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Marine Weather and Tides
Version 3.4 |
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 6:56AM | Sunset 5:33PM | Wednesday December 11, 2019 11:06 AM EST (16:06 UTC) | Moonrise 5:22PM | Moonset 6:15AM | Illumination 100% |  |
GMZ031 Florida Bay Including Barnes Sound, Blackwater Sound, And Buttonwood Sound- 1016 Am Est Wed Dec 11 2019
This afternoon..East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.
Tonight..Northeast to east winds near 10 knots, increasing to near 15 knots. Bay waters a light chop, becoming a moderate chop. Scattered showers developing.
Thursday..Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Bay waters a moderate chop, becoming a light to moderate chop. Isolated showers.
Thursday night..East winds near 15 knots. Bay waters a moderate chop. Isolated showers.
Friday..Southeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Bay waters a light to moderate chop, becoming smooth to a light chop. Isolated showers.
Friday night..Southeast to south winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers.
Saturday..Southwest to west winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.
Saturday night..Northwest to north winds near 5 knots. Bay waters smooth. Isolated showers.
Sunday..Northeast to east winds near 10 knots. Bay waters a light chop.
Sunday night..Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop.
This afternoon..East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.
Tonight..Northeast to east winds near 10 knots, increasing to near 15 knots. Bay waters a light chop, becoming a moderate chop. Scattered showers developing.
Thursday..Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Bay waters a moderate chop, becoming a light to moderate chop. Isolated showers.
Thursday night..East winds near 15 knots. Bay waters a moderate chop. Isolated showers.
Friday..Southeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Bay waters a light to moderate chop, becoming smooth to a light chop. Isolated showers.
Friday night..Southeast to south winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers.
Saturday..Southwest to west winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.
Saturday night..Northwest to north winds near 5 knots. Bay waters smooth. Isolated showers.
Sunday..Northeast to east winds near 10 knots. Bay waters a light chop.
Sunday night..Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop.
7 Day Forecast for Marine Location Near Layton, FL
Hourly EDIT Helplocation: 24.8, -80.65 debug
Area Discussion for - Key West, FL
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS62 KKEY 111029 AFDKEY
Area Forecast Discussion National Weather Service Key West FL 529 AM EST Wed Dec 11 2019
DISCUSSION. CURRENTLY. Under variably cloudy skies and light east to southeast winds, temperatures are holding in the mid 70s along the island chain. Meanwhile, local radars are detecting widely scattered showers, with the majority of the cells on the nearshore and offshore waters from American Shoal Light to Twenty-Eight Foot Shoal Light. On our marine district, winds are mainly east to southeast ranging from 3 knots at Pulaski Shoal Light to 14 knots at Alligator Reef Light.
SHORT TERM. (Today through Friday night) A western Atlantic ridge extending near our region today will retreat eastward, as a shallow cold front/trough drops southward and to along the north coast of the island of Cuba by Thursday morning. With that, low level speed convergence and increasing moisture flux will prompt chance pops for later tonight. Otherwise, with the nearby boundary lifting northward, limited moisture confined to near 850 mb will result in only isolated pops for the balance of this period.
LONG TERM. (Saturday through Tuesday) Medium range guidance is pretty similar with a subtle trough being bridged by high pressure on Saturday, with the high pressure system over the Southeast United States slipping into the western Atlantic Ocean by Sunday. Thereafter, a western Atlantic ridge axis will sag down the Sunshine State and near our region early next week. Given limited moisture and weak low level flow, nickle to 20 percent pops will be kept through this period. High temperatures will average near 80 degrees with overnight lows in the lower 70s.
MARINE. Gentle to moderate east winds early this morning will slacken into the light to gentle range this afternoon. For tonight, a shallow cold front/trough will drop southward and cross our marine district after midnight. In wake of this boundary, the areal coverage and extent of the increasing winds is still uncertain due to the relatively cool Gulf and Bay waters and possible higher than expected low level cold air advection. However, 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 both island terminals through 12/06z, though vicinity showers could cause brief MVFR to IFR conditions mainly this morning and late tonight. Outside of low coverage showers, skies to remain scattered. Winds will be east to southeast today, turning northeast this evening. While winds are anticipated to remain below 10 knots, after 12/06z freshening is expected as a cold front approaches (and a possible short period of MVFR cigs).
