Tuesday, January21, 2020
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Marine Weather and Tides
Aventura, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:07AMSunset 5:56PM Tuesday January 21, 2020 6:23 AM EST (11:23 UTC) Moonrise 4:17AMMoonset 3:11PM Illumination 15% Phase: Waning Crescent; Moon at 26 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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AMZ651 Coastal Waters From Deerfield Beach To Ocean Reef Fl Out 20 Nm- Waters From Deerfield Beach To Ocean Reef Fl From 20 To 60 Nm Excluding The Territorial Waters Of Bahamas- 316 Am Est Tue Jan 21 2020
.small craft advisory in effect through Wednesday evening...
Today..North northwest winds 15 to 25 knots with gusts to around 30 knots. Along the coast, seas 2 to 4 feet with occasional seas to 5 feet. In the gulf stream, seas 4 to 6 feet with occasional seas to 8 feet building to 7 to 9 feet with occasional seas to 11 feet in the afternoon. Period 7 seconds. Intracoastal waters a moderate chop. Slight chance of light showers in the morning.
Tonight..North northwest winds 20 to 25 knots with gusts to around 30 knots along the coast to north northwest 25 to 30 knots with gusts to around 35 knots in the gulf stream. Seas 4 to 6 feet with occasional seas to 8 feet along the coast and 9 to 11 feet with occasional to 14 feet in the gulf stream. Period 8 seconds. North swell around 3 feet. Intracoastal waters rough in exposed areas.
Wednesday..North northwest winds 20 to 30 knots with gusts to around 35 knots. Along the coast, seas 4 to 6 feet with occasional seas to 8 feet building to 6 to 8 feet with occasional seas to 10 feet in the afternoon. In the gulf stream, seas 9 to 11 feet with occasional seas to 14 feet building to 11 to 13 feet with occasional seas to 17 feet in the afternoon. Period 9 seconds. North swell 3 to 5 feet increasing to 3 to 8 feet in the afternoon. Intracoastal waters rough. Slight chance of light showers in the morning. Chance of light showers in the afternoon.
Wednesday night..North northeast winds 10 to 15 knots with gusts to around 25 knots along the coast to north northeast 15 to 20 knots with gusts to around 30 knots in the gulf stream. Seas 8 to 10 feet with occasional seas to 13 feet along the coast and 12 to 14 feet with occasional to 18 feet in the gulf stream. Period 12 seconds. North swell 5 to 10 feet. Intracoastal waters choppy in exposed areas. Slight chance of showers.
Thursday..East northeast winds 10 to 15 knots with gusts to around 25 knots. Along the coast, seas 7 to 9 feet with occasional seas to 11 feet. In the gulf stream, seas 9 to 11 feet with occasional seas to 14 feet subsiding to 7 to 9 feet with occasional seas to 11 feet in the afternoon. North northwest swell 3 to 8 feet becoming 3 to 6 feet in the afternoon. Intracoastal waters a moderate chop. Slight chance of showers in the morning. Chance of showers in the afternoon.
Thursday night..East southeast winds 5 to 10 knots along the coast to east southeast 5 to 15 knots in the gulf stream. Seas 5 to 7 feet with occasional seas to 9 feet subsiding to 3 to 5 feet with occasional seas to 6 feet after midnight. North northwest swell 3 to 4 feet. Intracoastal waters a moderate chop. Chance of showers in the evening. Slight chance of showers after midnight.
Friday..South winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a light chop. Slight chance of showers.
Friday night..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop.
Saturday..West winds 10 knots. Seas around 2 feet. Intracoastal waters a light chop.
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- 316 Am Est Tue Jan 21 2020
Synopsis.. Fresh northerly winds will result in hazardous marine conditions over all the local waters through Wednesday. Meanwhile, a surface low pressure developing over the open atlantic waters to the north of the bahamas is forecast to create swell that will allow elevated seas to remain in the atlantic through the rest of the week. Drier air and a northerly flow are now establishing over the soflo coastal waters in the wake of a cold front.
Gulf stream hazards..Hazardous winds and seas will build through Wednesday, with elevated seas remaining through much of the week. The approximate location of the west wall of the gulf stream as of jan 20, 2020 at 1200 utc... 5 nautical miles southeast of fowey rocks. 7 nautical miles east northeast of port everglades. 5 nautical miles east northeast of lake worth. 10 nautical miles east southeast of jupiter inlet. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Aventura, FL
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location: 25.95, -80.14     debug


Area Discussion for - Miami-South Florida, FL
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FXUS62 KMFL 210803 AFDMFL

Area Forecast Discussion National Weather Service Miami FL 303 AM EST Tue Jan 21 2020

. Wind Chill Advisory: Tonight Across South Florida . . Hazardous Marine and Beach Conditions Linger .

Short Term (Today through Wednesday).

A drier, cooler, and breezy day for South Florida behind the departed cold front. Aloft, a mid-level low will cut off from the main trough over northeastern Florida and coastal Georgia today. A surface reflection of this feature will end up developing a low over the Atlantic waters north of the Bahamas. The mid-level low will push southward across the Atlantic waters on Wednesday before being reabsorbed and pushed back into the open Atlantic.

