400
FXUS62 KMLB 121841
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
241 PM EDT Wed Aug 12 2026

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

.KEY MESSAGES...
Issued at 208 PM EDT Wed Aug 12 2026

- Heat Advisory is in effect for all of east central Florida today
  through 8pm for heat index values up to 108F-112F degrees;
  Remember to practice heat safety!

- Hot and humid conditions are forecast to continue for the next
  week. Maximum heat index values will reach near Heat Advisory
  criteria (108F+) each day through the weekend; Additional Heat
  Advisories are likely for at least portions of east central
  Florida.

- Below normal rain chances continue into early next week. Drier
  air aloft due to the Saharan Air Layer will support strong,
  gusty winds in any lightning storms each day.

&&

.DISCUSSION...
Issued at 208 PM EDT Wed Aug 12 2026

Rest of Today-Friday...Isolated showers and storms have begun to
develop across the area this afternoon, with a somewhat delayed
start to the sea breeze. The sea breeze will be the main focus for
convection today, though CAMs suggest outflow from ongoing storms
across north Florida sparking additional activity generally north
of Orlando. PoPs reflect this possibility, though PoPs overall
remain below normal for mid-August (up to 30-40%). Slower storm
motions could support outflow collisions into this evening, but
convection is forecast to diminish by around 10 PM or so. The 15Z
XMR sounding found DCAPE near 1000 J/kg, so will need to watch for
a few strong storms this afternoon with gusts to 50 mph. Slow
moving storms and ample moisture could also lead to a quick 1-3"
in a few spots.

Expect similar conditions for the remainder of the work week, as
high pressure dominates the local pattern. Light W/SW flow backs
S/SE at the coast and increases to around 10 mph with the
development of the sea breeze in the afternoons. PWATs 2-2.3" and
the sea breeze collision over the eastern half of the peninsula
will continue to support scattered showers and storms, but PoPs
are still below normal (30-40%). Strong storms with gusty winds to
50 mph and locally heavy rainfall will remain threats, as drier
air aloft due to the Saharan Air Layer (SAL) lingers. Hot
temperatures in the 90s and muggy dew points will continue to
produce heat indices near Heat Advisory criteria (108F).
Additional Heat Advisories are possible each day. Regardless, be
sure to practice heat safety!

Saturday-Wednesday...The Atlantic ridge axis builds back towards
the peninsula on Saturday. Then, surface ridging once again moves
westward across the peninsula and into the Gulf through early next
week. Aloft, a strong upper level high moves southward into the
Southeast US and flattens through the period. All of this results
in little perceptible change to the overall pattern for east
central Florida. PoPs remain below normal, generally 30-40% or
less, though most areas will likely remain dry most days. Sunday
looks to be the driest day, with PoPs below 20% area-wide. Strong
storms will remain possible each afternoon, with waves of SAL
supporting wind gusts to 50 mph in storms that can survive the
overall subsidence. Any areas that see rainfall could pick up a
quick 1-3" due to light storm motions and PWATs 2+" at times. The
afternoon sea breeze will have to work to overcome the light
offshore flow. Highs in the mid-90s will creep towards the upper
90s at times, with humid conditions continuing. Additional Heat
Advisories will need to be considered through at least the
weekend.

&&

.MARINE...
Issued at 208 PM EDT Wed Aug 12 2026

Favorable boating conditions are forecast into early next week,
as high pressure dominates the local pattern. Light offshore flow
backs S/SE near the coast each day with the development of the sea
breeze, but remains around 10 kts or less. Below normal coverage
of showers and storms is forecast, though any storms will be
capable of strong wind gusts to near 45 kts, in addition to
lightning strikes, as they push offshore. Seas 1-3 ft.

&&

.AVIATION...
(18Z TAFs)
Issued at 1255 PM EDT Wed Aug 12 2026

VFR conditions outside of convection through the TAF period. A
little stronger WSW flow today is delaying the Atlc sea breeze
development but wind shift out of the East will occur at coastal
terminals through 20Z. Bulk of the convection looks to stay east
of MCO so have maintained a VC term there. Focus for afternoon
storms should be near the coast along the sea breeze so TEMPOs for
TS exist for MLB-SUA. A little later TEMPO for DAB where sea
breeze will be slower to form. Lingering activity will diminish by
03Z. On Thu, west northwest flow will start the day at 5-10
knots, turning onshore in a sea breeze at the coast by 18Z.
Rain/storm coverage will be a little higher Thu aftn. Have started
MCO with VCTS after 18Z.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  76  93  76  93 /  30  40  10  30
MCO  77  95  77  95 /  20  40  20  40
MLB  78  92  77  91 /  30  30  10  20
VRB  75  92  75  92 /  20  30  10  20
LEE  77  94  77  94 /  20  40  20  40
SFB  77  94  77  94 /  20  40  20  30
ORL  77  94  78  94 /  20  40  20  40
FPR  76  92  75  91 /  20  30  10  20

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...Heat Advisory until 8 PM EDT this evening for FLZ041-044>046-053-
     058-141-144-154-159-164-247-254-259-264-347-447-547-647-747.

AM...None.
&&

$$

DISCUSSION...Wishard
AVIATION...Kelly