


Area Forecast Discussion
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
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644 FXUS62 KMLB 070515 AFDMLB Area Forecast Discussion National Weather Service Melbourne FL 115 AM EDT Mon Jul 7 2025 ...New AVIATION... .KEY MESSAGES... Issued at 208 PM EDT Sun Jul 6 2025 - An active weather pattern persists across east central Florida today, with storm threats including lightning strikes, wind gusts up to 50 mph, and heavy downpours. - Scattered to numerous showers and storms are forecast through the work week as a result of a persistent moist airmass across the peninsula. - As temperatures warm back to the lower 90s, tropical humidity will make for oppressive peak heat indices of 100 to 105 degrees most afternoons. && .PREVIOUS DISCUSSION... Issued at 208 PM EDT Sun Jul 6 2025 Rest of Today-Tonight...Gusty outflow from convection that moved onshore along the southwest Florida coast early this morning persisted into east central Florida early this afternoon, leading to a few additional showers and storms, as well as wind gusts to around 35-45 mph. Models have struggled with this feature, though the HRRR seems to have initialized better in recent runs. With clearer, more stable air behind the boundary, the big question for the remainder of the afternoon will be how quickly the boundary layer can recover. This will determine the amount and timing of any additional showers and storms today. There is evidence of recovery along the western portion of the peninsula, with an increasing cumulus field noted on visible GOES-East imagery. Some cumulus development can also be seen across portions of the eastern half of the peninsula already. This would support current CAM guidance, which does show additional showers and storms along the coast late this afternoon into early this evening. For now, have maintained PoPs 40-50% from around Melbourne southward, though this is low confidence. To the north, PoPs remain 50-70% near and north of the I-4 corridor, as this area seems to have not been as affected by the outflow boundary and a healthier cumulus field with embedded showers exists upstream. Gusty winds to around 45-50 mph and lightning strikes will remain the primary hazard today, as portions of the Space and Treasure Coasts have already experienced. This threat is supported by some drier air in the mid-levels and sfc-3km lapse rates around 7-8 C/km. Locally heavy downpours could produce minor flooding in low- lying and poor drainage areas, with ample available moisture (PWATs ~2"). Should scattered showers and storms develop this afternoon, activity is expected to diminish into the evening hours, with convection moving offshore by around 9-10 PM. Tonight, overnight lows are forecast in the lower to mid-70s. Monday-Tuesday...The Atlantic ridge axis will continue to drift northward early this week, settling in across the local forecast area by Tuesday. Ridging aloft will help to moderate shower and storm chances to near normal levels. However, scattered convection remains forecast in the afternoons, with PWATs up to 2". Southwesterly flow looks to prevail Monday, before overall flow becomes light on Tuesday. This will allow for the east coast sea breeze to develop and become a focus for activity. While the sea breeze collision is expected across the eastern portion of the peninsula Monday, lighter flow Tuesday will likely lead to a more centralized collision. PoPs 40-50% each day, with convection diminishing through the evening hours. Gusty winds to around 50 mph will remain possible, with lingering dry air in the mid-levels supporting DCAPE to around 800-900 J/kg. Locally heavy rainfall will become an increasing concern, as steering flow weakens and cells move slowly. Near-normal high temperatures in the lower 90s will feel more like 100-105 degrees each day, with humid conditions. Wednesday-Saturday (modified previous)...The surface ridge axis is forecast to remain draped across the Florida peninsula mid week through the weekend, with a sea breeze collision forecast to occur each afternoon. This will result in increasing rain chances each afternoon into the evening hours. Whether the sea breeze favors the eastern or western portion of the peninsula will remain dependent on the exact location of the ridge axis, and it is still a bit too far out to say with confidence where it will reside. Maintained a 50 to 60 percent chance of rain and up to a 60 percent chance of storms due to increasing moisture across the peninsula through the end of the work week, with PWATs once again climbing above 2 inches. Outside of convection, warm and muggy conditions will continue into the weekend, with near normal highs in the upper 80s to low 90s and overnight lows in the low to mid 70s. && .MARINE... Issued at 208 PM EDT Sun Jul 6 2025 Generally favorable boating conditions this week, as the Atlantic ridge axis drifts northward and settles in over the local waters. South to southwest winds prevail, remaining around 10 kts or less. However, will see the east coast sea breeze develop each day, backing winds along the coast southeasterly and increasing them to 10-15 kts. The main threat through the week will be scattered afternoon showers and storms, which may drift offshore into the evening hours. Lightning strikes, gusty winds in excess of 35 kts, and heavy downpours will be possible. Chances around 40-60%, highest during the evening and overnight periods. Seas 2-4 ft into tonight diminishing to 1-2 ft by Monday night. && .AVIATION... (06Z TAFs) Issued at 115 AM EDT Mon Jul 7 2025 Quiet weather anticipated through the morning and early afternoon with light SSW breezes. Convective coverage looks lower than recent afternoons, requiring TEMPOs only at MLB/FPR/VRB for now where confidence is somewhat greater at this point. Sea breeze should be pinned east of DAB but is forecast to make it onshore south of Cape Canaveral, turning winds SE at MLB/VRB/FPR/SUA in the mid/late afternoon hours. && .PRELIMINARY POINT TEMPS/POPS... DAB 91 75 90 75 / 40 20 40 30 MCO 92 75 92 75 / 40 20 50 20 MLB 91 75 89 75 / 50 20 40 30 VRB 92 72 90 72 / 50 30 40 20 LEE 90 75 91 75 / 40 20 50 20 SFB 92 75 92 75 / 40 20 50 30 ORL 92 76 92 76 / 40 20 50 30 FPR 91 72 90 72 / 50 30 40 20 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && $$ DISCUSSION...Leahy AVIATION...Heil