963
FXUS62 KMLB 291058
AFDMLB
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
658 AM EDT MON JUN 29 2026
..NEW AVIATION
KEY MESSAGES
ISSUED AT 224 AM EDT MON JUN 29 2026
- TURNING EVEN HOTTER TODAY, WITH HIGHS IN THE MID TO UPPER 90S AND
PEAK HEAT INDEX VALUES NEARING HEAT ADVISORY CRITERIA (108-110
DEGREES), ESPECIALLY NEAR TO NORTH OF ORLANDO.
- HOT AND MUGGY CONDITIONS CONTINUE THE REST OF THE WEEK AND INTO
THE HOLIDAY WEEKEND, WITH PEAK HEAT INDICES 100-107F EACH
AFTERNOON. WIDESPREAD MODERATE TO MAJOR HEATRISK FORECAST EACH
DAY.
- INCREASING MOISTURE WITH AN APPROACHING FRONT WILL LEAD TO A
RISE IN RAIN AND STORM CHANCES THROUGH AT LEAST MID-WEEK, WITH
SHOWER AND STORM COVERAGE REMAINING NEAR TO ABOVE NORMAL THROUGH
NEXT WEEKEND.
DISCUSSION
ISSUED AT 224 AM EDT MON JUN 29 2026
CURRENT-TONIGHT...MID-LEVEL RIDGING CENTERED OVER THE TENNESSEE &
MISSISSIPPI VALLEYS WILL SLOWLY TRANSITION NORTH TOWARD THE OHIO
VALLEY. AT THE SURFACE, WEAK HIGH PRESSURE RIDGING CONTINUES ACROSS
THE SOUTH-CENTRAL FL PENINSULA. WEAK LOW PRESSURE WILL DEVELOP OFF
OF THE CAROLINAS AND SLOWLY MOVE SOUTHEAST. AN ASSOCIATED WEAK
SURFACE BOUNDARY WILL ALSO SLIDE SOUTH MOVING INTO NORTH FL LATE IN
THE PERIOD. LIGHT/VARIABLE WINDS WILL TRANSITION ONSHORE ALONG THE
COAST LATE THIS MORNING AND EARLY AFTERNOON AS THE ECSB DEVELOPS AND
PUSHES WELL INLAND WITH LATE DAY/EARLY EVENING BOUNDARY COLLISIONS
ACROSS THE INTERIOR. ISOLD-WDLY SCT CONVECTION WILL DEVELOP ALONG
THE ECSB BY EARLY AFTERNOON WITH BOTH COVERAGE AND INTENSITY
INCREASING INTO THE INTERIOR THRU LATE DAY/EVENING. PRIMARY STORM
IMPACTS REMAIN FREQUENT LIGHTNING STRIKES, LOCALLY GUSTY WINDS OF 35-
50 MPH, AND TORRENTIAL DOWNPOURS. DUE TO THE SLOW/ERRATIC MOVEMENT
OF CELLS, MINOR/NUISANCE FLOODING WILL REMAIN ONE OF THE BIGGEST
STORM CONCERNS. QUICK 2-3" AMOUNTS MAY OCCUR WITH A FEW STORMS LATE
TODAY AND WILL BE HANDLED WITH FLOOD ADVISORIES AS NECESSARY.
CONVECTION WILL DIMINISH INTO MID-LATE EVENING, WITH SKIES THINNING
OVERNIGHT.
TODAY WILL PROBABLY BE THE HOTTEST DAY OF THE WEEK. L90S ARE
FORECAST ALONG THE IMMEDIATE SPACE/TREASURE COASTS, WITH M-U90S MOST
EVERYWHERE ELSE. HIGHEST READINGS LIKELY NEAR/NORTH OF I-4. AS SUCH,
WILL HOIST A HEAT ADVISORY FOR LAKE, VOLUSIA, SEMINOLE, ORANGE, AND
NORTH BREVARD COUNTIES FROM 12PM TO 7PM THIS EVENING. TEMPERATURES
COMBINED WITH HIGH HUMIDITY WILL DRIVE PEAK HEAT INDICES TO
106-109F WITHIN THE ADVISORY. PEAK HEAT INDICES OUTSIDE OF THE
ADVISORY WILL CLIMB TO 102-107F. WIDESPREAD MODERATE TO MAJOR
HEATRISK EXPECTED. IF YOU ARE PLANNING TO SPEND TIME OUTDOORS,
TAKE PLENTY OF BREAKS IN THE SHADE OR A/C AND STAY WELL-HYDRATED
TO AVOID HEAT-RELATED FATIGUE/ILLNESS. NEVER LEAVE PETS OR
CHILDREN IN VEHICLES UNATTENDED! WARM & HUMID AT NIGHT WITH LOWS
IN THE L-U70S.
TUE-WED...THE ATLC RIDGE AXIS SHIFTS SOUTH OF THE AREA AS A WEAK
FRONT CONTINUES TO SHIFT SOUTH BECOMING QUASI-STATIONARY NEAR THE
AREA ON TUE. WEAK LOW PRESSURE ALONG THIS FRONT WILL SHIFT WELL
OFFSHORE THE SOUTHEAST U.S. COAST THRU MIDWEEK. PIECES OF
SHORTWAVE ENERGY WILL SPIN CLOCKWISE AROUND THE MID-LEVEL HIGH
PRESSURE ACROSS THE OHIO VALLEY/APPALACHIA. ON TUE, SCT-NMRS (50-
70%) SHOWERS AND STORMS WILL DEVELOP ACROSS OUR NORTHERN CWA
(CLOSEST PROXIMITY TO THE FRONT) AND SPREAD SOUTHWARD DURING THE
DAY. WHILE THE STEERING FLOW IS OUT OF THE NORTH, THE ECSB WILL
DEVELOP AND GRADUALLY TAKE ACTIVITY DEEPER INTO THE INTERIOR
DURING THE AFTERNOON AND EARLY EVENING. A FEW STRONGER STORMS WILL
CONTINUE TO BE POSSIBLE, WITH SIMILAR HAZARDS OF STRONG WIND
GUSTS, FREQUENT LIGHTNING, SMALL HAIL, AND LOCALLY HEAVY RAINFALL.
