textproduct: Melbourne

KEY MESSAGES

Issued at 300 PM EDT Fri Jun 19 2026

- Hot and humid conditions continue into the weekend and next week. A Heat Advisory remains effect through 7 PM today. Residents and visitors should remain well-hydrated and stay cool in the shade or air conditioning each day.

- Rain and Storm chances remain high today and tomorrow with a Marginal Risk (5-14%) for Severe Storms today, as well as a Marginal Risk (5-14%) for Excessive Rainfall today and tomorrow; the potential for flooding of urban and low lying areas exists today and tomorrow.

- A Moderate Risk for rip currents continues at area beaches. Remember to swim near a lifeguard and to never enter the water alone!

DISCUSSION

Issued at 300 PM EDT Fri Jun 19 2026

Current-Tonight... Hot this afternoon with temperatures observed in the low to mid 90s across much of east central Florida. However, some relief from the heat should come in the form of increasing showers and storms through the evening. Isolated to scattered showers and storms are beginning to gradually organize near the I-4 corridor early this afternoon as a weak mid-level boundary passes aloft. A sea breeze has developed from the Cape southward, and is struggling to move inland. Meanwhile, the sea breeze has yet to form from the Cape northward where slightly stronger 925mb flow exists. General consensus from the most recent high res- guidance may suggest increasing coverage of showers and storms southward into the evening. As the sea breeze becomes more defined, particularly from the Cape southward, southwest steering flow should lead to storm convergence along the boundary. A strong to marginally severe storm environment exists through this evening, especially along boundary collisions. Model sounding analysis indicates a modest pocket of dry air above 700mb, aiding in DCAPE values near 1,000 J/kg. Mixing in the low to mid levels will allow for localized damaging wind gusts of 50-60 mph in the form of quick thunderstorm downbursts. Additionally, the dry air aloft could allow for small coin-sized hail within the strongest storms through efficient evaporative cooling. Any melting hail that occurs within the layer will allow for storms to produce heavy rainfall, and if stationary movement occurs along boundary collisions, a localized flood threat may exist. Additionally, cannot rule out a brief funnel cloud or waterspout along boundary collisions. Expect showers and storms to move offshore through the evening with diminishing coverage along the Treasure Coast as late as midnight. Dry conditions are then forecast overnight with low temperatures mostly in the mid to upper 70s.

Weekend... A cold front remains in place across the southeast U.S. and north of Florida on Saturday. Low pressure moving eastward through the central U.S. will begin to gradually lift the boundary northward on Sunday. Deep moisture (PWAT 2.0-2.2") persists early this weekend as shortwave energy passes aloft. The moisture profile then gradually dries on Sunday with modeled PWATs returning slightly closer to climatological normals. Westerly surface flow becomes light, and sometimes variable early each day, as a surface ridge axis across south Florida weakens. Uniform offshore flow through the low levels should still favor a west coast sea breeze regime with the east coast sea breeze slower to develop and move inland.

RAP analysis indicates a 500mb shortwave approaching from north Florida early Saturday morning. While the convective evolution remains slightly uncertain, some high res guidance suggests this could prompt early initiation of showers and storms for areas north of Orlando on Saturday. Further south towards Okeechobee and the Treasure Coast, a more typical pattern of diurnal showers and storms may be favored with later initiation of showers and storms into the afternoon and evening. Based on this analysis, the current forecast suggest isolated to scattered coverage of showers and storms north of Orlando through noon, remaining mostly dry to start the morning further south. High coverage (50-70%) then builds areawide after 3PM, with slightly lower coverage expected west of Orlando. A strong storm threat may become conditional depending on how the early the northern convective solution may evolve. Stronger storms which develop will be capable of wind gusts 45-55 mph, small hail, and locally heavy downpours. A brief funnel cloud or waterspout remains possible along boundary collisions.

A more typical diurnal pattern returns on Sunday. Lighter low level flow should allow the east coast sea breeze to develop a little earlier and push farther inland than it has been able to this past week. The greatest afternoon and evening rain chances (50-70%) should become generally favored between Orlando and the I-95 corridor along a sea breeze collision, and activity may gradually push back towards the coast beyond sunset. Stronger storms which develop along boundary collisions will be capable of gusty winds, frequent lightning, and locally heavy down pours.

Outside of showers and storms, a hot and humid summertime pattern persists. Temperatures widely range the low 90s, approaching mid 90s across the interior each afternoon. Triple digit peak heat index values are currently forecast to remain shy of Heat Advisory criteria (108F) each day, and trends will be monitored. A Moderate to locally Major HeatRisk should persist through the weekend. When spending time outdoors, make sure to properly hydrate, seek shade, and wear appropriate clothing.

Monday-Thursday... High pressure builds aloft into next week with its ridge axis generally near Lake Okeechobee or south Florida. A broad surface ridge axis attempts to hold its structure over south Florida early in the week as a cold front drops into the southeast U.S. and offshore the Atlantic seaboard through mid week. A drier airmass should help to cut back rain chances, especially near and north of Orlando Monday and Tuesday. Widely isolated to scattered rain chances through Tuesday become more scattered into mid week. High temperatures look to trend a few degrees above normal through the extended period, ranging the low to mid 90s along the coast and mid 90s across the interior.

MARINE

Issued at 300 PM EDT Fri Jun 19 2026

Generally favorable boating conditions continue outside of offshore moving showers and storms. Southwest flow becomes light this weekend as a surface ridge axis weakens over south Florida. Winds shift onshore, generally out of the south-southeast, each afternoon as the sea breeze develops. Seas of 2-3 ft subside to become widely 1-2 ft this weekend and into early next week. High coverage of afternoon/ evening showers and storms is forecast through Saturday, decreasing Sunday and especially into Monday/Tuesday. A few strong offshore moving storms will be possible today and again on Saturday, and stronger storms will be capable of isolated wind gusts of 40-50 kts, frequent lightning, and small hail.

AVIATION

(18Z TAFs) Issued at 120 PM EDT Fri Jun 19 2026

VCSH/VCTS increasing in coverage through the afternoon hours today, with PROB30s and TEMPOs in effect for VIS and CIG reductions due to TSRA as well as gusty and variable winds between 19-02Z. Activity pushes offshore and diminishes after 03Z. Light winds overnight becoming more WSW tomorrow, with winds picking up to around 10 knots. VCSH starting as early as 11Z across the interior, becoming VCTS everywhere after 15Z.

PRELIMINARY POINT TEMPS/POPS

DAB 77 90 74 90 / 20 70 30 70 MCO 77 92 75 93 / 20 70 40 70 MLB 78 91 76 90 / 30 70 40 60 VRB 77 91 75 91 / 50 70 50 50 LEE 78 91 76 92 / 30 60 40 50 SFB 77 92 75 93 / 20 70 30 70 ORL 78 92 76 92 / 20 70 40 60 FPR 76 91 75 91 / 50 70 40 50

MLB WATCHES/WARNINGS/ADVISORIES

FL...Heat Advisory until 7 PM EDT this evening for FLZ041-044>046-053- 058-141-144-154-159-164-247-254-259-264-347-447-547-647-747.

AM...None.