Monday, March25, 2019 L-36.com


Marine Weather and Tides
Big Pine Key, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:24AMSunset 7:41PM Monday March 25, 2019 1:45 AM EDT (05:45 UTC) Moonrise 11:35PMMoonset 9:55AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 1024 Pm Edt Sun Mar 24 2019
.small craft should exercise caution until winds decrease...
Overnight..East winds 15 to 20 knots, becoming northeast to east 10 to 15 knots overnight. Seas 1 to 2 feet. NEarshore waters choppy for the rest of this evening, becoming a light to moderate chop. Isolated showers.
Monday..East winds 10 to 15 knots, becoming northeast to east and decreasing to near 10 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop, becoming a light chop. Isolated showers.
Monday night..North winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop.
Tuesday..Northwest to north winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop.
Tuesday night..Northwest to north winds near 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop. Isolated showers.
Wednesday..Northwest to north winds 15 to 20 knots. Seas 2 to 4 feet. NEarshore waters choppy.
Wednesday night..North to northeast winds 20 to 25 knots. Seas 2 to 5 feet, except 5 to 7 feet west of the marquesas keys. NEarshore waters very rough.
Thursday..Northeast winds 15 to 20 knots. Seas 2 to 5 feet subsiding to 1 to 3 feet in the afternoon. West of the marquesas keys, seas 4 to 6 feet. NEarshore waters choppy.
Thursday night..Northeast winds 15 to 20 knots. Seas 1 to 3 feet, except 3 to 5 feet west of the marquesas keys. NEarshore waters choppy. Isolated showers.
Friday..East winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Isolated showers.
Friday night..East winds 15 to 20 knots. Seas 1 to 2 feet. NEarshore waters choppy. Isolated showers.


7 Day Forecast for Marine Location Near Big Pine Key, FL
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location: 24.73, -81.41     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 250223
afdkey
area forecast discussion
national weather service key west fl
1023 pm edt Sun mar 24 2019

Short term (tonight-Thursday)
satellite imagery nicely shows mid- and high-level clouds slowly
departing off to the east, all in advance of a mid-level trough
axis that is now moving east across the keys. The 00z key sounding
showed a jump of integrated precipitable water up to 1.58", due
to being just inside the northwest edge of the departing mid-level
moisture at balloon launch time. Based on satellite trends, the
mid-level air mass is set to dry out overnight, leaving just low-
level moisture at play for producing any showers. Models still
continue to show a few weak showers developing in low-level
easterly flow overnight and taking aim at the upper keys on Monday
morning.

During the day Monday, low-level flow will become increasingly
northerly, as a surface high pressure ridge slips from north into
central florida. Weakening low-level flow and a little drying from
the north wind will cause shower chances to diminish on Monday
pm.

On Tuesday and Tuesday night, a mid-level trough will develop over
north florida and then move off the atlantic coast. The gfs
ensemble mean shows a negative 500 mb height anomaly bullseye by
wed morning near the coast of east-central florida. Over the
keys, this pattern will turn our flow aloft more northwesterly,
with a cold front sweeping in from the northwest on Tuesday
afternoon. Moisture will be lacking, and the current forecast is
dry. At most, a few weak and fast-moving showers could accompany
the frontal passage. The front will be followed by an increase in
northwest breezes on Tue evening which will bring a few degrees of
cooling, both in temperature and dewpoint.

The upper trough moving off the east coast of florida on Wed will
spin up a mid-latitude low center over the northern bahamas which
will then move east on Thursday as a strong, broad inverted
surface trough. The main impact here will be the development of
breezy north then northeast winds. Wed and Thu should be rain-free
for most of the keys. The closest call with showers should be
over the upper keys, which would be closest to any showers on the
back side of low pressure east of the northern bahamas.

Long term (Friday-Sunday)
fair weather will prevail. Friday could still be breezy as we come
under the southern periphery of strong high pressure over the
southeast states.

Low-level flow will become south of due east next Saturday and
Sunday as high pressure shift further out to sea, which will help
increase low- level moisture. Could be weak isolated shower
activity next weekend, but the prevailing weather will be dry.

Marine
Winds are starting to slowly ease, but they are slowest to ease
over the southeast gulf waters. Will still include a headline
urging small craft to exercise caution until winds decrease
further later tonight.

Northeast breezes will ease further on Monday as a surface high
pressure ridge axis over north florida sinks south down the
peninsula. Close proximity of the ridge axis will weaken
gradients and wind.

Then a weakening cold front will approach the keys waters on
Tuesday, followed by freshening northwest breezes on Tue pm.

