Alert archive / Mississippi / Flash Flood Watches in 2009

Flash Flood Watch 6, NWS Mobile, AL

May 23, 2009Washington County, Alabama; 5 counties in Mississippi

NWS Mobile, AL issued this flash flood watch at May 23, 2009, 3:53 AM CDT for Washington County, Alabama; 5 counties in Mississippi. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: May 23, 2009, 3:53 AM CDT (08:53 UTC)
Expired: May 23, 2009, 6:53 PM CDT
In force: 15 hr
Issued by: NWS Mobile, AL
Flood severity: None

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

The radar

The Mobile radar (KMOB), 72 km from the middle of the area, began a volume at 08:52 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 forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this flash flood watch went out at May 22, 11:00 PM CDT, 4 hours 53 minutes earlier.

Area forecast discussion, May 22, 11:00 PM CDT, 4 hours 53 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
1100 PM CDT FRI MAY 22 2009

.UPDATE...UPPER AIR ANALYSIS OF STREAMLINES AT H30 THIS EVENING
SHOWS AXIS OF HIGH LEVEL TROF ACROSS THE YUCATAN WHICH HAS ALLOWED
FOR A BIT MORE OF AN ANTICYCLONE ALOFT TO NOSE WWD OVER THE SE U.S.
AND NE GULF. THIS HAS SUPPORTED THE FORMATION OF DEEPER
CONVECTION/COLDER CLOUD TOPS CLOSER TO THE GULF SURFACE LOW CENTER...WHICH
WAS POSITIONED ABOUT 200 MILES SOUTH OF PENSACOLA FL. WITH THE DEEP
CONVECTION...THERE IS A BIT MORE CONCERN THAT LATENT HEAT RELEASE
PROCESSES WILL FAVOR A SYSTEM THAT COULD BE TAKING ON WARM
CORE=>TROPICAL CHARACTERISTICS. THE LATEST OUTLOOKS BY THE NATIONAL
HURRICANE CENTER ARE NOW DEFINING THIS LOW AS THE FIRST POTENTIAL
CANDIDATE OF THE 2009 ATLANTIC BASIN SEASON TO BE CLASSIFIED A
TROPICAL CYCLONE...WITH A 30 TO 50 PERCENT (MEDIUM) CHANCE OF
DEVELOPMENT BEFORE COMING ASHORE SAT.

FCSTRS HAVE MADE SOME TWEAKS TO POP/WX/AND QPF GRIDS OUT OF
RESPECT FOR THE NWD PROPAGATION OF DEEP LAYER LIFT AND THE LOW
TRACK THROUGH SAT.

.MARINE...LATEST MARINE DATA COLLECTION PLATFORMS ALONG WITH RADAR
TRENDS OVER THE AL/NW FL WATERS INDICATE TO FORECASTERS A NEED TO
HOIST SMALL CRAFT ADVISORIES FOR MOBILE BAY. HAVE ADJUSTED WIND
GRIDS FOR THIS. WE WILL TAKE THIS ADVISORY OUT THROUGH 24.00 UTC AND
LEAVE THE OTHER AS IS THRU 24.03 UTC. IF LOW STAYS RELATIVELY STEADY
STATE...TIDES LOOK TO BE 1 TO 2 FEET ABOVE NORMAL THROUGH SAT.
HOWEVER...IF LOW STRENGTHENS THEN WE COULD BE DEALING WITH SOME
COASTAL FLOODING. WILL BE ISSUING A COASTAL FLOOD STATEMENT TO
CONVEY THE POSSIBILITIES. STAY TUNED FOR THE VERY LATEST UPDATES ON
THE GULF LOW. /10

&&

.PRELIMINARY POINT TEMPS/POPS...
MOBILE      66  79  67  82 /  80  80  60  70
PENSACOLA   69  80  70  82 /  90  80  60  70
DESTIN      71  78  72  79 /  90  80  60  70
EVERGREEN   64  79  65  82 /  80  80  60  70
WAYNESBORO  63  79  64  83 /  70  80  60  70
CAMDEN      63  78  65  82 /  80  90  70  70

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
FL...NONE.
MS...NONE.
GM...SMALL CRAFT ADVISORY UNTIL 10 PM SATURDAY FOR THE FOLLOWING
     ZONES: COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20
     NM...COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT
     20 NM...WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60
     NM...AND WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20
     TO 60 NM.

     SMALL CRAFT ADVISORY UNTIL 7 PM SATURDAY FOR THE FOLLOWING
     ZONES: AND MOBILE BAY.

&&

Hazardous weather outlook, May 22, 8:50 PM CDT, 7 hours 3 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 11:04 PM CDT	Coastal Flood Statement	MOB		16 hr
May 22, 11:11 PM CDT	Special Marine Warning	MOB		94 min
May 23, 12:39 AM CDT	Special Marine Warning	MOB		2 hr
May 23, 2:30 AM CDT	Special Marine Warning	MOB		2 hr
May 23, 5:19 AM CDT	Special Marine Warning	MOB		116 min
May 23, 7:40 AM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
May 23, 8:25 AM CDT	Coastal Flood Warning	MOB		5 hr
May 23, 8:35 AM CDT	Flash Flood Warning	MOB	Mobile	5 hr
May 23, 8:44 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	31 min
May 23, 8:46 AM CDT	Special Marine Warning	MOB		89 min
May 23, 9:00 AM CDT	Special Marine Warning	MOB		90 min
May 23, 9:14 AM CDT	Special Marine Warning	MOB		31 min
May 23, 9:17 AM CDT	Special Marine Warning	MOB		43 min
May 23, 10:11 AM CDT	Wind Advisory	MOB	Washington	5 hr
May 23, 10:49 AM CDT	Special Marine Warning	MOB		26 min
May 23, 10:47 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	58 min
May 23, 2:55 PM CDT	Areal Flood Advisory	MOB	George, Greene, Perry, Stone	3 hr

Nearby

Flash Flood Watches in Mississippi, 2009 Flash Flood Watches in Alabama, 2009 Every flash flood watch in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.