IR Satellite

 

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An area of low pressure located over the Central Atlantic Ocean is several hundred miles east of the Northern Leeward Islands and will not be crossing Saint Vincent and the Grenadines, but will continue on a north-westward, and then a northward track over the open Atlantic. A light south-easterly wind flow will develop across Saint Vincent and the Grenadines as the night progress. Tonight, a brief increase in moisture at mid-level is likely to result in a few showers.

A weakened low pressure area is slowly crossing the island chain with limited moisture. Daytime heating and light surface winds could result in isolated showers/thunderstorms during Sunday, but moisture is expected to converge across St. Vincent and the Grenadines (SVG) during Monday and scattered showers are likely by evening into Tuesday. 

Light (less than 10 km/h) and variable winds becoming calm at times should continue this weekend.

Dry mid to upper levels will continue to suppress any significant shower activity across Saint Vincent and the Grenadines during the next 48hours. In addition, a light north-easterly wind regime coupled with day time heating is likely to result in some localized convective activity during the late afternoons.

A few showers associated with a shearline, dipped south of St. Vincent and the Grenadines (SVG) this morning as a weakened low pressure area lingers east of the island chain generating shearlines...Image at 11:20 am below, compliments RAMMB... A few more shallow showers are likely later this afternoon into Saturday morning. Daytime heating coupled with light surface winds, could result in isolated thunderstorm activity Saturday afternoon. 

Tonight, unstable conditions will be affecting the islands as a shearline pushes from the northwest over the Southern Windward Islands. An increase in cloud cover and showers are likely as the night progress into Friday morning across Saint Vincent and the Grenadines. A dry mid-level is likely to suppress shower activity during Friday.

A deep low pressure area east of the island chain is losing its energy, propagating shearlines across the region. Showers are likely across St. Vincent and the Grenadines (SVG) tonight into Thursday morning with isolated thunderstorms, as pockets of moisture cross our area. Scattered showers are likely during Friday and possibly increasing into Saturday morning.  

Gentle to moderate (10 – 25 km/h) north-easterly trades, could occasionally turn north north-easterly and reduce to light, variable winds late Friday

Saint Vincent and the Grenadines will experience a light to gentle wind regime during the next 72 hrs. This light wind regime at lower levels coupled with a brief increase in moisture at mid levels is likely to result in some showers tonight, with a moderate (50%) chance of isolated thunderstorms. A few brief scattered showers are likely on Thursday.

Mid-level moisture could enhance pockets of showers and isolated thunderstorms...Image  below, at 11:50 am compliments RAMMB...across of St. Vincent and the Grenadines (SVG) this afternoon into early Thursday as a tropical wave crosses the area. A low pressure area lingering east of the island chain could deepen under mid-upper level trough, with a shearline dipping across our area bringing scattered showers during Friday.

Unstable conditions will continue to move across Saint Vincent and the Grenadines (SVG) tonight. Lower level moisture will remain elevated but the mid to upper levels have become less favourable for enhancement of shower activities. Tonight, some showers and a slight chance of isolated thunderstorms are forecast across SVG.

A weak low-level shear-line dipping southward across our area, could trigger light to moderate showers with isolated thunderstorms across St. Vincent and the Grenadines (SVG) tonight. A few showers are likely during Monday and an approaching tropical wave, with mid-level moisture support could enhance showers with isolated thunderstorms late Tuesday into Wednesday.

Moderate to fresh (25 – 40 km/h) north-easterly breeze could occasionally decrease to moderate (20 – 30 km/h) and gusty conditions are likely near showers.