Northerly breezes will freshen further as low pressure develop and
strengthens near the northern bahamas on wed, peaking on wed
night. There is strong model consensus that small craft
advisories will be needed by Wed night. As low pressure exits
northeast of the bahamas on thu, high pressure will fill in across
the carolinas and north georgia, leading to a turn to moderate
and fresh easterly breezes on Fri and Fri night.

Aviation
The mid-level air mass should dry overnight, with a corresponding
decrease in higher cloud layers. However, the low levels should
moisten a bit, leading to development of clouds in the 025-040
layer for late tonight and Monday morning. A turn to a light
northerly wind late on Monday afternoon should start to dry out
the low-levels, with a decrease in cloud coverage if not an
outright clearing.

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Haner
aviation nowcasts... .Haner
data collection... ... Dr
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAF1 - 8723970 - Vaca Key, FL 16 mi34 min 75°F 74°F1020.1 hPa
SMKF1 - Sombrero Key, FL 17 mi56 min 76°F 1019.8 hPa (-0.4)64°F
KYWF1 - 8724580 - Key West, FL 24 mi34 min 74°F 75°F1020.1 hPa
SANF1 - Sand Key, FL 31 mi56 min 75°F 1020 hPa (-0.5)66°F
JKYF1 - Johnson Key, FL 35 mi106 min 75°F
LRKF1 - Little Rabbit Key, FL 36 mi106 min 74°F
MUKF1 - Murray Key, FL 36 mi106 min 74°F
PKYF1 - Peterson Key, FL 37 mi106 min 73°F
42095 37 mi46 min 77°F3 ft
BKYF1 41 mi106 min 75°F
WRBF1 - Whipray Basin, FL 43 mi46 min NE 8 75°F
WWEF1 43 mi106 min 74°F
GBTF1 - Garfield Bight, FL 44 mi106 min 74°F
CWAF1 44 mi106 min 74°F
BOBF1 - Bob Allen, FL 44 mi106 min 73°F
SREF1 46 mi106 min 73°F
LRIF1 47 mi106 min 75°F
TBYF1 47 mi106 min 76°F
GBIF1 - Gunboat Island, FL 49 mi106 min 72°F

Wind History for Vaca Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West Naval Air Station, FL18 mi53 minE 810.00 miA Few Clouds75°F66°F76%1020 hPa
The Florida Keys - Marathon International Airport, FL19 mi53 minE 810.00 miFair77°F64°F64%1020.2 hPa
Key West International Airport, FL22 mi53 minE 610.00 miA Few Clouds74°F66°F79%1020.1 hPa

Wind History from NQX (wind in knots)
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Last 24hrNE8NE10NE7NE6NE6NE8NE7E6E13E15E15E15E16E15E14E15E17
G21
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1 day agoNE4NE4NE4NE4NE3NE4E7E10E7NE6NE7N8N8N9N10NE8NE7NE8NE6E12E9E8E7NE6
2 days agoN14NW16NW17
G21
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N15N15N10N14NE13N11N10N13N11N12N12N12N12N9N10N10N7N8N6

Tide / Current Tables for Howe Key, south end, Harbor Channel, Florida
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Howe Key
Click for Map
Mon -- 12:16 AM EDT     -0.24 feet Low Tide
Mon -- 06:45 AM EDT     0.83 feet High Tide
Mon -- 07:24 AM EDT     Sunrise
Mon -- 10:55 AM EDT     Moonset
Mon -- 11:52 AM EDT     0.15 feet Low Tide
Mon -- 06:13 PM EDT     1.25 feet High Tide
Mon -- 07:38 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.2-00.20.50.70.80.80.70.60.40.20.20.20.40.711.21.21.21.10.80.50.2

Tide / Current Tables for No Name Key (northeast of), Florida Current
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No Name Key (northeast of)
Click for Map
Mon -- 12:33 AM EDT     0.85 knots Max Flood
Mon -- 03:32 AM EDT     -0.00 knots Slack
Mon -- 06:07 AM EDT     -0.88 knots Max Ebb
Mon -- 07:24 AM EDT     Sunrise
Mon -- 09:47 AM EDT     0.00 knots Slack
Mon -- 10:55 AM EDT     Moonset
Mon -- 12:37 PM EDT     0.52 knots Max Flood
Mon -- 03:17 PM EDT     -0.00 knots Slack
Mon -- 06:18 PM EDT     -1.04 knots Max Ebb
Mon -- 07:38 PM EDT     Sunset
Mon -- 10:07 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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0.80.80.70.3-0.2-0.7-0.9-0.8-0.6-0.30.10.30.50.50.40.1-0.3-0.8-1-1-0.7-0.4-00.3

Weather Map and Satellite Images
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wmap_A
GOES 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Key West, FL (1,6,7,8)
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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 numerious 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.