780
FXUS62 KMLB 141809
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
209 PM EDT Mon Jul 14 2025

...New AVIATION...

.KEY MESSAGES...
Issued at 301 AM EDT Mon Jul 14 2025

- A disturbance and associated deep moisture moves over central
  Florida early this week. Above-normal lightning storm chances
  and locally heavy rainfall with be the primary impacts.

- Daily rain chances remain high, up to around 80% through midweek
  as the disturbance continues to pull deep moisture over the
  peninsula as it moves into the Gulf.

- A more seasonal pattern returns late week with rain chances
  returning closer to normal by Friday.

&&

.PREVIOUS DISCUSSION...
Issued at 301 AM EDT Mon Jul 14 2025

Today... Weak low pressure sinks southwestward along the
Georgia/Florida Atlantic coastline. Deep moisture holds in place
across the interior and southern counties (PWAT 2.0-2.1") while
models show a tongue of drier air advecting along the Volusia and
northern Brevard coasts this afternoon and evening (PWAT ~ 1.8-1.9).
Therefore, the highest rain chances will be favored across the
interior and the Treasure Coast counties today (70-80%). Periods of
continued rainfall may lead to a localized flood threat,
particularly across low lying and poor drainage areas. HREF guidance
generally signals storm total accumulations of 1-1.5" with locally
higher totals up to 3.5-4" (5-10% chance) across areas which see
multiple rounds of showers and storms. While temperatures aloft
hold around -7 to -8 C, pulses of vorticity could allow for a few
strong storms. Stronger storms which develop will be capable of
frequent lightning strikes and localized convective gusts of 50-55
mph. When Thunder Roars, Go Indoors!

High temperatures today will vary based on rainfall trends. Guidance
generally favors an earlier start to showers and storms across the
south, limiting highs to the upper 80s to low 90s. The potential for
later convective initiation across the north could allow highs to
more widely range the low to mid 90s. High humidity will produce
heat index values between 100-107, potentially nearing Heat Advisory
thresholds north and west of I-4 ahead of showers and storms.

Tuesday-Wednesday... A wet pattern continues. Weak mid level
troughing slides across the Florida peninsula Tuesday and into
the northeastern Gulf by Wednesday. At the surface, a broad area
of low pressure follows across the state in vicinity of mid level
support. The National Hurricane Center continues to monitor this
feature as it moves into the Gulf and there is now a low 30%
chance for tropical development by the middle to latter part of
the weak. Regardless of tropical development, deep moisture will
continue to fuel high rain chances locally (80%). While global
ensembles suggest widespread daily rainfall totals of an inch or
less, localized totals of 2-4" remain possible, especially where
stronger storms occur. A conditional storm environment will exist
with the presence of a saturated air column and tall, skinny CAPE
profiles. However, localized waves of vorticity continue to pass
aloft, especially on Tuesday. This could continue an isolated
strong storm threat capable of frequent lightning strikes and
localized winds gusts of 45-50 mph.

High temperatures will be near to below normal each day (M80s-L90s)
with increased cloud cover and rain chances. Low temperatures remain
in the low to mid 70s.

Thursday-Sunday... The Atlantic ridge axis takes control of the
local weather pattern through the extended forecast period. A wave of
deeper moisture advects from the southeast on Thursday keeping one
more day of higher rain chances (~70%). By Friday and into the
weekend, a more seasonal pattern of afternoon showers and storms is
forecast with rain chances returning closer to normal. High
temperatures climb near to above normal each afternoon, reaching the
low to mid 90s. Lows in the low to mid 70s gradually increase a few
degrees as winds turn slightly more onshore.

&&

.MARINE...
Issued at 301 AM EDT Mon Jul 14 2025

A broad area of low pressure moves across the local waters today and
into early Tuesday, making winds widely light and variable. The
western Atlantic high begins to build late Tuesday, establishing
southerly flow around 10-15 kts into mid week. Seas gradually build
2-3 ft. High shower and storm chances continue through Thursday
before a more typical summertime pattern returns.

&&

.AVIATION...
(18Z TAFs)
Issued at 143 PM EDT Mon Jul 14 2025

Wet pattern overall through the TAF period. Early start to
convection today, with scattered showers and storms pushing across
ECFL through the morning hours. Lightning storms currently
pushing across the interior, south of KISM. Have maintained VCTS
starting at 18Z for all terminals with TEMPOs for MVFR conditions
within TSRA starting 18/20Z for most TAF sites. Latest CAMs show
convection will diminish shortly after sunset. Winds becoming
light and variable overnight. Winds will remain light through the
morning with winds generally out WNW/NNW before becoming onshore
by late morning/early afternoon and staying below 10 KT. Latest
guidance shows increasing showers/storms through tomorrow as the
disturbance approaches and then potentially crossing the local
area. Have included -RA VCTS starting at 12Z along the coast and
14Z across the interior.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  75  88  74  90 /  30  80  20  80
MCO  75  89  74  91 /  40  90  20  80
MLB  73  88  76  89 /  40  80  30  70
VRB  71  88  72  90 /  60  80  30  70
LEE  75  89  75  90 /  40  90  20  80
SFB  75  89  74  92 /  30  80  20  80
ORL  76  89  75  91 /  40  90  20  80
FPR  71  87  73  89 /  60  90  40  70

&&

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

$$

DISCUSSION...Law
AVIATION...Watson