839
FXUS62 KMFL 181952
AFDMFL
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
252 PM EST TUE FEB 18 2025
..NEW LONG TERM
SHORT TERM
(REST OF TODAY THROUGH WEDNESDAY)
ISSUED AT 1203 PM EST TUE FEB 18 2025
MESOANALYSIS INDICATES THE CONTINUED PRESENCE OF A DIFFUSE AND
FRONTOLYTIC SURFACE BOUNDARY JUST TO THE SOUTH OF THE REGION OVER
THE FLORIDA KEYS. AN ENVELOPE OF DEEPER PRECIPITABLE WATER REMAINS
ENTRENCHED ON THE NORTHERN SIDE OF THE BOUNDARY WHICH WILL SUPPORT
THE POTENTIAL FOR SHOWER ACTIVITY ALONG THE EAST COAST METRO AREAS
THIS AFTERNOON. CONTINUED MOISTURE TRANSPORT VIA EASTERLY FLOW WILL
RESULT IN A CONTINUED POTENTIAL OF PRECIPITATION CHANCES IN THE 20-
30% BALLPARK ACROSS THE EAST COAST METRO AREAS THROUGH THE EARLY
EVENING HOURS. WHILE SCATTERED SHOWERS MAY BE ABUNDANT IN NATURE,
RESIDUAL DRY AIR IN THE COLUMN AND A LACK OF INSTABILITY WILL KEEP
THE POTENTIAL OF THUNDERSTORM ACTIVITY RATHER LIMITED, PERHAPS
CONFINED TO THE NEARSHORE ATLANTIC GULFSTREAM WATERS. AMPLE CLOUD
COVER AND SHOWER ACTIVITY WILL RESULT IN COOLER HIGH TEMPERATURES
(UPPER 70S TO LOW 80S) ALONG THE EAST COAST WITH WARMER HIGH
TEMPERATURES (MID 80S) EXPECTED ACROSS INLAND SOUTHWESTERN
FLORIDA. WITH DECOUPLING OF THE VERTICAL COLUMN OVERNIGHT AND
RESIDUAL SURFACE MOISTURE, PATCHES OF DENSE FOG ARE POSSIBLE
ACROSS INLAND LOCALES BEFORE AND DURING DAYBREAK ON WEDNESDAY. IT
WILL FEEL UNSEASONABLY WARM ALONG THE IMMEDIATE EAST COAST
OVERNIGHT THANKS TO THAT LIGHT EASTERLY BREEZE WITH TEMPERATURES
IN THE LOW TO MID 60S EXPECTED ELSEWHERE.
AS WE MOVE INTO WEDNESDAY, WINDS WILL START TO VEER SOUTHERLY AND
INCREASE AS A LONGWAVE TROUGH TRACKS ACROSS THE EASTERN SEABOARD AND
ITS ASSOCIATED COLD FRONTAL BOUNDARY WILL PUSH SOUTHEASTWARDS
TOWARDS THE FLORIDA PENINSULA. THE SOUTHERLY FLOW WILL SET THE STAGE
FOR AMPLE WAA (WARM AIR ADVECTION) ACROSS THE REGION WHICH MAY
RESULT IN HIGH TEMPERATURES APPROACHING CLIMATOLOGICAL RECORD HIGHS.
NBM QMD DATA IN CONJUNCTION WITH LREF GUIDANCE HINTS AT THE POTENTIAL
OF TEMPERATURES REACHING THE LOW TO MID 80S ALONG THE EAST COAST OF
SOUTH FLORIDA WITH SOME INLAND SUBURBS POTENTIALLY REACHING THE
UPPER 80S. A PURE SOUTHERLY FLOW IN THIS REGIME (WARM SECTOR OF AN
APPROACHING COLD FRONT) FAVORS THE WARMEST TEMPERATURES NEAR LAKE
OKEECHOBEE AND ACROSS INLAND AREAS OF THE REGION. AS THE FRONTAL
BOUNDARY ADVECTS EASTWARD ACROSS THE GULF OF MEXICO, SYNOPTIC
SUPPORT IN THE FORM OF MID-LEVEL SHORTWAVE WILL EJECT TO THE
NORTHEAST AWAY FROM THE SURFACE BOUNDARY. THIS WILL ACT TO CUT
SUPPORT FOR A LINE OF SHOWERS AND THUNDERSTORMS OVER THE GULF AND
ALLOW FOR A WEAKENING TREND OF CONVECTION AS IT APPROACHES THE
PENINSULA.
