textproduct: Melbourne

KEY MESSAGES

Issued at 248 AM EST Tue Dec 9 2025

- Poor to hazardous boating conditions forecast through this afternoon, with poor boating conditions then lingering across the Gulf Stream waters through midweek.

- Isolated showers forecast across Okeechobee and the Treasure Coast today. Otherwise, mostly dry conditions forecast through the remainder of the work week.

- Temperatures remaining near to slightly below normal.

DISCUSSION

Issued at 248 AM EST Tue Dec 9 2025

Today... High pressure builds across the much of the eastern U.S. today. Despite this, an onshore north-northeast wind will keep low level moisture in place, especially across the south. Models suggests clouds clearing early in the day for northern areas before rebuilding late in the day. This morning's CAMs are rather consistent in showing light showers develop across Okeechobee and the Treasure Coast where weak wind divergence is modeled at 700mb and low level RHs are greater than 85%. Have deviated from dry NBM PoPs to include at least a 20% chance of showers for this area throughout the day. Activity should remain shallow with a layer of dry air above 700mb, and lightning probabilities remain below mentionable levels. Further north, conditions look to remain mostly dry. High temperatures range the mid to upper 60s near and north of Orlando, with low 70s forecast further south.

Wednesday-Thursday... High pressure weakens Wednesday as a cold front drops into the southeast U.S. The weak front then passes central Florida Thursday before high pressure begins to rebuild from the west. Only a subtle dip in temperatures will be realized with highs falling a few degrees below normal Thursday afternoon. Highs on Wednesday mostly spread the low 70s from Osceola and Brevard northward, increasing into the mid to upper 70s across Okeechobee and the Treasure Coast. By Thursday, highs fall into the upper 60s and near 70 degrees from Orlando northward with temperatures in the low 70s further south. Low temperatures widely spreading the 50s Wednesday morning dip into the upper 40s and low 50s Thursday morning. Can't rule out a stray coastal shower from the Cape southward on Wednesday. Otherwise, conditions remain mostly dry.

Friday-Monday... High pressure further builds across the state Friday, persisting into the weekend. Low pressure moves offshore the Mid Atlantic coast early Sunday morning, dragging the next cold front across central Florida late in the weekend. A much stronger area of high pressure then builds across much of the eastern U.S. on Monday. Dry on Friday with modest rain chances creeping back into the forecast this weekend. Highs near normal late week climb into the mid to upper 70s this weekend before more widely ranging the 70s Monday behind the front. Friday looks to be the coolest morning of the period behind Thursday's front, and interior lows are forecast in the mid to upper 40s. Warmer along the coast and across Martin county with lows in the low to mid 50s. Morning temperatures creep upward through the weekend, reaching the mid to upper 50s across the interior and upper 50s to low 60s along much of the coast and Martin county.

MARINE

Issued at 248 AM EST Tue Dec 9 2025

Hazardous conditions continue across the Gulf Stream as seas 6-8 ft slowly diminish. Small Craft Advisories continue for the Gulf Steam waters through 4 PM. North-northeast winds peaking around 20-25 kts early this morning are expected to diminish by sunrise, and the current Small Craft Advisories for nearshore Volusia and nearshore Brevard are set to expire at 7 AM. However, small craft should exercise caution across these zones into late morning for winds of 15-20 kts. North-northeast winds later subside to 10-15 kts across all zones into the afternoon. Seas diminish 3-4 ft nearshore tonight with seas up to 6 ft offshore persisting through late Thursday. Offshore flow develops mid week briefly increasing 15-20 kts early Thursday as a weak cold front passes the waters. Generally favorable boating conditions are then favored Friday and into the weekend. Isolated to scattered showers are forecast across the waters through Wednesday, mostly south of the Cape. A period of dry weather settles into late week.

AVIATION

(12Z TAFs) Issued at 614 AM EST Tue Dec 9 2025

VFR conditions prevailing. Mostly dry today, though a few to scattered showers will be possible by late morning/early afternoon along the Treasure Coast. VCSH included through the afternoon there. Then, drier conditions are forecast area-wide by this evening. Northerly winds through much of the TAF period at 8-12 kts today. Gusts up to 20 kts are expected along the Treasure Coast, as the pressure gradient continues to weaken. Lighter winds overnight will become westerly into Wednesday.

PRELIMINARY POINT TEMPS/POPS

DAB 67 52 71 49 / 0 0 0 0 MCO 68 54 71 52 / 0 0 0 0 MLB 70 58 74 52 / 10 10 10 0 VRB 72 58 76 50 / 20 20 10 0 LEE 67 49 70 50 / 0 0 0 0 SFB 68 52 72 50 / 0 0 0 0 ORL 67 53 71 52 / 0 0 0 0 FPR 72 58 77 49 / 20 20 10 0

MLB WATCHES/WARNINGS/ADVISORIES

FL...None. AM...Small Craft Advisory until 7 AM EST this morning for AMZ550-552.

Small Craft Advisory until 4 PM EST this afternoon for AMZ555- 570-572-575.