532
FXUS62 KMFL 300544
AFDMFL
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
144 AM EDT WED SEP 30 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 139 AM EDT WED SEP 30 2026
- MINOR AND MODERATE COASTAL FLOODING CONTINUES ACROSS SOUTHEAST
FL DURING HIGH TIDE CYCLES TODAY. CONDITIONS GRADUALLY IMPROVE
STARTING TONIGHT.
- CHANCES OF SHOWERS AND THUNDERSTORMS INCREASE ACROSS SOUTH
FLORIDA TODAY, WITH A MEDIUM CHANCE (50-60%) MAINLY SOUTH OF
ALLIGATOR ALLEY.
UPDATE
ISSUED AT 126 PM EDT TUE SEP 29 2026
THE FIRST ROUND OF RAINFALL FOR THE DAY IS WINDING DOWN AS
ACTIVITY PUSHES OFFSHORE. A LULL IN RAINFALL COVERAGE IS LIKELY AT
LEAST FOR THE NEXT COUPLE OF HOURS BEFORE AN ADDITIONAL ROUND OF
SHOWERS AND STORMS WILL BE POSSIBLE. ALTHOUGH THIS SCENARIO IS
CONDITIONAL ON WHETHER OR NOT THE AIRMASS IS ABLE TO DESTABILIZE,
AND WITH AMPLE CLOUD COVER CURRENTLY OVER THE EAST COAST METRO,
NOT SUPER BULLISH ON THIS POTENTIAL. HIGHER CHANCES OF SHOWERS AND
STORMS FOR THE REMAINDER OF THE AFTERNOON AND EVENING PERSIST FOR
SOUTHWEST FLORIDA AND ESPECIALLY FOR LOCAL GULF AND SOUTHERN
WATERS.
SHORT TERM
(TODAY THROUGH WEDNESDAY)
ISSUED AT 259 AM EDT TUE SEP 29 2026
A GRADUAL TRANSITION TOWARDS MORE WET AND UNSETTLED CONDITIONS
BEGINS TODAY. A MID-LEVEL SHORTWAVE IMPULSE WILL APPROACH FROM THE
GULF; AS IT DOES, SOUTHERLY TO SOUTHWESTERLY FLOW ALONG THE
ATMOSPHERIC COLUMN WILL USHER A MOISTURE-RICH AIRMASS OVER THE AREA,
WITH PWATS EXPECTED TO RISE BACK INTO THE 1.8-2.0 INCH RANGE. SPC'S
MESOANALYSIS ALREADY SHOWS THIS HAPPENING, WITH ANALYZED PWATS OVER
THE AREA UP INTO THE 1.6-1.8 INCH RANGE AS OF 06Z. LATER TODAY, THE
INFLUENCE OF THIS IMPULSE AND THE INCREASE IN MOISTURE ACROSS THE
AREA WILL ALLOW FOR THE RETURN OF SCATTERED SHOWERS AND
THUNDERSTORMS ACROSS SOUTH FLORIDA (WITH POPS IN THE 50-60% RANGE).
WHILE MOST OF THE ACTIVITY LOOKS LIKE IT STAYS SOUTH OF OUR AREA,
CAMS ARE STILL SUGGESTING ISOLATED TO SCATTERED ACTIVITY BEGINNING
SHORTLY AFTER DAYBREAK, STARTING ACROSS SOUTHWEST FL AND DRIFTING
EASTWARD ACROSS THE REGION.
THE MIDLEVEL IMPULSE WILL LINGER OVER THE GULF OVERNIGHT AND INTO
WEDNESDAY, CONTINUING TO PROMOTE UNSTABLE AND HUMID CONDITIONS
ACROSS SOUTH FLORIDA. COVERAGE LOOKS TO BE A BIT MORE SPARSE
THROUGHOUT THE DAY COMPARED TO TODAY, BUT POPS REMAIN IN THE 50-60%
RANGE, SUPPORTED BY HIGH-RES ENSEMBLE GUIDANCE.
INCREASING CLOUD COVERAGE OVER THE AREA WILL HELP KEEP HIGH
TEMPERATURES IN THE MID 80S TODAY, WHILE OVERNIGHT LOWS WILL DROP
INTO THE LOW TO MID 70S. WARMER CONDITIONS ARE EXPECTED ON
WEDNESDAY.
LONG TERM
(WEDNESDAY NIGHT THROUGH MONDAY)
ISSUED AT 259 AM EDT TUE SEP 29 2026
MID-LEVEL RIDGING WILL BEGIN TO BUILD ON WEDNESDAY NIGHT AS THE MID-
LEVEL IMPULSE GETS DRAGGED NORTHWARD WITH THE MEAN FLOW. NEAR THE
SURFACE, HIGH PRESSURE WILL CONTINUE TO BUILD ACROSS THE WESTERN
ATLANTIC INTO THE WEEKEND, BRINGING THE RETURN OF EASTERLY TO
SOUTHEASTERLY FLOW ACROSS THE AREA. MOISTURE ADVECTION WILL
CONTINUE, WITH PWATS FORECAST TO CONTINUE HOVERING NEAR 2 INCHES
THROUGH THE PERIOD. THIS PATTERN WILL PROMOTE CONTINUED SCATTERED TO
WIDESPREAD SHOWER AND THUNDERSTORM DEVELOPMENT EACH AFTERNOON. STORM
ACTIVITY WILL LIKELY FAVOR INTERIOR AND SOUTHWESTERN FLORIDA DUE TO
THE STRONGER EASTERLY FLOW DURING THE LATTER HALF OF THE WEEK.
