Area Forecast Discussion
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
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050 FXUS62 KMLB 170613 AFDMLB Area Forecast Discussion National Weather Service Melbourne FL 113 AM EST Wed Dec 17 2025 ...New AVIATION... .KEY MESSAGES... Issued at 609 PM EST Tue Dec 16 2025 - Poor to hazardous boating conditions continue across portions of the waters tonight before becoming more favorable into midweek. A High Risk for rip currents persists at area beaches. - Isolated onshore-moving showers along the coast will remain possible. Otherwise, mostly dry through tomorrow. - A gradual warm-up forecast through the rest of the week, with temperatures becoming above normal by late week. && .DISCUSSION... Issued at 126 PM EST Tue Dec 16 2025 Rest of Today-Wednesday...Showers embedded within marine stratocu have overperformed slightly so far this afternoon. Therefore, have added in a slight chance (20%) for showers along the coast. Inland areas expected to remain mostly dry. However, A stray shower may occasionally linger into interior areas before diminishing. Dry air and a strong inversion above 850 mb are expected to continue to limit the threat for any lightning. Overnight lows are forecast in the mid to upper 50s inland, while coastal areas remain in the 60s. Patchy fog and/or low clouds will be possible overnight, mainly over the interior and especially along and north of I-4. Fog may become locally dense at times near sunrise. Use caution during the Wednesday morning commute. High pressure off of the Southeast US coast will maintain a ridge axis north of east central Florida Wednesday. Onshore flow looks to continue, becoming increasingly easterly. While dry air aloft is expected to linger, it appears there will be enough moisture in the marine stratocu layer to maintain the threat for onshore- moving showers into Wednesday night. PoPs continue around 20% at the coast (30-40% offshore), with inland areas still seeing mostly dry conditions. Temperatures will increase by a few degrees, reaching the mid to upper 70s in the afternoon. Overnight lows in the upper 50s to lower 60s. Thursday-Friday...Southerly flow develops Thursday, ahead of an approaching cold front. Higher moisture will advect northward through the day, with PWATs increasing to near 1.4-1.5" by the afternoon. Rain chances are forecast to respond accordingly, with scattered showers (PoPs 3-40%). Poor lapse rates and dry air aloft will continue to limit the threat for lightning. By Friday, low pressure moving through southeastern Canada will drag the aforementioned cold front into east central Florida. Northwesterly winds will advect in drier air once again, with no mentionable PoPs over land areas through the daytime hours. High temperatures will rise to above normal for late week, reaching the upper 70s to lower 80s. Overnight lows in the mid-60s. Saturday-Tuesday (modified previous)...Front will shift south of the area and fade into the weekend, with high pressure building in behind this boundary and pushing off the southeast U.S. coast. This will quickly veer winds onshore, with highs remaining mostly above normal (in the upper 70s to low 80s most locations) through early next week. May see isolated showers over the waters that can push onshore through the weekend, but otherwise it looks to remain mostly dry. The most noticeable change will likely be the overnight lows, which are forecast to dip into the 50s for much of the area Friday night into the week. A few locations are expected to see upper 40s well north of I-4 Saturday morning. && .MARINE... Issued at 126 PM EST Tue Dec 16 2025 Rest of Today-Tonight...Unfavorable boating conditions will continue to improve into tonight, as seas subside. Until then, seas up to 7 ft will remain possible in the Gulf Stream through this evening. However, seas up to 6 ft are forecast to linger through the overnight. Small Craft Advisories remain in effect for portions of the Gulf Stream waters through 10 PM, though small craft will need to exercise caution overnight. Onshore flow around 15 kts or less persists through the period. Isolated to scattered onshore-moving showers will remain possible. Wednesday-Sunday...Somewhat favorable boating conditions through the weekend. Onshore flow Wednesday will veer southerly into Thursday, ahead of an approaching cold front. The frontal passage on Friday will bring northerly winds, with look to quickly veer onshore again into the weekend. Winds generally around 15 kts or less, though a brief period of 15-20 kt winds are forecast near the frontal boundary Thursday night into Friday morning. Seas in the Gulf Stream are expected to respond, building to 6 ft. Otherwise, seas 3-5 ft through the period. At the very least, it appears small craft will need to exercise caution offshore Thursday night into Friday. Isolated to scattered showers will remain possible through Friday over the Atlantic waters. && .AVIATION... (06Z TAFs) Issued at 1237 AM EST Wed Dec 17 2025 Continuing to monitor potential for fog/stratus impacts at KMCO and other inland ECFL terminals. Latest HREF continues 10-30% chances for IFR reductions, but NBM chances have dropped considerably to less than 10% at KMCO and around 20% at KLEE. Given low confidence/chances, only have MVFR reductions in the KLEE TAF and all other inland TAFs continue VFR, but short-fused AMDs may be needed if fog/stratus manages to develop, which could also linger into the late morning. ISO onshore moving showers bringing brief IFR VIS and MVFR CIGs will remain possible through the TAF period. Confidence where/when these will develop is very low, and will need to play VCSH/TEMPOs by ear. Highest chances (such as they are around 20%) along the coast, but there are very low (around 10%) chances to reach the inland terminals. Otherwise, VFR conditions. Winds N-NE 5 kts or less inland and E-SE 5-10 kts along most of the coast tonight settle to ENE- ESE 5-10 kts, up to around 10 kts along the coast in the afternoon, then become light again late this evening. && .PRELIMINARY POINT TEMPS/POPS... DAB 74 62 78 63 / 20 20 40 50 MCO 76 61 81 66 / 10 10 40 40 MLB 76 64 80 66 / 20 20 40 50 VRB 76 64 81 66 / 20 20 40 50 LEE 75 59 80 64 / 10 10 40 50 SFB 76 60 80 65 / 10 10 40 40 ORL 75 61 80 66 / 10 10 40 40 FPR 77 64 81 66 / 20 20 30 50 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && $$ DISCUSSION...Leahy AVIATION...Haley