542
FXUS62 KMLB 040657
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
257 AM EDT Sun Oct 4 2026

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

.KEY MESSAGES...
Issued at 300 AM EDT Sun Oct 4 2026

- A High Risk of rip currents is expected through at least today
  at the east central Florida beaches. Entering the surf is not
  advised!

- A wet and unsettled pattern is forecast to persist across east
  central Florida through this weekend, as well as next week. The
  potential exists for minor flooding, lightning, and gusty winds
  each day. A Marginal Risk for excessive rainfall exists on
  Tuesday and Wednesday

- Near to slightly above normal temperatures continue through
  early next week across east central Florida. Peak heat indices
  of 100F and greater in some spots cannot be ruled out. Remain
  adequately hydrated!

&&

.DISCUSSION...
Issued at 300 AM EDT Sun Oct 4 2026

Currently-Today... KMLB radar imagery shows mostly dry weather
across east central Florida with isolated showers from southern
Brevard county southwards. GOES-19 satellite imagery and local
observations generally indicate partly cloudy skies across east
central Florida. Temperatures are currently in the low 70s to low
80s with dew points in the low to upper 70s. Analysis charts show a
mid/upper level high (591mb) over the state of Florida and the
western Atlantic.

Isolated to numerous showers (20-60% chance) and lightning storms
forecast to develop in the afternoon and evening hours with south-
southeast low level flow in place and daytime heating. The greatest
chance (40-60%) for showers and lightning storms are expected to be
over areas along and north of I-4 as outflow from showers/storms
upstream of east central Florida converge with southeasterly flow.
The highest chance for showers and lightning storms is between
2PM and 8PM before rain chances gradually diminish across northern
east central Florida tonight. Guidance shows MLCAPE up to
500-3,100 J/kg, 0-6km shear up to 5-25kts, PWATs up to 2.0-2.4",
and 500mb temperatures at around -6C. Thus, the potential exists
for isolated strong storms capable of occasional to frequent
lightning, wind gusts up to 35-45mph, and heavy rainfall (up to
1-3" in 60 minutes). Afternoon highs in the upper 80s to low 90s
with heat index values up to 98F-106F degrees are forecast. There
is a Moderate HeatRisk with areas of Major HeatRisk, especially
near the Orlando metro. A Moderate HeatRisk affects those
sensitive to heat without adequate cooling and hydration; a Major
HeatRisk affects anyone without adequate cooling and hydration.
Remember to practice heat safety, such as taking breaks in air
conditioned air and drink plenty of water!

Monday-Tuesday... A cold front is forecast to move southeast across
the Deep South and northern Florida to start off the workweek before
stalling across east central Florida on Tuesday. Scattered to
numerous showers (30-70% chance) and lightning storms are forecast
to develop along and ahead of the front across east central Florida
into the afternoon and evening hours on Monday. The greatest chance
for rain showers and lightning storms is between 2PM and 2AM. Above
normal rain chances (80-90%) are forecast on Tuesday with the front
expected to stall over the middle of east central Florida. ECMWF and
NAEFS ensembles show PWAT values (2.0"+) towards the 99th+
percentile for both days. Additionally, guidance indicates moderate
instability/CAPE values, weak to moderate bulk shear, and relatively
warm 500mb temperatures. The aforementioned weather parameters is
likely to limit the stronger storm potential, especially when
coupled with substantial cloud cover; however, flooding will be a
concern with slow storm motions and repeated rounds of showers/
storms expected. For this reason, the WPC has placed all of east
central Florida in a Marginal Risk (level 1 out of 5) for excessive
rainfall on Tuesday. The primary hazards with a couple to a few
strong storms will be occasional to frequent lightning, wind
gusts up to 40-50mph, and heavy rainfall resulting in flooding
(~5% chance) of roadways, as well as low-lying areas. Temperatures
will be dependent on exactly where the front meanders with
afternoon highs in the mid 80s to low 90s forecast on Monday
expected to reduce to the low 80s to near 90F degrees on Tuesday.
Heat index values in the mid 90s to around 103F degrees are
forecast on Monday with the upper 80s to around 100F degrees on
Tuesday forecast. A Moderate HeatRisk exists on Monday.

Wednesday-Saturday... Deterministic models and LREF-clusters are
in good agreement that a longwave trough will deepen over the Deep
south through Wednesday before the Atlantic ridge builds back
over the state of Florida Thursday into Friday. A continuation of
a blocking pattern is expected to keep the stationary boundary
over east central Florida through at least Friday with high
pressure upstream over the Ohio Valley/northeastern US, as well as
high pressure downstream over the western Atlantic. Above normal
rain chances (~70-90% chance) are forecast each day with scattered
to numerous/widespread showers and lightning storms forecast,
especially in the afternoon/evening hours. Grounds are expected to
already be saturated at this point due to previous rains, and
therefore flooding will continue to be a concern each day. It`ll
also take less rainfall to result in flooding by this point
coupled with slow storm motions and repeated rounds of showers and
lightning storms. For this reason, the WPC has place all of east
central Florida in a Marginal Risk (level 1 out of 5) for
excessive rainfall on Wednesday. Expect below normal to seasonable
high temperatures and generally near normal low temperatures.

&&

.MARINE...
Issued at 300 AM EDT Sun Oct 4 2026

Currently-Today... Favorable boating conditions are expected
outside of showers/lightning storms with onshore low level flow
in place. Isolated to scattered showers and lightning storms
with various storm motions are forecast. The potential exists for
a isolated strong storm or two capable of wind gusts at 34kts or
greater. Southeast winds at 6-12kts with gusts to 15-18kts are
expected. Seas to 2-3ft with up to 4ft over the offshore (20-60nm)
Brevard county waters are expected.

Monday-Thursday... Favorable boating conditions outside of showers
and lightning storms are forecast through Tuesday before a
stationary boundary meanders across the local Atlantic waters
into midweek. Conditions are forecast to deteriorate and become
hazardous on Wednesday over the local Atlantic waters as low
pressure stalls near the east coast of Florida around Cape
Canaveral. The potential exists for a couple to a few strong
storms capable of wind gusts to 34kts or greater each day. Winds
are forecast to turn onshore at 4-8kts on Monday before winds
gradually turn offshore into Wednesday at 10-15kts south of Cape
Canaveral and 15-20kts north of Cape Canaveral. Seas to 2-3ft
Monday are forecast to build to 2-4ft with up to 5-6ft over the
Volusia and Brevard county offshore waters on Tuesday, and 4-7ft
on Wednesday.

&&

.AVIATION...
(06Z TAFs)
Issued at 141 AM EDT Sun Oct 4 2026

Rounds of isolated onshore-moving showers continue along the coast
early this morning, primarily south of the Cape. Looking toward
the afternoon, guidance points toward scattered showers and
storms developing across the interior, and VCTS is mentioned at
the inland terminals. Some of this activity may pushback eastward
this evening, potentially lingering a few hours beyond sunset
across the interior and spreading towards DAB. East-southeast
winds increase up to 10-12 kts into the afternoon.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  89  74  86  73 /  50  30  70  70
MCO  92  75  90  74 /  50  40  70  60
MLB  89  76  89  74 /  20  20  60  70
VRB  89  75  90  73 /  20  20  40  50
LEE  91  74  87  72 /  50  50  70  60
SFB  90  75  88  74 /  50  40  70  60
ORL  90  76  88  75 /  50  40  70  60
FPR  89  74  89  72 /  20  20  40  50

&&

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

$$

DISCUSSION...Fehling
AVIATION...Law