Thursday, September19, 2019 L-36.com


Marine Weather and Tides
Key West, FL

Version 3.4
NOTICE
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 7:13AMSunset 7:28PM Thursday September 19, 2019 2:43 PM EDT (18:43 UTC) Moonrise 10:08PMMoonset 10:48AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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
    EDIT      (on/off)   Help
GMZ075 Expires:201909192030;;026150 Fzus52 Kkey 191420 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 1020 Am Edt Thu Sep 19 2019 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. Gmz053>055-073>075-192030- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge Out 20 Nm- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal Out 20 Nm- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas Out 20 Nm- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge 20 To 60 Nm Out- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal 20 To 60 Nm Out- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas 20 To 60 Nm Out- 1020 Am Edt Thu Sep 19 2019
.small craft advisory in effect...
This afternoon..Northeast winds near 20 knots. Seas 4 to 7 feet. Scattered showers.
Tonight through Friday night..Northeast to east winds 20 to 25 knots. Seas 5 to 8 feet. Scattered showers and isolated Thunderstorms.
Saturday..Northeast to east winds near 20 knots. Seas 5 to 7 feet. Scattered showers and isolated Thunderstorms.
Saturday night..East winds 20 to 25 knots. Seas 5 to 8 feet. Scattered showers and isolated Thunderstorms.
Sunday and Sunday night..Northeast to east winds near 20 knots. Seas 4 to 7 feet. Scattered showers and isolated Thunderstorms.
Monday..Northeast to east winds 15 to 20 knots. Seas 3 to 6 feet. Scattered showers and isolated Thunderstorms.
Monday night..Northeast to east winds near 15 knots. Seas 3 to 5 feet. Scattered showers and isolated Thunderstorms.


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


Area Discussion for - Key West, FL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kkey 191843
afdkey
area forecast discussion
national weather service key west fl
243 pm edt Thu sep 19 2019

Discussion
Water vapor imagery highlights deep-layer ridging over the gulf of
mexico, just west of a long-wave trough axis which stretches south
through cuba. High pressure centered over the northeast us
stretches southwest to the central gulf of mexico. Fresh to
strong, northeast to east breezes prevail across the coastal
waters of the florida keys. Temperatures are in the mid 80s with
dewpoints near, or just below 70. Skies are mostly sunny and the
kbyx radar is nearly echo free. A mild and breezy late- september
day.

Forecast
The high pressure system will persist over the eastern united
states and the western north atlantic tonight through Sunday.

Meanwhile, a weak inverted trough in the easterlies will lumber to
the west-northwest through the caribbean. Sensible weather through
the next three days will feature brisk northeast to east breezes,
highs in the upper 80s, and increasing rain chances, especially
Friday night through Saturday night. Rain chances will hinge upon
the battle for real estate by the northern fringes of the inverted
trough's moisture axis, and the confluent modified-continental
airmass racing southwest along the southern flank of the high.

Multi-day QPF totals indicate a sharp north-south gradient across
the island chain. We have tempered the MOS consensus to 50% Friday
night through Saturday night based on the uncertainty in the
northern progress of the tropical moisture plume. Breezes will
begin to diminish Monday and Monday night as the high pressure
system fractures over florida, with the dominant node forming over
the northern gulf coast. This newly positioned anticyclone will
progress to the east Tuesday through Thursday. We highlight below
normal rain chances through the extended forecast.

Marine
Small craft advisory in effect for all coastal waters of the
florida keys as northeast to east winds surge to 20 to 25 knots.

Small craft advisory conditions are expected to persist through at
least Sunday night, with large seas building across the straits of
florida. From synopsis, high pressure over the southeastern
united states will maintain fresh to strong, northeast to east
breezes tonight through Monday. Breezes will occasionally peak and
lull, especially in the lee of the florida peninsula.

Aviation
Vfr conditions will prevail at both island terminals for the evening
and overnight forecast periods. Northeast winds at 10 to 15 knots
with frequent gusts to around 20 knots are expected through tomorrow
morning. After a brief spell of drier air, another undulation of
moisture is expected late tonight, resulting in a return to vcsh at
both terminals around 12z.

Preliminary point temps pops
Key west 80 88 78 87 30 40 50 50
marathon 80 89 78 88 30 50 50 50

Key watches warnings advisories
Fl... None.

Gm... Small craft advisory for gmz031>035-042>044-052>055-072>075.

