORT.

LAT...LON 3100 8905 3100 8893 3095 8888 3086 8857
      3074 8856 3073 8863 3073 8888 3068 8888
      3067 8889 3067 8904 3091 8909

$$
JW
1 follow-up statement
483 
WGUS74 KMOB 040011
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
711 PM CDT SAT SEP 3 2011

MSC039-111-131-040020-
/O.EXP.KMOB.FF.W.0026.000000T0000Z-110904T0015Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STONE MS-PERRY MS-GEORGE MS-
711 PM CDT SAT SEP 3 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 715 PM CDT FOR SOUTHWESTERN
GEORGE...SOUTHEASTERN PERRY AND EASTERN STONE COUNTIES...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHWEST ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3100 8905 3100 8893 3095 8888 3086 8857
      3074 8856 3073 8863 3073 8888 3068 8888
      3067 8889 3067 8904 3091 8909

$$

JW

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 10:37 PM CDTTropical Storm WarningMOBGeorge, Stone47 hr
Sep 3, 9:26 AM CDTRiver Flood WarningMOBGeorge, Greene, Perry4 days
Sep 3, 2:14 PM CDTTornado WarningMOBGeorge, Greene33 min
Sep 3, 4:53 PM CDTFlash Flood WarningMOBGeorge, Greene, Perry3 hr
Sep 3, 6:09 PM CDTTornado WarningMOBGeorge51 min

Nearby

Flash Flood Warnings in Mississippi, 2011Every flash flood warning in 2011

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.