000 AXNT20 KNHC 022342 TWDAT Tropical Weather Discussion NWS National Hurricane Center Miami FL 0005 UTC Mon Oct 3 2022 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 1800 UTC surface analysis and satellite imagery through 2350 UTC. ...TROPICAL WAVES... A tropical wave extends along 30W/31W, from 03N to 14N, moving W slowly at 5 kt. Scattered showers are from 04N to 13N between 22W and 38W. Environmental conditions are forecast to be favorable for some gradual development, and a tropical depression is likely to form around the middle part of this week. The system is forecast to move westward, then turn northwestward or northward by the end of the week over the eastern tropical Atlantic. It has a low chance of tropical cyclone development through 48 hours and a high chance through the next 5 days. For the latest information, please read the Tropical Weather Outlook at hurricanes.gov. A tropical wave extends along 47W, from 04N to 16N, moving W at 10-15 kt. Scattered moderate convection is from 07N to 16N between 41W and 58W. Some gradual development of the wave is possible during the next few days while it moves generally westward at 15 to 20 mph, reaching the Windward Islands and the eastern Caribbean Sea by midweek. This disturbance has a low chance of tropical cyclone development through 48 hours and within the next 5 days. For the latest information, please read the Tropical Weather Outlook at hurricanes.gov. ...MONSOON TROUGH/ITCZ... The monsoon trough reaches the coast of Africa through the coast of Senegal near 12N17W and continues southwestward to 07N31W and 07N38W. The ITCZ extends from 07N38W to 08N46W and then from 09N49W to 09N58W. For convection details, see the tropical waves section above. GULF OF MEXICO... A dry continental airmass continues to advance across the Gulf of Mexico, maintaining favorable marine conditions. Light to locally moderate northerly winds and seas of 1-3 ft prevail. For the forecast, a surface ridge will continue to dominate the Gulf waters through the middle of the week producing gentle to moderate NE to E winds and slight seas. A cold front could briefly reach the NE waters tonight into Mon. CARIBBEAN SEA... A surface trough extending from eastern Cuba to a low in the Nicaragua offshore waters to the northern Panama offshore waters along with divergent flow aloft continue to support scattered showers and tstms in the Windward Passage, Jamaica adjacent waters and the SW Caribben W of 75W. Isolated showers are occuring in the SE basin. The Bermuda High against lower pressure associated with the E Pacific monsoon trough continue to support moderate to fresh winds in the south-central and SE basin where seas are in the 3-4 ft range. Moderate northerly winds are behind the surface trough mainly in the eastern Honduras and Nicaragua offshore waters. Light to gentle variable winds and seas in the 1-3 ft range are elsewhere. For the forecast, a surface trough is forecast to persist over the west-central Caribbean through at least Tue. A tropical wave is located several hundred miles east of the Windward Islands. It axis is now near 47W. Some gradual development of the wave is possible during the next few days while it moves generally westward at 15 kt, reaching the Windward Islands and the eastern Caribbean Sea by midweek. Elsewhere, gentle to moderate trades and slight to moderate seas are expected across the basin. ATLANTIC OCEAN... Refer to the section above for details on the tropical waves moving across the basin. A stationary front extends from 31N74W to the NW Bahamas to just off SE Florida near 24N81W. Scattered showers are affecting the waters N of 25N and between the front and 69W. Fresh to strong southerly winds are found N of 25N and between the front and 70W, while moderate to fresh southerly winds are noted N of 25N, between 70W and 58W. Seas of 4-7 ft are occurring N of 25N and between the front and 58W. The remainder of the western Atlantic W of 55W is observing moderate or weaker winds and seas of 2-4 ft. Low-level convergence is generating a few showers from 21N to 26N and between 62W and 66W. The rest of the tropical Atlantic is dominated by an expansive ridge positioned over the central Atlantic, maintaining tranquil weather conditions. Fresh to locally strong SW winds are seen on satellite-derived wind data south of the monsoon trough, between 19W and 32W. Seas in these waters are 4-5 ft. Outside of the deep tropics, light to gentle winds and seas of 2-5 ft prevail. For the forecast west of 55W, a stationary front extends east of Florida from 31N74W to the NW Bahamas. This front will be reinforced by a cold front moving off of the coast of NE Florida today. The combined frontal boundary will continue moving east across the western Atlantic reaching from 31N70W to the central Bahamas on Mon, and from 31N66W to the SE Bahamas on Tue. At the same time, another cold front will move off NE Florida Mon night into Tue followed by moderate to fresh winds and building seas. $$ Ramos