741 
FXUS62 KMLB 030547
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
147 AM EDT Fri Oct 3 2025

...New AVIATION...

.KEY MESSAGES...
Issued at 324 PM EDT Thu Oct 2 2025

- Wet weather pattern next several days with increased 
  winds/moisture off the Atlantic supporting locally heavy 
  rainfall. Localized flooding will be a concern, especially along
  the coast where a Flood Watch has been issued through Saturday 
  night.

- Prolonged, dangerous beach and marine conditions will continue
  into the weekend with life-threatening rip currents, high surf
  with breaking waves of 5 to 8 feet, and minor to moderate beach
  erosion especially near times of high tide&&

.DISCUSSION...
Issued at 324 PM EDT Thu Oct 2 2025

Rest of Today-Tonight...There is increasing potential for locally
heavy rainfall leading to flooding along the coast, the starting 
on the Treasure Coast this afternoon, then gradually shifting 
northward Friday and Saturday, and a Flood Watch has been issued 
for all East Central Florida coastal counties through Saturday 
night. For the rest of today and tonight, an axis of high moisture
lifting northward in freshening onshore flow from a tightening 
pressure gradient on the south side of high pressure over the 
eastern seaboard will support rounds of onshore moving showers, 
especially along the Treasure Coast. 12Z HREF guidance calls for 
mean rainfall amounts of 2-5", and 90th percentile values over 6",
which would lead to flooding of roads, urban low- lying, and poor
drainage area if realized. Individual HRRR runs have called for 
some eye watering rainfall amounts over 10" which could result in 
greater flooding impacts, but there is very low confidence in that
scenario. Chances for overnight heavy rainfall and flooding along
the coast corridor decrease northward, but could still seem some 
1-3" rainfall amounts with locally higher values. The threat for
heavy rainfall and flooding drops off inland of the coastal
corridor where coastal convergence is maximized, but bands of
showers will be expected across the rest of the area through the
night, with a non-zero threat for heavy rainfall and minor
flooding.

Beach and marine conditions remain hazardous as onshore flow 
increases again and we continue to see long period swell produced 
by Imelda and Humberto reach the coast. High Surf Advisories, Rip 
Current Statements, and Small Craft Advisories remain in effect. 
Entering this life-threatening surf is not advised.

Friday-Saturday...There is potential for a disturbance to develop
over the Atlantic waters near Southeast Florida along the remnant
frontal boundary and axis of high moisture. The National 
Hurricane Center currently has a low (10%) chance of tropical 
development over the next 7 days, but any development of the 
feature, closed low or even an open wave, would cause the pressure
gradient along the East Central Florida coast to further tighten 
and increase onshore flow. Easterly winds 15-25 mph with higher 
gusts would worsen already hazardous beach conditions, and in a 
very high moisture and low instability environment supporting 
efficient rain makers, further enhancing the potential for 
locally heavy rainfall leading to flooding. This threat will be 
highest along the coastal corridor where coastal convergence will 
cause onshore moving showers and storms to pile up. Rounds of 
these showers are forecast to produce widespread rainfall amounts 
of 1.5-3" along the coast, and locations that see multiple rounds 
of heavy rainfall and/or training of showers have a medium (40%) 
chance of locally high amounts of 3-5", and there is a low (10%) 
chance for one or two locations to receive 5-8" of rainfall 
through Sunday morning. Areas where soils are reaching saturation 
from previous heavy rainfall will have higher sensitivity to 
additional rainfall, particularly coastal Volusia and portions of 
the Treasure Coast. Confidence where these locally higher rainfall
amounts will occur is low, but there has been a fairly consistent
signal for the coast south of the Cape Friday, shifting northward
to include most of the coast Saturday, with this highest over all
chances Saturday. WPC has issued a Slight (level 2 of 4) for 
excessive rainfall/flash flooding in these aforementioned areas 
while the remaining parts of the coast are in a Marginal (level 1 
of 4) risk. All that sad, widespread flooding is not expected, and
most locations are going to see the lower end of these forecast 
values. Rainfall amounts will vary significantly across relatively
small areas, and we may see cases where only a couple 
neighborhoods see significant rainfall that leads to flooding. 
Showers are expected to push inland, but once they get west of 
that coastal convergence zone the risk for excessive rain 
decreases, though is non-zero. Most likely inland rainfall amounts
are 0.5-2.0", but some locally higher amounts are possible. On 
the St Johns River, Astor is forecast to reach Moderate Flood 
stage by the weekend, and heavy rainfall could cause rises on 
other sections of the basin.

