826
FXUS62 KMLB 041751
AFDMLB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
151 PM EDT FRI JUL 4 2025
..NEW AVIATION
KEY MESSAGES
ISSUED AT 141 AM EDT FRI JUL 4 2025
- HOLIDAY WEEKEND PLANS WILL BE ACCOMPANIED BY NUMEROUS SHOWERS
AND STORMS AS PLENTIFUL MOISTURE AND NEARBY LOW PRESSURE AFFECT
THE STATE. THE HIGHEST COVERAGE WILL BE IN THE AFTERNOON AND
EVENING HOURS.
- THE LOW PRESSURE SYSTEM EAST OF JACKSONVILLE HAS A MEDIUM (60%)
CHANCE OF BECOMING A TROPICAL OR SUBTROPICAL DEPRESSION.
REGARDLESS OF DEVELOPMENT, LOCALIZED FLOODING IS THE PRIMARY
THREAT FOR EAST CENTRAL FLORIDA.
- MORE TYPICAL SUMMERTIME COVERAGE OF AFTERNOON AND EVENING
STORMS RETURN NEXT WEEK ALONG WITH INCREASING HEAT AND HUMIDITY.
PREVIOUS DISCUSSION
ISSUED AT 141 AM EDT FRI JUL 4 2025
-----------SYNOPTIC OVERVIEW-----------
BROAD CYCLONIC FLOW IS IN PLACE OVER FLORIDA TONIGHT AS A WEAK LOW
PRESSURE SYSTEM (AL92) SITS IMMEDIATELY OFFSHORE OF NE FLORIDA AND A
MID-LEVEL TROUGH REMAINS ESSENTIALLY OVERHEAD. THIS DISTURBANCE IS
COMBINING FORCES WITH ANOMALOUS TROPICAL MOISTURE AND AN UNCAPPED
TROPOSPHERE TO SPAWN NUMEROUS ROUNDS OF CONVECTION, PARTICULARLY
DURING PEAK DIURNAL HEATING.
STEERING FLOW IS SEASONABLY WEAK AT OUR LATITUDE, ALLOWING LITTLE
MOVEMENT OF THESE FEATURES OVER THE NEXT 48 HOURS. THE NHC
INDICATES A MEDIUM CHANCE OF TROPICAL OR SUBTROPICAL DEVELOPMENT
OVER THE NEXT COUPLE DAYS TO THE NORTH OF OUR LOCAL ATLANTIC
WATERS.
BY LATE SUNDAY, ENSEMBLES SUGGEST THAT THE AREA OF LOW PRESSURE AND
ASSOCIATED DEEP MOISTURE SHOULD BEGIN TO LIFT TOWARD THE CAROLINAS.
HOWEVER, SEASONABLY HIGH TOTAL MOISTURE SHOULD REMAIN IN PLACE OVER
THE PENINSULA. H5 HEIGHTS ARE EXPECTED TO BUILD ABOVE NORMAL INTO
NEXT WEEK, BUT THE NEAR-SURFACE RIDGE AXIS IS FORECAST TO ONLY LIFT
TO NEAR CENTRAL FLORIDA BY TUESDAY. THIS PORTENDS A RETURN TO FAIRLY
TYPICAL SUMMERTIME WEATHER.
-------SENSIBLE WEATHER & IMPACTS-------
TODAY (INDEPENDENCE DAY)...
UNFORTUNATELY, OUTDOOR PLANS TODAY WILL ONCE AGAIN BE GREETED BY
INCREASING COVERAGE OF RAIN AND STORMS BY AFTERNOON AND EVENING. THE
OVERALL PATTERN IS ESSENTIALLY UNCHANGED FROM THE LAST COUPLE OF
DAYS. EXPECT AT LEAST 80% AREAL COVERAGE OF SHOWERS/STORMS, PEAKING
AROUND 3-7 PM. LINGERING RAIN AREAS AND EMBEDDED THUNDER WILL
PERSIST AFTER SUNSET THOUGH THE INTENSITY SHOULD BE ON THE DECLINE.
PRIMARY HAZARDS FROM TODAY'S SHOWERS AND STORMS REMAIN OCCASIONAL
DEADLY LIGHTNING STRIKES AND TORRENTIAL RAINFALL LEADING TO
LOCALIZED FLOODING. WE DID PICK UP SOME ISOLATED 4" RAIN TALLIES
LAST EVENING; THIS IS A REASONABLE WORST-CASE SCENARIO THAT PERSISTS
FOR TODAY'S STORMS AS WELL. A FEW WIND GUSTS FROM 35-45 MPH HAVE A
LOW CHANCE OF ACCOMPANYING THE STRONGEST STORMS.
OUTLINING THE HIGHEST COVERAGE AREAS REMAINS SOMEWHAT DIFFICULT.
HOWEVER, HI-RES GUIDANCE DOES HIGHLIGHT THE I-4 CORRIDOR YET AGAIN
IN THE LATE AFTERNOON AND EARLY EVENING, LIKELY DUE TO INTERACTION
WITH A WEAK SEA BREEZE AND PROXIMITY TO THE AREA OF LOW PRESSURE AND
DEEPEST MOISTURE. BE SURE TO HAVE A PLACE TO GET INDOORS IF YOU HEAR
THUNDER!
