Area Forecast Discussion
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
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540 FXUS62 KMLB 291058 AFDMLB Area Forecast Discussion National Weather Service Melbourne FL 658 AM EDT Fri May 29 2026 ...New AVIATION... .KEY MESSAGES... Issued at 232 AM EDT Fri May 29 2026 - High coverage of rain and lightning storms are expected each day through early next week. While this rainfall will be beneficial to drought conditions, multiple rounds of locally heavy rainfall over the same areas could lead to increasing flooding concerns. - Coverage of showers and storms will be highest near the coast, as west to northwest flow opposes the east coast sea breeze. - Seasonable to slightly above normal temperatures through early next week before temperatures become slightly below normal by mid- week next week as a cool front stalls across central Florida. && .DISCUSSION... Issued at 232 AM EDT Fri May 29 2026 Today-Tonight... High pressure aloft will stay in place across the southern US as a series of troughs push into the NE US from Canada and push offshore. At the surface, elongated ridging stretching across the Straits of Florida and the northern Carribean will remain in place, resulting in west to northwest flow prevailing, with winds around 10 mph or less. The east coast sea breeze is forecast to form this afternoon, remaining pinned closer to the coast. This will result in the sea breeze collision occurring on the eastern side of the peninsula, along the coast. Deep tropical moisture remains in place over east central Florida, with forecast PW values of 2.0-2.2". This will support high coverage (50-80 percent) of showers and lightning storms today, with the highest chances of convection occurring in the afternoon before moving offshore into the evening. Widespread rainfall accumulations of 1.5-2.5" are expected, with isolated totals of 3+" will be possible. However, localized flooding concerns may develop in areas that see multiple rounds of heavy rainfall. Afternoon high temperatures will rise into the upper 80s to low 90s, with peak heat indices in the upper 90s to low 100. Overnight lows will be seasonable with lows in the low to mid 70s. Saturday-Sunday... Upper level trough across the NE US will push offshore this weekend as high pressure across the south remains in place. At the surface, elongated ridging stretching across the Straits of Florida and the northern Carribean will remain in place through the weekend, resulting in west to northwest flow prevailing. Much like today, winds will remain around 10 mph or less. The east coast sea breeze is forecast to form on Sunday afternoon, once again remaining pinned along the coast. Deep tropical moisture will remain in place most days as a couple shortwaves traverse across the area aloft, although some slight drying is forecast on Saturday. This will maintain the higher rain and lightning storm chances across the area, with a medium to high (50-70 percent) chance of rain on Saturday and a high (60-80 percent) chance of rain on Sunday. The highest chance for convection will occur in the afternoon before pushing offshore into the evening. Widespread accumulations of 1.5- 2.5" are expected, with isolated totals of of 3+" will be possible through the weekend. However, localized flooding concerns may develop in areas that see multiple rounds of heavy rainfall over multiple days in a row, especially for urban areas. Seasonable temperatures are forecast each day, with afternoon highs in the upper 80s to low 90s. These temperatures coupled with high humidity will produce heat indices in the upper 90s to low 100s. Warm conditions overnight, with lows in the low to mid 70s. Monday-Thursday... Another upper level trough will move offshore of the northeast US into mid week. High pressure remains south of the local area through early next week as a cool front shifts southward through the southern US. As the front approaches the Florida peninsula, it is forecast to slow, stalling at times into mid- week. Some uncertainty remains due to model disagreements continuing on where this front will stall and how far south the front will travel. However, models are becoming in better agreement with the front making it to central Florida before stalling. Regardless of which model solution ends up occurring, deep moisture, with forecast PW values 1.8-2.0"), will remain in place, especially along the boundary. Thus, high coverage of showers and lightning storms (50-70 percent) are forecast each day, especially in the afternoon. Exact rainfall amounts and placement will be dependent on where the boundary is located. However, widespread rainfall amounts of 1+" are expected. Because of this, locally heavy rainfall will be the main threat along the front, which may exacerbate any flooding concerns that develop through the weekend. Temperatures will be seasonable early in the week, becoming slightly below normal into mid week as the aforementioned cold front reaches the area. && .MARINE... Issued at 232 AM EDT Fri May 29 2026 Today-Tuesday... Generally favorable boating conditions through the period. High pressure south of the area will linger there into early next week, maintaining offshore flow around 15 kts or less. The east coast sea breeze is forecast to form near the coast most days through through the period, turning the winds onshore. High coverage of showers and lightning storms are forecast to develop near the coast each afternoon before pushing offshore through the evening and overnight hours. Seas 1-3ft through the weekend before building to 3- 5ft on Monday through mid-week. && .AVIATION... (12Z TAFs) Issued at 655 AM EDT Fri May 29 2026 Light winds and dry conditions start out the morning across the terminals, with winds eventually picking up between 5 to 10 knots after 15Z out of the west-northwest. The ECSB is forecast to develop and push inland after 18Z, causing winds at the coastal terminals to become more northeasterly. VCTS chances increase after 18Z along the coast and 19Z across the interior. TEMPOs added in at MCO/ISM/SFB/DAB/TIX for VIS and CIG reductions due to TSRA between 19-22Z. Activity will move offshore into the evening hours with dry conditions overnight and a return of light westerly winds after 00Z. && .PRELIMINARY POINT TEMPS/POPS... DAB 88 73 88 74 / 70 40 70 30 MCO 89 74 88 74 / 50 30 50 20 MLB 88 76 89 76 / 70 40 60 20 VRB 89 75 90 75 / 60 40 50 20 LEE 90 75 88 75 / 60 30 50 20 SFB 91 74 89 75 / 70 40 60 20 ORL 90 76 88 76 / 60 30 50 20 FPR 88 74 89 74 / 70 40 50 20 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && $$ DISCUSSION...Watson AVIATION...Tollefsen