textproduct: Melbourne

KEY MESSAGES

Issued at 257 AM EDT Mon Sep 14 2026

- A humid and unsettled pattern persists early this week. Scattered afternoon and evening storms are forecast, particularly over the interior. Locally heavy rain and gusty winds to 40-50 mph are expected in the strongest storms.

- Turning windy, especially at the coast, from late Tuesday through Thursday. The risk of hazardous beach and boating conditions increases on Wednesday and Thursday, including rough surf/seas and a high risk for life-threatening rip currents.

- Heightened rain chances return to coastal communities on Wednesday and Thursday. Repeated bands of rain and storms over saturated spots may lead to localized flooding in urban areas.

DISCUSSION

Issued at 257 AM EDT Mon Sep 14 2026

Today-Tonight... Surface high pressure slides eastward over the Great Lakes region, pushing a cold front offshore the northeast and mid Atlantic coast. Light offshore winds early this morning begin to veer after sunrise, turning east-northeast as the east coast sea breeze develops midday. High-res guidance indicates an active east coast sea breeze, initiating scattered showers and storms primarily west of I-95 as it pushes inland and towards the western half of the peninsula through early evening. Primary storm hazards remain locally heavy downpours, frequent lightning strikes, and localized wind gusts of 40-50 mph.

Another hot and humid day is expected. Most locations start the day with temperatures in the low to mid 70s. By the afternoon, temperatures peak just a few degrees above seasonal climatology with highs in the low 90s. Deep moisture persists, and peak heat index values will spread 102-107 degrees.

Tuesday-Thursday... High pressure expands along the eastern seaboard as a strong ridge builds aloft and centers over the southeast U.S. East-northeast winds become breezy and gusty Tuesday afternoon, further increasing to 15-20 mph Wednesday (locally higher along the coast). Breezy conditions continue through Thursday as winds gradually subside. At area beaches, building rough surf and a high risk of rip currents are expected by Wednesday. Heed the advice of lifeguards, beach patrol flags, and signs. Entering the surf is strongly discouraged!

The increased flow into mid week should generally break down the persistent sea breeze pattern that has been driving the local weather recently. Deep moisture holds in place Tuesday, favoring moderate to high coverage of showers and storms. A much drier airmass becomes advected over portions of north-central Florida Wednesday, and the greatest rain chances (60-80%) become trimmed southward towards southern Brevard, the Treasure Coast, and across inland areas in vicinity of Lake Okeechobee. Despite the drier airmass, moistening of the low levels in onshore flow should at least favor scattered rain chances further north, particularly along the coast. Moisture begins to recover Thursday, returning scattered to numerous rain chances more areawide (still highest along the coast). Continuing to watch for a localized heavy rainfall threat that may develop along portions of the coast Thursday as a mid to upper level trough passes westward over the state.

High temperatures in the low 90s on Tuesday fall only a few degrees Wednesday and Thursday, remaining seasonally warm. Low temperatures mostly in the low to mid 70s inland will remain warm along the coast, mostly in the upper 70s and near 80 degrees.

Friday-Sunday... The mid to upper level ridge over the southeast U.S. gradually breaks down late week as troughing aloft continues to push west of Florida and into the Gulf. Southwest to south flow behind the trough aloft will advect a column of deeper moisture over central Florida. This looks to support continued rain chances areawide into the weekend. High temperatures are forecast near seasonal values mostly in the upper 80s and near 90 degrees.

MARINE

Issued at 257 AM EDT Mon Sep 14 2026

Today-Tonight... Favorable boating conditions continue. Light offshore winds prior to sunrise gradually veer, becoming easterly late in the day behind the sea breeze. Seas mostly hold around 2 ft, building up to 3 ft far offshore north of the Cape. A few showers and storms are forecast near the coast and over the intracoastal waters as the sea breeze develops. Scattered rain chances build late tonight into early Tuesday morning.

Tuesday-Thursday... Poor to hazardous boating conditions build into mid week as high pressure expands over the eastern U.S. East- northeast winds begin to increase 10-15 kts into Tuesday evening, further increasing 20-25 kts north of the Cape through sunrise Wednesday and spreading south of Sebastian Inlet into the afternoon. Seas respond, building 6-8 ft across the northern waters early Wednesday, expanding southward through early evening. Conditions then improve through the day Thursday as winds fall to around 10 kt and seas subside to 4-6 ft by sunset. Increased onshore flow should support high coverage of showers and storms over the waters through the period.

AVIATION

(06Z TAFs) Issued at 148 AM EDT Mon Sep 14 2026

VFR conditions prevailing. A period of persistent onshore flow begins today, with winds E 10 kts or less by the afternoon. Scattered to numerous showers and storms are forecast to develop along the sea breeze, just west of the coastal terminals, by around 16Z. Convection then progresses inland through the afternoon. Currently, the highest confidence in any reductions is forecast near LEE, but will monitor with the next package for any other TEMPOs/PROB30s. Convection looks to diminish by 0-1Z. Light, generally onshore winds, are then expected overnight.

HYDROLOGY

Issued at 257 AM EDT Mon Sep 14 2026

The St Johns River at Astor may reach Action Stage this week. Locally heavy rain is expected in the middle/upper basin early this week, followed by a period of onshore winds over the lower basin and estuary from late Tuesday through at least Thursday.

PRELIMINARY POINT TEMPS/POPS

DAB 90 76 89 77 / 40 10 50 40 MCO 93 76 90 76 / 60 20 70 10 MLB 90 77 89 78 / 30 20 70 60 VRB 89 75 89 76 / 20 20 70 60 LEE 92 76 91 76 / 60 10 70 0 SFB 92 76 90 77 / 60 10 50 10 ORL 92 76 90 77 / 60 20 60 10 FPR 90 75 89 76 / 30 20 70 60

MLB WATCHES/WARNINGS/ADVISORIES

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