textproduct: Melbourne

KEY MESSAGES

Issued at 256 PM EDT Wed Jun 10 2026

- Building moisture will lead to increasing shower and storm chances each day. Gusty winds and localized flooding cannot be ruled out, especially in the afternoon and evening hours.

- Increasing humidity will lead to heat index values of 102 to 107 degrees or higher this weekend into next week; a Moderate to Major HeatRisk is likely.

- At the beaches, a moderate risk of rip currents continues. Always swim near a lifeguard and when thunder roars, go indoors!

DISCUSSION

Issued at 256 PM EDT Wed Jun 10 2026

Now-Tonight...Scattered showers and occasional lightning storms are ongoing this afternoon, with a majority of activity now west of I- 95. With PW of 2"+, the more organized convection has produced torrential rainfall (rain rates of 3-5" per hour) and brief gusty winds. Recent RAP analysis indicates pockets of deeper moisture convergence over the western and south-central portions of the FL Peninsula, validating the isolated/scattered nature of heavier showers this afternoon. As a diffuse east coast breeze pushes farther inland, eventually colliding with the west coast breeze, shower and lightning storm activity will continue trending westward. Showers and storms may linger along the Sumter/Lake/Osceola/Polk county border through mid evening before gradually dissipating before midnight. Locally heavy rain of 1.5-3.5" is possible with any stronger storm, along with gusty winds of 40-45 mph. Temperatures this afternoon in the mid 80s to low 90s will settle overnight into the low/mid 70s, as onshore flow lightens and veers more SSE.

Thursday-Friday...Weak high pressure over the area late this week will begin to shift south and east by Friday. This will help surface flow to veer increasingly SSW/S/SSE, away from the persistent easterlies we have seen for the last number of days. Upper 1" to low 2" PW values, along with steep low level lapse rates and afternoon sea breeze collisions, will support scattered showers and lightning storms. With steering flow remaining light, storm motions will be slow and erratic at times, potentially leading to localized flooding concerns. This will be especially true where repeated rounds/days of heavy rain occur. Warm H5 temps and marginal mid level lapse rates will limit the potential for strong/severe storms, but water-loaded downdrafts combined with available DCAPE could produce a 45-50+ mph wind gust. Temperatures trend warmer by the day, especially Friday, when increasingly SSW flow and less early-day cloud cover supports a faster diurnal temp cycle. Heat indices of 100-105 degrees are increasingly likely by the week's end, especially over the northern half of the area.

Saturday-Wednesday (modified)...Offshore flow strengthens this weekend into next week as a surface ridge axis settles across south Florida. The east coast sea breeze will face increasing opposition to inland movement and may even be pinned along the coast in the afternoons from Sunday onward. This favors higher coverage of showers and storms over the eastern half of the FL peninsula, which is reflected in the 50-70% PoPs most days. Ample PW values for convection (1.8-2.1+") linger over the area, as well. The latest 12z global model suite suggests a deeper longwave trough over the central and eastern U.S. by mid week, with a frontal boundary draped across the southeast U.S. If this plays out, it could very well prolong the unsettled weather pattern beyond Wednesday.

Southwesterly flow will support high temperatures in the lower to mid 90s, particularly in areas that manage to stay rain-free. Combined with humid conditions, heat indices 100-105+ are forecast in the afternoon. A Moderate to Major HeatRisk will be a concern this weekend and into next week, with little relief from overnight temperatures. This is something to keep in mind if you have outdoor plans this weekend, as staying cool and adequately hydrated will become even more important to avoiding heat-related illness.

MARINE

Issued at 256 PM EDT Wed Jun 10 2026

Generally favorable boating conditions remain this week and into the upcoming weekend, in the absence of scattered showers and storms. The focus for rain and storms will be during the overnight and early morning hours, transitioning inland over the FL peninsula in the afternoon and evening hours. This changes a bit into the weekend as recent onshore flow veers increasingly offshore, especially by Sunday. A few storms could become strong. Despite greater offshore flow, the east coast sea breeze will try to develop this weekend but may be pinned along the immediate coast. Seas 2-3 ft, locally higher in and around storms.

AVIATION

(00Z TAFs) Issued at 646 PM EDT Wed Jun 10 2026

Bulk of this evening's TSRA should stay west of the ECFL terminals, but can't rule out an ISO cell wandering back towards KLEE-KISM through 04Z. Onshore (ESE-SE) winds become light/VRB late. Mostly quiet through the night. Very low (20% or less) chance for onshore moving SHRA at the coastal terminals through the night. Initial daytime low-level cu-field could become MVFR at times from morning into the early afternoon before mixing/ lifting. Onshore (SE-ESE) winds a bit lighter at 5-10 kts, resulting in an evening sea breeze collision closer to KMCO and other inland terminals. Typical FL afternoon-evening SHRA/TSRA pattern. ISO SHRA could develop as early as 15Z, and TSRA as early as 17Z, gradually increasing in coverage while moving inland. Highest coverage of TSRA after 22Z leading up to and after the sea breeze collision. HRRR suggests TEMPOs will be needed for KMCO westward, but HREF probs are farther west enough to lower confidence, and will hold off until after the 00Z models packages. Winds become light/VRB again late Thursday.

PRELIMINARY POINT TEMPS/POPS

DAB 73 89 74 91 / 10 20 10 40 MCO 73 91 75 93 / 20 50 20 60 MLB 76 88 77 90 / 10 20 20 50 VRB 74 89 75 90 / 0 20 20 50 LEE 75 92 76 93 / 30 50 30 40 SFB 73 92 75 94 / 10 50 20 60 ORL 74 91 75 93 / 20 50 20 60 FPR 73 88 74 89 / 10 20 20 50

MLB WATCHES/WARNINGS/ADVISORIES

FL...None. AM...None.