Wednesday, December11, 2019
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Marine Weather and Tides
Cudjoe Key, FL

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:59AMSunset 5:40PM Wednesday December 11, 2019 12:25 PM EST (17:25 UTC) Moonrise 5:26PMMoonset 6:18AM Illumination 100% Phase: Full Moon; Moon at 15 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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GMZ032 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- 1016 Am Est Wed Dec 11 2019
This afternoon..East to southeast winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers.
Tonight..Northeast to east winds near 10 knots, increasing to 15 to 20 knots after midnight. Seas building to 2 to 3 feet. NEarshore waters a light chop, becoming choppy. Scattered showers developing.
Thursday..Northeast to east winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. NEarshore waters choppy, becoming a moderate chop. Isolated showers.
Thursday night..East winds near 15 knots, decreasing to 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop, becoming a light to moderate chop. Isolated showers.
Friday..Southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. NEarshore waters a light to moderate chop, becoming a light chop. Isolated showers.
Friday night..Southeast to south winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Scattered showers.
Saturday..Southwest to west winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers.
Saturday night..Northwest to north winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Isolated showers.
Sunday..Northeast to east winds near 10 knots. Seas building to 1 to 2 feet. NEarshore waters a light chop.
Sunday night..Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop.


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 111617 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1117 AM EST Wed Dec 11 2019

DISCUSSION. Currently - Water vapor imagery along with analysis shows a broad upper level trough extending from the Gulf of Mexico poleward to the the Hudson Bay. Upstream a shortwave ridge is moving eastward across the spine of the Rocky Mountains. Behind this ridge is the next shortwave trough which moved inland from California and now resides in the Intermountain West. At the surface, a cold front has descended down upon the north Gulf coast and is stalling. High pressure over the Ozarks is helping to drive this front and effectively stalling it along the coast as it moves east. Another high pressure cell over the upper Missouri River Valley is quickly moving southeast and will reinforce the aforementioned high pressure. Further upstream, an elongated surface trough is in its infancy stage along the lee of the Rocky Mountains in response to the weak upper level shortwave in the Intermountain West.

Taking a look closer at home, Key West radar shows a diminishing trend on the shower activity. For a while a narrow band of moderate to heavy showers sat between the eastern end of Key West and Big Coppitt Key. Some locations received around or just over 1 inch, especially over Stock Island and Boca Chica. This activity for the most part has tapered back somewhat to the south and southwest of the Lower Keys. Another narrow band of isolated showers extends from the Bayside waters, across the Middle Keys, and nearshore waters south of the Middle Keys. This activity is moving northwest. As for temperatures, they are in the lower to mid 80s with the exception of Key West and vicinity where the rain has kept temperatures in the upper 70s. Winds are light around 10 mph from the east and southeast across the entire island chain.

Short Term Update - Additional showers remain possible through the remainder of the day as weak speed convergence will persist along with increasing moisture flux. The 12Z RAOB sounding this morning showed a PW value of 1.73 inches which sits above the 90 percentile for this time of year. With that being said, a subsidence layer with drier air was centered around 700 mb and will limit growth. Some of the stronger activity may be able to break through this layer given the decent instability, as there was an isolated lightning strike south of Sand Key as of the writing of this discussion. Even with the decent instability in place, the lack of any large scale ascent and the presence of the dry layer in the mid levels will limit the areal coverage of any additional would-be thunderstorms. As such PoPs will be kept at 20 percent. Temperatures are on par to reach to near record levels again. Today's record for the high temperature at Key West is 85 degrees while Marathon's is 86 degrees. Otherwise, no changes planned or needed.

MARINE. Winds have slacken this morning to light to gentle breezes across the waters north of the island chain with gentle to occasional moderate breezes across Hawk Channel and the Florida Straits. This slackening will be brief as the pressure gradient will be increasing tonight in advance of the cold front that will stall along the Gulf coast. Model guidance is indicating a significant pressure difference of around 8 mb between Jacksonville and Key West which coincides with a Small Craft Advisory for our entire marine district. For now, will headline a Small Craft Advisory may be needed for Gulf waters, Hawk Channel and the Straits of Florida but retain 15 to 20 knots. Stay tuned to later marine forecasts. Thereafter, moderate east winds on Thursday afternoon and night will abate appreciably from Friday through most of this weekend.

