420 FXUS62 KMLB 282346 AFDMLB Area Forecast Discussion National Weather Service Melbourne FL 746 PM EDT Sun Jun 28 2026 ...New AVIATION... .KEY MESSAGES... Issued at 243 PM EDT Sun Jun 28 2026 - Scattered showers and lightning storms, mainly inland this afternoon and early evening, with a isolated stronger storms still possible. - Increasing moisture with an approaching front will lead to a rise in rain and storm chances through at least Wednesday, with shower and storm coverage remaining near to above normal through next weekend. - Turning even hotter tomorrow, with highs in the mid to upper 90s and peak heat index values nearing Heat Advisory criteria (108-110 degrees), especially near to north of Orlando. - Hot and muggy conditions continue the rest of the week and into the holiday weekend, with peak heat indices 100-107F each afternoon. Widespread Moderate to Major HeatRisk forecast each day. && .DISCUSSION... Issued at 243 PM EDT Sun Jun 28 2026 Currently-Tonight...East coast sea breeze will continue inland with scattered showers and storms developing through late afternoon and early evening. Greatest coverage of convection is forecast near to west of the Orlando metro area late today, with the sea breeze collision. 15Z Cape sounding shows a little more drier air aloft today, which will aid in strong gusty winds up to 40-50 mph and frequent lightning with any isolated stronger storms. Small hail may also be possible, even with temps at 500mb a tad warmer today (around -6C). Weak steering winds will also lead to slow and variable storm motion, mostly propagating along sea breeze/outflow boundaries. This should allow any persistent storms to produce quick localized rainfall totals of 2-3", leading to mostly minor flooding. Showers and storms will diminish into late evening, with dry conditions forecast overnight. Warm and humid conditions forecast with lows in the mid to upper 70s for many locations. Monday-Wednesday...Atlantic ridge axis shifts south of the area into early this week, as a weak front shifts south toward Florida Monday and stalls near to north of the area into Tuesday. Low pressure along this front will shift offshore North Carolina and linger off the southeast U.S. coast through midweek. Strong mid-level ridge across the southeast U.S. on Monday will extend into Florida, with even hotter conditions into tomorrow. Max temps climb to the mid to upper 90s for much of the area, except low 90s along the coast, south of the Cape. A Heat Advisory may be needed for northern portions of east central Florida Monday afternoon, including from the Orlando metro area northward. It is across this region that hottest temps and greatest potential (50-80% chance) for heat index values nearing 108-110 will exist. Scattered showers and storms will again form with the inland moving east coast sea breeze and any boundary collisions over the interior, with PoPs ranging from 30-50 percent for much of the region, except 20% (or less) along the Treasure Coast. A few stronger storms will continue to be possible, with similar hazards of strong wind gusts, frequent lightning, small hail and locally heavy rainfall. Proximity of the front and increasing moisture leading to higher coverage of showers and storms through midweek (rain chances up to 50-70%) will then drop max temps back to the low to mid 90s on Tuesday and low 90s on Wednesday. However, the added humidity will still produce peak heat index values as high as 102-107 degrees. Weak steering winds and deep moisture (PW values of 2-2.2") will continue the potential for localized heavy rainfall around 2-4" each day, leading to mostly minor flooding issues, especially inland. Strong wind gusts and frequent lightning will continue to accompany any stronger storms. Thursday-Sunday...Surface low pressure off the southeast U.S. coast is forecast to make a slow jog back toward the west as strong mid- level ridge extends across the eastern United States. NHC maintains only a low (20%) chance for tropical development with this system, and conditions only become more unfavorable for development into late week. Currently, both the GFS and ECMWF weaken and dissipate this low pressure as it nears the coast. PW values around 2 inches persist, which will continue higher coverage of afternoon/evening showers and storms each day (PoPs as high as 50-80%) through late week and into the 4th of July holiday weekend. Max temps will also remain near to slightly above normal in the low to mid 90s, with peak afternoon heat index values still reaching up to 102-107. && .MARINE... Issued at 243 PM EDT Sun Jun 28 2026 Boating conditions remain generally favorable through the upcoming week as wind speeds stay below 15 knots and seas largely remain around 1-3 feet (up to 4 feet well offshore mid to late week). Winds overnight and into the morning hours become S/SW early this week, but still turn onshore with the east coast sea breeze through the afternoon and evening. A more predominant onshore flow then develops through Wed-Fri. Showers and isolated storms will be possible over the waters in the morning. Moisture increases leading to scattered to numerous showers and storms each afternoon/evening, but weak steering winds will keep much of this activity over land. However, can't rule out a few offshore moving storms, especially early in the week. && .AVIATION... (00Z TAFs) Issued at 746 PM EDT Sun Jun 28 2026 A few storms around MCO/ISM are forecast to diminish by 01Z/02Z with mostly dry conditions overnight. Winds remain widely light and variable through the period, turning east-southeast as the sea breeze develops into Monday afternoon. Isolated to scattered showers and storms are forecast to first develop along the coast by late morning and into tomorrow afternoon with increasing coverage over the interior through the afternoon and evening. Have included VCTS at all TAF sites but SUA. && .PRELIMINARY POINT TEMPS/POPS... DAB 77 95 77 91 / 10 50 30 50 MCO 77 97 78 94 / 20 50 30 70 MLB 77 92 77 91 / 10 40 20 50 VRB 76 93 76 93 / 10 20 10 50 LEE 78 96 79 93 / 10 50 30 70 SFB 78 97 78 94 / 10 50 30 70 ORL 78 97 79 93 / 10 50 30 70 FPR 76 92 75 93 / 10 20 10 50 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && $$ DISCUSSION...Weitlich AVIATION...Law