344 FXUS62 KMFL 010629 AFDMFLArea Forecast Discussion National Weather Service Miami FL 229 AM EDT Wed Oct 1 2025
...New SHORT TERM, LONG TERM, MARINE, BEACHES...
.KEY MESSAGES... Updated at 222 AM EDT Wed Oct 1 2025
- Dangerous marine and beach conditions continue through the rest of the week and into the weekend. Life-threatening rip currents, high surf with at least 6-9 foot breaking waves, and beach erosion expected.
- More active weather pattern develops late this week and will last through the weekend. Specific rainfall forecasts and other details will be outlined as they become more clear in the next day or two.
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.SHORT TERM... (Today through Thursday) Issued at 222 AM EDT Wed Oct 1 2025
There will be some level of moisture return today as near-surface flow and low level flow turns back to a northeasterly direction by the late morning and early afternoon. In return, some extra scattered showers are expected today across the region with perhaps a couple of thunderstorms. Plenty of dry air will remain present in the mid to upper levels of the atmosphere, but with increasing moisture today cannot completely rule out a couple rogue thunderstorms unlike yesterday. Nevertheless, convective growth will be minimized again today due to the dry air aloft. PoPs are generally 30-40% today with east coast locations at 40-50%.
Heading into Thursday, a more active pattern begins to set up as shortwave troughing over the Gulf will advect into the Florida Peninsula. This will provide necessary forcing for ascent for showers and thunderstorms on Thursday while also some deeper moisture return occurs. As a result, shower and thunderstorm coverage could become much more widespread. Main concern is likely going to just be some heavier downpours and frequent lightning as QPF totals are only expected around 0.5-1" and 90th percentile values are 2-3" for the 24-hour period covering Thursday. This would not be enough to pose widespread flooding concerns, but a couple isolated areas experiencing localized flooding can never be completely ruled.
High temperatures today will be in the upper 80s to low 90s across South Florida. These will likely fall a few degrees on Thursday to the mid 80s near the Lake O region and upper 80s elsewhere.
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.LONG TERM... (Thursday night through Tuesday) Issued at 222 AM EDT Wed Oct 1 2025
Ensembles continue to show the previously mentioned complex weather pattern setting up for the end of the week and this weekend. Currently, an Omega-Block ridge is set up over the Midwestern United States. Troughs of low pressure will set up on both sides of the blocking setup and an additonal shortwave trough develops over the deep south states and the Gulf just south of the ridge axis. This shortwave trough will act to help break down the strong high pressure while also advecting into the South Florida region, but the high pressure ridge will still maintain most of its strength and stretch across most of the eastern United States. As a result, low pressure centers that form via the shortwave trough will essentially become locked in place and not able to move much as the flow is mostly blocked. Thus, this will create a setup with continuous energy advecting across the region for showers and thunderstorms to develop. Additionally, South Florida will be in the easterly flow region around the northeast U.S. ridge at least through Saturday, creating a steady stream of deeper moisture advection. The ridge and surface high pressure in the northeast U.S. is finally expected to break down heading into early next week as deeper troughing forms over Canada and begins to weaken the ridge plus push it offshore.
All things considered, this pattern is likely to lead to a wet end to the week and the weekend as well. Potential QPF will depend on several different factors and thus will change quite a bit in the short term, so once details become better defined in the coming days then total rainfall estimates will be outlined. The tail end of the forecast period early next week is still highly uncertain at this time, but guidance is hinting at a return to a more typical wet season pattern with easterly flow around surface high pressure in the western Atlantic and moderate rain chances.
Daily high temperatures each day are expected to be in the upper 80s with overnight lows in the low to mid 70s.
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.AVIATION... (06Z TAFS) Issued at 108 AM EDT Wed Oct 1 2025
Winds are expected to shift to the NE around 10 kts for the east coast terminals today with W winds at KAPF. Some scattered SHRA expected to develop today with VCSH as a result for all sites. There is a chance for a couple rogue TS but chances not high enough to mention at this time.
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.MARINE... Issued at 222 AM EDT Wed Oct 1 2025
A moderate northeasterly breeze is expected across the local waters for the rest of the week. Hazardous seas are expected to continue for the Atlantic waters over the next few days as ongoing swell continues behind Hurricane Imelda. Seas will range from 6-9 feet today and are expected to rise further for Friday and this weekend. Additionally, scattered showers and thunderstorms are expected each day. A Small Craft Advisory remains in effect for the Atlantic waters through late Friday night.
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.BEACHES... Issued at 222 AM EDT Wed Oct 1 2025
A high risk for rip currents continues across all Atlantic beaches through mid-week and into the late week period as breezy onshore winds and swell occur as a result of Hurricane Imelda passing in the western Atlantic waters. This elevated risk could persist through the weekend.
In addition, surf heights rise to 7-10 feet for the Palm Beaches for the same aforementioned reasons beginning late today and lasting into the end of the week and potentially the weekend. These large breaking waves can be extremely dangerous, thus caution is advised if entering the water for the next few days.
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.PRELIMINARY POINT TEMPS/POPS... Miami 90 76 87 76 / 50 50 80 60 West Kendall 91 75 87 75 / 50 40 80 50 Opa-Locka 91 76 88 75 / 50 40 80 60 Homestead 90 75 87 75 / 50 40 80 60 Fort Lauderdale 89 76 86 75 / 50 50 80 60 N Ft Lauderdale 89 77 87 76 / 50 40 80 60 Pembroke Pines 92 77 89 76 / 50 40 80 60 West Palm Beach 88 76 85 75 / 50 50 70 50 Boca Raton 89 76 87 75 / 50 50 70 60 Naples 91 75 90 74 / 40 40 80 40
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.MFL WATCHES/WARNINGS/ADVISORIES... FL...High Rip Current Risk through late Saturday night for FLZ168-172- 173.
High Surf Advisory from 11 AM this morning to 4 AM EDT Sunday for FLZ168.
AM...Small Craft Advisory until 4 AM EDT Sunday for AMZ650-670.
Small Craft Advisory until 8 PM EDT Friday for AMZ651-671.
GM...None. &&
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SHORT TERM...Redman LONG TERM....Redman AVIATION...Redman
NWS MFL Office Area Forecast Discussion