Monday, July13, 2020
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Marine Weather and Tides
Key Biscayne, 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 6:37AMSunset 8:16PM Monday July 13, 2020 7:43 PM EDT (23:43 UTC) Moonrise 12:21AMMoonset 1:05PM Illumination 39% Phase: Third Quarter Moon; Moon at 23 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- 326 Pm Edt Mon Jul 13 2020
Tonight..West southwest winds 5 to 10 knots. Seas 2 to 3 feet. Period 0 seconds. Intracoastal waters a light chop. Slight chance of showers in the evening.
Tuesday..West winds 5 knots becoming south in the afternoon. Seas less than 2 feet. Period 3 seconds. Intracoastal waters a light chop. Slight chance of showers and Thunderstorms.
Tuesday night..South winds 5 to 10 knots becoming west southwest after midnight. Seas less than 2 feet. Period 0 seconds. Intracoastal waters a light chop.
Wednesday..North northeast winds around 5 knots becoming east northeast in the afternoon. Seas less than 2 feet. Period 0 seconds increasing to 2 seconds in the afternoon. Intracoastal waters a light chop. Chance of showers and Thunderstorms in the afternoon.
Wednesday night..East winds 5 to 10 knots. Seas less than 2 feet. Intracoastal waters a light chop. Slight chance of showers in the evening, then chance of showers and slight chance of Thunderstorms after midnight.
Thursday and Thursday night..East winds 10 to 15 knots with gusts to around 20 knots. Seas around 2 feet. Intracoastal waters a moderate chop. Showers likely and chance of Thunderstorms.
Friday and Friday night..East southeast winds 10 to 15 knots with gusts to around 20 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. Thunderstorms likely. Showers likely. Chance of Thunderstorms after midnight.
Saturday..East winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. Showers likely and chance of Thunderstorms.
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- 326 Pm Edt Mon Jul 13 2020
Synopsis.. Southwesterly winds will continue across the atlantic and gulf coastal waters through early portions of this week before veering out of the northeast to east by the end of the week. Wave heights will generally remain at 3 feet or less across the local waters during this time frame. Scattered showers and Thunderstorms are possible each day. Winds and waves could be locally higher in and around any showers and Thunderstorms.
Gulf stream hazards..Winds and waves could be locally higher in and around showers and Thunderstorms. The approximate location of the west wall of the gulf stream as of jul 11, 2020 at 1200 utc... 6 nautical miles east southeast of fowey rocks. 12 nautical miles southeast of port everglades. 7 nautical miles east of lake worth. 7 nautical miles east southeast of jupiter inlet. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Key Biscayne village, FL
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location: 25.7, -80.17     debug


Area Discussion for - Miami-South Florida, FL
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FXUS62 KMFL 132330 AAA AFDMFL

Area Forecast Discussion . UPDATED National Weather Service Miami FL 730 PM EDT Mon Jul 13 2020

. 00z Aviation Update .

Aviation. VFR conditions expected through this cycle. Limited convection this evening will likely not impact the local terminals. Overnight and early Tuesday should be mostly rainfree. Winds will begin to transition to a more southerly or southeasterly direction with time with the exception being APF where the Gulf breeze will keep winds westerly. More T'storms on Tuesday will be possible. Limited coverage will keep VCs and PROB groups for now.

Prev Discussion. /issued 343 PM EDT Mon Jul 13 2020/

Short Term (Rest of Today and Tuesday) . Scattered showers and thunderstorms are developing across South Florida this afternoon. Additional convection is continuing to develop along outflow boundaries. Southwesterly flow will continue to focus the bulk of the convection over the interior and east coast. The main impacts being heavy rainfall, lightning and an isolated strong wind gust possible. Hi-res model guidance has much of the activity moving offshore and diminishing by early evening hours with only a few lingering remnant boundaries and storms remaining.

As we move into tomorrow a little drier airmass and some SAL over South Florida will limit the overall coverage across the region. Scattered convection will once again be possible as both the Gulf coast and the east coast seabreeze look to develop. The east coast seabreeze, at least with latest hi-res guidance looks to be able to push a littler further inland away from the coast then previous days. Overall impacts remain the same across South Florida with typical summer afternoon thunderstorms.

High temperatures tomorrow will be in the low to mid 90s with triple digit heat indices continuing across South Florida.

Long Term (Tuesday Night through Monday) . High pressure aloft will begin to spread across southern portions of the United States, eventually merging with the western Atlantic Subtropical Ridge (aka Bermuda High). Drier air in the mid levels and some subsidence will keep convective coverage somewhat limited through midweek. This will quickly change as the remainder of the week evolves. The strong well defined ridge to our north will help with a strong easterly flow from the Caribbean through the Gulf of Mexico. A series of disturbances will begin to move through the region starting as early as Thursday. With each passing wave of tropical moisture, diurnally driven showers and T'storms will be enhanced respectively.

