079
FXUS62 KMFL 312354
AFDMFL

Area Forecast Discussion
National Weather Service Miami FL
754 PM EDT Fri May 31 2024

...New UPDATE, AVIATION...

.UPDATE...
Issued at 745 PM EDT Fri May 31 2024

Downtrend in convection this evening with the Gulf sea breeze
activity now over the waters and most of the peninsula remaining
free of additional convective flareups. Made just small
adjustments to temperatures and dewpoints for those rain-cooled
areas in Southwest Florida. Otherwise, do not anticipate any
additional major updates through the evening. Have a wonderful
Friday night!

&&

.SHORT TERM...
(Rest of today through Saturday)
Issued at 1220 PM EDT Fri May 31 2024

Today will be a transition day in South Florida as breezy
east-northeast winds increase with strong high pressure building
across the Eastern seaboard behind a departing mid-level trough.
This will result in a generally cooler and drier day across the
area, with the chances for showers and thunderstorms over the
interior and southwest regions into this evening. While storm
activity will be suppressed, there could still be a few strong to
severe storms with decent mid-level lapse rates and cooler
temperatures aloft. Any storms will be capable of producing strong
wind gusts, frequent lightning, hail, and localized flooding.

On Saturday, a shallow backdoor cold front will push across the
area from over the Atlantic, reinforcing breezy easterly flow
over South Florida. There could be a few showers along the east
coast metro forming along convergence boundaries, but in general
most convective activity will again be over the interior and
southwest areas.

The most notable impacts from the breezy easterly flow will be the
cooler temperatures, especially across eastern areas. Highs today
will range from around 90 along the east coast, to mid to upper
90s along the gulf coast. Saturday`s highs will be a few degrees
cooler, with mid to upper 80s along the east coast, and low to mid
90s over the interior and gulf coast. Heat index values will not
be much different than the high temperature with dewpoints at or
below 70.

&&

.LONG TERM...
(Saturday night through next Thursday)
Issued at 242 PM EDT Fri May 31 2024

.Rest of This Weekend into Early Next Week...
The long range models are showing that the back door cold front
will have dissipated over the Florida Straits late this weekend,
as a ridge of high pressure builds into the Western Atlantic
waters. This will keep a northeast to east wind flow over South
Florida allowing for the east coast sea breeze to push inland each
day with the west coast sea breeze remaining over the west coast
metro areas. This will allow for isolated to scattered showers
and thunderstorms to develop along the east coast sea breeze in
the morning hours before shifting and increasing in coverage over
interior and west coast metro areas in the afternoon hours.

Highs each day will be mainly in the lower to mid 90s over most
areas, except mid to upper 80s over the east coast metro areas.
The only exception to this is over the far western east coast
metro areas where it could get up to around 90 degrees. Heat
indices will be in the mid to upper 90s over most areas each day
except lower to mid 90s east coast metro areas and around 100
over metro Collier County.

Lows will be mainly in the lower to mid 70s over most areas each
night, except for the east coast metro areas where they will be in
the upper 70s to near 80 degrees.

.Middle To End Of Next Week...
The ridge will break down late next week over the Western Atlantic
waters allowing for a trough of low pressure to build into the
Eastern United States from the west. This will allow for the
steering flow to become more south to southwest direction over
South Florida. At the same time, some deeper moisture could start
to work into South Florida from the Caribbean Sea. This will
allow for a possible increase in POPs over South Florida late next
week with the highest coverage over the east coast metro areas
where the sea breezes collide.

Highs will also be on an increase middle to end of next week with
highs getting up into the mid to upper 90s over most areas, except
around 90 over the west coast metro areas. Heat indices will also
be increasing and should be in the lower to mid 100s over most
areas, except around 100 over the west coast metro areas. Lows
will also remain in the 70s over most areas, except around 80 east
coast metro areas.

&&

.AVIATION...
(00Z TAFS)
Issued at 745 PM EDT Fri May 31 2024

Convection is trending down for the evening. Activity should be
limited overnight. Convection could return over Atlantic waters in
the morning and spread west through the midday and afternoon
hours. Activity could linger around the terminals into the evening
and early overnight hours. Short-fused AMDs and TEMPOs may be
needed for sub-VFR.

&&

.MARINE...
Issued at 1220 PM EDT Fri May 31 2024

East-northeast winds of 15 to 25 kts will develop this evening and
overnight, creating hazardous boating conditions over the
Atlantic waters, which will linger through most of the weekend.
Seas will build up to 6-7 feet over the Atlantic waters, and 2-3
feet over the Gulf waters. A Small Craft Advisory has been issued
for the Atlantic waters from this evening through Sunday morning.
Additionally, there is potential for daily showers and
thunderstorms, which could result in locally elevated winds and
seas.

&&

.BEACHES...
Issued at 1220 PM EDT Fri May 31 2024

Developing east to northeast onshore flow has lead to a High Risk
of Rip Currents for the east coast beaches of South Florida for
rest of this weekend.

&&

.FIRE WEATHER...
Issued at 1220 PM EDT Fri May 31 2024

High pressure building north of the area will keep east to
northeast winds in place over the weekend, with gusts of 20 to 25
mph during each afternoon. Minimum RH values will drop to around
35% across interior and southwest areas, while staying above 50%
along the coast. Despite the drier airmass, there will still be
chances for afternoon showers and thunderstorms each day,
primarily focused over the interior and southwest areas,
initiating along sea breeze boundaries. Afternoon dispersion
values will range from very good to locally excellent. The
combination of high dispersion and dry fuels over the interior and
southwest areas will lead to sensitive fire conditions that will
have to be monitored.

&&

.PRELIMINARY POINT TEMPS/POPS...
Miami            78  87  78  87 /  10  50  40  40
West Kendall     75  88  75  89 /  10  40  40  40
Opa-Locka        77  88  78  87 /  10  50  40  40
Homestead        78  87  77  87 /  10  40  40  40
Fort Lauderdale  78  86  78  86 /  10  50  40  40
N Ft Lauderdale  78  86  78  86 /  10  50  40  40
Pembroke Pines   78  89  78  89 /  10  50  40  40
West Palm Beach  76  86  76  86 /  10  40  40  40
Boca Raton       77  87  77  87 /  10  50  40  40
Naples           74  95  74  93 /  20  40  30  50

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...High Rip Current Risk through Sunday evening for FLZ168-172-173.

AM...Small Craft Advisory until 8 AM EDT Sunday for AMZ650-651-670-
     671.

GM...None.
&&

$$

SHORT TERM...Culver
LONG TERM....BNB
AVIATION...RAG