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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: 20200407 PERIOD: Evening |
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Eastern Caribbean The surface to mid-level Atlantic high pressure system remained the dominant feature over Barbados and most of the eastern Caribbean today. BMS satellite imagery depicted a few shallow low-level cloud patches and upper-level cirrus clouds traversing the area while BMS radar composite imagery revealed that echoes were largely non-existent. The only exception was over the extreme northern Leeward islands, where the presence of a lingering weak surface to low-level shearline generated occasionally cloudy skies and a few isolated showers. Further south over the Guianas, generally cloudy skies with showers were observed throughout the day while isolated thunderstorms developed across sections of the area by early afternoon. Low-level convergence coupled with a deep pool of moisture and a favourable upper level environment were responsible for these conditions. Winds across the region remained light to moderate peaking near 16 knots while seas were slight to moderate in open water with swells ranging from 1.0m to 2.0m. Additionally, analysis is suggesting that northerly swells are prevailing across the region. |
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Western Caribbean Generally cloudy conditions with some light showers continued to affect most of the Bahamas today due to a surface to low-level confluent pattern over the area. However, BMS satellite imagery revealed a gradual reduction in the cloud mass as the day progressed and the confluent pattern weakened. Further east, a lingering weak surface to low-level shearline continued to generate some cloudiness and showers across the Virgin Islands, Puerto Rico and Hispaniola. Elsewhere, a surface to mid-level high pressure system was dominant. |
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Eastern Caribbean Outlook Tonight: The weak surface to low-level shearline will continue to generate a few isolated showers under occasionally cloudy skies, over the extreme northern Leewards. Meanwhile, Barbados and the rest of the region will experience fair to partly cloudy conditions, as the surface to mid-level Atlantic high pressure system remains the dominant feature. Wednesday: A similar weather pattern will persist across the eastern Caribbean. Thursday: By this time, conditions over the extreme northern Leewards are predcited to improve as the aforementioned surface to low-level shearline migrates slightly northwards. Consequently, the Atlantic high pressure system will dominate condidtions across the entire island chain. This feature along with a relatively dry and stable atmospheric profile will allow for minimal shower activity to be experienced. Friday: The Atlantic high pressure system will maintain its dominance across the eastern Caribbean. Saturday: A similar weather pattern will persist across the eastern Caribbean. Although the Atlantic high pressure system will maintain its presence throughout the forecast period, fluctuations in strength will by extension result in wind speed variations over the next four days. |
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Western Caribbean Outlook Tonight: The confluent pattern will remain albeit in a weakened state and is likely to generate occasional showers across sections of the Bahamas. Meanwhile, the weak shearline feature will continue to linber over the central Caribbean islands. Elsewhere, the surface to mid-level high pressure system will remain dominant. Wednesday: Similar conditions to the previous day are expected to persist. Thursday: The shearline affecting Puerto Rico is predicted to weaken however, occasional showers are still likely. Elsewhere, no significant change is expected across the region. Friday: A southeastward progressing frontal boundary is expected to bring cloudiness and showers to the Bahamas by nightfall. Meanwhile, the surface to mid-level high pressure system will be dominant across the rest region. Saturday: A similar weather pattern will persist as the frontal boundary affects the Bahamas and the high pressure system dominates the rest of the Greater Antilles. |
| Meteorologist Wayne McGeary |