Going into the upcoming weekend, conditions appear to be trending wetter. Late in the week a TUTT will develop and traverse through the area bringing an uptick in rain chances. As this feature moves west into the gulf, the GFS pings a fairly interesting mid level feature across the region. A modest gyre-like feature develops over Cuba, the FL Straits, and western Gulf with very modest vorts rotating around this feature. The ECM doesn't have this feature, but does have the aforementioned TUTT in relative close proximity. Regardless, either solution looks to keep the train of tropical moisture over our region through the remainder of the long term period with heavy rain possible. As for temperatures continued to drop modestly across the board this weekend and early next week as confidence in rain/cloud cover continues to gradually increase.

Marine . South/southwesterly winds over the local South Florida waters with scattered showers and thunderstorms. Heavy rainfall with gusty and erratic winds are possible in or near any showers and thunderstorms. Easterly wind flow will return later this week with increased tropical moisture and rain chances.

Preliminary Point Temps/PoPs. West Palm Beach 76 92 77 92 / 20 40 10 50 Fort Lauderdale 79 92 80 91 / 20 40 10 40 Miami 78 93 79 93 / 20 40 10 40 Naples 78 91 77 93 / 20 30 10 40

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

Marine . 33/Kelly Aviation . 28/Frye Short Term . 33/Kelly Long Term . 28/Frye


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 2 mi55 min 89°F
FWYF1 - Fowey Rocks, FL 8 mi43 min Calm G 1 85°F 86°F1015.8 hPa (-0.0)
MDKF1 31 mi163 min 92°F
HCEF1 - Highway Creek, FL 34 mi163 min 91°F
MNBF1 35 mi163 min 90°F
LSNF1 - Long Sound, FL 36 mi163 min 90°F
JBYF1 38 mi163 min 88°F
TRRF1 - Taylor River, FL 42 mi163 min 89°F
LMDF1 - Little Madeira, FL 44 mi163 min 89°F
CANF1 - Cane Patch, FL 45 mi163 min 85°F
BDVF1 - Broad River, FL 46 mi163 min 83°F
BNKF1 - Butternut Key, FL 46 mi163 min 90°F
NRRF1 47 mi163 min 88°F
WIWF1 - Willy Willy, FL 47 mi163 min 88°F
LRIF1 48 mi163 min 88°F
TBYF1 48 mi163 min 90°F

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Miami International Airport, FL10 mi50 minSSE 610.00 miMostly Cloudy86°F75°F70%1015.3 hPa
Miami, Opa Locka Airport, FL16 mi50 minSSW 510.00 miFair87°F71°F59%1015.4 hPa
Homestead Air Reserve Base, FL19 mi47 minWSW 510.00 miA Few Clouds88°F75°F65%1015.6 hPa
Hollywood, North Perry Airport, FL21 mi50 minSW 510.00 miFair0°F0°F%1015.7 hPa

Link to 5 minute data for KMIA

Wind History from MIA (wind in knots)
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Last 24hrSW4W3SW45S4S5S4S5S4S3SW3S4SW6SW6S9SW9W9W11W9W10NW6W6
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2 days agoS4SE7S3SW7SW6S5SW3SW4SW4SW3SW33W5NW3W65NW11
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Tide / Current Tables for Key Biscayne Yacht Club, Biscayne Bay, Florida
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Key Biscayne Yacht Club
Click for Map
Mon -- 01:21 AM EDT     Moonrise
Mon -- 03:56 AM EDT     1.73 feet High Tide
Mon -- 06:38 AM EDT     Sunrise
Mon -- 10:48 AM EDT     0.22 feet Low Tide
Mon -- 02:05 PM EDT     Moonset
Mon -- 04:41 PM EDT     1.68 feet High Tide
Mon -- 08:14 PM EDT     Sunset
Mon -- 11:11 PM EDT     0.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.711.41.61.71.61.41.10.80.50.30.20.40.71.11.41.61.71.61.310.80.60.5

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Mon -- 12:27 AM EDT     1.44 knots Max Flood
Mon -- 01:20 AM EDT     Moonrise
Mon -- 04:15 AM EDT     -0.00 knots Slack
Mon -- 06:34 AM EDT     -0.98 knots Max Ebb
Mon -- 06:37 AM EDT     Sunrise
Mon -- 07:32 AM EDT     -0.97 knots Min Ebb
Mon -- 08:32 AM EDT     -0.99 knots Max Ebb
Mon -- 10:39 AM EDT     0.00 knots Slack
Mon -- 01:00 PM EDT     1.50 knots Max Flood
Mon -- 02:04 PM EDT     Moonset
Mon -- 04:59 PM EDT     -0.00 knots Slack
Mon -- 08:14 PM EDT     Sunset
Mon -- 09:13 PM EDT     -0.86 knots Max Ebb
Mon -- 11:04 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.41.310.2-0.6-1-1-1-1-0.60.41.21.51.51.40.8-0-0.6-0.7-0.8-0.8-0.7-0.1

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Miami-South Florida, FL (19,4,5,8)
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Ground Weather Radar Station Miami, FL
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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.