|
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 7:29AM | Sunset 6:48PM | Tuesday October 22, 2019 8:07 PM EDT (00:07 UTC) | Moonrise 12:16AM | Moonset 2:22PM | Illumination 31% |  |
AMZ454 Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 449 Pm Edt Tue Oct 22 2019
.small craft should exercise caution...
Tonight..Northwest winds increasing to 15 to 20 knots. Seas building to 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters becoming choppy. A chance of showers and a slight chance of Thunderstorms during the early evening.
Wednesday..North winds 15 to 20 knots, becoming northeast during the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop.
Wednesday night..East northeast winds 15 knots. Seas 3 to 4 feet. Dominant period 5 seconds. Inland waters a moderate chop. A chance of showers.
Thursday..East northeast winds 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Thursday night and Friday..East winds 10 to 15 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Friday night..East winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely and a slight chance of Thunderstorms.
Saturday through Sunday..Southeast winds 10 knots. Seas 3 to 4 feet. Showers likely and a slight chance of Thunderstorms.
.small craft should exercise caution...
Tonight..Northwest winds increasing to 15 to 20 knots. Seas building to 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters becoming choppy. A chance of showers and a slight chance of Thunderstorms during the early evening.
Wednesday..North winds 15 to 20 knots, becoming northeast during the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop.
Wednesday night..East northeast winds 15 knots. Seas 3 to 4 feet. Dominant period 5 seconds. Inland waters a moderate chop. A chance of showers.
Thursday..East northeast winds 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Thursday night and Friday..East winds 10 to 15 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Friday night..East winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely and a slight chance of Thunderstorms.
Saturday through Sunday..Southeast winds 10 knots. Seas 3 to 4 feet. Showers likely and a slight chance of Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 449 Pm Edt Tue Oct 22 2019
Synopsis.. A cold front will cross our local waters early this evening, followed by an abrupt increase in northwesterly winds towards midnight that will produce a short period of small craft advisory conditions for most of our waters overnight through the early morning hours on Wednesday. High pressure will then shift northeastward into the carolinas by Wednesday evening, resulting in weak coastal trough formation over our near shore waters with increasing chances for showers and a few Thunderstorms. Strong high pressure will shift off the mid-atlantic coast on Friday as low pressure develops over the western gulf of mexico and moves northward through the lower and middle mississippi valleys on Saturday. This weather pattern will keep onshore winds in place on Friday and Saturday with widespread showers and a few Thunderstorms possible.
Gulf stream.. The approximate location of the west wall of the gulf stream as of oct 19, 2019 at 1200 utc... 47 nautical miles east of flagler beach. 49 nautical miles east of saint augustine beach. 57 nautical miles east of jacksonville beach. 85 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.
Synopsis.. A cold front will cross our local waters early this evening, followed by an abrupt increase in northwesterly winds towards midnight that will produce a short period of small craft advisory conditions for most of our waters overnight through the early morning hours on Wednesday. High pressure will then shift northeastward into the carolinas by Wednesday evening, resulting in weak coastal trough formation over our near shore waters with increasing chances for showers and a few Thunderstorms. Strong high pressure will shift off the mid-atlantic coast on Friday as low pressure develops over the western gulf of mexico and moves northward through the lower and middle mississippi valleys on Saturday. This weather pattern will keep onshore winds in place on Friday and Saturday with widespread showers and a few Thunderstorms possible.
Gulf stream.. The approximate location of the west wall of the gulf stream as of oct 19, 2019 at 1200 utc... 47 nautical miles east of flagler beach. 49 nautical miles east of saint augustine beach. 57 nautical miles east of jacksonville beach. 85 nautical miles east of st simons island. This data courtesy of the naval oceanographic office.