CONDITIONS COULD BECOME A BIT WINDY AS WELL TOWARDS THE WEEKEND AS A
FRONTAL BOUNDARY SETTLES ACROSS THE SOUTHEASTERN US; ITS PROXIMITY
TO THE SURFACE HIGH WILL HELP TIGHTEN UP THE PRESSURE GRADIENT
ACROSS THE REGION.
THERE IS INCREASING CONFIDENCE THAT TEMPERATURES WILL INCREASE BACK
INTO THE UPPER 80S AND LOW 90S AREAWIDE OVER THE WEEKEND, ESPECIALLY
AS EASTERLY FLOW AND MOISTURE RETURN INCREASE.
AVIATION
(06Z TAFS)
ISSUED AT 139 AM EDT WED SEP 30 2026
VFR CONDITIONS PREVAIL OVERNIGHT, WITH LIGHT AND VARIABLE WINDS
ACROSS THE AREA. THE FORECAST BECOMES MORE UNCERTAIN AFTER 11Z,
WHEN GUIDANCE SUGGESTS SHRA/TSRA COULD APPROACH THE EAST COAST,
WITH IMPACTS AND SUB-VFR CONDITIONS FOR ALL EAST COAST TERMINALS
POSSIBLE. ADDED PROB30 GROUPS TO ACCOUNT FOR THAT POSSIBILITY.
CONDITIONS COULD REMAIN UNSETTLED THE REST OF THE AFTERNOON AND
OVERNIGHT, BUT CONFIDENCE REMAINS LOW AT THIS TIME. WINDS WILL
INCREASE OUT OF THE EAST AFTER DAYBREAK, RANGING FROM 5-10 KTS.
MARINE
ISSUED AT 259 AM EDT TUE SEP 29 2026
LIGHT SOUTHERLY WINDS WILL PREVAIL ACROSS ALL LOCAL WATERS TODAY,
GRADUALLY BECOMING MORE EASTERLY ON WEDNESDAY AS SURFACE HIGH BUILDS
OVER THE WESTERN ATLANTIC. SEAS SHOULD REMAIN IN THE 1-3 FEET RANGE.
ISOLATED TO SCATTERED SHOWERS WILL DEVELOP EACH DAY, WHICH MAY
RESULT IN LOCALLY HAZARDOUS WINDS AND SEAS. BRISK CONDITIONS RETURN
LATE WEEK.
BEACHES
ISSUED AT 259 AM EDT TUE SEP 29 2026
COASTAL FLOODING REMAINS LIKELY ALONG THE SOUTHEASTERN AND SOUTHERN
COASTLINES DURING THE HIGH TIDE CYCLES TODAY. OBSERVATIONS CONTINUE
TO OUT-PERFORM GUIDANCE BY A DECENT MARGIN, LEADING US TO ANTICIPATE
TIDAL GAUGES TO REACH MODERATE ONCE AGAIN TODAY. AS SUCH, A COASTAL
FLOOD ADVISORY REMAINS IN EFFECT FOR THE ATLANTIC COASTLINE, WHILE A
COASTAL FLOOD STATEMENT REMAINS IN EFFECT FOR MAINLAND MONROE,
WHERE MINOR STAGE COASTAL FLOODING COULD BE POSSIBLE.
TIDAL FORECASTS ARE LOWER FOR THIS EVENING AND TOMORROW, BUT THE
TIDAL GUIDANCE IS PERFORMING VERY POORLY, SO NOT PUTTING A TON OF
WEIGHT ON IT FOR FORECASTING. ERRING ON THE SIDE OF CAUTION AND
CONTINUING THE COASTAL FLOOD ADVISORY THROUGH WEDNESDAY MORNING AS
MODERATE FLOODING COULD STILL BE POSSIBLE TONIGHT AND TOMORROW
DURING HIGH TIDE, ESPECIALLY WITH THE ELEVATED RAIN CHANCES.
PRELIMINARY POINT TEMPS/POPS
MIAMI 87 78 87 79 / 50 50 80 60
WEST KENDALL 86 77 87 78 / 50 50 70 60
OPA-LOCKA 87 77 87 78 / 50 50 70 60
HOMESTEAD 87 77 88 79 / 60 50 80 70
FORT LAUDERDALE 87 78 87 78 / 50 60 80 70
N FT LAUDERDALE 87 78 87 79 / 40 60 80 70
PEMBROKE PINES 87 77 87 78 / 50 50 70 60
WEST PALM BEACH 88 77 88 78 / 40 50 70 60
BOCA RATON 87 77 88 78 / 40 60 80 70
NAPLES 88 74 88 75 / 60 30 80 30
MFL WATCHES/WARNINGS/ADVISORIES
FL...COASTAL FLOOD ADVISORY UNTIL 8 AM EDT THIS MORNING FOR FLZ168-
172-173.
AM...NONE.
GM...NONE.
SHORT TERM...ATV
LONG TERM....ATV
AVIATION...ATV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page