Friday, January24, 2020
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Marine Weather and Tides
Cudjoe Key, 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 7:10AMSunset 6:07PM Friday January 24, 2020 8:20 PM EST (01:20 UTC) Moonrise 7:04AMMoonset 6:01PM Illumination 0% Phase: New Moon; Moon at 29 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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GMZ035 Expires:202001250330;;460179 Fzus52 Kkey 242121 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 421 Pm Est Fri Jan 24 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. Gmz032-035-250330- Bayside And Gulf Side From Craig Key To West End Of Seven Mile Bridge- Gulf Of Mexico From West End Of Seven Mile Bridge To Halfmoon Shoal Out To 5 Fathoms- 421 Pm Est Fri Jan 24 2020
Tonight..Variable winds near 5 knots, becoming north to northeast and increasing to 5 to 10 knots after midnight. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers in the evening. Patchy fog after midnight.
Saturday..North winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Saturday night..North winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop.
Sunday..North to northeast winds 10 to 15 knots, decreasing to 5 to 10 knots late in the afternoon. Seas 1 to 3 feet. NEarshore waters a light to moderate chop, becoming smooth to a light chop.
Sunday night..Variable winds near 5 knots. Seas 1 to 2 feet. NEarshore waters smooth. Isolated showers.
Monday..Southwest winds increasing to 15 to 20 knots. Seas 1 to 2 feet. NEarshore waters becoming choppy. Scattered showers and isolated Thunderstorms developing.
Monday night..Northwest to north winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Isolated showers.
Tuesday..North winds 10 to 15 knots, decreasing to near 10 knots in the afternoon. Seas 1 to 2 feet. NEarshore waters a light to moderate chop, becoming a light chop. Isolated showers.
Tuesday night..North to northeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Wednesday..North winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers.
Wednesday night..North to northeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.


7 Day Forecast for Marine Location Near Cudjoe Key, FL
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location: 24.64, -81.48     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 242000 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 300 PM EST Fri Jan 24 2020

DISCUSSION. Water vapor imagery highlights a closed cyclone working eastward across the Ohio River Valley, northeast of broad cyclonic curvature spreading east into the Bay of Campeche. A surface low near the closed cyclone is well to the north of a trailing cold front over the Gulf of Mexico. The frontal system over the Gulf is nearly parallel to the mean-layer flow, owing to its very slow progress to the southeast. Surface observations place a col-region to our northwest, with gentle breezes across the island chain. A tenacious, and surprisingly effective round of warm air advection and isentropic ascent has maintained scattered drizzly showers across the island chain. The most recent KBYX scans reveal decreased coverage, in line with the portrayals by isentropic charts. Temperatures across the island chain are in the 70s with dewpoints in the mid to upper 60s. Skies range from cloudy in the Lower Keys to mostly sunny in Key Largo.

FORECAST. The col-region will spread southeast across the Keys and South Florida this evening. Light northerly breezes, in conjunction with a cool and relatively moist air mass will spill south from the Mainland. We have retained the patchy fog mention for the island chain, although the most likely locations will be Bayside of the Middle and Upper Keys. The frontal system across the Gulf will finally reach the Keys Saturday, in tandem with the mid-level steering changes associated with the southern stream short wave racing east across the southern Gulf. Freshening north to northeast breezes are expected Saturday afternoon, although mainly for the northwestern half of the CWA. Breezes will diminish quickly on Sunday owing to the highly progressive pattern. A second southern stream dip in the jet stream will spread east across the Gulf Sunday night and Monday, deamplifying as it nears Florida. A surface low will move in tandem with the mid-upper level forcing, and will reach the Keys Monday afternoon or Monday evening, a little slower than what we expected yesterday at this time. Freshening southwesterly breezes, a short-lived episode of cyclonic curvature, weak instability, and adequate low level moisture, should allow for 50% rain and thunder chances on Monday. The progressive pattern continues Monday night through Tuesday night. A third undulation in the jet stream may support a second, eastward moving low pressure system Wednesday, although forecast confidence is low Wednesday and beyond. Our extended forecast features a return to climo PoPs, although given the possible model solutions, a couple periods of unsettled weather are possible Wednesday and then again on day seven. Through the seven day forecast, highs and lows will be around normal, mid 70s and upper 60s, respectively.

MARINE. No current watches, warnings, or advisories. From synopsis, a weak pressure pattern will prevail across the coastal waters of the Florida Keys tonight as a decaying cold front limps southeastward through the Gulf of Mexico. The frontal boundary is expected to pass through the coastal waters of the Florida Keys later Saturday. An area of low pressure will move eastward through the Gulf of Mexico Sunday and Sunday night, then move through the Florida Keys Monday.

