000 AXNT20 KNHC 130427 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0605 UTC Fri Dec 13 2024 Tropical Weather Discussion for North America, Central America Gulf of Mexico, Caribbean Sea, northern sections of South America, and Atlantic Ocean to the African coast from the Equator to 31N. The following information is based on satellite imagery, weather observations, radar and meteorological analysis. Based on 0000 UTC surface analysis and satellite imagery through 0425 UTC. ...SPECIAL FEATURES: The OUTLOOK section for the METEO-FRANCE marine forecast consists of the threat of cyclonic near gale or gale in the marine zone IRVING. The OUTLOOK period covers the next 24 hours after the initial 36-hour forecast period. Please, refer to the website: https://wwmiws.wmo.int, for details. ...MONSOON TROUGH/ITCZ... The monsoon trough enters the Atlantic near 07N11W and extends southwestward to 03N15W. The ITCZ continues from 03N15W to 04N48W. Scattered moderate convection is occurring from 02N to 07N between 20W and 43W. ...GULF OF MEXICO... A 1033 mb high prevails over the Deep South in the United States and a stationary front extends from central Cuba through northern Honduras. The pressure gradient between these features supports fresh to strong NE winds over the eastern Gulf of Mexico and through the Florida Straits, mainly for areas east of 89W and south of 28N. Rough seas of 8 to 11 ft accompany these winds. Elsewhere, moderate to locally fresh E to SE winds and seas of 3 to 6 ft are occurring across northern and western portions of the Gulf. Residual rough seas to 8 ft remain in the southern Bay of Campeche. Otherwise, light to gentle winds are noted in the far southwestern Gulf. For the forecast, a strong high pressure and associated ridge will dominate the Gulf of Mexico waters, supporting fresh to strong NE winds and rough seas in the SE Gulf through Sun night. Afterward, moderate to fresh E-SE winds across the remainder basin will further diminish to gentle to moderate speeds by Tue. ...CARIBBEAN SEA... A stationary front is analyzed from central Cuba southwestward through northern Honduras. Fresh to locally strong NE winds are noted in the vicinity of the front across much of the northwestern Caribbean, as well as through the Windward Passage and downwind of Hispaniola. This pressure gradient also supports moderate to locally fresh NE winds across the central and southwestern Caribbean, with locally strong winds occurring offshore of Colombia. Gentle to locally moderate NE winds prevail in the eastern Caribbean. Rough seas of 8 to 11 ft prevail through the Yucatan Channel and into the northwestern basin, as well as offshore of Colombia and eastern Panama. For the forecast, a stationary front extending from central Cuba to the Gulf of Honduras will dissipate late tonight into Fri. A strong ridge building over the Gulf of Mexico and shifting to the SW N Atlantic waters will sustain fresh to strong NE winds and moderate to rough seas in the NW Caribbean and the Windward Passage through Sun morning. Afterward, moderate to fresh NE winds will further diminish to gentle to moderate speeds by Mon afternoon as the broad high pressure shift NE and then eastward to the north-central Atlantic waters. The high pressure will also support fresh to strong NE winds over the central and SW Caribbean through Sat morning. Moderate to fresh NE winds over the E Caribbean will diminish on Fri as a surface trough enters the region. ...ATLANTIC OCEAN... A stationary front extends from 31N69W through the central Bahamas, and continues southwestward into the northwestern Caribbean. Fresh to strong N to NE winds are occurring along and behind this front, generally west of 71W through the Bahamas and the Florida Straits. Rough seas of 8 to 11 ft prevail in the region of fresh to strong winds. Elsewhere, a trough extends from 27N52W to 15N55W, and a 1040 mb is centered north of the area near 45N39W. The strengthening pressure gradient between these features is supporting fresh to strong NE to E winds generally north of 22N between 42W and 63W. Rough seas are noted across all of the aforementioned areas surrounding the trough, with peak seas of 13 to 17 ft occurring north of 24N between 52W and 59W. Numerous moderate to scattered strong convection is depicted from 14.5N to 27N between 48W and 56W in association to the aforementioned trough. South of 20N, moderate to fresh trades and seas of 6 to 9 ft prevail. Elsewhere, moderate to locally fresh NE winds prevail, except for gentle winds north of 22N and east of 35W. For the forecast W of 55W, a stationary front extending from 31N68W to the central Bahamas and into central Cuba will dissipate tonight into Fri. Fresh to strong northerly winds and rough seas affecting the central and southern Florida offshore waters, and the northern and central Bahamas will prevail and expand in areal coverage through the weekend as strong high pressure building in the wake of the front will tighten the pressure gradient against an approaching surface trough from the east. Frequent gust to gale force winds are likely over the northern Bahamas offshore waters Sat through Sun. Winds will start to gradually weaken across the region Sun night into Mon. $$ KRV
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Page last modified: Friday, 13-Dec-2024 04:27:20 UTC