Alert archive / Mississippi / Flash Flood Warnings in 2012

Flash Flood Warning 1, NWS Mobile, AL

February 18, 2012Mobile County, Washington County, Alabama; 4 counties in Mississippi

NWS Mobile, AL issued this flash flood warning at Feb 18, 2012, 2:28 PM CST for Mobile County, Washington County, Alabama; 4 counties in Mississippi. It was in force for 32 days. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Feb 18, 2012, 2:28 PM CST (20:28 UTC)
Expired: Mar 22, 2012, 3:15 AM CDT
In force: 32 days
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Mobile County, AL, Washington County, AL, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 67 km from the middle of the area, began a volume at 20:28 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, 8.5 hours before the alert went out and 93 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 177 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.

389 
WGUS54 KMOB 182028
FFWMOB
ALC097-129-MSC039-041-111-131-182230-
/O.NEW.KMOB.FF.W.0001.120218T2028Z-120218T2230Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
228 PM CST SAT FEB 18 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF LUCEDALE...
  SOUTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  STONE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WIGGINS...
  NORTHWESTERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF CITRONELLE...
  SOUTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 430 PM CST

* AT 223 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN FROM A THUNDERSTORM 86 MILES SOUTHWEST OF MCHENRY...OR 65
  MILES WEST OF WAVELAND...MOVING WEST AT 335 MPH.

ADDITIONAL RAINFALL AMOUNTS OF 1.5 TO 2.5 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 3082 8934 3124 8821 3079 8818 3073 8862
      3073 8888 3068 8888 3067 8898 3067 8923
      3064 8924 3064 8933

$$

3 follow-up statements

649 
WGUS54 KMOB 182046 CCA
FFWMOB
ALC097-129-MSC039-041-111-131-182230-
/O.COR.KMOB.FF.W.0001.120218T2028Z-120218T2230Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE MOBILE AL
228 PM CST SAT FEB 18 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GEORGE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF LUCEDALE...
  SOUTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  STONE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WIGGINS...
  NORTHWESTERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF CITRONELLE...
  SOUTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 430 PM CST

* AT 223 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN FROM A THUNDERSTORM 86 MILES SOUTHWEST OF MCHENRY...OR 65
  MILES WEST OF WAVELAND...MOVING WEST AT 40 MPH.

ADDITIONAL RAINFALL AMOUNTS OF 1.5 TO 2.5 INCHES ARE POSSIBLE IN THE
WARNED AREA.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 3082 8934 3124 8821 3079 8818 3073 8862
      3073 8888 3068 8888 3067 8898 3067 8923
      3064 8924 3064 8933

$$

196 
WGUS74 KMOB 182101
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
301 PM CST SAT FEB 18 2012

ALC097-129-MSC039-041-111-131-182230-
/O.CON.KMOB.FF.W.0001.000000T0000Z-120218T2230Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-STONE MS-PERRY MS-GREENE MS-GEORGE MS-MOBILE AL-
301 PM CST SAT FEB 18 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CST FOR
NORTHWESTERN MOBILE...GEORGE...SOUTHERN GREENE...SOUTHEASTERN
PERRY...STONE AND SOUTHWESTERN WASHINGTON COUNTIES...

AT 300 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED 
CLUSTERS OF STORMS PRODUCING VERY HEAVY RAIN CONTINUING TO MOVE OVER 
THE WARNING AREA. THESE STORMS WERE MOVING EAST AT 40 MPH BUT THE 
AXIS OF THE STORM CLUSTERS WAS MOVING SLOWLY. 

DOPPLER WEATHER RADAR STORM TOTAL ESTIMATES SUGGEST UPWARDS OF 1 TO 
3 INCHES OF RAIN HAS FALLEN IN THE WARNED AREA OVER THE PAST THREE 
HOURS. ADDITIONAL RAINS OF 1.5 TO 2.5 INCHES ARE POSSIBLE THROUGH 430 
PM. 

