Area Forecast Discussion
Issued by NWS Mobile, AL

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS64 KMOB 270516 AAB
AFDMOB

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
1116 PM CST FRI DEC 26 2014

.MARINE...HAVE UPDATED TO ISSUE A SMALL CRAFT ADVISORY FOR THE
ALABAMA WATERS OUT 60 NM. WINDS AT 42012 AND 42040 HAVE INCREASED TO
SMALL CRAFT ADVISORY CRITERIA AND WILL MAINTAIN SUFFICIENT DURATION
TO WARRANT THE ADVISORY OVERNIGHT. /29

&&

.AVIATION...
06Z ISSUANCE...A VFR CEILING NEAR 8 KFT GRADUALLY LOWERS TO AN IFR
CEILING BY 21Z SATURDAY TO 00Z SUNDAY WHILE EAST WINDS NEAR 5-10 KNOTS
BECOME SOUTHEASTERLY 10-13 KNOTS. WILL HAVE PREVAILING LIGHT RAIN BY
15Z SATURDAY WITH MODERATE SHOWERS BY 18Z AND THUNDERSTORMS MIXING IN
BY NEAR 21Z SATURDAY. /29

&&

.PREV DISCUSSION... /ISSUED 941 PM CST FRI DEC 26 2014/

UPDATE...HAVE DELAYED THE ONSET OF RAIN CHANCES TO UNTIL LATE
TONIGHT AND ALSO MADE MINOR ADJUSTMENTS TO CLOUD COVER TRENDS AND
OVERNIGHT LOWS. UPDATE OUT SOON. /29

PREV DISCUSSION... /ISSUED 536 PM CST FRI DEC 26 2014/

AVIATION...
00Z ISSUANCE...VFR CONDITIONS BEGIN THE TAF PERIOD THEN WILL HAVE A
MVFR CEILING DEVELOPING BY 15Z SATURDAY. PREVAILING LIGHT RAIN ALSO
BEGINS AT 15Z WITH MODERATE SHOWERS PREVAILING BY 18Z. EXPECT TO SEE
SOME THUNDERSTORMS MIXED IN DURING THE LATE AFTERNOON HOURS AFTER
20Z. LIGHT EASTERLY WINDS BECOME SOUTHEAST BY 18Z SATURDAY. /29

PREV DISCUSSION... /ISSUED 330 PM CST FRI DEC 26 2014/

SHORT TERM [TONIGHT THROUGH SATURDAY]...WARM CONVEYOR BELT
BEGINNING TO DEVELOP ACROSS THE REGION IN RESPONSE TO THE
APPROACHING LOW PRESSURE SYSTEM OVER THE SOUTHWESTERN UNITED STATES.
ATMOSPHERE WILL CONTINUE TO MOISTEN AND UPPER LEVEL SOUTHWESTERLY
WIND FLOW STRENGTHEN AS THIS SYSTEM APPROACHES. LAYER PRECIPITABLE
WATERS SHOULD INCREASE TO CLOSE TO 2.0 INCHES (2 STANDARD DEVIATIONS
ABOVE NORMAL) BY SATURDAY AFTERNOON...UP FROM .40 INCHES THIS
MORNING.  LIGHT RAINFALL IS EXPECTED TO BEGIN FALLING OVER OUR
SOUTHEASTERN MISSISSIPPI COUNTIES LATE TONIGHT...EARLY SATURDAY
MORNING THEN SOUTHWESTERN ALABAMA DURING THE MORNING AND FLORIDA BY
EARLY AFTERNOON...MINOR SHORT WAVES PROPAGATING THROUGH THE NEARLY
SATURATED ATMOSPHERE OVERLYING THE AREA WILL TRIGGER PERIODIC
SHOWERS AND ISOLATED THUNDERSTORMS DURING THE AFTERNOON. RAINFALL
TOTALS OF A HALF TO TWO INCHES ARE POSSIBLE WITH THE HEAVIEST
AMOUNTS WEST...OVER SOUTHEAST MISSISSIPPI. THICKENING CLOUD COVER
TONIGHT WILL KEEP OVERNIGHT LOW TEMPERATURES IN THE 40 AND 50S.
DESPITE CLOUD COVER AND RAIN...WARM AIR ADVECTION OVER THE REGION
WILL CREATE DAYTIME HIGHS IN THE 60S. /08 JW

