05/29/2026
2026-05-29: A central Atlantic tropical wave has its axis along 45W from 02N to 16N, moving westward at 15 to 20 kt. Scattered moderate convection is west of the wave from 04N to 07N between 46W and 48W. Scattered showers and thunderstorms are near the southern part of the wave.
Another central Atlantic tropical wave has its axis near 60W south of 14N to inland South America. It is moving westward at 10 to 15 kt. Isolated showers are near the wave axis over water while scattered moderate to isolated strong convection is noted over South America on either side of the wave axis.
The previous southwestern Caribbean tropical wave has moved inland Central America, with its axis near 85W south of 15N to the eastern Pacific Ocean near 06N. It is moving westward near 10 kt. This wave has become more embedded in southeasterly mid-level flow that is across the northwestern Caribbean as well as with the monsoonal flow that is over the eastern Pacific. Deep convection attributed to this wave is occurring over the Pacific waters to the south of Costa Rica and northern Panama. In addition to that convection, there is numerous strong convection active over eastern Nicaragua and eastern Honduras. Scattered showers and thunderstorms are east of the wave over the southwestern Caribbean south of 13N and west of 77W to inland Costa Rica and Panama. MONSOON TROUGH/ITCZ
The monsoon trough axis enters the Atlantic near 16N17W, then curves south then southwestward to near 06N23W, where it transitions to the ITCZ to 06N30W to 06N35W and to near 07N45W. Scattered moderate convection is within 180 nm south of the ITCZ between 39W-43W and within 60 nm north of the ITCZ between 36W-40W.
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