Wednesday, April21, 2021
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Marine Weather and Tides
North Palm Beach, FL

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:48AMSunset 7:48PM Wednesday April 21, 2021 6:25 AM EDT (10:25 UTC) Moonrise 1:13PMMoonset 2:15AM Illumination 70% Phase: Waxing Gibbous; Moon at 9 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ650 Coastal Waters From Jupiter Inlet To Deerfield Beach Fl Out 20 Nm- Waters From Jupiter Inlet To Deerfield Beach Fl From 20 To 60 Nm- 402 Am Edt Wed Apr 21 2021
Today..West winds 5 to 15 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. Showers likely and chance of Thunderstorms.
Tonight..North northwest winds 5 to 15 knots. Along the coast, seas around 2 feet. In the gulf stream, seas around 2 feet building to 2 to 4 feet with occasional seas to 5 feet after midnight. Period 4 seconds. Intracoastal waters a light chop. Chance of showers and slight chance of Thunderstorms in the evening, then slight chance of showers after midnight.
Thursday..Northeast winds 10 to 15 knots. Seas 2 to 3 feet along the coast and 3 to 5 feet with occasional to 6 feet in the gulf stream. Period 5 seconds. Intracoastal waters a moderate chop. Slight chance of showers.
Thursday night..East northeast winds 10 to 15 knots along the coast to east northeast around 15 knots in the gulf stream. Seas 2 to 3 feet along the coast and 3 to 5 feet with occasional to 6 feet in the gulf stream. Period 7 seconds. Intracoastal waters a moderate chop.
Friday..East winds around 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Intracoastal waters a moderate chop. Slight chance of showers and Thunderstorms in the afternoon.
Friday night..East southeast winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters choppy in exposed areas.
Saturday..South southeast winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. Chance of showers and slight chance of Thunderstorms in the afternoon.
Saturday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. Slight chance of showers.
Sunday..Southwest winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a light chop. Slight chance of showers in the morning, then chance of showers and Thunderstorms in the afternoon.
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- 402 Am Edt Wed Apr 21 2021
Synopsis.. A stalled frontal boundary will be the focus for numerous showers and scattered Thunderstorms across the local waters through at least Wednesday, when the front is forecast to gradually advance southeastward through the area. Outside of locally gusty winds and heavy downpours accompanying showers and storms, marine conditions should remain generally benign until around Thursday morning, when moderate northerly winds will result in cautionary conditions for small craft operators. Cautionary conditions are forecast once again late in the week into the upcoming weekend as easterly winds strengthen across the area.
Gulf stream hazards..Showers and Thunderstorms with gusty winds and locally higher seas will be possible through Wednesday night. The approximate location of the west wall of the gulf stream as of apr 20, 2021 at 1200 utc... 11 nautical miles southeast of fowey rocks. 10 nautical miles east northeast of port everglades. 1 nautical miles east of lake worth. 3 nautical miles east northeast of jupiter inlet. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near North Palm Beach, FL
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location: 26.83, -80.06     debug


Area Discussion for - Miami-South Florida, FL
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FXUS62 KMFL 210748 AFDMFL

Area Forecast Discussion National Weather Service Miami FL 348 AM EDT Wed Apr 21 2021

SHORT TERM. (Today through Thursday)

* A stalled frontal boundary will gradually advance southeastward across South Florida today, supporting numerous showers and scattered thunderstorms across the area.

* Repeated rounds of heavy showers and storms could result in localized flooding today, especially across the east coast metros. In addition, locally gusty winds may accompany any stronger convective updrafts.

* The frontal boundary should slowly depart the area by Thursday morning, with generally drier conditions in its wake.

A WSW-ENE oriented frontal boundary continues to linger across the northern portions of South Florida, with southwesterly winds and rich moisture (lower/middle 70s dewpoints) remaining in place across South Florida. As a mid-level jet steak departs the base of a large- scale east-central CONUS trough, a poleward low-level mass flux will result in additional southwesterly moisture transport into South Florida during the overnight hours, with forecast PWs climbing into the 1.8 to 2.0 inch range by late this morning. The rich moisture and low-level confluence accompanying the frontal boundary will foster the development of numerous showers and scattered thunderstorms today -- generally spreading east-southeastward across southern Florida with the slowly advancing surface boundary/trough.

Considering the abundant deep-layer moisture and mid-level steering flow paralleling the surface frontal zone, training of heavy rain showers and thunderstorms could result in localized flooding, especially across the east coast metros of South Florida. In addition, enhanced westerly deep-layer bulk shear could allow for the development of a few loosely organized convective clusters, capable of producing locally heavy rainfall and gusty outflow winds.

Mosaic radar imagery currently shows bands of elevated showers developing across southern Florida, and this activity will likely expand in coverage and perhaps intensity from the late morning into the afternoon hours. Dense cloud coverage associated with the lingering frontal boundary and upstream convection across the southeastern Gulf of Mexico will likely limit daytime heating and associated boundary layer recovery today -- generally limiting the intensity of convective updrafts that develop this afternoon. That being said, any pockets of clearing and associated boundary layer destabilization will be worth monitoring for locally strong updraft development.

By Thursday morning, the aforementioned surface boundary will be departing the region, and rain/thunderstorm chances will generally decrease across the area. That being said, lingering low-level moisture along the tail end of the frontal boundary combined with diurnal heating will allow for afternoon thunderstorm development, mainly across the southern portions of South Florida.

