Atlantic Discussion

    
            
  • 
                
				
					
						NHC Atlantic Tropical Weather Discussion
					
				
				
    
					
						by nhcwebmaster@noaa.gov (nhcwebmaster) on August 16, 2018 at 12:05 PM
					
					
    666 
 AXNT20 KNHC 161205
 TWDAT
 Tropical Weather Discussion
 NWS National Hurricane Center Miami FL
 805 AM EDT Thu Aug 16 2018
 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 32N. The following information is based on satellite
 imagery, weather observations, radar and meteorological analysis.
 Based on 0600 UTC surface analysis and satellite imagery through
 1145 UTC.
 ...SPECIAL FEATURES...
 The center of Subtropical Storm Ernesto at 16/0900 UTC is near 
 40.8N 44.1W, or 975 km to the SE of Cape Race in Newfoundland. 
 Ernesto is moving NNE at 11 knots. The estimated minimum central 
 pressure is 1008 mb. The maximum sustained wind speeds are 35 
 knots with gusts to 45 knots. Scattered moderate convection is 
 from 38N to 43N between 40W and 45W. Please read the latest NHC 
 forecast/advisory under AWIPS/WMO headers MIATCPAT5/WTNT35 KNHC 
 for more details.
 ...TROPICAL WAVES...
 A tropical wave is along 21W, from 04N-20N. There is no convection
 associated with this wave at this time.
 A tropical wave is along 48W, from 03N-18N. Scattered moderate
 convection is from 06N-17N between 47W-58W.
 A tropical wave is along 61W, from 09N-21N. There is no convection
 associated with this wave at this time. 
 A tropical wave is along 89W S of 22N. This wave stretches into 
 the eastern Pacific Ocean. There is no convection associated with
 this wave at this time. 
 ...MONSOON TROUGH/ITCZ...
 The monsoon trough extends from the coast of W Africa near 
 12N16W to 08N30W. The ITCZ begins near 08N30W and continues to 
 07N40W to 09N47W then resumes near 08N49W to 07N57W. For
 convection information see the tropical waves section. 
 ...DISCUSSION...
 GULF OF MEXICO...
 An upper level low is centered SE of Louisiana supporting
 isolated rainshowers in the NE Gulf. Middle level diffluent flow
 support scattered showers and tstms in the SE basin.
 A surface ridge that extends westward from the Atlantic Ocean 
 into the northern Gulf of Mexico will continue across the region 
 into early next week. A nocturnal surface trough will move off the
 Yucatan Peninsula into the SW Gulf of Mexico each night, 
 accompanied by a surge of fresh NE to E winds.
 CARIBBEAN SEA...
 An upper level trough extends from an Andros Island cyclonic
 circulation center, to a second cyclonic circulation center that
 is in northern Belize, to the Isthmus of Tehuantepec of southern
 Mexico. Isolated moderate to locally strong rainshowers are in the
 areas of upper level cyclonic wind flow with the trough. 
 The monsoon trough is along 07N/08N from 75W in Colombia beyond
 84W in the eastern Pacific Ocean. Isolated moderate rainshowers
 are from 15N southward from 72W westward, in an area of middle
 level to lower level cyclonic wind flow.
 A surface ridge, that is across the western Atlantic Ocean, will 
 maintain fresh to occasionally strong trade winds in the south 
 central Caribbean Sea into early next week. Gentle to moderate
 trade winds are expected elsewhere.
 ATLANTIC OCEAN...
 An upper level trough passes through 32N44W, in the central
 Atlantic Ocean, to 27N47W, to an Atlantic Ocean cyclonic
 circulation center that is near 22N60W, to a cyclonic circulation
 center that is along the coast of the Dominican Republic near
 19N69W. Upper level cyclonic wind flow spans the Caribbean Sea
 from 15N northward between 60W and the Windward Passage, and it
 spans the Atlantic Ocean within 240 nm on either side of the line
 that passes through 32N44W 27N50W 22N60W, to the northern coast of
 Puerto Rico along 66W/67W. Isolated moderate rainshowers are in
 the area of the upper level cyclonic wind flow. A surface trough
 extends from a 1016 mb low pressure center that is near 33N57W,
 through 30N58W, to 25N64W.
 An upper level trough extends from an Andros Island cyclonic
 circulation center, to a second cyclonic circulation center that
 is in northern Belize, to the Isthmus of Tehuantepec of southern
 Mexico. Isolated moderate to locally strong rainshowers are in the
 areas of upper level cyclonic wind flow with the trough. 
 Surface high pressure will continue across the area through
 Monday.
 For additional information please visit 
 http://www.hurricanes.gov/marine
 $$
 MF/NR […]
    
				
    
			
    •
Top