AVIATION. Radar continues to show stubbornly persistent light to moderate showers near and south of both the EYW and MTH terminals. These showers are coming with localized MVFR conditions, with cigs below 020 and vsbys less than 6SM. Radar shows no decreasing coverage trend yet, but mesoscale guidance shows weak subsidence this evening which should decrease coverage until late tonight.

Then a weak cold front will limp past the terminals on Saturday morning. It will be preceded by a turn to light north winds late tonight off the recently cooled Gulfside waters. It is conceivable that some sea fog could develop and drift near the terminals late tonight, but the TAFs for now will indicate MVFR cigs between 010 and 020. A few disorganized showers could then accompany or closely follow the front on Sat morning. A drier air mass will then trickle in on Sat afternoon and clear out skies. A northerly cross wind will develop following frontal passage, but it should remain 10 kt or less.

PRELIMINARY POINT TEMPS/POPS. Key West 68 75 64 72 / 10 10 - 0 Marathon 67 76 63 73 / 10 10 - -

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

Public/Marine/Fire . CLR Aviation/Nowcasts . Haner Data Collection . NB

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KYWF1 - 8724580 - Key West, FL 18 mi50 min SE 1.9 G 1.9 74°F1017.1 hPa
SMKF1 - Sombrero Key, FL 20 mi20 min SSW 9.9 G 12 71°F 66°F
VCAF1 - 8723970 - Vaca Key, FL 20 mi50 min WSW 1.9 G 5.1 69°F 68°F1017.3 hPa
SANF1 - Sand Key, FL 25 mi20 min ESE 5.1 G 6 72°F 67°F
JKYF1 - Johnson Key, FL 42 mi80 min 65°F
LRKF1 - Little Rabbit Key, FL 42 mi140 min 66°F
MUKF1 - Murray Key, FL 43 mi80 min 67°F
PKYF1 - Peterson Key, FL 43 mi80 min 65°F
BKYF1 48 mi80 min 71°F
WRBF1 - Whipray Basin, FL 49 mi80 min WSW 2.9 68°F

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West Naval Air Station, FL12 mi27 minN 010.00 miMostly Cloudy74°F64°F74%1017 hPa
Key West International Airport, FL16 mi27 minSE 410.00 miOvercast72°F66°F82%1017.3 hPa
The Florida Keys - Marathon International Airport, FL24 mi27 minN 010.00 miMostly Cloudy69°F64°F87%1017 hPa

Link to 5 minute data for KNQX

Wind History from NQX (wind in knots)
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Last 24hrN4NE5NE6NE7E7NE5NE5E5E6NE5NE7NE7NE6NE7NE9NE10NE8CalmSW12W5NE4E8E4Calm
1 day agoN15N11NE8NE10NE7NE6N5N6N6NE6NE7NE6NE6NE9N10N8N7N8N8N8N7N6N6NE7
2 days agoN27
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Tide / Current Tables for Gopher Key, Cudjoe Bay, Florida
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Gopher Key
Click for Map
Fri -- 03:53 AM EST     -0.30 feet Low Tide
Fri -- 07:03 AM EST     Moonrise
Fri -- 07:10 AM EST     Sunrise
Fri -- 09:30 AM EST     0.86 feet High Tide
Fri -- 03:01 PM EST     0.16 feet Low Tide
Fri -- 04:44 PM EST     New Moon
Fri -- 06:01 PM EST     Moonset
Fri -- 06:05 PM EST     Sunset
Fri -- 08:44 PM EST     1.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.3-0-0.2-0.3-0.20.10.40.70.80.80.70.60.40.20.20.30.611.31.61.61.51.3

Tide / Current Tables for No Name Key (northeast of), Florida Current
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No Name Key (northeast of)
Click for Map
Fri -- 01:29 AM EST     -1.12 knots Max Ebb
Fri -- 05:20 AM EST     0.00 knots Slack
Fri -- 07:03 AM EST     Moonrise
Fri -- 07:10 AM EST     Sunrise
Fri -- 08:43 AM EST     0.99 knots Max Flood
Fri -- 11:28 AM EST     -0.00 knots Slack
Fri -- 02:13 PM EST     -0.82 knots Max Ebb
Fri -- 04:44 PM EST     New Moon
Fri -- 05:48 PM EST     0.00 knots Slack
Fri -- 06:00 PM EST     Moonset
Fri -- 06:04 PM EST     Sunset
Fri -- 08:46 PM EST     0.64 knots Max Flood
Fri -- 11:02 PM EST     -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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-0.9-1.1-1.1-0.9-0.6-0.20.30.70.910.80.3-0.3-0.7-0.8-0.8-0.6-0.30.10.40.60.60.50

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 (20,4,5,8)
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Ground Weather Radar Station Key West, FL
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Gulf Stream Current


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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.