HIGHS IN THE MID/UPPER 80S WILL FEEL LIKE THE MID/UPPER 90S DUE TO
THE TROPICAL HUMIDITY.
WEEKEND...
LOW PRESSURE TO OUR NORTH AND RESIDUAL TROPICAL MOISTURE WILL KEEP
US ON THE UNSETTLED SIDE. EXPECT ABOVE NORMAL COVERAGE OF SHOWERS
AND STORMS. BROAD SOUTHWESTERLY FLOW SHOULD PROMOTE HIGHER COVERAGE
OVER THE EASTERN HALF OF THE PENINSULA EACH AFTERNOON. LOCALLY HEAVY
RAIN LEADING TO MINOR FLOODING REMAINS OUR PRIMARY HAZARD ALONG WITH
OCCASIONAL TO FREQUENT LIGHTNING STRIKES. BY SUNDAY, THE HIGHEST
CHANCE FOR STORMS MAY BEGIN TO FAVOR THE COAST.
EXPECT SEASONABLY HOT UPPER 80S TO LOW 90S AND HEAT INDICES
EXCEEDING 100F, PARTICULARLY ON SUNDAY.
NEXT WEEK...
WELL, WE FINALLY GET A REPRIEVE FROM THE STAGNANT WEATHER PATTERN AS
HIGH PRESSURE OVERTAKES THE STATE. HOWEVER, SEASONABLE MOISTURE
VALUES AND MORE INTENSE DAYTIME HEATING SHOULD CONTINUE TO SPARK
SCATTERED AFTERNOON AND EVENING SHOWERS AND STORMS (50-70%), WITH
THE HIGHEST COVERAGE OVER THE INTERIOR. HOWEVER, SOME OF THIS
ACTIVITY WILL LIKELY MAKE IT TO THE COAST ESPECIALLY AS ONE
TRAVELS NORTHWARD. THIS LOOKS LIKE A MORE TYPICAL SUMMERTIME
PATTERN FOR THE SUNSHINE STATE.
WITH MORE MORNING AND EARLY AFTERNOON SUNSHINE, THE HEAT WILL BECOME
A FACTOR YET AGAIN FOR US. WIDESPREAD LOW AND MID 90S ARE LIKELY
WITH HEAT INDICES FROM 101-106F AND AT LEAST A MODERATE HEATRISK.
MARINE
ISSUED AT 141 AM EDT FRI JUL 4 2025
WEAK LOW PRESSURE NORTH OF THE VOLUSIA COAST SHOULD PUSH FARTHER NORTH
OF THE LOCAL WATERS THROUGH THE WEEKEND, ALLOWING MODERATE SOUTHERLY
TO SOUTHWESTERLY BREEZES. SCATTERED TO NUMEROUS SHOWERS AND
STORMS ARE FORECAST. BY EARLY NEXT WEEK, HIGH PRESSURE BEGINS TO
PUSH NORTH FROM THE FLORIDA STRAITS, REACHING THE LOCAL ATLANTIC
AND BECOMING NEARLY STATIONARY.
GENERALLY FAVORABLE NEARSHORE SEAS OUTSIDE OF STORMS, 2-3 FT THROUGH
SATURDAY, THEN UP TO 3-5 FT WELL OFFSHORE SUNDAY BEFORE DECREASING
ON MONDAY.
AVIATION
(18Z TAFS)
ISSUED AT 137 PM EDT FRI JUL 4 2025
SCATTERED SHOWERS AND EMBEDDED THUNDERSTORMS WILL BECOME NUMEROUS
BETWEEN 18-19Z THIS AFTERNOON, WITH ALL TERMINALS SOON TO EXPERIENCE
MVFR/IFR CONDITIONS AS CONVECTION DEVELOPS. HIGHEST CONFIDENCE WILL
BE FROM KMCO SOUTHWARD, WHERE WIND GUSTS OVER 35 KNOTS AND
TORRENTIAL DOWNPOURS CANNOT BE RULED OUT. ALL TERMINALS HAVE TEMPO
FOR THUNDERSTORM CONDITIONS, ENDING BETWEEN 22Z AND 00Z THIS
EVENING. LIGHT PREVAILING WINDS OVERNIGHT BECOMING SOUTHWESTERLY BY
DAYBREAK, WITH ANOTHER ROUND OF WIDESPREAD SHOWERS AND THUNDERSTORMS
ANTICIPATED AGAIN TOMORROW.
PRELIMINARY POINT TEMPS/POPS
DAB 74 88 74 90 / 40 80 30 70
MCO 75 88 75 90 / 50 80 40 70
MLB 74 89 75 91 / 60 80 40 60
VRB 71 90 71 92 / 50 80 30 60
LEE 74 87 75 88 / 40 80 40 70
SFB 75 89 75 91 / 40 80 40 70
ORL 75 88 75 90 / 50 80 40 70
FPR 71 90 72 91 / 50 80 30 60
MLB WATCHES/WARNINGS/ADVISORIES
FL...NONE.
AM...NONE.
DISCUSSION...HEIL
AVIATION...SCHAPER
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