7 Day Forecast for Marine Location Near St. Augustine South CDP, FL
Hourly EDIT Helplocation: 29.87, -81.31 debug
Area Discussion for - Jacksonville, FL
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kjax 222345 afdjax area forecast discussion national weather service jacksonville fl 745 pm edt Tue oct 22 2019 Aviation [through 00z Thursday] vfr conditions prevail through the period for all TAF sites. Scattered cirrus lingers tonight from behind the frontal passage. Skies clear tomorrow as high pressure builds in. Winds shift from west-northwesterly flow tonight to northeasterly tomorrow. Gusty winds form along the coast leading to gusts up to 20 knots at sgj. Prev discussion [602 pm edt] Brief shot of cool and dry air overspreads our area tonight and Wednesday... Extended period of warm and humid weather from Thursday through the weekend... Near term [through Wednesday] A much cooler and drier air mass will arrive on the heels of a refreshing northwesterly breeze overnight, with the front moving offshore before midnight. Strong southwesterly flow aloft will keep a few thin cirrus clouds overhead overnight. Winds will shift to northerly towards sunrise, and breezy conditions will develop during the predawn hours at coastal locations. Lows tonight will fall to the upper 40s for locations north and west of waycross, with 50-55 expected elsewhere inland, ranging to near 60 at coastal locations. High pressure will then shift northeastward on Wednesday, resulting in low level flow quickly veering to northeasterly by the afternoon hours, which will shut off cool air advection. A very dry air mass will remain in place inland, and cirrus cloud cover may increase from southwest to northeast during the afternoon hours as strong ridging aloft to the southeast of our area keeps a strong southwesterly flow in place aloft. Highs should remain just below late october climatology, with mid 70s expected at most locations, ranging to the upper 70s in north central florida. Short term [Wednesday night through Friday night] Ridging aloft will remain in place over the florida peninsula and the bahamas as a potent shortwave trough dives southward down the spine of the rockies and pivots eastward along the red river valley of northern texas by Friday night. This pattern will result in a strengthening surface ridge over the carolinas shifting offshore of the mid-atlantic states, which creates a coastal trough over our near shore waters by late Wednesday night and Thursday. Onshore winds will quickly modify our air mass on Wednesday evening, and strengthening isentropic lift associated with the developing coastal trough could even drive an isolated shower or two onshore along the i-95 corridor in coastal flagler and st. Johns counties by sunrise on Thursday. Decoupling winds and thin cirrus over inland southeast georgia should allow lows to fall to the lower 50s, with 50s elsewhere inland and near 60 over inland north central florida. A light onshore breeze will keep the coast much warmer, with lower 60s for coastal southeast georgia and mid to upper 60s for coastal northeast florida, where multilayered cloud cover will be increasing after midnight. Cloud cover will continue to increase from south to north on Thursday as the coastal trough remains in place over the near shore atlantic waters adjacent to northeast florida and deep southwesterly flow prevails aloft. Scattered showers and possibly an embedded elevated thunderstorm are expected to develop over north central and coastal northeast florida, with dry conditions expected elsewhere. Rising heights aloft should counter increasing cloud cover, and highs will generally climb to the upper 70s to lower 80s. Deep-layered moisture will then increase from south to north on Thursday night and Friday as southwesterly flow aloft prevails and a low level veering wind profile develops, pushing pwat values up to the 1.6-1.8 inch range by late Friday. The coastal trough will move onshore and will lift northward as a pseudo warm front, with isentropic lift possibly developing a few showers overnight at inland locations and chances for isolated convection continuing at coastal locations. Plenty of cloud cover and warm air advection |
will keep inland lows in the 60s on Thursday night, ranging to the lower 70s along the northeast florida coast. Scattered convection will be possible area-wide on Friday, with numerous showers expected to develop over north central and coastal northeast florida by the afternoon hours. Highs will generally climb to 80-85 at most locations, except upper 70s for coastal southeast georgia. Warm and humid weather will continue Friday night as low pressure moves onshore over coastal louisiana and strengthens overnight over the lower mississippi valley. Periods of isentropic lift north of a warm front over the florida peninsula will keep at least isolated to widely scattered shower chances in place over our area Friday night, with lows in the 60s inland and around 70 at coastal locations. Long