Temperatures today will struggle to reach into the 60s over portions of Southwest Florida with other portions of South Florida remaining in the mid to upper 60s. Some portions of the Atlantic coast may be able to warm to around 70 degrees, particularly those with an urban heat island effect in play. The brisk northwesterly flow will pick up by afternoon with a persistence forecast through the overnight and Wednesday morning hours. This flow regime will allow for polar continental air to push down the spine of the peninsula towards southern Florida.

A few threats may emerge from this setup overnight including the threat of hazardous wind chill values and the potential for a freeze over portions of inland Southwest Florida. The wind chill concern is fairly high confidence with this forecast issuance as the presence of the low to the east and the high building to the north will create a pretty tight gradient wind flow. The cold air advection due to the persistent northwesterly flow should allow wind chill values to fall below 35 degrees across most of South Florida for several hours overnight into Monday morning with some portions of inland Southwest Florida potentially experiencing wind chill values in the mid 20s. At this point in time, the confidence in the required 3- hour duration precludes the issuance of a Wind Chill Watch or Warning for inland Southwest Florida, but all of South Florida will be under a Wind Chill Advisory for tonight with this forecast package issuance.

There is a non-zero threat of a freeze for inland Southwest Florida tonight, particularly along the State Road 29 corridor of Glades, Hendry, and inland Collier Counties. One mitigating factor is that the elevated wind flow could maintain enough mixing to prevent temperatures from dropping below freezing. Mind you the forecast currently straddles freezing in these areas and this will have to be monitored. The statistical guidance does shed some insights into the potential for a freeze, particularly if the wind were to decouple more than forecast overnight in the area of concern which could allow for some more efficient radiational cooling. The majority of the raw and MOS guidance maintains temperatures above freezing with only the bias corrected members attempting to produce below-freezing temperatures. Due to the recency of this pattern change, the confidence in the ability of the bias-corrected guidance to identify a pattern for bias is low. The current forecast is a touch cooler than most of the MOS guidance which is cooler than the raw guidance.

Temperatures should begin to warm after sunrise on Wednesday with the stiff northwesterly wind gradually diminishing through the day. Atlantic moisture combined with the presence of the mid-level low over the Atlantic could produce some rain shower activity which should remain over the waters though a stray coastal shower cannot be ruled out, particularly in northern Palm Beach County. Maximum Temperatures will still struggle to reach the 60s across much of the area with only the immediate Atlantic coast reaching the upper 60s. Wednesday night will still be chilly but not as cold as tonight. Widespread upper 40s over inland Southwest Florida with 50s elsewhere except for lower 60s along the Atlantic coast are forecasted. Lighter wind and warmer temperatures will help warm wind chill values into the 40s across Southwest Florida and 50s across Southeast Florida.

Long Term.

Thursday through Tuesday .

As the surface low to our east treks further into the Atlantic, winds will continue to relax on Thursday, while also veering out of the east and modifying the airmass across South Florida. With warming and moistening air, showers will linger over the Atlantic waters and temperatures will rebound back to around seasonable values by the start of the weekend. However, upstream over Texas and the northwestern Gulf, phased long and shortwave troughing will help initiate cyclogenesis at the surface. As this system jets off towards the northeast, an attendant cold front will approach from the northwest, potentially crossing South Florida late Saturday into early Sunday. Convection may increase ahead or along the frontal boundary, but thunder remains out of the forecast at this time with models depicting the loss of upper level support.

Behind the front, temperatures look to cool back down slightly below normal. Daytime temperatures are forecast to be in the mid to upper 70s across South Florida before dropping to the upper 60s and low 70s behind the aforementioned cold front. Early morning lows will be in the mid to upper 50s across the interior and low 60s along the east coast ahead of the boundary, and thereafter, dip into the mid to upper 40s west of the Lake to the upper 50s and near 60 along the East Coast Sunday and Monday night.

For the early portions of next week, global models develop an area of precipitation over the central Gulf of Mexico behind the frontal boundary. However, models handle the fate of this area of precipitation slightly differently. The GFS keeps the the mass well to our southwest, while the ECMWF pushes some of the precipitation across South Florida. Therefore, have added the mention of showers to the forecast, but have split the difference by only raising PoPs across the peninsula to around 20% and higher over the Atlantic waters. Will continue to monitor over the next several days as things could certainly change as we get closer in time.

Marine.

The wind will drive the hazardous marine conditions over all the local waters into Wednesday with swell driving the maintenance of hazardous marine conditions in the Atlantic waters through the rest of the week. A non-zero threat of gale conditions, particularly frequent gusts to gale, is possible over the Atlantic waters off Palm Beach County. Confidence is not high enough for a Gale Watch or Warning at this time but a short-fused Gale Warning issuance cannot be ruled out of winds reach gale due to a strengthening low over the Atlantic waters.

Beach Forecast.

