894 FXUS62 KMLB 052358 AFDMLBArea Forecast Discussion National Weather Service Melbourne FL 758 PM EDT Sun Oct 5 2025
...New AVIATION...
.KEY MESSAGES... Issued at 254 PM EDT Sun Oct 5 2025
- Scattered to numerous fast-moving showers off the Atlantic will support locally heavy rainfall where banding features can develop. Localized flooding will be a concern through Monday.
- Dangerous beach and marine conditions will continue this upcoming week, including minor coastal flooding, life- threatening rip currents, and breaking waves of 5 to 7 feet with minor to moderate beach erosion especially near times of high tide.
- Breezy and gusty onshore winds will continue through much of this week.
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.DISCUSSION... Issued at 254 PM EDT Sun Oct 5 2025
Rest of Today-Monday...High pressure over the Northeast will begin to drift slowly offshore and into the Atlantic through Monday, as a trough moves through the upper Midwest. Meanwhile, a pool of moisture lingers along a boundary over south Florida and the Straits. Scattered, quick-moving showers continue area-wide this afternoon, with a few embedded lightning strikes observed in showers that have been able to overcome a bit of dry air in the mid-levels and modest lapse rates. Expect this activity to continue through the remainder of the day, with a tight pressure gradient producing breezy and gusty winds. Easterly flow 15-20 mph, with gusts to 25 mph, is highest along the coast, where winds are closer to 20-25 mph and gusts to 30 mph, especially in showers. Rainfall accumulations of 1-1.5", with locally higher amounts, are possible through this evening in places that see multiple rounds of heavier showers. PoPs 50-60% today. However, the heavy rainfall threat looks to increase late tonight and into Monday.
PWATs near 2" are forecast to increase to a soupy 2-2.3" Monday. CAMs (namely the HRRR) have been consistent through the day today that high coverage of showers will begin at the coast early in the morning (near sunrise), then spread inland through the late morning hours. With such high PWATs, it won`t take much for locally heavy rainfall. However, models suggest coastal convergence will help to maximize the heavy rainfall there there, especially from near Melbourne southward. QPF forecast amounts have increased through the day, with 1-3" possible for coastal counties and 1-2" for the interior. A few higher totals near 4-5" cannot be ruled out. A Flood Watch remains in effect for all of the coastal Counties into Monday evening. PoPs 60-70% will begin in the morning, but linger through the day, with multiple rounds of showers. T A few lightning strikes will remain possible.
Breezy onshore winds will continue through Monday, with little change from Sunday afternoon. Coastal and marine concerns persist, with a High Surf Advisory, Coastal Flood Advisory, and a High Risk for rip currents in effect. High coverage of showers and cloud cover will keep highs Monday afternoon in the lower to mid-80s. Overnight lows in the mid to upper 70s.
Tuesday-Thursday...Mid-level ridging over the Mid-Atlantic is nudged southward mid-week by a trough digging through the northern US. This will usher the plume of deep moisture south of the local area. PWATs look to fall below 2" by Tuesday afternoon, possibly as low as near 1.5" at times through mid-week. PoPs decrease accordingly, especially Wednesday (20-40%), though southern portions of the area, closest to the lingering moisture, will hold PoPs near 60% Tuesday and Thursday. Dry air aloft will limit overall lightning development, but a few storms cannot be ruled out. Breezy conditions look to continue, as the pressure gradient remains tight. Onshore winds 15-20 mph in the afternoons, highest along the coast, with gusts to 20-25 mph. Lower coverage of showers and cloud cover will allow for highs to increase into the upper 80s over the interior by Wednesday, while onshore flow keeps lows in the 70s.
Friday-Next Weekend...Ridging aloft dissipates by late week, with global models in good agreement that a stout trough will move through the Southeast. Rain chances are forecast to remain near to below normal, as northeast winds on the western side of a possible low over the Atlantic keep PWATs limited. Near to slightly below normal highs in the lower to mid-80s will help give a taste of fall, but it will be a Florida fall, as low level moisture from onshore flow keeps dew points near 70. Little relief from coastal concerns, as breezy, though lighter than earlier in the week, onshore winds continue and high astronomical tides linger through the weekend. While breaking waves are expected to diminish, rip currents and coastal flooding will remain concerns.
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.MARINE... Issued at 254 PM EDT Sun Oct 5 2025
Small Craft Advisory conditions are forecast to continue for at least portions of the local Atlantic waters through Wednesday, as seas continue to slowly subside. Until then, seas up to 10 ft today look to linger to up to 8 ft into Tuesday, especially over the Gulf Stream. Gusty onshore flow up to 15-25 kts is also forecast to continue through early this week. A slightly diminishing pressure gradient late week will help to reduce winds slightly. However, poor boating conditions are expected to linger into late week, as east to northeast winds remain up to 15-20 kts and seas remain up to 4-6 ft. High coverage of showers, with embedded lightning storms, will continue through Monday, before drier air helps to bring near to below normal rain chances mid to late week.
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.AVIATION... (00Z TAFs) Issued at 755 PM EDT Sun Oct 5 2025
A mix of VFR/MVFR start the TAF period as SHRA build from MLB to MCO/ISM. Continued AMDs are likely for at least those sites thru 03z. Models gradually diminish coverage after 06z but chances are high enough to maintain VCSH at all sites thru early Mon. Persistent easterly flow will keep wind speeds around 8-12 kt overnight with occasional gusts 20-25 kt INVOF SHRA activity.
Deepening onshore flow and moisture Monday will lead to periods of MVFR to occasionally IFR conditions. SHRA activity looks to ramp up as early as 12z from TIX southward but moreso from 15-17z. If earlier trends continue, may have to adjust the start time of prevailing -SHRA, and AMDs/TEMPOs are likely (esp. south of DAB). Winds 15-18 kt with gusts 25-30 kt are possible as low-level winds strengthen.
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.PRELIMINARY POINT TEMPS/POPS... DAB 75 83 74 84 / 60 70 50 40 MCO 75 86 75 86 / 30 70 30 50 MLB 77 84 77 84 / 50 70 60 50 VRB 75 86 76 85 / 50 70 60 50 LEE 74 85 74 86 / 20 60 20 40 SFB 75 84 75 86 / 50 70 40 50 ORL 75 85 75 86 / 40 70 30 50 FPR 75 86 75 85 / 50 70 60 60
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.MLB WATCHES/WARNINGS/ADVISORIES... FL...Flood Watch through Monday evening for FLZ041-141-154-159-164- 247-254-259-264-347-447-547-647-747.
Coastal Flood Advisory until 5 PM EDT Tuesday for FLZ141-154-159- 164-347-447-647-747.
High Surf Advisory until 5 PM EDT Tuesday for FLZ141-154-159-164- 347-447-647-747.
AM...Small Craft Advisory until 5 PM EDT Tuesday for AMZ550-552-555- 570-572-575.
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DISCUSSION...Leahy AVIATION...Schaper
NWS mlb Office Area Forecast Discussion