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Barbados Meteorological Services
Charnocks ChCh
Weather Discussion
http://www.BarbadosWeather.org
Initial to 4 days discussion based on Satellite imagery,BMS Radar composite,S.P.I.E products,GEM, GFS, WW3, UKMET and BMS WRF modeling, surface and upper air observations, Satellite derived products.
DATE: 20170527 PERIOD: Morning

Eastern Caribbean

Tropical Waves
A tropical wave is in the eastern Atlc with axis extending along 24W south of 10N, moving W at 15 kt.

A tropical wave is in the central Atlc with axis extending along 37W south of 10N, moving W at 20 kt.

A tropical wave is in the W Atlc with axis extending along 56W south of 15N, moving W at 20 kt.

The axis surface to low level passed over Barbados last night and is now near 60W south of 15N.
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Partly cloudy to cloudy skies with some showers and periods of rain was observed across Barbados and the island chain as the axis of the surface to low level trough moved across Barbados. Moisture however was restricted to the lower levels of the atmosphere and therefore mainly low level clouds were observed throughout the night.
Windspeeds across the region began to decrease as a result of the aboved mentioned trough. Here in Barbados and across the region windspeeds peaked at 13knots. Sea conditions however remained moderate peaking at 2.0m.
Further south, some sections of the Guianas reported occasionally cloudy skies with some scattered showers.
Western Caribbean

A cold front extending from north western Atlantic across the Bahamas through to the western part of Cuba, generated cloudy to overcast skies, scattered showers and isolated thunderstorms over the Bahamas and some sections of the northern Cuba. A high pressure system dominated the remainder of the Greater Antilles producing mostly fair to partly cloudy skies and a few brief scattered showers at times.
Eastern Caribbean Outlook

Moisture associated with a surface to low level trough presently affecting the region will continue to affect Barbados and the rest of the island chain today. As a result, an increases in moisture levels, cloudy skies and showers are expected. Closely following this trough, is a tropical wave presently at 56W which is expected to increase instability across the area from late Saturday/Sunday. This will produce cloudy to overcast skies, scattered showers, periods of rain and a chance of isolated thunderstorms. This unsettling weather will spread across the entire region by late Sunday/Monday. By Monday night after the passage of the tropical wave a gradual drying out of the atmosphere can be expected across Barbados and the Windwards as the surface to low level high pressure system rebuilds across the chain.

Temporary improvement in horizontal visibility is anticipated across Barbados and the Windwards over the next 2 to 3 days as the Saharan dust moves out from the region. However, by Tuesday after the passage of the tropical wave, some deterioration in horizontal visibility is expected again.
Windspeeds across the region will remain light over the weekend as the trough and tropical wave affects the region. Sea swells are expected to remain moderate in open water with swells peaking at 2.0m.
Western Caribbean Outlook

A stable and dry atmosphere is anticipated over the western Caribbean during the next few days, as the cold front moves away from the Bahamas limiting moisture amounts.
The high pressure system will build over the Florida Panhandle and the far western Caribbean islands over the weekend limiting showers activity. On the other hand, the trough system presently affecting the Eastern Caribbean will begin to move across the Central Caribbean today and continue to affect the region throughout the weekend, activity associated with this feature however is expected to be limited.
Meteorologist Semelka Boyce