An elevated risk of rip currents along the Gulf and Atlantic beaches today with high risk for Palm Beach and Collier. The Gulf risk should begin to diminish as the wind dies down but the increasing swell in the Atlantic will allow the elevated risk to at least linger if not increase along the Atlantic beaches of South Florida through the end of the week with the potential lasting in the Palm Beaches into the weekend. High surf may become a concern for the Atlantic beaches, particularly the Palm Beaches, by Wednesday and lingering through late in the week.

Preliminary Point Temps/PoPs. West Palm Beach 67 42 67 60 / 10 10 20 20 Fort Lauderdale 69 45 66 61 / 0 0 20 20 Miami 70 44 66 58 / 0 0 10 10 Naples 62 38 63 52 / 0 0 0 0

MFL WATCHES/WARNINGS/ADVISORIES. FL . Wind Chill Advisory from 7 PM this evening to 9 AM EST Wednesday for FLZ063-066>075-168-172>174.

High Rip Current Risk through this evening for FLZ069-168.

AM . Small Craft Advisory until 7 PM EST Wednesday for AMZ630-651-671.

Small Craft Advisory until 7 PM EST Wednesday for AMZ650-670.

Small Craft Advisory from 4 PM this afternoon to 10 AM EST Wednesday for AMZ610.

GM . Small Craft Advisory until 7 AM EST Wednesday for GMZ656-657-676.

Marine . 02/RAG Beach Forecast . 02/RAG Short Term . 02/RAG Long Term . 11/HVN


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PEGF1 9 mi60 min NW 12 G 15 55°F 1018.8 hPa
VAKF1 - 8723214 - Virginia Key, FL 15 mi60 min NW 8 G 12 56°F 73°F1018.2 hPa
FWYF1 - Fowey Rocks, FL 25 mi24 min N 19 G 20 58°F 77°F1018.7 hPa (+0.4)
LKWF1 - 8722670 - Lake Worth, FL 46 mi54 min NW 13 G 17 53°F 75°F1017.6 hPa49°F

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hollywood, North Perry Airport, FL6 mi31 minNNW 1310.00 miFair53°F48°F83%1019.6 hPa
Fort Lauderdale/Hollywood International Airport, FL8 mi31 minNW 610.00 miFair52°F48°F89%1018.7 hPa
Miami, Opa Locka Airport, FL8 mi31 minNNW 1210.00 miFair54°F48°F83%1019.4 hPa
Miami, Miami International Airport, FL12 mi31 minNNW 810.00 miA Few Clouds55°F48°F80%1019.2 hPa
Fort Lauderdale, Fort Lauderdale Executive Airport, FL17 mi31 minNNW 910.00 miFair52°F48°F86%1019 hPa
Pompano Beach, Pompano Beach Airpark, FL21 mi31 minNW 107.00 miFair53°F48°F83%1018.8 hPa

Link to 5 minute data for KHWO

Wind History from HWO (wind in knots)
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Last 24hrNW6NW7NW7NW10NE8N10N9N8NW8NW10N9NW12NW10N11N11N8N8N8NW8NW11NW11NW11N10N13
1 day agoCalmCalmS5S10S10S7S7S6S7S10SE11S8S6S7SW4CalmW4W4CalmS3CalmW3W4NW7
2 days agoE16E15
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E10E9E7--E6SE9SE9SE8SE5SE4CalmCalmSE3Calm

Tide / Current Tables for Dumfoundling Bay, Florida
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Dumfoundling Bay
Click for Map
Tue -- 01:13 AM EST     -0.30 feet Low Tide
Tue -- 04:17 AM EST     Moonrise
Tue -- 07:08 AM EST     Sunrise
Tue -- 07:13 AM EST     2.10 feet High Tide
Tue -- 01:50 PM EST     0.16 feet Low Tide
Tue -- 03:10 PM EST     Moonset
Tue -- 05:55 PM EST     Sunset
Tue -- 07:16 PM EST     1.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.3-0.20.20.81.41.92.121.81.40.90.50.20.20.30.81.31.71.91.91.61.20.7

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Tue -- 12:24 AM EST     0.00 knots Slack
Tue -- 04:10 AM EST     2.08 knots Max Flood
Tue -- 04:17 AM EST     Moonrise
Tue -- 07:07 AM EST     Sunrise
Tue -- 07:09 AM EST     -0.00 knots Slack
Tue -- 10:50 AM EST     -1.43 knots Max Ebb
Tue -- 12:58 PM EST     0.00 knots Slack
Tue -- 03:11 PM EST     Moonset
Tue -- 04:33 PM EST     1.68 knots Max Flood
Tue -- 05:55 PM EST     Sunset
Tue -- 07:02 PM EST     -0.00 knots Slack
Tue -- 11:05 PM EST     -1.62 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.50.71.51.82.11.910.1-0.5-1-1.3-1.4-100.91.41.61.610-0.7-1.2-1.4-1.6

Weather Map
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wmap_A
GEOS Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Miami-South Florida, FL (6,6,7,8)
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Ground Weather Radar Station Miami, FL
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.