AVIATION. VFR conditions to prevail at the Key West and Marathon terminals. Vicinity showers are expected throughout the day for Key West due to a convergence zone near the Lower Keys. These showers may produce brief periods of sub VFR conditions. East to southeast winds are expected through this afternoon, becoming northeasterly tonight as a cold front approaches the island chain.

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

Public/Marine/Fire . LIW Aviation/Nowcasts . SDR Data Collection . NB

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
KYWF1 - 8724580 - Key West, FL 18 mi56 min S 6 G 8.9 77°F 81°F1021.9 hPa
SMKF1 - Sombrero Key, FL 20 mi36 min SE 7 G 8.9 80°F 75°F
VCAF1 - 8723970 - Vaca Key, FL 20 mi56 min SE 7 G 11 82°F 77°F1021.7 hPa
SANF1 - Sand Key, FL 25 mi36 min S 9.9 G 11 76°F 1019.9 hPa72°F
42095 30 mi26 min 79°F2 ft
LONF1 - Long Key, FL 36 mi36 min 81°F 1020.6 hPa75°F
JKYF1 - Johnson Key, FL 42 mi86 min 79°F
LRKF1 - Little Rabbit Key, FL 42 mi146 min 76°F
MUKF1 - Murray Key, FL 43 mi86 min 78°F
PKYF1 - Peterson Key, FL 43 mi86 min 76°F
BKYF1 48 mi86 min 80°F
WRBF1 - Whipray Basin, FL 49 mi86 min E 4.1 78°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 mi2.5 hrsWNW 55.00 miLight Rain79°F71°F77%1021.7 hPa
Key West International Airport, FL16 mi33 minSSW 710.00 miFair77°F72°F85%1021.5 hPa
The Florida Keys - Marathon International Airport, FL24 mi33 minE 59.00 miLight Rain81°F75°F82%1021.2 hPa

Link to 5 minute data for KNQX

Wind History from NQX (wind in knots)
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Last 24hrSE13SE12SE11E10E9E9E8E9SE8SE9SE8SE8SE8SE7SE7E6SE5E5E6S4SW9W5--SW6
1 day agoE13E10E11SE8E12E8SE9E9E9E10E9E11SE10SE11SE10SE11SE10SE10SE12SE11SE12SE12SE12SE13
2 days agoE10E11E12E10E9E11E10E11E11E6NE5NE5NE6NE6E6NE5NE5NE5E5NE5E6E9E12E13

Tide / Current Tables for Gopher Key, Cudjoe Bay, Florida
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Gopher Key
Click for Map
Wed -- 03:16 AM EST     -0.09 feet Low Tide
Wed -- 06:18 AM EST     Moonset
Wed -- 06:59 AM EST     Sunrise
Wed -- 08:56 AM EST     1.24 feet High Tide
Wed -- 02:36 PM EST     0.41 feet Low Tide
Wed -- 05:25 PM EST     Moonrise
Wed -- 05:38 PM EST     Sunset
Wed -- 08:07 PM EST     1.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.30-0.1-00.20.60.91.11.21.210.80.60.40.40.711.41.71.91.81.71.3

Tide / Current Tables for No Name Key (northeast of), Florida Current
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No Name Key (northeast of)
Click for Map
Wed -- 01:00 AM EST     -1.20 knots Max Ebb
Wed -- 04:38 AM EST     0.00 knots Slack
Wed -- 06:17 AM EST     Moonset
Wed -- 06:59 AM EST     Sunrise
Wed -- 08:02 AM EST     1.00 knots Max Flood
Wed -- 11:03 AM EST     -0.00 knots Slack
Wed -- 01:39 PM EST     -0.96 knots Max Ebb
Wed -- 05:14 PM EST     0.00 knots Slack
Wed -- 05:24 PM EST     Moonrise
Wed -- 05:37 PM EST     Sunset
Wed -- 07:58 PM EST     0.59 knots Max Flood
Wed -- 10:32 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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-1-1.2-1.1-0.7-0.30.20.60.910.90.60-0.5-0.9-0.9-0.8-0.5-0.10.30.50.60.50.2-0.2

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 Key West, FL (12,3,4,5)
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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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