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST SATURDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3082 8934 3124 8821 3079 8818 3073 8862
      3073 8888 3068 8888 3067 8898 3067 8923
      3064 8924 3064 8933

$$

10

120 
WGUS74 KMOB 220433
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1133 PM CDT WED MAR 21 2012

MSC131-220815-
/O.CON.KMOB.FF.W.0001.000000T0000Z-120322T0815Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STONE MS-
1133 PM CDT WED MAR 21 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM CDT FOR
WESTERN STONE COUNTY...

AT 1126 PM CDT...DOPPLER RADAR RAINFALL ESTIMATES INDICATE THAT UP 
TO 4 TO 5 INCHES OF RAIN FELL OVER WESTERN STONE COUNTY THIS 
EVENING.  THE HEAVY RAINFALL HAS ENDED BUT THE EARLIER HEAVY 
RAINFALL WILL RESULT IN CONTINUED LIKELY FLASH FLOODING IN THE 
WARNED AREA UNTIL THE RAINS HAVE COMPLETED RUNNING OFF.  WATER WAS 
REPORTED OVER THE ROAD AT THE INTERSECTION OF STUMP TEXAS ROAD AND 
NEW HOPE ROAD NEAR THE TEXAS LOCALE.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TEXAS...SMITH
TOWN AND BOND

LAT...LON 3066 8934 3091 8935 3092 8934 3091 8913
      3068 8918 3067 8918 3067 8923 3064 8924
      3064 8934 3065 8935

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 18, 3:38 AM CST	Wind Advisory	MOB		38 hr
Feb 18, 1:56 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	49 min
Feb 18, 3:13 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Conecuh, Escambia, Monroe	47 min
Feb 18, 3:28 PM CST	Gale Warning	MOB		21 hr
Feb 18, 3:37 PM CST	Flash Flood Warning	MOB	Baldwin, Clarke, Conecuh, Escambia, Mobile, Monroe and 1 more	113 min
Feb 18, 3:59 PM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	61 min
Feb 18, 4:01 PM CST	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	44 min
Feb 18, 4:07 PM CST	Special Marine Warning	MOB		83 min
Feb 18, 4:19 PM CST	Flash Flood Warning	MOB	Baldwin, Mobile	116 min
Feb 18, 4:21 PM CST	Tornado Warning	MOB	Mobile	24 min
Feb 18, 4:25 PM CST	Areal Flood Advisory	MOB	Choctaw, Clarke, Monroe, Washington, Wilcox	2 hr
Feb 18, 4:30 PM CST	Flash Flood Warning	MOB	Mobile, Washington	60 min
Feb 18, 4:38 PM CST	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Crenshaw, Escambia	52 min
Feb 18, 4:52 PM CST	Flash Flood Warning	MOB	Baldwin	113 min
Feb 18, 4:59 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	76 min
Feb 18, 5:13 PM CST	Flash Flood Warning	MOB	Baldwin, Butler, Conecuh, Covington, Crenshaw, Escambia	2 hr
Feb 18, 5:17 PM CST	Tornado Warning	MOB	Baldwin	28 min
Feb 18, 5:27 PM CST	Special Marine Warning	MOB		93 min
Feb 18, 9:48 AM CST	River Flood Warning	MOB	George, Greene, Perry	6 days
Feb 18, 9:48 AM CST	River Flood Warning	MOB	George, Greene, Wayne	6 days
Feb 18, 12:39 PM CST	Severe Thunderstorm Warning	MOB	Perry, Stone	51 min
Feb 18, 1:13 PM CST	Severe Thunderstorm Warning	MOB	George, Stone	47 min
Feb 18, 1:17 PM CST	Tornado Warning	MOB	George, Stone	13 min
Feb 18, 1:35 PM CST	Areal Flood Advisory	MOB	Perry, Stone	115 min
Feb 18, 1:36 PM CST	Tornado Warning	MOB	George, Greene	39 min
Feb 18, 4:05 PM CST	Areal Flood Warning	MOB	George, Greene, Perry, Stone, Wayne	34 days

Nearby

Flash Flood Warnings in Mississippi, 2012 Flash Flood Warnings in Alabama, 2012 Every flash flood warning in 2012

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.