Area Forecast Discussion
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
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108 FXUS62 KMLB 251716 AFDMLB Area Forecast Discussion National Weather Service Melbourne FL 1216 PM EST Tue Nov 25 2025 ...New AVIATION... .KEY MESSAGES... Issued at 305 AM EST Tue Nov 25 2025 - Patchy, locally dense fog will be possible once again across portions of east central Florida early this morning. - Warm and mostly dry conditions are forecast through midweek, with isolated showers possible, mainly along the Treasure Coast. - A stronger cold front then moves through early on Thanksgiving, leading to cooler than normal temperatures and hazardous boating conditions late week. && .DISCUSSION... Issued at 305 AM EST Tue Nov 25 2025 Today-Tonight...Ridging aloft and the associated surface high pressure just offshore the eastern seaboard will continue to shift further seaward ahead of a broad mid-upper level trough swinging across the CONUS. The surface high will elongate as an initially disorganized pair of low pressure systems tracking across the upper Midwest deepen, with the tail of the high extending towards Florida. Conditions remain favorable for the development of early morning patchy dense fog across pretty much all of East Central Florida as the washed out remnants of a weak front continue to straddle the area, with the highest chances this morning in portions of Volusia, Lake, Seminole, Orange, and northern Brevard counties. Visibility can quickly reduce to less than a mile in locally dense fog during the morning commute. The remnant frontal boundary will also support some very low (20% or less) rain chances mainly over the Atlantic waters, which could brush the coast, and there is a non-zero chance for a shower or two to develop inland on a pair of very weak sea breezes. Southerly winds 5-10 mph shift southeasterly in the evening with the aforementioned weak east coast sea breeze, resuming warmer than normal temperatures, bringing afternoon highs into the L-M80s and morning lows into the L-U60s. Wednesday-Thursday...Troughing aloft will continue to amplify while swinging across the eastern US, deepening and consolidating the attendant surface low pressure system as it tracks east- northeast from the Great Lakes into New England and the southeastern Canadian provinces. The associated cold front approaches Florida Wednesday, reaching the peninsula overnight, and pushing through Central Florida on Thanksgiving Day with little to no rain chances but welcome cooling. Surface winds Wednesday veer southwesterly ahead of the front, bringing us the warmest temperatures of the weak with afternoon highs pushing into the M80s for most of the area, around 5-7 degrees above normal and roughly 2-5 degrees short of daily high temperature records for context. A wide range of temperatures are expected from north to south Thanksgiving Day as the cold front pushes through, with areas up north starting off the day in the U50s-L60s and only warming to the U60s-L70s in the afternoon, while down south morning temperatures will still be in the M-U60s with afternoon highs getting into the U70s-L80s (which is at least still an improvement from Wednesday). Northerly winds behind the front will pick up to around 10 mph inland and 10-15 mph along the coast, with gusts up to 20 mph. Mostly dry conditions both days, but some additional moisture lifting from the south keeps a low (20% to maybe 30%) chance of showers across the Treasure Coast both days. Patchy fog will be possible again Wednesday morning, and could see some stratus and fog accompany the front early Thursday morning. Friday-Monday...The trough aloft pushes offshore, trailing generally zonal with maybe a hint of ridging across the eastern US in its wake Friday and Saturday. Surface high pressure over the Deep South behind the front begins to shift east ahead of a low pressure system (possibly) developing over the Central US. Cool, breezy, and dry conditions are forecast Friday and Saturday. Forecast confidence decreases Sunday onward as models begin to disagree on the evolution of the upper level pattern and a developing surface low. The ECM favors developing a trough over the eastern Rockies/central US that the GFS keeps as just a weak shortwave, resulting in the ECM continuing to develop the surface low and possibly bringing a weak cold front to the area early next week, while the GFS keeps the surface low weak and disorganized, though still bringing a weak front to the area by lifting the previous front north as a warm front, as this solution keeps surface high pressure over the Atlantic. Official forecast calls for warming and some chances for rain early next week as moisture looks to increase one way or another. && .MARINE... Issued at 305 AM EST Tue Nov 25 2025 Today-Wednesday...Generally favorable boating conditions as high pressure over the western Atlantic lifts the washed out front draped across Central Florida and the local waters north today. The high will push farther out to sea Wednesday ahead of an approaching front, with the tail of the high continuing to extend back to Florida. Southerly winds today shift westerly Wednesday ahead of the front, briefly backing southerly Wednesday evening with a weak east coast sea breeze, all at 5-15 kts. Seas 2-3 ft. Isolated showers are expected, and a lightning storm can`t be ruled out. Thursday-Saturday...Boating conditions deteriorate Thursday as a strong but mostly dry cold front pushes through Florida and the local waters. Small Craft Advisories will likely be needed Thanksgiving Afternoon as northerly winds increase to 20-25 kts and seas build to 5-7 ft, highest in the Gulf Stream. These winds and seas are forecast to persist through Friday after the front departs south of the area. Conditions remain poor to hazardous into the weekend as strong high pressure building into the Deep South keeps a tight pressure across the area, veering 15-25 kts winds easterly by Saturday and holding seas at 5-7 ft, again highest in the Gulf Stream. Isolated showers and perhaps a lightning storm are possible with the frontal passage, then mostly dry conditions forecast. && .AVIATION... (18Z TAFs) Issued at 1215 PM EST Tue Nov 25 2025 Generally VFR thru at least late this evening. Mostly dry near the terminals, but some isolated showers cannot be fully ruled out near FPR and SUA. S/SE winds dominating during the day forecast to become light/variable once more tonight, with more fog development possible late overnight into early Wed morning. MVFR/IFR VIS reductions will be possible, with future TEMPO groups potentially necessary. Confidence too low for inclusion of this presently. && .PRELIMINARY POINT TEMPS/POPS... DAB 64 83 59 69 / 10 10 0 0 MCO 65 84 64 73 / 10 0 0 0 MLB 65 83 64 75 / 10 0 10 10 VRB 63 83 64 77 / 10 10 10 20 LEE 63 83 59 70 / 10 10 0 0 SFB 64 84 62 70 / 10 0 0 0 ORL 65 84 63 71 / 10 0 0 0 FPR 63 84 64 77 / 10 10 10 20 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && $$ DISCUSSION...Haley AVIATION...Sedlock