At the beaches, large breaking wave of 5-8 ft are will continue 
to pound the coast, producing high/rough surf and numerous life- 
threatening rip currents. While overall water levels are currently
forecast to remain below coastal flood criteria, wave run-up to 
the dune will still cause minor to moderate erosion near the times
of high tide. Numerous coastal hazard products remain in effect, 
including High Surf Advisories, Rip Current Statements, and Small 
Craft Advisories. 

Sunday-Wednesday...Forecast confidence in the long-term decreases
due to uncertainty how (of if) the disturbance evolves. Guidance
agrees it should depart the area by Monday, but how developed it
becomes, what direction it goes is less clear, and how much
moisture is dragged across the area in its wake is less clear. For
what it's worth, 12Z guidance is in decent agreement for a quick
north-northwestward track across peninsula as an open wave or very
weak closed low, continuing moderate onshore/easterly flow with
the GFS opting for higher moisture and the ECM lower. As a result
there is a continued risk for excessive rainfall along the coast
corridor through at least Monday. Very high rain chances Sunday
gradually decrease through the week.

&&

.MARINE...
Issued at 324 PM EDT Thu Oct 2 2025

(Modified Previous Discussion) NE to E pressure gradient will 
continue to tighten over the local Atlc waters the rest of today 
around high pressure wedging down the eastern seaboard. There is 
also potential for a weak disturbance to develop over or just 
south of the waters this weekend. Thus, hazardous to dangerous 
boating conditions are forecast to continue across the local 
Atlantic waters over the next several days. Wind speeds 15-25 
knots with combined seas (wind wave and swell) of 7-12 feet. Small
Craft Advisory (SCA) will continue through Sat for all the 
waters. There should be some relaxation of the pressure gradient 
Sun-Mon as winds turn E-SE but seas will be slow to subside. An 
extension of the SCA appears likely to include Sunday, at least 
for the offshore waters, but given some uncertainty over 
development of the disturbance, have opted to not extend with this
forecast cycle.

Meanwhile, moisture increases locally which will promote a high 
coverage of showers and isolated storms containing heavy rain and 
cloud to water lightning. Brief waterspouts will also be possible 
especially where cell mergers occur or spin-ups driven by coastal 
convergence. 

&&

.AVIATION...
(06Z TAFs)
Issued at 147 AM EDT Fri Oct 3 2025

Scattered onshore-moving showers persist through the period. VCSH
continues along the coast early this morning before being 
introduced at all inland terminals by 15Z. Impacts from passing 
showers are forecast to remain brief, and have left out TEMPOs at 
this time. East-northeast winds become breezy again today with 
gusts between 20-25 kts this afternoon. 

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  82  73  82  74 /  60  50  80  70 
MCO  84  72  83  73 /  50  30  70  50 
MLB  83  75  83  74 /  60  60  70  70 
VRB  84  75  83  74 /  70  60  80  70 
LEE  84  72  83  72 /  40  20  50  50 
SFB  84  73  83  74 /  60  40  70  60 
ORL  84  73  83  74 /  50  30  70  60 
FPR  84  74  83  74 /  70  70  80  70 

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...Flood Watch through Sunday morning for FLZ041-141-154-159-164-
     247-254-259-264-347-447-547-647-747.

     Coastal Flood Advisory until 11 PM EDT Sunday for FLZ141.

     High Surf Advisory until 4 AM EDT Sunday for FLZ141-154-159-164-
     347-447-647-747.

AM...Small Craft Advisory until 8 PM EDT Sunday for AMZ550-552-555-
     570-572-575.

&&

$$

DISCUSSION...Haley
AVIATION...Law