Tuesday, March31, 2020
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Marine Weather and Tides
Key West, 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 7:17AMSunset 7:44PM Tuesday March 31, 2020 3:28 PM EDT (19:28 UTC) Moonrise 11:16AMMoonset 12:21AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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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GMZ044 Expires:202003312030;;357068 Fzus52 Kkey 311429 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 1029 Am Edt Tue Mar 31 2020 Florida Bay, Hawk Channel And Straits Of Florida From Ocean Reef To South Of Dry Tortugas, And The Extreme Southeastern Gulf Of Mexico, Including The Florida Keys National Marine Sanctuary Seas Are Given As Significant Wave Height, Which Is The Average Height Of The Highest 1/3 Of The Waves. Individual Waves May Be More Than Twice The Significant Wave Height. Gmz042>044-312030- Hawk Channel From Ocean Reef To Craig Key Out To The Reef- Hawk Channel From Craig Key To West End Of Seven Mile Bridge Out To The Reef- Hawk Channel From West End Of Seven Mile Bridge To Halfmoon Shoal Out To The Reef- 1029 Am Edt Tue Mar 31 2020
This afternoon..Southeast winds near 10 knots, becoming southwest to west in the afternoon. Seas 1 to 2 feet. NEarshore waters a light chop.
Tonight..West winds increasing to near 15 knots. Seas 1 to 3 feet. NEarshore waters becoming a moderate chop. Scattered showers after midnight.
Wednesday..Northwest winds 15 to 20 knots. Seas 2 to 4 feet. NEarshore waters choppy. Isolated Thunderstorms in the morning. Scattered showers.
Wednesday night..North to northeast winds decreasing to near 15 knots late. Seas 1 to 3 feet, except 3 to 4 feet west of cosgrove shoal light. NEarshore waters becoming a moderate chop.
Thursday..Northeast to east winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop.
Thursday night..Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop.
Friday..East winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop.
Friday night..Northeast to east winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop.
Saturday..East winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Isolated showers.
Saturday night..East winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Isolated showers.


7 Day Forecast for Marine Location Near Key West, FL
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location: 24.55, -82.13     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 311431 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1031 AM EDT Tue Mar 31 2020

DISCUSSION. Data from the Key West morning radiosonde balloon indicated a deep layer of dry and stable air above a shallow layer of maritime tropical air near the surface. Current radar scans are again void of precipitation echoes. Current air temperatures in most Keys island communities are in the lower 80s, with dewpoint temperatures in the lower 70s.

We offer no significant changes to prognostic reasoning at this time. Expect continued mostly sunny, warm, and humid conditions this afternoon with highs in the mid 80s, and only a slight chance for a shower late.

MARINE. No watches, warnings, or advisories are in effect for Florida Keys coastal waters at this time. Gentle to moderate south breezes today will turn west overnight in advance of a weakening cold front. The front will approach the Florida Keys by daybreak Wednesday, preceded by a line of broken rain showers. Winds will shift from west to northwest following the frontal passage, with a brief wind surge, possibly approaching Small Craft Advisory criterion for a time Wednesday afternoon or evening.

AVIATION. Through 01/12Z, prevailing VFR conditions are expected at both EYW and MTH. A broken line of rain showers likely will move from WNW to ESE across the Florida Keys between about 01/09Z and 01/13Z, with a slight chance for brief, sub-VFR conditions at either EYW or MTH. A wind shift from 300-330 degrees is likely in association with a frontal passage immediately thereafter.

KEY WATCHES/WARNINGS/ADVISORIES. FL . None. GM . None.

Public/Marine/Fire . Kasper Aviation/Nowcasts . Kasper Data Collection . KBL

Visit us on the web at weather.gov/key

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42095 13 mi29 min 80°F2 ft
KYWF1 - 8724580 - Key West, FL 17 mi59 min SSW 7 G 9.9 84°F 1013 hPa
GKYF1 40 mi89 min 81°F

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West International Airport, FL20 mi36 minSSW 810.00 miFair82°F71°F69%1012.5 hPa
Key West Naval Air Station, FL23 mi36 minSSW 910.00 miFair84°F71°F65%1012.3 hPa

Link to 5 minute data for KEYW

Wind History from EYW (wind in knots)
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Last 24hrSE9SE7SE8E9E9E10SE10SE9SE6SE7SE6SE6S7S8S8S8S7S7S9S9S10S9S7S8
1 day agoE14E12E13E15E14E15E11E10E5E13E13E14SE10SE9SE10SE11SE8SE8E8E9SE10SE9SE10SE10
2 days agoE15E16SE14E16
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Tide / Current Tables for Sand Key Lighthouse, Sand Key Channel, Florida (2)
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Sand Key Lighthouse
Click for Map
Tue -- 01:20 AM EDT     Moonset
Tue -- 02:54 AM EDT     0.78 feet High Tide
Tue -- 07:15 AM EDT     0.46 feet Low Tide
Tue -- 07:19 AM EDT     Sunrise
Tue -- 12:15 PM EDT     Moonrise
Tue -- 01:36 PM EDT     1.45 feet High Tide
Tue -- 07:43 PM EDT     Sunset
Tue -- 09:40 PM EDT     -0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.70.80.70.60.50.50.50.60.91.11.31.41.41.41.20.90.60.30.1-0-00.1

Tide / Current Tables for Boca Grande Channel, Florida Current
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Boca Grande Channel
Click for Map
Tue -- 01:21 AM EDT     Moonset
Tue -- 03:59 AM EDT     -0.00 knots Slack
Tue -- 06:52 AM EDT     -0.62 knots Max Ebb
Tue -- 07:20 AM EDT     Sunrise
Tue -- 09:56 AM EDT     0.00 knots Slack
Tue -- 12:10 PM EDT     0.59 knots Max Flood
Tue -- 12:15 PM EDT     Moonrise
Tue -- 02:39 PM EDT     -0.00 knots Slack
Tue -- 06:54 PM EDT     -0.96 knots Max Ebb
Tue -- 07:44 PM EDT     Sunset
Tue -- 10:24 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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10.90.60.3-0-0.3-0.5-0.6-0.5-0.300.40.60.50.2-0.1-0.4-0.7-0.9-1-0.9-0.6-0.20.3

Weather Map
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wmap_A
GEOS Local Image of    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 Key West, FL (15,3,4,5)
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Ground Weather Radar Station Key West, FL
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weather_mapweather_map weather_map

Gulf Stream Current


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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.