term [Saturday through Monday night] Deep ridging aloft will remain in place over the bahamas and the florida peninsula. This will direct a potent shortwave trough from the red river valley of northern texas on Friday night quickly northeastward towards the eastern great lakes region by Sunday, keeping a warm and humid air mass in place through early next week locally. Weak shortwave troughs embedded within a persistent and deep southwesterly flow pattern aloft will result in periods of scattered convection over our region. Highs will generally climb to the low to mid 80s, with lows in the 60s inland and the lower 70s at coastal locations. Marine A cold front will cross our local waters early this evening, followed by an abrupt increase in northwesterly winds towards midnight that will produce a short period of small craft advisory conditions for most of our waters overnight through the early morning hours on Wednesday. Seas will build to 3-5 feet near shore and 4-6 feet offshore. High pressure will then shift northeastward into the carolinas by Wednesday evening, resulting in weak coastal trough formation over our near shore waters with increasing chances for showers and a few thunderstorms. Strong high pressure will shift off the mid-atlantic coast on Friday as low pressure develops over the western gulf of mexico and moves northward through the lower and middle mississippi valleys on Saturday. This weather pattern will keep onshore winds in place on Friday and Saturday with widespread showers and a few thunderstorms possible. Winds and seas should remain at caution levels offshore through at least Thursday night, with 3-5 feet expected near shore. Fire weather A cold front moving through our area overnight will result in strengthening northwesterly transport winds that will shift to northerly towards sunrise. This will usher in a much drier air mass to our region on Wednesday, with minimum relative humidity values falling to near 25 percent during the afternoon hours throughout southeast georgia and near 30 percent for inland northeast and north central florida. Surface and transport winds will shift to northeasterly during the afternoon hours, with decreasing speeds at inland locations precluding red flag conditions. Breezy conditions will prevail at coastal locations, where humidity values will remain well above critical thresholds. Preliminary point temps pops Amg 48 74 49 76 62 0 0 0 10 20 ssi 58 73 62 76 69 10 0 10 20 20 jax 53 76 59 79 68 20 0 10 20 20 sgj 63 75 67 79 72 30 0 30 40 40 gnv 56 77 60 82 68 20 0 20 20 10 ocf 59 78 62 84 69 10 0 20 40 10 Jax watches warnings advisories Fl... None. Ga... None. Am... Small craft advisory from 2 am to 10 am edt Wednesday for coastal waters from altamaha sound to fernandina beach fl out 20 nm-coastal waters from fernandina beach to st. Augustine fl out 20 nm-waters from altamaha sound ga to fernandina beach fl from 20 to 60 nm-waters from fernandina beach to st. Augustine fl from 20 to 60 nm-waters from st. Augustine to flagler beach fl from 20 to 60 nm. |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| SAUF1 - St. Augustine, FL | 3 mi | 68 min | W 7 G 8 | 80°F | 80°F | 1014.4 hPa (+1.6) | ||
| 41117 | 15 mi | 38 min | 80°F | 2 ft | ||||
| GTXF1 - Guana Tolomato Matanzas Reserve, FL | 15 mi | 83 min | WSW 2.9 | 81°F | 1015 hPa | 71°F | ||
| LTJF1 | 36 mi | 50 min | 78°F | 78°F | ||||
| MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL | 37 mi | 50 min | WSW 5.1 G 6 | 77°F | 78°F | 1014.7 hPa | ||
| BLIF1 | 38 mi | 50 min | W 4.1 G 7 | 78°F | 1015.3 hPa | 78°F | ||
| DMSF1 | 38 mi | 50 min | 78°F | |||||
| NFDF1 | 40 mi | 50 min | W 1 G 2.9 | 72°F | 1016.1 hPa |
Wind History for I-295 Bridge, St Johns River, FL
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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 |
| Northeast Florida Regional Airport, FL | 7 mi | 12 min | WSW 3 | 10.00 mi | Fair | 76°F | 73°F | 94% | 1015.1 hPa |
Link to 5 minute data for KSGJ
Wind History from SGJ (wind in knots)
| 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 | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | S | S | S | SW | SW | S | SW | S | SW | SW | SW | SW | SW | SW | SW | SW G14 | SW G20 | W G15 | W | W | W | W | W | |
| 1 day ago | NW | Calm | Calm | Calm | Calm | NW | NW | NW | NW | N | Calm | E | E | E | E | SE | SE | E | E | E | S | SW | S | SW |
| 2 days ago | S | S | S G16 | SW G19 | SW G17 | SW | SW | SW | SW G18 | SW G21 | W G17 | W G18 | W G23 | W G22 | W G21 | W G16 | NW | NW | W G14 | NW | W | W | NW |
Tide / Current Tables for State Road 312, Matanzas River, Florida
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for Crescent Beach, Matanzas River, Florida
EDIT (on/off) Help One Week of DataTide / Current data from XTide NOT FOR NAVIGATION
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 Jacksonville, FL (20,4,5,8)
(on/off) Help
Ground Weather Radar Station Jacksonville, FL
(on/off) Help
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. |