Marine Weather Net

Deerfield Beach to Ocean Reef, FL Out 20 - 60 NM Marine Forecast


TONIGHT

W
WINDS
10
KNOTS

TUESDAY

N
WINDS
15 - 20
KNOTS

TUESDAY NIGHT

NNE
WINDS
15 - 20
KNOTS

WEDNESDAY

NE
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
AMZ671 Forecast Issued: 348 PM EST Mon Nov 30 2020

SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
Tonight...West Winds 10 To 20 Knots Becoming North Northwest Around 20 Knots After Midnight. Gusts Up To 30 Knots. Seas 2 To 3 Feet Building To 3 To 5 Feet With Occasional Seas To 6 Feet After Midnight. Period 4 Seconds. Intracoastal Waters A Moderate Chop. Showers And Slight Chance Of Thunderstorms In The Evening, Then Showers Likely After Midnight.
Tuesday...North Winds 15 To 20 Knots With Gusts To Around 25 Knots. Seas 5 To 7 Feet With Occasional Seas To 9 Feet. Period 6 Seconds. Intracoastal Waters A Moderate Chop.
Tuesday Night...North Northeast Winds 15 To 20 Knots With Gusts To Around 25 Knots. Seas 5 To 7 Feet With Occasional Seas To 9 Feet. Period 7 Seconds. Intracoastal Waters Choppy In Exposed Areas.
Wednesday...Northeast Winds 15 To 20 Knots With Gusts To Around 25 Knots. Seas 4 To 6 Feet With Occasional Seas To 8 Feet. Period 7 Seconds. Intracoastal Waters Choppy In Exposed Areas.
Wednesday Night And Thursday...East Winds 15 To 20 Knots With Gusts To Around 25 Knots. Seas 4 To 6 Feet With Occasional Seas To 8 Feet. Intracoastal Waters Choppy In Exposed Areas.
Thursday Night...East Winds Around 15 Knots With Gusts To Around 20 Knots. Seas 2 To 4 Feet With Occasional Seas To 5 Feet. Intracoastal Waters A Moderate Chop. Slight Chance Of Showers After Midnight.
Friday...East Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Intracoastal Waters A Moderate Chop. Slight Chance Of Showers In The Morning, Then Chance Of Showers In The Afternoon.
Friday Night...East Winds 5 To 10 Knots. Seas Around 2 Feet. Intracoastal Waters A Light Chop. Chance Of Showers Through The Night. Slight Chance Of Thunderstorms After Midnight.
Saturday...North Winds 5 To 10 Knots. Seas Around 2 Feet. Intracoastal Waters A Light Chop. Slight Chance Of Thunderstorms In The Morning. Slight Chance Of Showers.
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AMZ600: Synopsis for Jupiter Inlet to Ocean Reef FL out to 60 nm and for East Cape Sable to Bonita Beach FL out to 60 nm
348 PM EST Mon Nov 30 2020

A cold front moving through South Florida waters this afternoon will continue to move southward into the Florida Keys tonight. This will allow for high pressure to build into the Florida Peninsula Tuesday into Tuesday night. Expect hazardous marine conditions to develop tonight and last through at least mid week, then gradually subsiding towards the end of the forecast period as high pressure returns to the region.

Gulf Stream Hazards: There is a slight chance of thunderstorms this afternoon and evening over the Gulf Stream. Hazardous seas and gusty winds behind the frontal passage.
The approximate location of the west wall of the Gulf Stream as of Nov 28, 2020 at 1200 UTC...
- 2 nautical miles southeast of Fowey Rocks.
- 12 nautical miles east northeast of Port Everglades.
- 6 nautical miles east southeast of Lake Worth.
- 9 nautical miles southeast of Jupiter Inlet.
Area Forecast Discussion
...UPDATED National Weather Service Miami FL
748pm EST Monday Nov 30 2020

A cold front located over from about Naples northeast across Lake Okeechobee into East Central Florida will continue to move southward this evening through South Florida and into the Florida Keys late tonight. This will allow for the west to southwest winds to swing to a more northwest direction after midnight and push the ongoing light showers over the southern areas of South Florida into the Atlantic waters. Therefore, a slight to low end chance of light showers will continue over the southern areas of South Florida for the evening hours before going dry for the overnight hours. The northern areas of South Florida will remain dry for tonight.

Rest of the forecast looks good at this time and no other changes are planned.

