Marine Weather Net

Biscayne Bay Marine Forecast


REST OF TONIGHT

N
WINDS
10 - 15
KNOTS

THU

N
WINDS
5 - 10
KNOTS

THU NIGHT

SW
WINDS
5 - 10
KNOTS

FRI

SW
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
AMZ630 Forecast Issued: 1000 PM EST Wed Feb 21 2024

SMALL CRAFT SHOULD EXERCISE CAUTION
Rest Of Tonight...N Winds 10 To 15 Kt With Gusts To Around 20 Kt. Bay Waters A Moderate Chop.
Thu...N Winds 5 To 10 Kt Becoming E Se In The Afternoon. Bay Waters A Light Chop.
Thu Night...S Sw Winds 5 To 10 Kt. Bay Waters A Light Chop.
Fri...Sw Winds 15 To 20 Kt. Bay Waters Choppy.
Fri Night...W Sw Winds 15 To 20 Kt With Gusts To Around 25 Kt. Bay Waters Choppy. A Slight Chance Of Showers After Midnight.
Sat...Nw Winds 10 To 15 Kt With Gusts To Around 20 Kt. Bay Waters A Moderate Chop.
Sat Night...N Nw Winds 10 To 15 Kt With Gusts To Around 20 Kt. Bay Waters A Moderate Chop.
Sun...N Ne Winds 10 To 15 Kt With Gusts To Around 20 Kt Becoming Ne In The Evening. Bay Waters A Moderate Chop.
Sun Night...E Ne Winds 5 To 10 Kt. Bay Waters A Light Chop.
Mon And Mon Night...E Se Winds Around 10 Kt. Bay Waters A Light Chop.
SHARE THIS PAGE:           
Area Forecast Discussion
National Weather Service Miami FL
602pm EST Wednesday Feb 21 2024

.SHORT TERM... (Rest of today through Thursday) Issued at 1257pm EST Wednesday Feb 21 2024

Dry, breezy weather continues through the short term as South FL remains in the periphery of a surface high over the SE US. The pressure gradient will remain rather tight across the eastern half of the region as the surface high interacts with an area of low pressure well off of the Mid Atlantic coastline. This will create a rather breezy north to northwesterly wind flow today with gusty conditions possible in the afternoon hours especially along the immediate east coast. Cold air advection will keep temperatures below normal this afternoon as highs rise into the lower 70s across most areas.

While conditions will remain dry tonight, another chilly night is in store for the region with the north to northwesterly wind flow remaining in place. Low temperatures will drop into the lower 40s west of Lake Okeechobee and into the mid to upper 40s across the rest of Southwest Florida. The east coast metro areas will drop into the low to mid 50s. Mainly dry conditions will continue on Thursday as high pressure shifts into the western Atlantic. The pressure gradient will weaken which will cause the winds to diminish as they veer and gradually become more south southeasterly in the afternoon. This will allow for a moderating trend in temperatures as highs in the afternoon will rise into the mid 70s over the Lake Okeechobee region and east coast metro areas. High temperatures in the upper 70s will be possible across interior sections along and south of Alligator Alley.

Long Term
(Thursday night through next Tuesday) Issued at 212pm EST Wednesday Feb 21 2024

A longwave trough will sweep across the Eastern Seaboard this weekend with the base of the trough extending down through the Florida Peninsula. South Florida will be downstream from the trough base to begin the long term period, allowing for near surface winds to become southwesterly on Friday and result in a slight uptick in moisture and warmer air ahead of the incoming attendant cold front. The cold front will advect into the Florida Peninsula Friday night into Saturday, providing a source of lift for the warmer air. However, the front will be weakening in its approach to South Florida and the increase in moisture will still keep PWATs (Precipitable Waters) less than an inch ahead of the boundary. Therefore, combining a fairly weak area of low pressure with lower moisture content will keep chances for rain Friday night and Saturday morning low with just a slight chance for showers.

Once the front passes, cooler and drier air will be ushered in with high pressure quickly rebuilding back over the area. This will bring back dry and temperate weather for Sunday and into next week. Temperatures will thus be below average to start the week, particularly on Monday morning where chillier temperatures will be felt. Otherwise, temperatures will be slowly increasing daily into the middle of next week.

Marine
Issued at 1257pm EST Wednesday Feb 21 2024

Hazardous marine conditions will continue across the Atlantic waters today as a fresh to strong northerly wind flow remains in place. A lingering northeasterly swell will also affect the Atlantic waters causing wave heigheights to reach 6 to 8 feet today. Marine conditions will gradually improve over the Atlantic waters heading into Thursday as winds and seas begin to diminish. Over the Gulf Waters, a moderate northerly wind flow will remain in place today with seas remaining between 1 and 3 feet.

Beaches
Issued at 1257pm EST Wednesday Feb 21 2024

With a lingering northeasterly swell in place, there will be a high risk of rip currents across the Palm Beaches through the rest of the week. An elevated risk of rip currents will remain in place across the rest of the Atlantic Coast beaches during this time frame.

Fire Weather
Issued at 1257pm EST Wednesday Feb 21 2024

With a dry air mass in place, minimum relative humidity values may range from 30 to 35 percent across Southwest Florida this afternoon. While wind speeds will remain below threshold levels, the dry air mass will create elevated fire weather conditions across Southwest Florida this afternoon. Conditions will slowly improve on Thursday and into Friday as moisture begins to increase.

NOAA Miami FL Office: Watches - Warnings - Advisories
FL...High Rip Current Risk through Friday evening for FLZ168.

AM...Small Craft Advisory until 7am EST Thursday for AMZ650-651-670- 671.

GM...None.