Public marine fire... Clr
aviation nowcasts... .Bt
data collection... ... Nb
visit us on the web at weather.Gov key
follow us on facebook and twitter at:


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42095 13 mi44 min 86°F4 ft
SANF1 - Sand Key, FL 15 mi44 min NE 15 G 20 83°F 1011.8 hPa (-1.2)72°F
KYWF1 - 8724580 - Key West, FL 17 mi62 min NE 13 G 17 85°F 89°F1013.3 hPa
PLSF1 - Pulaski Shoal Light, FL 35 mi59 min ENE 18 G 20 83°F 1013.8 hPa (-1.1)
GKYF1 40 mi104 min 87°F

Wind History for Key West, FL
(wind in knots)    EDIT      (on/off)   Help
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
N7
G13
N8
G13
E11
G17
NE6
G9
NE5
E4
NE3
E4
G9
E4
G11
NE9
G17
E6
G14
E6
G15
E8
G15
NE11
G15
E10
G15
NE10
G15
NE10
G18
NE10
G14
E9
G14
NE10
G17
NE4
G15
NE8
G14
NE11
G14
NE11
G18
1 day
ago
N9
N8
N10
N10
N12
G15
N12
G15
N12
G15
N14
N14
G17
N14
G17
N14
G18
N14
G17
N13
G17
N10
G13
N7
G11
NE4
E4
E3
G6
NE8
G12
NE6
G10
NE9
G13
NE8
G13
NE9
G14
NE8
G13
2 days
ago
NE7
NE8
G11
NE8
G11
N9
N9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West International Airport, FL20 mi1.9 hrsNE 10 G 1910.00 miPartly Cloudy85°F70°F61%1013.6 hPa
Key West Naval Air Station, FL23 mi1.9 hrsNE 1310.00 miA Few Clouds87°F70°F57%1013.5 hPa

Link to 5 minute data for KEYW

Wind History from EYW (wind in knots)
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrNE9NE11NE10
G15
N11NE10
G18
NE7N4NE8CalmE6NE9NE10
G18
NE12
G18
NE8
G17
NE10
G16
NE11
G17
NE7
G19
NE12NE13
G20
NE10
G19
NE13
G21
NE10
G18
N11
G18
NE11
G19
1 day agoN8N7N8N9N10--NW8N8N8N9N11N11N11N11N13
G17
N8N7NE5NE5E4NE8NE8NE8NE10
2 days agoW10NW12NW12NW13NW11----NW9--NW8NW9------N6--N8N6N4N5N6--N8NE8

Tide / Current Tables for Sand Key Lighthouse, Sand Key Channel, Florida
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Sand Key Lighthouse
Click for Map
Thu -- 12:15 AM EDT     1.85 feet High Tide
Thu -- 06:49 AM EDT     0.39 feet Low Tide
Thu -- 07:15 AM EDT     Sunrise
Thu -- 11:47 AM EDT     Moonset
Thu -- 01:11 PM EDT     1.45 feet High Tide
Thu -- 06:19 PM EDT     0.77 feet Low Tide
Thu -- 07:27 PM EDT     Sunset
Thu -- 11:07 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.81.81.61.30.90.60.40.40.50.70.91.21.41.41.41.31.10.90.80.80.91.11.41.6

Tide / Current Tables for Boca Grande Channel, Florida Current
   EDIT      (on/off)   Help   One Week of Data
Boca Grande Channel
Click for Map
Thu -- 12:51 AM EDT     -0.00 knots Slack
Thu -- 04:30 AM EDT     -1.19 knots Max Ebb
Thu -- 07:15 AM EDT     Sunrise
Thu -- 07:48 AM EDT     0.00 knots Slack
Thu -- 10:35 AM EDT     1.22 knots Max Flood
Thu -- 11:48 AM EDT     Moonset
Thu -- 02:07 PM EDT     -0.00 knots Slack
Thu -- 05:11 PM EDT     -0.88 knots Max Ebb
Thu -- 07:27 PM EDT     Sunset
Thu -- 08:20 PM EDT     0.00 knots Slack
Thu -- 10:48 PM EDT     0.85 knots Max Flood
Thu -- 11:08 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.4-0.1-0.5-0.9-1.2-1.2-0.9-0.50.10.71.11.20.90.50.1-0.4-0.7-0.9-0.8-0.5-0.20.30.70.8

Weather Map
       (on/off)   Help Weather Map
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 (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Key West, FL
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current


Ad by Google

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.