.Prev /issued 621pm EST Monday Nov 30 2020/

Aviation... A cold front will continue to move southward into the Florida Keys tonight. This will allow for the wind flow to swing from a westerly direction this evening to a northwest direction after midnight into Tuesday. There could still be a few showers around this evening with the passage of the front, but the coverage will be few and far between to keep the VCSH in the TAF sites this evening. The ceiling and vis will be in VFR conditions, but could fall into MVFR (Marginal Visual Flight Rules) conditions this evening until the front clear the region.

Prev /issued 300pm EST Monday Nov 30 2020/

Short Term
Rest of Today... A cold front continues to move down the Florida peninsula and currently a broken line of showers with an isolated embedded thunderstorm is moving through the Lake Okeechobee and interior region. Convective parameters continue to be modest at best in supporting organized enhanced convection as it moves across the peninsula. Diurnal heating along the east coast may help to enhance some of the instability with effective bulk shear values of 35-40 knots supporting any organized cells. The limiting factors continue to be the lack of moisture return in the mid levels above 850mb and poor thermodynamic profiles aloft. Main impacts will be heavy downpours with the strongest showers and storms capable of producing lightning and isolated strong wind gust.

Tonight behind the frontal passage dry and cooler conditions will move in across South Florida.

Tuesday... High pressure will build across the SE CONUS behind the frontal passage. This will allow for northwest to northerly wind flow with drier and cooler air filtering down the peninsula. This will lead to a sunny and cool day across South Florida with temperatures below normal. Highs tomorrow will be in the low 60s around the Lake Okeechobee region, with mid and upper 60s to near 70 along the east coast coastal areas.

Long Term (Wednesday Through Sunday)... Wednesday And Thursday
As the sun sets on the short term and the extended period begins, temperatures will plummet towards the coldest of the season. By Wednesday morning, overnight lows should be in the upper 40s to lower 50s across the eastern coastal-metro areas, mid 40s over the interior and western coastal-metro, and mid 30s across the western Lake Region. The main concern for vulnerable populations will be the wind chill as feel-like temperatures will be in the lower 30s across portions of Glades and Hendry Counties to mid 30s and lower 40s elsewhere.

Howbeit, this cold snap will be short-lived as high pressure continues sliding further eastward, veering the flow back out of the east. The added easterly component in the flow will modify the continental airmass to more maritime, inciting a warming trend and returning temperatures to near-normal for the remainder of the work week.

Friday through Sunday
A slight moistening trend will also gradually increase rain chances by the end of the week and into the weekend as a remnant boundary lifts northward as a warm front. Models are still struggling with the amplified pattern aloft and the genesis of a low in the Gulf, however, they are in some agreement regarding a robust system developing over the weekend near the eastern seaboard, along with the next frontal passage across South Florida. However, there still remains a fair amount of uncertainty regarding the variability among guidance members in timing, location, trajectory, and overall impacts to South Florida with this next frontal boundary. This will continue to monitored with each forecast cycle.

Marine... A cold front moving through the region with increasing winds and seas. Scattered showers and thunderstorms associated with the front as it moves through today and overnight. Hazardous marine conditions are expected with the frontal passage and will persist through the week.

Beach Forecast... There is moderate risk of rip currents for Collier County beaches and all beaches of Palm Beach county with a lingering NE swell. The risk level over the all South Florida beaches will increase behind the passage of a cold front.

Fire Weather... A cold front will continue to move through South Florida this afternoon and into the Florida keys tonight. High pressure will then build into the region on Tuesday allow for a northerly wind flow over South Florida which in turn will bring in much drier air to the region. This in turn will allow for the relative humidity to fall into the lower to mid 30s over South Florida on Tuesday. The transport winds will also be around 15 knots over South Florida on Tuesday. However, the ERC (Energy Release Component) across South Florida is forecast to be in the teens to lower 20s at this time. Therefore, no fire weather headlines are expected for South Florida for Tuesday.

NOAA Miami FL Office: Watches - Warnings - Advisories
FL...High Rip Current Risk from 7am EST Tuesday through Tuesday evening for FLZ069.

AM...Small Craft Advisory until 7pm EST Tuesday for AMZ650-651-670- 671.

GM...Small Craft Advisory until 7pm EST Tuesday for GMZ656-657-676.

Update...54/BNB Marine...33/Kelly Aviation...54/BNB Beach Forecast...33/Kelly Short Term
33/Kelly Long Term...11/HVN