textproduct: Melbourne

KEY MESSAGES

Issued at 135 AM EDT Wed May 27 2026

- Storm chances begin to ramp up late today near and west of Orlando. A few storms this afternoon and evening may become strong with wind gusts exceeding 50 mph and frequent lightning.

- The High Risk of life-threatening rip currents continues today at all Atlantic beaches of Central Florida. Please stay out of the surf.

- An unsettled and humid weather pattern kicks off on Thursday, lasting at least into early next week. High coverage of afternoon and evening storms is expected, even at the coast. There is at least a limited threat of localized flooding in urban and poorly drained areas from repeated rounds of heavy rain.

DISCUSSION

Issued at 135 AM EDT Wed May 27 2026

-----------Synoptic Overview-----------

Florida still resides on the western flank of deep-layer high pressure over the western Atlantic. The 590+ dam H5 high sits between Bermuda and The Bahamas this morning. At the surface, a ridge axis extends from the Atlantic to the I-10 corridor. As an omega block forms along the US-Canada border, a shortwave trough exiting New England will flatten the ridge and push it southward late this week. Fresh southeasterly low-level flow will persist into Wednesday, but winds will become lighter on Thursday. The global ensembles have trended slightly stronger with the mid-level ridge late in the week, but near-surface winds should turn offshore by Friday as the surface high-pressure axis moves toward the Florida Keys.

A weak cold front, associated with the trough over the Northeast, is expected to stall over the Deep South by this weekend. Meanwhile, a shortwave trough is forecast to slowly fill as it meanders through the western Gulf. While modestly drier air is currently in place aloft, these features will help transport deep tropical moisture, characterized by PWATs exceeding 2 inches, northward from the Caribbean into Florida from Thursday through the weekend. Ripples of vorticity maxima may also pass overhead, though their exact timing remains somewhat difficult to discern.

By early next week, another PV anomaly should reinvigorate the trough over the Northeast U.S. Ensemble means gradually push the quasi-stationary front into the Florida Peninsula. Individual members disagree on how far south the front will make it, but most are somewhere in close proximity to Central Florida. Should this occur, its interaction with the anomalous moisture already in place would extend the period of unsettled weather into the first days of June.

-------Sensible Weather & Impacts-------

Today - Tonight...

Through the morning, a few showers may move in from the Atlantic. There is also a low chance of a storm along the coast. The sea breeze should make solid progress toward the interior this afternoon, with southeasterly wind gusts once again from 20-30 mph once it passes by. Hi-res guidance forecasts a collision of the Atlantic and Gulf breezes somewhere from west of Lake George to Clermont to Sebring this evening, so we do expect higher coverage of inland storms (40-60%) today when compared to the last couple of days. Coastal areas should remain mainly dry this afternoon and evening, though some of the storms may drift back toward Daytona Beach late.

The storms on the Gulf Coast yesterday were fairly strong, with a 70 mph wind gust recorded at Punta Gorda. Given the lingering dry air aloft, one or two storms may produce localized downburst winds of 50-60 mph. Frequent lightning, small hail, and torrential rainfall will also occur within the strongest storms.

Highs today should reach the lower 90s for all areas except the immediate coast. Peak heat indices will top out from 95 to 100 degrees. Overnight lows remain exceptionally warm for late May, with many daily record warm mins and a few monthly record warm mins already occurring in recent days.

Thursday - Weekend...

A weak disturbance lifting from the Gulf into the Florida Panhandle is expected to help spread a plume of deeper moisture over the peninsula on Thursday. This is poised to enhance coverage of showers and storms on Thursday afternoon and evening (70-80%). With the sea breeze remaining closer to I-95, even our coast will have a higher chance of storms.

As high pressure settles southward from Friday onward, light offshore flow should continue to spawn scattered to numerous showers and storms (60-80%) over the eastern half of the peninsula, with a focus closer to the coast. While no significant disturbances are expected to pass by, the high ambient moisture and daytime heating will be sufficient for showers and storms to form each day.

Primary hazards are brief gusty winds to 45-50 mph and frequent lightning from the strongest storms. Beachgoers should watch for a darkening western sky, and remember that lightning can strike long before the rain arrives at the beach! Total rainfall amounts of 1.5 to 2.5 inches appear most likely through Sunday. We will need to watch for flooding where localized higher amounts of 3+ inches occur in a short timeframe, especially over populated areas.

Warm and muggy conditions will prevail, with near-normal highs in the upper 80s to near 90 and heat index readings topping out just shy of 100 degrees.

Next Week...

The favored scenario at this time is for an ill-defined front and abundant moisture to remain nearby. Exactly where this front resides is likely to dictate where the heaviest rainfall occurs. In fact, some of the heaviest rainfall tallies may occur next week if the front sags into Central Florida. It's just a little too early to get specific, but the risk for excessive rainfall and flooding remains on the table. For now, we will stay with statistical guidance, which reflects high chances (70%+) of showers and storms each day. The 6-10 day outlook, extending through June 5th, forecasts a 60-70% chance of above normal rainfall over Central Florida.

MARINE

Issued at 135 AM EDT Wed May 27 2026

Moderate to fresh southeast breezes continue over the local Atlantic today as the waters remain immediately south of a surface high-pressure axis. The surface high starts to drift southward on Thursday, reaching South Florida by Friday. Winds will turn lighter, and a weaker sea breeze will promote increasing coverage of showers and storms beginning Thursday. Some of the storms will push offshore, increasing the risk for suddenly stronger gusts and agitated seas. This general unsettled weather pattern is expected to persist through the weekend.

SE winds 12-18 kt today, decreasing to 10-15 kt on Thursday. By Friday, winds turn from SW in the morning to SSE by afternoon, up to 10 kt. Seas 3-5 ft today, 2-4 ft on Thursday, then 2-3 ft from Friday through the weekend.

AVIATION

(06Z TAFs) Issued at 135 AM EDT Wed May 27 2026

SE flow 5 to 10 knots prevails at all sites through this morning, becoming gusty up to 25 knots along the coast after 18Z as the east coast sea breeze develops and moves inland. VCSH/VCTS forecast near MCO and the other interior terminals after 19Z as the sea breeze collision occurs across the peninsula. Will continue to monitor the need for TEMPOs, but have excluded them for now. Anticipate lingering showers to persist into the overnight hours beyond 00Z at the interior sites with winds becoming more southerly into tonight at 5 to 10 knots.

PRELIMINARY POINT TEMPS/POPS

DAB 90 74 89 73 / 40 40 80 40 MCO 91 74 89 73 / 50 60 80 30 MLB 88 77 88 75 / 20 20 80 40 VRB 89 76 89 74 / 20 20 70 30 LEE 91 75 88 74 / 60 70 80 30 SFB 93 74 90 74 / 50 50 80 30 ORL 91 75 89 74 / 50 60 80 30 FPR 89 75 89 73 / 20 20 70 40

MLB WATCHES/WARNINGS/ADVISORIES

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