Alert archive / Mississippi / Flash Flood Warnings in 2013

Flash Flood Warning 11, NWS Mobile, AL

May 1, 2013George County, Mississippi

NWS Mobile, AL issued this flash flood warning at May 1, 2013, 3:06 PM CDT for George County, Mississippi. It was in force for 6 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 1, 2013, 3:06 PM CDT (20:06 UTC)
Expired
May 1, 2013, 9:00 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County George County, MS

The radar

The Mobile radar (KMOB), 53 km from the middle of the area, began a volume at 20:06 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, 8.1 hours before the alert went out and 115 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 2013-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 856 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 2013-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.193958Sfc1 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
856 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
553 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
161 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.

275 
WGUS54 KMOB 012006
FFWMOB
MSC039-020200-
/O.NEW.KMOB.FF.W.0011.130501T2006Z-130502T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
306 PM CDT WED MAY 1 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 900 PM CDT

* AT 257 PM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE WARNED
  AREA AND RADAR ESTIMATES SHOW 2 TO 3 INCHES OF RAINFALL HAS
  OCCURRED JUST OVER THE PAST HOUR. A TOTAL OF NEARLY EIGHT INCHES
  OF RAIN HAS FALLEN SINCE LAST EVENING. 

  THIS WILL LIKELY CAUSE FLASH FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  RURAL WESTERN GEORGE COUNTY

  DO NOT DRIVE INTO AREAS WHERE WATER CROSSES THE ROAD AND SEEK
  HIGHER GROUND IF YOU LIVE NEAR CREEKS SURROUNDING THE BENNDALE AREA
  IN NORTHWESTERN GEORGE COUNTY MISSISSIPPI.  

LAT...LON 3091 8883 3100 8883 3100 8869 3086 8858
      3079 8863 3076 8870 3082 8888

$$
2 follow-up statements
802 
WGUS74 KMOB 012057
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
357 PM CDT WED MAY 1 2013

MSC039-020200-
/O.CON.KMOB.FF.W.0011.000000T0000Z-130502T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GEORGE MS-
357 PM CDT WED MAY 1 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
WESTERN GEORGE COUNTY...

AT 348 PM CDT...VERY HEAVY RAINFALL CONTINUES OVER THE WARNED AREA. 
AS MUCH AS FIVE INCHES OF RAIN HAS FALLEN SINCE 1 PM CDT. 

GIVEN THE WAY THAT NEWER THUNDERSTORM CELLS ARE DEVELOPING AND 
MOVING TOWARDS THE WARNED AREA...IT IS NOT OUT THE QUESTION TO 
RECEIVE AT LEAST ANOTHER TWO TO FOUR INCHES OF RAIN THROUGH MID TO 
LATE EVENING. 

THIS WILL CAUSE CONTINUED FLASH FLOODING IN THE WARNED 
AREA...PARTICULARLY IN AND AROUND NEAR BENNDALE.

LOCATIONS IMPACTED INCLUDE...
  RURAL WESTERN GEORGE COUNTY

IF YOU LIVE NEAR A CREEK IN NORTHWESTERN GEORGE COUNTY SEEK HIGHER 
GROUND. IT IS LIKELY OUT OF ITS BANKS AND RISING. DO NOT DRIVE INTO 
AREAS WHERE WATER COVERS THE ROAD. 

LAT...LON 3091 8883 3100 8883 3100 8869 3086 8858
      3079 8863 3076 8870 3082 8888

$$
149 
WGUS74 KMOB 020041
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
741 PM CDT WED MAY 1 2013

MSC039-020200-
/O.CON.KMOB.FF.W.0011.000000T0000Z-130502T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GEORGE MS-
741 PM CDT WED MAY 1 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
WESTERN GEORGE COUNTY...

AT 700 PM...WATER WAS REPORTED OVER THE ROAD AT STATE HIGHWAY 63 AND 
COOPER ROAD IN GEORGE COUNTY. THREE FEET OF WATER WAS ALSO REPORTED 
OVER HIGHWAY 198 WEST AT THE RAILROAD OVERPASS. WATER WAS ALSO 
REPORTED OVER HIGHWAY 26 WEST AND FIG FARM ROAD. 

AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SHOWERS AND THUNDERSTORMS PRODUCING HEAVY 
RAINFALL MOVING INTO EASTERN GEORGE COUNTY. DOPPLER RADAR ESTIMATES 
THAT AS MUCH AS 3 TO 5 INCHES OF RAIN...WITH ISOLATED HIGHER TOTALS 
HAVE FALLEN OVER MUCH OF GEORGE COUNTY SINCE THIS AFTERNOON. 
ADDITIONAL RAINFALL OF 1 TO 2 INCHES WITH ISOLATED HIGHER TOTALS  
WILL BE POSSIBLE THROUGH 9 PM AS ADDITIONAL SHOWERS AND 
THUNDERSTORMS MOVE INTO THE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. 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. REMEMBER...TURN AROUND...DONT DROWN.

&&

LAT...LON 3091 8883 3100 8883 3100 8869 3086 8858
      3079 8863 3076 8870 3082 8888

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 12:32 PM CDTAreal Flood AdvisoryMOBGeorge, Perry, Stone6 hr
May 1, 2:21 PM CDTAreal Flood WarningMOBGeorge, Greene, Perry, Stone12 hr
May 1, 3:19 PM CDTFlash Flood WatchMOBGeorge, Greene, Perry, Stone, Wayne24 hr
May 1, 4:09 PM CDTFlash Flood WarningMOBStone6 hr
May 1, 5:42 PM CDTTornado WarningMOBGeorge48 min
May 1, 6:50 PM CDTFlash Flood WarningMOBGeorge3 hr

Nearby

Flash Flood Warnings in Mississippi, 2013Every flash flood warning in 2013

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.