LONG TERM. Thursday night through Tuesday night .

The boundary mentioned in the short term stalls just to the south, as high pressure builds to the east. This helps keep the boundary to the south for the beginning of the weekend, but also allows for moisture to be advected into the area, allowing for at least a slight chance of showers when combined with diurnal heating. By Saturday afternoon, a weak 500mb shortwave also moves across the area. This may bring enough dynamics for a few thunderstorms, mainly along the east coast and in the Lake region, where the sea/Lake breezes could also aid in convective development.

By Sunday, a low pressure system moves across the Ohio River Valley and into the mid-Atlantic states. This system will have an associated cold front, which looks to do the old Okeechobee teaser thing and stall around the Lake. This will allow for somewhat better chances of showers and thunderstorms for much of the area on Sunday. Beyond Sunday, the models diverge with the disposition of the front. The ECMWF has it slowly moving through, and clearing South Florida by Monday afternoon. The GFS is less progressive and has the front hanging around for the beginning of the week. So, while the current forecast does not mention any precipitation for Monday at this time, would not be surprised if it gets added with future packages.

AVIATION(06Z TAFS). A WSW-ENE oriented surface boundary will remain draped across the northern portions of S FL overnight prior to advancing southeastward across the area during the day on Wednesday. The diffuse nature of the boundary introduces large uncertainty in both the timing and coverage of showers and storms throughout the period, so generally handling this with PROB30 and VC groups. Sub- VFR conditions will accompany the stronger showers and storms, and AMDs may become necessary as forecast confidence increases.

MARINE. A stalled frontal boundary will be the focus for numerous showers and scattered thunderstorms across the local waters through at least Wednesday, when the front is forecast to gradually advance southeastward through the area. Outside of locally gusty winds and heavy downpours accompanying showers and storms, marine conditions should remain generally benign until around Thursday morning, when moderate northerly winds will result in cautionary conditions for small craft operators. Cautionary conditions are forecast once again late in the week into the upcoming weekend as easterly winds strengthen across the area.

BEACHES. Numerous showers and scattered thunderstorms will affect the South Florida beaches today, with heavy downpours and locally gusty winds possible. The rip current risk will increase across the Atlantic beaches late this week into the upcoming weekend as easterly/onshore winds strengthen.

PRELIMINARY POINT TEMPS/POPS. Miami 84 69 84 72 / 60 30 30 10 West Kendall 85 67 86 70 / 60 30 30 10 Opa-Locka 84 67 84 69 / 60 30 30 10 Homestead 85 67 84 70 / 60 30 30 10 Fort Lauderdale 84 69 84 72 / 60 30 30 10 N Ft Lauderdale 84 68 82 71 / 60 30 30 10 Pembroke Pines 84 67 84 70 / 60 30 40 10 West Palm Beach 84 64 81 68 / 60 20 20 0 Boca Raton 84 67 83 70 / 60 30 30 0 Naples 81 64 86 67 / 60 0 10 0

MFL WATCHES/WARNINGS/ADVISORIES. FL . None. AM . None. GM . None.

Today through Thursday and Aviation/Marine . Weinman Thursday Night through Tuesday . 13

Visit us at weather.gov/miami

Follow us on Facebook and Twitter at: www.facebook.com/nwsmiami www.twitter.com/nwsmiami


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LKWF1 - 8722670 - Lake Worth, FL 15 mi56 min SW 4.1 G 6 74°F 78°F1013.9 hPa70°F
SPGF1 - Settlement Point, GBI 57 mi86 min NW 17 G 21 75°F 1014.9 hPa (+0.3)

Wind History for Lake Worth Pier, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
West Palm Beach - Palm Beach International Airport, FL11 mi33 minWSW 510.00 miA Few Clouds73°F69°F87%1014.8 hPa

Link to 5 minute data for KPBI

Wind History from PBI (wind in knots)
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Tide / Current Tables for North Palm Beach, Florida
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North Palm Beach
Click for Map
Wed -- 03:15 AM EDT     Moonset
Wed -- 03:59 AM EDT     2.60 feet High Tide
Wed -- 06:50 AM EDT     Sunrise
Wed -- 10:24 AM EDT     0.69 feet Low Tide
Wed -- 02:12 PM EDT     Moonrise
Wed -- 04:17 PM EDT     2.53 feet High Tide
Wed -- 07:47 PM EDT     Sunset
Wed -- 10:47 PM EDT     0.39 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.62.12.52.62.52.21.71.30.90.70.711.41.92.32.52.52.21.81.20.80.50.4

Tide / Current Tables for Lake Worth Creek, Day Beacon 19, ICWW, Loxahatchee River, Florida
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Lake Worth Creek
Click for Map
Wed -- 03:15 AM EDT     Moonset
Wed -- 04:46 AM EDT     1.92 feet High Tide
Wed -- 06:50 AM EDT     Sunrise
Wed -- 11:19 AM EDT     0.61 feet Low Tide
Wed -- 02:12 PM EDT     Moonrise
Wed -- 05:04 PM EDT     1.87 feet High Tide
Wed -- 07:47 PM EDT     Sunset
Wed -- 11:42 PM EDT     0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.91.31.61.91.91.81.61.310.70.60.70.91.21.51.81.91.81.61.30.90.60.4

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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