DEEPER ONSHORE FLOW DEVELOPS ON WED WITH LOWEST RAIN CHANCES
ACROSS COASTAL VOLUSIA/BREVARD (20-30%) AND HIGHER CHANCES
SOUTHWARD AND INTO THE INTERIOR (30-80%).
TEMPS SLIGHTLY COOLER ON TUE L-M90S, WITH INCREASED CLOUD-COVER AND
PRECIP, BUT STILL WARM & HUMID AND PRESENTLY KEEPING CONDITIONS
BELOW ADVISORY CRITERIA BUT WILL CONTINUE TO MONITOR. FOR WED, U80S
TO AROUND 90F AT THE COAST AND L90S INLAND. PEAK HEAT INDICES STILL
102-107F FOR MOST. PERSISTENT WARM AND HUMID OVERNIGHT WITH MINS IN
THE 70S.
THU-SUN...THE WEAK LOW PRESSURE OFF OF THE SOUTHEAST U.S. CONTINUES
TO WEAKEN AS CONDITIONS BECOME LESS FAVORABLE FOR ANY DEVELOPMENT IN
THE EXTENDED. LIGHT ONSHORE FLOW BECOMES LIGHT SOUTHERLY WITH PWATS
REBOUNDING BACK UPWARD ACROSS ECFL. A DAILY ECSB IS FORECAST PUSHING
INLAND EACH AFTERNOON. STORM STEERING BECOMES LIGHT SOUTHERLY AS
WELL, BUT EXPECT ERRATIC MOVEMENT AT TIMES OF STORMS DUE TO VARIOUS
AND STRONG AFTN/EVENING BOUNDARY COLLISIONS. TEMPERATURES ALOFT ARE
RELATIVELY WARM BUT WITH DEEP MOISTURE AND DAYTIME HEATING, SHOULD
STILL MUSTER SCT TO LOCALLY NMRS STORM COVERAGE DIURNALLY.
SUMMERTIME IN FL CONTINUES WITH MAX TEMPS IN THE L90S AND ISOLD M90S
ALSO POSSIBLE. PEAK HEAT INDICES STILL IN THE 102-107F RANGE EACH
AFTERNOON. OVERNIGHT LOWS REMAIN WARM WITH CONDITIONS HUMID.
MARINE
ISSUED AT 224 AM EDT MON JUN 29 2026
THRU FRI...GENERALLY FAVORABLE BOATING CONDITIONS CONTINUE AS LIGHT
S/SSW FLOW TURNS ONSHORE EACH AFTERNOON ALONG THE COAST WITH THE
EAST COAST SEA BREEZE. WITH A WEAK PRESSURE GRADIENT IN PLACE, WINDS
GENERALLY 7-12 KTS OR LESS WITH SEAS 2-4 FT (UP TO 5 FT WELL
OFFSHORE NORTH OF THE CAPE BRIEFLY MIDWEEK). WINDS WILL TURN ONSHORE
MID-LATE WEEK BEHIND A WEAK FRONTAL BOUNDARY. LATE NIGHT/EARLY
MORNING SHOWERS AND ISOLATED LIGHTNING STORMS WILL TRANSITION INLAND
DURING THE AFTERNOON AND EARLY EVENING HOURS, THOUGH SOME PUSHBACK
OF EVENING STORMS COULD OCCUR EARLY THIS WEEK AS STORM MOTION
REMAINS SLOW/ERRATIC. WINDS/SEAS LOCALLY HIGHER INVOF STORMS.
AVIATION
(12Z TAFS)
ISSUED AT 650 AM EDT MON JUN 29 2026
LIGHT AND VARIABLE WINDS CONTINUE THROUGH THIS MORNING. SHOWER AND
STORM COVERAGE INCREASES AFTER 17Z, WITH VCTS/VCSH AT ALL
TERMINALS. PROB30S ACROSS THE INTERIOR TERMINALS BETWEEN 19-23Z
FOR VIS AND CIG REDUCTIONS DUE TO TSRA. CONDITIONS WILL IMPROVE
AREAWIDE AFTER 00Z, WITH MOSTLY DRY CONDITIONS AND LIGHT WINDS
OVERNIGHT. RAIN AND STORM CHANCES INCREASE LATE TUESDAY MORNING
AHEAD OF A WEAK BOUNDARY DRIFTING SOUTHWARD.
PRELIMINARY POINT TEMPS/POPS
DAB 95 77 91 77 / 40 20 50 20
MCO 97 77 94 76 / 60 20 70 20
MLB 93 77 91 79 / 30 10 60 30
VRB 93 76 93 77 / 10 10 60 30
LEE 96 79 93 77 / 60 30 70 20
SFB 97 78 94 77 / 50 20 70 10
ORL 96 78 93 77 / 60 20 70 20
FPR 92 75 93 77 / 10 10 60 20
MLB WATCHES/WARNINGS/ADVISORIES
FL...HEAT ADVISORY FROM NOON TODAY TO 7 PM EDT THIS EVENING FOR
FLZ041-044>046-141-144-247-347-447.
AM...NONE.
DISCUSSION...SEDLOCK
AVIATION...TOLLEFSEN
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