[SATURDAY NIGHT THROUGH SUNDAY]...AN AREA OF LOW PRESSURE WILL
DEVELOP OFF THE TEXAS COAST SATURDAY NIGHT AS A SHORTWAVE DROPS INTO
THE SOUTHERN PLAINS. THIS LOW WILL THEN MOVE NORTHEAST ACROSS
SOUTHERN MISSISSIPPI SUNDAY MORNING AND INTO THE CAROLINAS BY SUNDAY
NIGHT. THIS WILL GENERATE WIDESPREAD SHOWERS AND THUNDERSTORMS
ACROSS THE AREA SATURDAY NIGHT INTO SUNDAY AS A COLD FRONT
APPROACHES FROM THE WEST. SEVERE THUNDERSTORMS ARE NOT EXPECTED DUE
TO LIMITED INSTABILITY. A MARGINAL RISK FOR A STRONG STORM MAY EXIST
ON SUNDAY JUST AHEAD OF THE FRONT. HOWEVER...BY THAT POINT THE
HIGHER SHEAR VALUES WILL HAVE MOVED AWAY FROM THE AREA. AT THIS
TIME...THE PRIMARY THREAT WILL BE LOCALLY HEAVY RAINFALL AMOUNTS
WITH A GENERAL 1 TO 3 INCHES EXPECTED...ISOLATED HIGHER TOTALS
ESPECIALLY ACROSS WESTERN AREAS. /13

LONG TERM [MONDAY THROUGH FRIDAY]...THE COLD FRONT WILL MOVE EAST
OF THE AREA SUNDAY NIGHT/MONDAY MORNING WITH A DRIER AND COOLER
AIRMASS MOVING INTO THE AREA THROUGH THE MIDDLE OF NEXT WEEK. RAIN
CHANCES RETURN LATE IN THE WEEK AS ANOTHER AREA OF LOW PRESSURE
DEVELOPS OVER THE NORTHWESTERN GULF AND MOVES NORTHEAST IN RESPONSE
TO AN UPPER TROUGH MOVING INTO THE SOUTHERN PLAINS. HIGH TEMPS WILL
BE IN THE UPPER 50S AND LOWER 60S THROUGH THE PERIOD. LOWS WILL
GENERALLY BE IN THE 40S AND 50S. /13

MARINE...HIGH PRESSURE OVER THE AREA GRADUALLY SHIFTS EAST AS A COLD
FRONT APPROACHES FROM THE WEST. IN RESPONSE...MODERATE EASTERLY FLOW
GRADUALLY BECOMES SOUTHEASTERLY BY SATURDAY AFTERNOON AND TURNS
SOUTHERLY SATURDAY NIGHT. A MODERATE NORTHWESTERLY FLOW FOLLOWS IN
THE WAKE OF THE COLD FRONT SUNDAY NIGHT. A NORTHERLY FLOW WILL THEN
PERSIST THROUGH MID WEEK. /08 JW

&&

.PRELIMINARY POINT TEMPS/POPS...
MOBILE      51  65  62  72  53 /  20  80  70  60  50
PENSACOLA   50  65  62  73  57 /  10  50  50  40  50
DESTIN      52  65  63  72  60 /  10  40  40  40  50
EVERGREEN   41  64  57  72  53 /  10  70  70  70  60
WAYNESBORO  44  63  58  68  49 /  40 100  90  90  50
CAMDEN      41  62  55  71  50 /  20  80  80  80  70
CRESTVIEW   40  64  58  74  56 /  10  40  50  40  60

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
FL...NONE.
MS...NONE.
GM...SMALL CRAFT ADVISORY UNTIL 6 AM SATURDAY FOR THE FOLLOWING
     ZONES: COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS
     OUT 20 NM...WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM
     20 TO 60 NM...

&&

$$







USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.