386
FXUS62 KMLB 061835
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
235 PM EDT Thu Aug 6 2026

...New KEY MESSAGES, DISCUSSION, MARINE...

.KEY MESSAGES...
Issued at 235 PM EDT Thu Aug 6 2026

- An inverted trough lifting northward across the Florida
  peninsula Friday into Saturday will lead to higher rain chances,
  increasing seas, and a greater risk of rip currents.

- Conditions trend drier from Sunday onward as high pressure is
  reestablished across the local waters and drier air aloft moves
  towards east central Florida.

- Hot and humid conditions will persist across east central
  Florida, with peak heat indices exceeding 100F each afternoon.

&&

.DISCUSSION...
Issued at 235 PM EDT Thu Aug 6 2026

Through Tonight...Scattered showers and storms continue to
develop and move westward across the Florida peninsula this
afternoon, with coverage anticipated to continue increasing as
activity moves farther inland, especially near and west of the I-4
corridor. Limited cloud coverage earlier in the day supported
adequate daytime heating prior to the start of convective
development, with temperatures remaining on track to reach the
upper 80s to low 90s areawide. Analyzed MLCAPE exceeds 2000 J/kg
areawide and lifted index values range between -8 to -6. DCAPE
remains generally between 600-900 J/kg and 500 mb temperatures
range between -9C to -8C across east central Florida. Based on
this environment, anticipate storms to produce frequent lightning
strikes, wind gusts of 50 to 55 mph, heavy downpours that could
lead to brief, localized flooding in some spots, and even small
hail. Strong easterly flow aloft will keep activity moving towards
the west and northwest at 10 to 15 mph through this afternoon,
with activity gradually diminishing late this afternoon into this
evening across the peninsula. While mostly dry conditions are
forecast across the peninsula later today, there is a chance for
continued isolated to scattered shower and storm development
across the local Atlantic waters. Some activity may be able to
move onshore given the persistent easterly flow at the surface and
aloft, especially from the Cape southward. Muggy conditions
persist into the overnight hours with lows remaining in the mid
70s areawide.

Friday-Saturday...An inverted trough situated near the Bahamas is
forecast to lift northward across the Florida peninsula late this
week into the early weekend. Guidance has trended slightly slower
with the trough`s arrival and departure across the state, though
the overall message remains the same: moisture will increase
areawide. PWAT`s of 2.1-2.3" are forecast locally, which will in
turn translate to higher than normal rain chances (60-80% Friday,
50-70% Saturday). The higher rain chances extend across the whole
area on Friday and are favored towards the interior and I-4
corridor on Saturday, due to the inverted trough lifting north and
away from the area. Storms cannot be ruled out with activity on
either day thanks to modest MLCAPE of 1500 J/kg and greater, cool
temperatures aloft ranging from -7C to -6C at 500 mb, and
downdraft CAPE of 600-900 J/kg. Overall, storm hazards will
include frequent lightning strikes, wind gusts of 45 to 55 mph,
and with the greater moisture present, heavy downpours. While
steering flow looks to be sufficient on Friday, some weakening in
the lower levels on Saturday could lead to a slightly greater risk
of localized flooding across east central Florida. Overall,
rainfall totals of 2-4" will be possible Friday and Saturday, with
localized higher amounts not able to be ruled out in some
locations that see multiple rounds of showers or slow-moving
activity. Activity is anticipated to diminish into the evening and
overnight hours, though persistent onshore flow will support
continued development across the local Atlantic waters Friday
night. Saturday night, drier conditions are anticipated areawide.

The greater moisture and in turn greater cloud coverage will work
to help limit daytime heating across east central Florida,
keeping afternoon temperatures relatively close to normal in the
upper 80s to low 90s. The moist air mass will keep relative
humidities high, which will still keep peak heat indices of
100-107F possible across the area. Overnight lows generally remain
in the mid 70s.

At the beaches, increasing choppy surf from the passing inverted
trough is anticipated. This means there will likely be an
increasing risk for rip currents at all local beaches, so caution
is advised. If necessary, a high risk of rip currents may be
warranted.

Sunday-Wednesday...Mid-level ridging drifts back towards the
Florida peninsula early next week, strengthening as it remains
overhead. At the surface, the Atlantic high will shift southward,
with the ridge axis once again extending towards the Florida
peninsula. Lingering moisture in the wake of the inverted trough
will lead to 40-60% rain and storm chances on Sunday, with values
returning closer to normal into the start of the work week. Drier
air aloft looks to move overhead, which will help limit some
convective development Monday onward. Any activity that does
develop will be diurnally driven, with the sea breeze the primary
forcing mechanism for development each afternoon. While exact
storm threats can`t be pinned down at this point, would anticipate
the typical summertime storm hazards all being possible;
lightning strikes, gusty winds, and heavy downpours. Showers and
storms will diminish across the peninsula during the late evening
and overnight hours, with mostly dry conditions across east
central Florida each night.

With the Atlantic high reestablishing itself overhead,
temperatures are anticipated to trend near to slightly above
normal through the extended period. While too early to give exact
values, current guidance does show peak heat indices exceeding
100F areawide with a low chance of exceeding 108F in some spots,
especially Monday onward. Will keep a close eye on trends and
issue any heat products as necessary. Limited relief from the
muggy conditions through the overnight hours, with lows remaining
near to slightly above normal.

&&

.MARINE...
Issued at 235 PM EDT Thu Aug 6 2026

The Atlantic ridge axis drifts north of the waters over the next
few days as an inverted trough lifts northward from the Bahamas
and across the Florida peninsula and local waters. Increasing
onshore flow is anticipated beginning tonight, with cautionary
statements tonight into Friday across the the Gulf Stream waters
as winds increase to 15 to 20 knots and seas build to 3 to 6 feet
areawide. By Saturday the pressure gradient loosens as the trough
lifts north, with southerly winds between 5 to 15 knots prevailing
from Saturday onward as the Atlantic high begins to settle
southward. Seas respond to the lighter winds by subsiding back to
2-4 feet on Saturday and 1-3 feet Sunday onward.

Scattered showers and storms are forecast across the local
Atlantic waters tonight through Saturday as a result of the
increasing moisture from the passing trough. Drier conditions are
anticipated Saturday night onward across the waters.

&&

.AVIATION...
(18Z TAFs)
Issued at 154 PM EDT Thu Aug 6 2026

Scattered to numerous showers and storms are ongoing across east
central Florida. The greatest coverage is expected to continue
across the interior with TEMPOs at MCO/ISM/SFB/LEE. Lower
coverage along the coast is mainly handled with VCSH/VCTS for
isolated onshore moving showers this afternoon. Activity across
the interior should diminish or move west of the terminals through
late afternoon and into the evening. Increasing coverage of
scattered onshore moving showers is forecast along the coast
overnight. Prevailing winds remain out of the east, but may become
variable in vicinity of storms.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  77  88  76  89 /  20  70  50  70
MCO  76  90  76  91 /  20  70  30  70
MLB  78  88  77  90 /  30  60  40  50
VRB  77  89  76  90 /  40  60  40  50
LEE  76  89  77  90 /  30  70  30  70
SFB  77  91  77  92 /  10  70  30  70
ORL  77  90  77  91 /  20  70  30  70
FPR  77  88  76  90 /  50  60  40  50

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...None.
&&

$$

DISCUSSION...Tollefsen
AVIATION...Law