marine weather discussion NWS National Hurricane Center Miami FL 317 am EDT Sat may 26 2018
Marine weather discussion for the Gulf of Mexico, Caribbean Sea, and tropical North Atlantic from 07n to 19n between 55w and 64w and the southwest North Atlantic including the Bahamas
...Gulf of Mexico...
Subtropical storm Alberto near 19.1n 85.7w 1006 mb at 2 am EDT moving E at 3 kt. Maximum sustained winds 35 kt gusts 45 kt. Alberto will move to 20.7n 85.4w around sunrise this morning, moving into the Gulf of Mexico near 22.9n 85.1w this evening, 25.4n 85.4w Sun morning, 27.0n 86.3w sun evening, and 29.5n 87.5w Mon evening. Alberto will move inland over 32.5n 88.0w late Tue, and to 36.5n 85.5w Wed.
The current forecast keeps any significant impacts related to Alberto E of 90w, with the waters W of 90w fairly tranquil. Ridging extending from the Atlantic looks to build in across the basin in the wake of Alberto. Conditions will improve E of 90w once Alberto exits. Looking ahead, model guidance indicates a strong trough moving NW into the basin by late Wed through the end of the week, with associated increasing winds and seas due to the tight gradient between the ridging and trough.
...Caribbean Sea and tropical N Atlantic from 07n to 19n between 55w and 64w...
Subtropical storm Alberto near 19.1n 85.7w 1006 mb at 2 am EDT moving E at 3 kt. Maximum sustained winds 35 kt gusts 45 kt. Alberto will move to 20.7n 85.4w around sunrise this morning, moving into the Gulf of Mexico near 22.9n 85.1w this evening, with winds and seas decreasing over the western Caribbean thereafter.
Elsewhere, high pressure in the central Atlc will maintain fresh to strong trade winds in the central Caribbean through early next week with strongest winds along the coast of Colombia and in the Gulf of Venezuela. The pressure gradient will weaken in the central Caribbean by mid-week, but will strengthen in the NW Caribbean as a strong trough shifts NW toward the Gulf of Mexico.
...SW N Atlantic including the Bahamas...
Moderate to fresh tradewinds are expected S of 25n through Mon, pulsing to fresh to strong offshore of northern Hispaniola during the afternoon through evening hours each day. Se to S winds will increase to fresh to locally strong W of 77w Sat night through Sun night as the pressure gradient tightens between subtropical storm Alberto in the Gulf of Mexico and high pressure over the area. Those conditions should improve by Tue as the pres gradient slackens.
Looking ahead, model guidance shows low pressure and an associated cold front dropping into the NE portion of the SW N Atlc by mid-week, slowly dropping S-se through the end of the week.
.Warnings...Any changes impacting coastal NWS offices will be coordinated through AWIPS ii collaboration chat, or by telephone:
.Gulf of Mexico... .gmz013...N central Gulf including Flower Garden banks marine Sanctuary... Tropical Storm Warning Sun night. .Gmz015...NE Gulf N of 25n E of 87w... Tropical Storm Warning Sat night into Sun night. .Gmz021...E Gulf from 22n to 25n E of 87w including Straits of Florida... Tropical Storm Warning Sat into sun.
.Caribbean Sea and tropical N Atlantic from 07n to 19n between 55w and 64w... .Amz011...Caribbean N of 18n W of 85w including Yucatan basin... Tropical Storm Warning tonight into Sat. .Amz013...Caribbean N of 18n between 76w and 85w including Cayman basin... Tropical Storm Warning tonight into Sat.
.SW N Atlantic including the Bahamas... None.
*For detailed zone descriptions, please visit: http://www.NHC.NOAA.Gov/abouttafbprod.Shtml#owf
Note: gridded marine forecasts are available in the National digital forecast database (ndfd) at: http://www.NHC.NOAA.Gov/marine/grids.Php
For additional information, please visit: http://www.NHC.NOAA.Gov/marine
.Forecaster lewitsky. National Hurricane Center.