Marine Weather Net

Deerfield Beach to Ocean Reef, FL Out 20 nm Marine Forecast


TONIGHT

E
WINDS
5 KNOTS

THU

E
WINDS
5 KNOTS

THU NIGHT

S
WINDS
5 - 10
KNOTS

FRI

S
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
AMZ651 Forecast Issued: 406 PM EDT Wed Jul 15 2026

Tonight...E Winds Around 5 Kt. Seas Around 2 Ft. Wave Detail: Se 1 Foot At 3 Seconds And N 1 Foot At 6 Seconds. Intracoastal Waters Smooth.
Thu...E Winds Around 5 Kt, Becoming Se In The Afternoon. Seas Around 2 Ft In The Morning, Then 1 Foot Or Less. Wave Detail: Se 1 Foot At 3 Seconds And N 1 Foot At 5 Seconds. Intracoastal Waters Light Chop.
Thu Night...S Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: S 1 Foot At 3 Seconds And N 1 Foot At 6 Seconds. Intracoastal Waters Light Chop.
Fri...S Winds 5 To 10 Kt. Seas Around 2 Ft In The Morning, Then 1 Foot Or Less. Wave Detail: S 1 Foot At 3 Seconds And N 1 Foot At 5 Seconds. Intracoastal Waters Light Chop.
Fri Night...S Winds 10 To 15 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less. Wave Detail: S 1 Foot At 3 Seconds And N 1 Foot At 5 Seconds. Intracoastal Waters Light Chop.
Sat...S Winds 5 To 10 Kt. Seas Less Than 2 Ft Or Less. Wave Detail: S 1 Foot At 3 Seconds. Intracoastal Waters Light Chop.
Sat Night...S Winds 5 To 10 Kt, Increasing To 10 To 15 Kt After Midnight. Seas Less Than 2 Ft Or Less. Intracoastal Waters Light Chop.
Sun...S Winds 10 To 15 Kt. Seas Around 2 Ft. Intracoastal Waters Light Chop.
Sun Night...S Winds 10 To 15 Kt. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less. Intracoastal Waters Light Chop.
Mon...S Winds 10 To 15 Kt. Seas Less Than 2 Ft Or Less, Then Around 2 Ft In The Afternoon. Intracoastal Waters Light Chop.
Mon Night...S Winds 10 To 15 Kt. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less. Intracoastal Waters Light Chop.
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Area Forecast Discussion
National Weather Service Miami FL
150pm EDT Wednesday July 15 2026

...New SHORT TERM... .KEY MESSAGES... Updated at 147pm EDT Wednesday July 15 2026

- Heat indices between 105-110 possible through the evening hours. Take appropriate precautions during extended periods outdoors.

- Isolated to scattered showers and thunderstorms expected this evening favoring interior and western areas of South Florida.

- Some of the storms could become strong to marginally severe with strong wind gusts, frequent lightning, heavy downpours, and small hail.

.SHORT TERM... (Rest of today through Thursday) Issued at 147pm EDT Wednesday July 15 2026

Few changes to the overall pattern through the short term period as an area of weak high pressure remains in place over the Gulf, in tandem with ridging aloft, supporting light southeasterly winds and some subsidence aloft. Additionally, we are still seeing the impacts associated with the presence of Saharan dust over the region, which is helping limit convective potential across the area. As a result, atmospheric profiles are looking fairly dry across the area, with PWATs (Precipitable Waters) in the 1.4-1.6 inch range, well below the 25th percentile for this time of year.

This setup will help produce isolated to scattered convective activity later this afternoon along sea breeze boundary collisions, with coverage maximized over the interior and southwest FL. Some of that activity could drift eastward towards the East Coast late in the evening, but chances of that occurring remain low (~30% PoPs). Any storms that develop will be slow-moving in nature, and could bring strong to severe gusty winds, frequent lightning and small hail. The forecast on Thursday looks to remain fairly similar, although some of the high res models do try to develop some additional activity along the interior and southeast metro areas in the evening. This will come as a result of more southerly- southeasterly winds bringing additional moisture over the area as the aforementioned area of high pressure shifts.

The heat will remain a concern through the period, with high temperatures forecast to reach the mid to upper 90s later this afternoon and heat indices in the 105-110 range. A Heat Advisory remains in effect for the urban areas in Miami-Dade, Broward, Palm Beach and Collier counties til later this evening, and we will likely need another one tomorrow.

Long Term
(Thursday night through Tuesday) Issued at 410am EDT Wednesday July 15 2026

Models show overall high pressure dominating the region, with the west Atlantic mid-level ridge extending into the SE CONUS and a surface ridge just E of the area. Prevailing weak pressure gradients will result in generally light to moderate winds through Friday, with sea breezes developing and push inland each afternoon. The SAL (Saharan Air Layer) should linger over the area through Friday. However, latest long range solutions are hinting at an earlier recovery of the airmass as a trough develops across the E CONUS and weakening the high pressure by Friday. This also helps in enhancing a little the overall southerly flow Friday afternoon, resulting in moisture filtering into SoFlo and POPs/Wx jumping back into the 40-60% range.

The overall synoptic scenario won't change much through early next week, with Saturday so far being the day with the highest moisture intrusion. Latest NBM came with up to 70% POPs/scattered to numerous thunderstorms for interior and eastern SoFlo Saturday afternoon. Sea breezes should develop each day and drive the development of deeper convection.

In terms of temperatures, highs through the long term will hit the mid-upper 90s each day. Heat advisory potential will be explored each day. Limit strenuous outdoor activities and take action when you see symptoms of heat exhaustion and heat stroke. For more on what you can do to prepare for and mitigate heat illness, visit ready.gov/heat.

Marine
Issued at 410am EDT Wednesday July 15 2026

A moderate southeasterly breeze will continue across most of the local waters through the end of the work week. The exception to this will be across the Gulf waters where winds will become west southwest each afternoon as the Gulf breeze develops. Scattered showers and thunderstorms will be possible across the local waters each day.

NOAA Miami FL Office: Watches - Warnings - Advisories
FL...
Heat Advisory until 7pm EDT this evening for FLZ068>070-072-074- 168-172-173.

AM...None. GM...None.