Alert archive / Mississippi / Flash Flood Warnings in 2011

Flash Flood Warning 10, NWS Mobile, AL

March 9, 20114 counties in Mississippi; 4 counties in Alabama

NWS Mobile, AL issued this flash flood warning at Mar 9, 2011, 7:26 AM CST for 4 counties in Mississippi; 4 counties in Alabama. It was in force for 6 hr. 2 reports 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: Mar 9, 2011, 7:26 AM CST (13:26 UTC)
Expired: Mar 9, 2011, 1:30 PM CST
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

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

The radar

The Mobile radar (KMOB), 46 km from the middle of the area, began a volume at 13:30 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

Time	Report	Where	Remark
Mar 9, 9:30 AM CST	FLASH FLOOD	5 Se Citronelle, AL	FLOODED ROADWAYS IN LAMBERT. TIME ESTIMATED.
Mar 9, 10:00 AM CST	FLASH FLOOD	1 Sse Dale, MS	WATER REPORTED OVER ROADS NEAR INTERSECTION OF HIGHWAY 57 WEST AND MIXON LAKE ROAD. TIME ESTIMATED.

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, 1.4 hours before the alert went out and 134 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: 1220 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 456 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 499 m²/s²
0-3 km storm-relative helicity: 571 m²/s²
Significant tornado parameter: 4.3
Supercell composite: 19.4

Open this sounding in Storm Lab

The text

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

770 
WGUS54 KMOB 091326
FFWMOB
ALC003-025-097-129-MSC039-041-111-131-091930-
/O.NEW.KMOB.FF.W.0010.110309T1326Z-110309T1930Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
726 AM CST WED MAR 9 2011

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...
  THIS INCLUDES THE CITY OF LEAKESVILLE...
  SOUTHERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  STONE COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WIGGINS...
  NORTHWESTERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  SOUTH CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA...
  NORTHERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITIES OF...CREOLA...CITRONELLE...
  SOUTHERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 130 PM CST WEDNESDAY

* AT 715 AM CST...NATIONAL WEATHER SERVICE RADAR INDICATED A LARGE   
  AREA OF INTENSE SHOWERS AND THUNDERSTORMS MOVING INTO THE WARNED   
  AREA. VERY HEAVY RAIN WILL TRAIN ACROSS THE AREA WITH RAINFALL     
  TOTALS OF 2 TO 4 INCHES LIKELY OVER THE NEXT FEW HOURS.            
  THIS WILL RESULT IN THE FLASH FLOODING THREAT INCREASING RAPIDLY. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINEOLA...
  MOUNT VERNON...MCLAIN AND MCINTOSH

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

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 3090 8933 3092 8914 3111 8913 3142 8759
      3134 8778 3125 8761 3101 8764 3076 8838
      3073 8886 3070 8887 3065 8934

$$

JFB

1 follow-up statement

684 
WGUS74 KMOB 091640
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1040 AM CST WED MAR 9 2011

ALC003-025-097-129-MSC039-041-111-131-091930-
/O.CON.KMOB.FF.W.0010.000000T0000Z-110309T1930Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-CLARKE AL-GEORGE MS-STONE MS-PERRY MS-GREENE MS-
BALDWIN AL-MOBILE AL-
1040 AM CST WED MAR 9 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM CST FOR
NORTHERN MOBILE...NORTHWESTERN BALDWIN...SOUTHERN GREENE...SOUTHERN
PERRY...STONE...GEORGE...SOUTH CENTRAL CLARKE AND SOUTHERN WASHINGTON
COUNTIES...

AT 1035 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT 2 TO 6 INCHES OF RAIN HAS FALLEN ACROSS THE AREA.  MOST OF THE 
RAIN HAS ENDED OVER THE AREA WHICH IS ALLOWING FOR THE HEAVY RAINS 
TO RUN OFF.  IT IS POSSIBLE THAT AN AREAL FLOOD WARNING WILL BE 
ISSUED FOR THE AREA BY 130 PM IF IT IS DETERMINED THAT FLOODING WILL 
LAST LONGER THAN THE EXPIRATION OF THE FLASH FLOOD WARNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA.

&&

LAT...LON 3090 8933 3092 8914 3111 8913 3142 8759
      3134 8778 3125 8761 3101 8764 3076 8838
      3073 8886 3070 8887 3065 8934