CLIMATE. In 1934, the daily record low temperature of 50 degrees was recorded in Key West. Temperature records date back to 1872.
PRELIMINARY POINT TEMPS/POPS. Key West 83 75 82 74 / 20 20 20 10 Marathon 85 75 83 75 / 20 20 20 10
KEY WATCHES/WARNINGS/ADVISORIES. FL . None. GM . None.
Public/Marine/Fire . APA Aviation/Nowcasts . WLC Data Collection . 99
Visit us on the web at weather.gov/key
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Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for Vaca Key, FL
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | SE G14 | SE G11 | SE G12 | SE G13 | SE G11 | SE G11 | SE G10 | SE G7 | SE G9 | SE G10 | SE G9 | SE G10 | SE G9 | SE G9 | SE G11 | SE G11 | SE G9 | SE G8 | SE | SE | SE G7 | SE G7 | SE G10 | SE G8 |
| 1 day ago | SE G12 | E G11 | E G15 | E G13 | E G13 | E G15 | E G13 | E G10 | E G9 | E G9 | E G11 | E G10 | E G11 | E G12 | E G10 | SE G10 | SE G11 | SE G10 | SE G11 | SE G10 | SE G10 | SE G11 | SE G14 | SE G14 |
| 2 days ago | NE | NE G9 | NE | E G12 | E G13 | E G15 | E G12 | E G10 | E | E G11 | E G12 | E G8 | E G9 | E G11 | E G8 | SE G9 | SE G9 | E G8 | E | E | E | E G10 | SE G12 | E G12 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| The Florida Keys - Marathon International Airport, FL | 22 mi | 73 min | SE 5 | 10.00 mi | Fair | 84°F | 75°F | 74% | 1021.6 hPa |
Link to 5 minute data for KMTH
Wind History from MTH (wind in knots)
| 12 PM | 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 | |
| Last 24hr | SE | SE | SE | SE | SE | SE | SE | E | E | SE | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | |
| 1 day ago | E | E G16 | E | E G16 | E G16 | E | E | E | E | E | E | E | E | E | E | E | E | SE | SE | SE | SE | SE | SE | SE |
| 2 days ago | NE | NE | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E |
Tide / Current Tables for Alligator Reef, Hawk Channel, Florida
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for Long Key, east of drawbridge, Florida Current
EDIT (on/off) Help One Week of DataLong Key
Click for Map
Wed -- 01:33 AM EST -1.59 knots Max Ebb
Wed -- 04:53 AM EST 0.00 knots Slack
Wed -- 06:15 AM EST Moonset
Wed -- 06:57 AM EST Sunrise
Wed -- 08:03 AM EST 1.54 knots Max Flood
Wed -- 11:33 AM EST -0.00 knots Slack
Wed -- 02:15 PM EST -1.27 knots Max Ebb
Wed -- 05:22 PM EST Moonrise
Wed -- 05:26 PM EST 0.00 knots Slack
Wed -- 05:35 PM EST Sunset
Wed -- 08:00 PM EST 1.00 knots Max Flood
Wed -- 10:56 PM EST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 01:33 AM EST -1.59 knots Max Ebb
Wed -- 04:53 AM EST 0.00 knots Slack
Wed -- 06:15 AM EST Moonset
Wed -- 06:57 AM EST Sunrise
Wed -- 08:03 AM EST 1.54 knots Max Flood
Wed -- 11:33 AM EST -0.00 knots Slack
Wed -- 02:15 PM EST -1.27 knots Max Ebb
Wed -- 05:22 PM EST Moonrise
Wed -- 05:26 PM EST 0.00 knots Slack
Wed -- 05:35 PM EST Sunset
Wed -- 08:00 PM EST 1.00 knots Max Flood
Wed -- 10:56 PM EST -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| -1.1 | -1.5 | -1.6 | -1.2 | -0.7 | 0.1 | 0.8 | 1.4 | 1.5 | 1.4 | 1.1 | 0.4 | -0.3 | -1 | -1.3 | -1.2 | -0.8 | -0.3 | 0.3 | 0.8 | 1 | 0.9 | 0.5 | -0 |
Weather Map
(on/off) Help Weather Map
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 (11,2,3,4)
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Ground Weather Radar Station Miami, FL
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Gulf Stream Current
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