747
FXUS64 KMOB 201945
AFDMOB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE KEY WEST FL
145 PM CST FRI DEC 20 2024
..NEW NEAR TERM, SHORT TERM, LONG TERM, MARINE
NEAR TERM
(NOW THROUGH SATURDAY NIGHT)
ISSUED AT 1250 PM CST FRI DEC 20 2024
WATER VAPOR IMAGERY HIGHLIGHTS A BROAD CYCLONIC GYRE OVER THE
EASTERN U.S., ROOTED NEAR THE OHIO RIVER VALLEY AND EXTENDING
SOUTH TO THE TIP OF SOUTHERN FLORIDA. A POTENT SWATH OF SUBSIDENCE
EXTENDS FROM THE RED RIVER VALLEY TO THE NORTHEASTERN GULF OF
MEXICO. NO WONDER SKIES ARE SUNNY AND THE KMOB RADAR IS VOID OF
ECHOES THIS AFTERNOON. TEMPERATURES ARE IN THE 60S ACROSS THE
AREA, COMPLIMENTED BY DEWPOINTS THAT HAVE FALLEN 10 DEGREES OR
MORE SINCE THIS MORNING. A COOL AND CRISP END TO THE WEEK.
THE CYCLONIC GYRE OVER THE EASTERN U.S. WILL SLIDE EAST OVER THE
WEEKEND, MEANWHILE THE CONTINENTAL-POLAR AIR MASS CENTERED OVER
THE CANADIAN PRAIRIES WILL SPILL TO THE SOUTHEAST INTO THE
APPALACHIANS. STRONG COLD AIR ADVECTION WILL DROP TEMPERATURES
BELOW FREEZING TONIGHT, EXCEPT FOR LOCATIONS ADJACENT TO THE GULF
OF MEXICO. INTERIOR LOCATIONS WILL FALL INTO THE UPPER 20S. AS THE
COOL AND DENSE AIR SPILLS INTO THE GULF, NORTHWEST TO NORTH WINDS
WILL PEAK IN THE LOW 20S KNOTS, SO A SMALL CRAFT ADVISORY IS IN
EFFECT. TEMPERATURES WILL CLIMB INTO THE 50S ON SATURDAY FOLLOWED
BY ANOTHER COLD NIGHT AMPLIFIED BY RADIATIONAL COOLING. SOME
INTERIOR LOCATIONS WILL FALL INTO THE MID 20S SATURDAY NIGHT.
/CLR
SHORT THROUGH EXTENDED TERMS...
(SUNDAY NIGHT THROUGH FRIDAY)
ISSUED AT 1250 PM CST FRI DEC 20 2024
THE WEAKENING REX BLOCK OVER THE WESTERN US WILL BREAKDOWN THIS
WEEKEND AS THE DISTAL END OF AN ATMOSPHERIC RIVER EVENT SMASHES
ACROSS THE SIERRA NEVADA AND ROCKY MOUNTAINS. A SERIES OF PACIFIC
SHORT WAVES WILL LOWER HEIGHTS ACROSS MEXICO AND THE SOUTHERN
PLAINS MONDAY THROUGH WEDNESDAY. MEANWHILE, STEERING FLOW AND
SURFACE WINDS WILL SHIFT TO SOUTH OF EAST, LEADING TO A STEADY
MOISTENING OF THE VERTICAL PROFILE. RAIN AND THUNDER CHANCES WILL
RETURN TO THE FORECAST BY TUESDAY OR TUESDAY NIGHT. THE DETAILS
REMAIN MURKY FOR WEDNESDAY THROUGH FRIDAY, ESPECIALLY GIVEN THE
SQUIRRELY PACIFIC SHORT WAVES IN THE SOUTHERN STREAM.
NEVERTHELESS, RAIN AND THUNDER CHANCES REMAIN INTO NEXT WEEKEND,
WITH NO SIGNS OF ADDITIONAL COLD FRONTS.
A MODERATE RISK OF RIP CURRENTS REMAINS FOR TUESDAY AND BEYOND DUE
TO THE ONSHORE FLOW. ADDITIONALLY, DEPENDING ON THE MESOSCALE
DETAILS OF OCCASIONAL PRECIPITATION, THE MOISTENING BOUNDARY
LAYER OVERTOP OF CHILLY NEARSHORE WATERS WILL FAVOR ROUNDS OF SEA
FOG. /CLR
MARINE
ISSUED AT 1250 PM CST FRI DEC 20 2024
A SMALL CRAFT ADVISORY IS IN EFFECT FOR AREA WATERS THIS AFTERNOON
AND TONIGHT DUE TO NORTHWEST TO NORTH WINDS PEAKING AS HIGH AS 20
TO 25 KNOTS. BREEZES WILL DIMINISH OVER THE WEEKEND WHILE
SHIFTING NORTHEASTERLY. A LIGHT TO MODERATE EAST TO SOUTHEAST
BREEZE THEN SETS UP MONDAY INTO MIDWEEK. /CLR
PRELIMINARY POINT TEMPS/POPS
MOBILE 32 53 31 56 36 63 42 68 / 0 0 0 0 0 0 0 0
PENSACOLA 35 53 35 56 39 60 45 67 / 0 0 0 0 0 0 0 10
DESTIN 37 55 39 58 42 61 48 67 / 0 0 0 0 0 0 0 10
EVERGREEN 29 51 28 56 30 60 36 65 / 0 0 0 0 0 0 0 0
WAYNESBORO 28 50 27 55 30 60 36 65 / 0 0 0 0 0 0 0 0
CAMDEN 28 48 26 52 30 57 34 63 / 0 0 0 0 0 0 0 0
CRESTVIEW 30 55 29 58 31 62 39 67 / 0 0 0 0 0 0 0 10
MOB WATCHES/WARNINGS/ADVISORIES
AL...NONE.
FL...NONE.
MS...NONE.
GM...SMALL CRAFT ADVISORY UNTIL 9 AM CST SATURDAY FOR GMZ630>636-650-
655-670-675.
THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
WWW.WEATHER.GOV/MOB
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