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 7:01 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry	44 min
Mar 8, 7:47 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	43 min
Mar 8, 8:23 PM CST	Severe Thunderstorm Warning	MOB	Greene, Wayne	37 min
Mar 8, 9:32 PM CST	River Flood Warning	MOB	George, Greene, Perry	9 days
Mar 8, 9:32 PM CST	River Flood Warning	MOB	George, Greene, Jackson	10 days
Mar 9, 5:01 AM CST	Tornado Warning	MOB	Wayne	44 min
Mar 9, 5:07 AM CST	Flash Flood Warning	MOB	Wayne	6 hr
Mar 9, 5:51 AM CST	Flash Flood Warning	MOB	Greene, Perry, Wayne	6 hr
Mar 9, 6:00 AM CST	Tornado Warning	MOB	Greene, Perry	45 min
Mar 9, 6:04 AM CST	Tornado Warning	MOB	Perry, Stone	41 min
Mar 9, 6:37 AM CST	Tornado Warning	MOB	Greene	17 min
Mar 9, 6:38 AM CST	Tornado Warning	MOB	George, Greene, Perry, Stone	37 min
Mar 9, 6:41 AM CST	Severe Thunderstorm Warning	MOB	George, Stone	49 min
Mar 9, 7:08 AM CST	Severe Thunderstorm Warning	MOB	George, Greene	52 min
Mar 9, 11:00 AM CST	Areal Flood Warning	MOB	Wayne	5 hr
Mar 9, 11:30 AM CST	River Flood Warning	MOB	Greene, Wayne	47 hr
Mar 9, 11:30 AM CST	River Flood Warning	MOB	Perry	6 days
Mar 9, 12:00 PM CST	Areal Flood Warning	MOB	Greene, Perry, Wayne	4 hr
Mar 8, 7:11 PM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	34 min
Mar 8, 9:04 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington	41 min
Mar 8, 9:44 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington, Wilcox	46 min
Mar 9, 1:32 AM CST	Flash Flood Warning	MOB	Choctaw	118 min
Mar 9, 4:20 AM CST	Flash Flood Warning	MOB	Choctaw	6 hr
Mar 9, 4:22 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	38 min
Mar 9, 4:32 AM CST	Tornado Warning	MOB	Choctaw	33 min
Mar 9, 5:40 AM CST	Tornado Warning	MOB	Choctaw, Clarke	33 min
Mar 9, 7:33 AM CST	Flash Flood Warning	MOB	Monroe	6 hr
Mar 9, 7:52 AM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	83 min
Mar 9, 7:54 AM CST	Special Marine Warning	MOB		81 min
Mar 9, 8:01 AM CST	Tornado Warning	MOB	Baldwin, Mobile	44 min
Mar 9, 8:14 AM CST	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	61 min
Mar 9, 8:27 AM CST	Tornado Warning	MOB	Baldwin, Mobile	63 min
Mar 9, 8:35 AM CST	Tornado Warning	MOB	Conecuh, Covington, Escambia	40 min
Mar 9, 8:41 AM CST	Flash Flood Warning	MOB	Baldwin, Mobile	4 hr
Mar 9, 8:48 AM CST	Flash Flood Warning	MOB	Conecuh, Escambia	5 hr
Mar 9, 8:50 AM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw	40 min
Mar 9, 9:02 AM CST	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	58 min
Mar 9, 9:10 AM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia	65 min
Mar 9, 9:10 AM CST	Tornado Warning	MOB	Baldwin	50 min
Mar 9, 9:16 AM CST	Tornado Warning	MOB	Baldwin	44 min
Mar 9, 9:16 AM CST	Tornado Warning	MOB	Covington	59 min
Mar 9, 9:19 AM CST	Special Marine Warning	MOB		116 min
Mar 9, 9:23 AM CST	Special Marine Warning	MOB		97 min
Mar 9, 9:25 AM CST	Flash Flood Warning	MOB	Baldwin	6 hr
Mar 9, 9:26 AM CST	Tornado Warning	MOB	Baldwin, Escambia	49 min
Mar 9, 9:26 AM CST	Tornado Warning	MOB	Covington, Crenshaw	26 min
Mar 9, 9:36 AM CST	Flash Flood Warning	MOB	Conecuh, Covington, Escambia	114 min
Mar 9, 9:40 AM CST	Tornado Warning	MOB	Baldwin	50 min
Mar 9, 9:44 AM CST	Areal Flood Advisory	MOB	Butler, Conecuh, Covington, Crenshaw	4 hr
Mar 9, 9:54 AM CST	Tornado Warning	MOB	Covington	25 min
Mar 9, 10:09 AM CST	Severe Thunderstorm Warning	MOB	Covington	66 min
Mar 9, 10:22 AM CST	Areal Flood Warning	MOB	Choctaw	5 hr
Mar 9, 10:55 AM CST	Special Marine Warning	MOB		80 min
Mar 9, 11:14 AM CST	Tornado Warning	MOB	Baldwin	61 min
Mar 9, 11:30 AM CST	River Flood Warning	MOB	Clarke, Monroe, Wilcox	10 days
Mar 9, 11:54 AM CST	Areal Flood Advisory	MOB	Conecuh, Covington, Escambia	111 min
Mar 9, 11:58 AM CST	Special Marine Warning	MOB		2 hr
Mar 9, 2:02 PM CST	Special Marine Warning	MOB		58 min

Nearby

Flash Flood Warnings in Mississippi, 2011 Flash Flood Warnings in Alabama, 2011 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.