405 FXUS62 KMFL 041835 AFDMFLArea Forecast Discussion National Weather Service Miami FL 235 PM EDT Sat Oct 4 2025
...New UPDATE...
.KEY MESSAGES... Updated at 232 PM EDT Sat Oct 4 2025
- Wet and unsettled pattern continues, with repeat rounds of showers/storms possible each afternoon. However, uncertainty has increased regarding flooding impacts across the area as drier air aloft prevents more widespread showers and storms.
- Marine and beach conditions remain dangerous this weekend as swell and onshore flow persist, but will gradually improve with the new week.
- Minor to moderate coastal flooding remains likely into next week as we approach the peak of this King tide.
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.UPDATE... Issued at 232 PM EDT Sat Oct 4 2025
Scattered showers have developed this afternoon and are pushing east to west across the area. This activity is expected to continue through the remainder of the afternoon and evening, and a few showers could impact portions of the east coast metro overnight as well. Due to a pesky layer of drier air aloft, storms are not expected to be as widespread as initially anticipated. A few storms may finally develop today towards the early evening hours near interior and Southwest Florida however the risk for storms across eastern areas is lower today.
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.SHORT TERM... (Today through Sunday) Issued at 235 AM EDT Sat Oct 4 2025
Chances for a wet and unsettled weekend remain elevated as two areas of low pressure flank the Florida peninsula (one over the Gulf, one over the Bahamas), with a diffuse boundary over the Florida Straits connecting them both and a ridge of high pressure out over the Atlantic. This setup will continue to support breezy easterly- northeasterly winds near the surface as the pressure gradient between the low and surface high over the Atlantic persists. This will also help maintain continued moisture transport in the lower levels of the atmospheric column, with climo PWATs (1.8-2.0 inches) across much of the region. As a result, the chances for scattered showers and thunderstorms developing remain elevated, especially with the diffuse boundary to our south providing a source of lift, and this is captured pretty well by the high-res model guidance.
However, uncertainty regarding the heavy rain impacts for South Florida have increased a bit from previous forecast packages, mostly in response to a slower progression of the low WNW and drier mid- and upper-level conditions across the peninsula thanks to generally westerly flow aloft. This drier air helped inhibit widespread coverage and heavier downpours on Friday. HREF guidance continue to show this pattern through the early afternoon hours today, with flow gradually shifting from the south late in the afternoon. This would help moisten the atmospheric column, helping enhance chances for more rain. The uncertainty lies in when and if this shift happens. If it happens later in the day, the most likely outcome would be fairly scattered and transient activity over land and most of the heavier rain remaining off-shore. However, it we get more moisture aloft earlier, that could lead to slightly wetter conditions across South Florida. For now, keeping 50-60% PoPs, with most likely 1-2" acumulations and 1 in 10 chance of isolated spots getting up to 3-4".
Most guidance keeps the low to our east remaining weak, potentially even opening up into a wave, Sunday into Monday as it slowly meanders WNW. With this slower, weaker progression, and the potential additional moisture aloft, Sunday could be the wetter of the two days this weekend. However, this will all remain very dependent on how both of these possibilities play out, so for now will keep a generally similar forecast to Saturday.
Highs will rise to the upper 80s and lower 90s today, with the warmest temperatures found across southwest FL thanks to the ENE flow regime. Overnight temps could dip to the low to mid 70s over the interior, and warmer upper 70s along the East Coast.
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.LONG TERM... (Sunday night through Friday) Issued at 235 AM EDT Sat Oct 4 2025
Ridging begins to build aloft across the southeast CONUS as we head into next week, while a surface high is forecast to set up over the eastern US/Atlantic. This will help usher in a return to the more routine summertime regime of easterly winds and afternoon showers and thunderstorms over the interior and southwest. Breezy onshore winds could develop as the surface high is forecast to interact with another boundary across the region. Some guidance has started to hint at the first cold front of the season potentially making its approach late next week, and we`ll be eagerly monitoring that solution as we get closer.
High temperatures through the extended period will generally range from the low to mid 90s, with overnight lows in the low-mid 70s across the interior and up to the upper 70s along the coasts.
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.AVIATION... (18Z TAFS) Issued at 1243 PM EDT Sat Oct 4 2025
Gusty easterly flow prevails through this afternoon and evening. Scattered to numerous showers and storms will develop near the east coast terminals and they will continue through the day. A few lingering showers will be possible overnight along the east coast as well. At KAPF, VFR conditions will prevail through this morning, however, scattered showers and storms could develop near the terminal this afternoon.
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.MARINE... Issued at 235 AM EDT Sat Oct 4 2025
Hazardous marine conditions are expected to remain a concern for one last day across the Atlantic waters as lingering northeasterly swell continues, and a tight pressure gradient continues to maintain breezy ENE flow. Seas will range from 6-9 feet today, but will begin to subside on Sunday as the pressure gradient relaxes and winds decrease. Conditions across the Gulf will being to improve today as winds decrease. Additionally, scattered showers and thunderstorms are expected each day. Small Craft Advisories remain in effect through the duration of the weekend for portions of the local waters as the aforementioned threat persists.
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.BEACHES... Issued at 235 AM EDT Sat Oct 4 2025
Fresh onshore flow and elevated swell will result in a high risk of rip currents and high surf heights (for Palm Beach county beaches) through the weekend.
Minor to moderate coastal flooding will be possible along the east coast this weekend and into next week during high tides due to the upcoming king tide cycle, and ongoing E/NE swell.
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.PRELIMINARY POINT TEMPS/POPS... Miami 77 89 77 87 / 30 50 30 70 West Kendall 76 89 76 88 / 30 60 20 70 Opa-Locka 77 89 77 88 / 30 50 30 70 Homestead 77 88 76 87 / 30 50 30 60 Fort Lauderdale 77 87 77 87 / 40 50 40 70 N Ft Lauderdale 77 87 77 87 / 30 60 40 70 Pembroke Pines 78 90 77 89 / 30 50 30 70 West Palm Beach 77 87 77 87 / 40 60 40 70 Boca Raton 77 88 77 87 / 40 60 40 70 Naples 76 90 76 89 / 20 50 10 50
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.MFL WATCHES/WARNINGS/ADVISORIES... FL...Coastal Flood Advisory until 8 PM EDT Monday for FLZ168-172-173.
High Rip Current Risk through Monday evening for FLZ168.
High Surf Advisory until 2 PM EDT Sunday for FLZ168.
High Rip Current Risk through Sunday evening for FLZ172-173.
AM...Small Craft Advisory until 8 PM EDT Monday for AMZ650-670.
GM...None. &&
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SHORT TERM...ATV LONG TERM....ATV AVIATION...Rizzuto
NWS MFL Office Area Forecast Discussion