LONG TERM
(WEDNESDAY NIGHT THROUGH NEXT MONDAY)
ISSUED AT 249 PM EST TUE FEB 18 2025
WITH WEDNESDAY'S FRONTAL PASSAGE, THERE WILL BE SOME LINGERING LIGHT
SHOWERS OVERNIGHT, IN ADDITION TO MILD LOW TEMPERATURES. THE BEST
CHANCES FOR SHOWERS WILL BE IN THE NORTHERN PORTION OF THE CWA,
BY LAKE OKEECHOBEE, AND OVER THE GULF WATERS. FOLLOWING THE COLD
FRONT'S PASSAGE WEDNESDAY NIGHT/EARLY THURSDAY, ENSEMBLE MODELS
ARE FORECASTING A QUIET WEATHER PATTERN FOR THE LATTER HALF OF THE
WEEK INTO SATURDAY WITH THE INFLUENCE OF MID-LEVEL ZONAL RIDGING
AND SURFACE HIGH PRESSURE. WITH THE INFLUX OF COOLER AIR, DUE TO
NORTHERLY FLOW FROM THE FRONTAL PASSAGE, TEMPERATURES WILL DROP TO
NEAR, OR JUST BELOW, NORMAL. AFTERNOON HIGHS WILL KEEP IN THE LOW
TO MID 70S ACROSS SOUTH FLORIDA ON THURSDAY AND FRIDAY. THE
COOLER AIR WILL BE MORE IMPACTFUL OVERNIGHT WITH THE POTENTIAL FOR
THURSDAY NIGHT LOWS DROPPING INTO THE MID-40S ACROSS PORTIONS OF
THE NORTHERN INTERIOR, NEAR THE LAKE. THERE IS STILL MODERATE
UNCERTAINTY OF HOW MUCH RADIATIONAL COOLING WILL OCCUR, BUT BELOW
NORMAL OVERNIGHT LOWS CAN BE EXPECTED ON THURSDAY AND FRIDAY
NIGHTS.
BEYOND SATURDAY, LONG TERM GUIDANCE IS SUGGESTING THE RETURN TO
ACTIVE WEATHER WITH A TROUGH PROGRESSING ACROSS THE GULF AND MOVING
INTO THE FLORIDA PENINSULA. WITH CONTINUING DISAGREEMENT AMONGST THE
MODELS, TIMING AND DETAILS ARE NOT CERTAIN. HOWEVER, ENSEMBLES ARE
SHOWING THAT THERE WILL BE PLENTIFUL MOISTURE TO SUPPORT THE RETURN
OF WET CONDITIONS (20-30% CHANCE) WITH PWATS 1.5-1.7", AS WELL AS
TEMPERATURES REMAINING IN THE 70S EACH AFTERNOON EARLY NEXT WEEK. AS
TIME APPROACHES AND CERTAINTY GROWS, WE WILL PROVIDE MORE DETAILS.
AVIATION
(18Z TAFS)
ISSUED AT 1203 PM EST TUE FEB 18 2025
SCT TO BKN MVFR CEILINGS THROUGHOUT THE DAY, WITH SOME SCATTERED
COASTAL SHOWERS POSSIBLE THIS AFTERNOON THROUGH THE EVENING. WINDS
WILL REMAIN OUT OF A E/SE 7-12 KTS ACROSS THE EAST COAST AND A
WESTERLY GULF BREEZE CONTINUING AT APF. PATCHES OF DENSE FOG MAY
IMPACT INLAND TERMINALS OVERNIGHT.
MARINE
ISSUED AT 1203 PM EST TUE FEB 18 2025
GENERALLY BENIGN CONDITIONS TODAY WITH WINDS AT 10-15 KTS AND SEAS
AT 2-4 FEET. THERE WILL BE CHANCES FOR A FEW SHOWERS TODAY, MAINLY
OVER THE ATLANTIC WATERS. WINDS WILL INCREASE IN THE ATLANTIC ON
WEDNESDAY BACK TO NEAR CAUTIONARY LEVELS AT 15-20 KTS WITH SOME
GUSTS UP TO 20-25 KTS, BUT SEAS SHOULD REMAIN AT 2-4 FEET.
BEACHES
ISSUED AT 1203 PM EST TUE FEB 18 2025
A HIGH RISK FOR RIP CURRENTS IS IN EFFECT FOR THE PALM BEACHES WITH
A MODERATE RISK FOR THE REST OF THE ATLANTIC BEACHES TODAY.
AN ELEVATED RISK IS LIKELY TO CONTINUE FOR THE REST OF THIS WEEK AS
WELL.
PRELIMINARY POINT TEMPS/POPS
MIAMI 70 85 68 79 / 20 0 0 10
WEST KENDALL 66 87 65 80 / 20 0 0 10
OPA-LOCKA 68 87 66 80 / 20 0 0 10
HOMESTEAD 68 84 67 80 / 20 0 0 10
FORT LAUDERDALE 68 84 67 77 / 20 0 10 10
N FT LAUDERDALE 68 85 66 77 / 20 10 10 10
PEMBROKE PINES 69 89 68 80 / 20 0 10 10
WEST PALM BEACH 68 85 65 75 / 20 10 10 10
BOCA RATON 68 86 66 76 / 20 10 10 10
NAPLES 65 83 66 75 / 0 10 20 10
MFL WATCHES/WARNINGS/ADVISORIES
FL...HIGH RIP CURRENT RISK UNTIL 7 PM EST THIS EVENING FOR FLZ168.
AM...NONE.
GM...NONE.
SHORT TERM...HADI
LONG TERM....JS
AVIATION...HADI
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