Tropical Depression 27W has intensified into Tropical Storm WASHI (1121)… WASHI is slowly strengthening… Satellite appearance of the storm has improved noticeably… Convective bands wraps more than 0.75 on log10 spiral closely into the circulation centre… Upper level outflow remains good… … Continue reading
Tropical Depression 27W has formed southeast of Yap… It’s moving to the west at around 6N 143E… Maximum sustained wind speed around the centre is estimated to be 45 km/h (25 kt)… A region of deep convection has developed over … Continue reading
Tropical Depression 26W over the South China Sea is moving west-southwest near 8N 111E while maintaining its strength… Convection is limited and the circulation centre is exposed… The system should remain weak and continue to approach Malaysia in the coming … Continue reading
Surface observation and satellite analysis suggest that 94W is now a Tropical Depression (26W by PGTW)… Convection has increased but easterly shear is still pushing the convection to the west… There is a poleward outflow channel… and vertical shear is decreasing… Slight … Continue reading
Tropical Disturbance 94W over the South China Sea remains weak… Although the low level circulation centre is well-defined, convection is disorganized and displaced to the south… 94W is expected to move west-southwest in the next couple of days… Significant development … Continue reading
A low level circulation centre (Tropical Disturbance 94W) is observed near 12N 116E… VIS imagery shows it’s partly exposed with major convection located in the northwestern quadrant… Strong northeast monsoon is bringing Gale Force winds to the South China Sea… … Continue reading
A Tropical Disturbance (upgraded to TD 25W by PGTW) is strengthening over the southern part of the South China Sea… ASCAT pass showed 25kt southwesterly winds north of Sabah, Brunei and Sarawak… Convection is sheared to the west… Overall organization … Continue reading
Tropical Disturbance 91W is located near 6N 139E within a monsoon trough… ASCAT pass revealed a weak but defined low level circulation centre… Convection associated with 91W is bringing unsettled weather to the northwestern quadrant of this circulation… 91W is expected to … Continue reading
Over the Mediterranean… the rare TC 01M has moved northwest over the past 24 hours… putting itself closer to the southern coast of France… 01M intensified into a 45kt Tropical Storm earlier today… Since then it has been showing signs of … Continue reading
Storm chasers around the world are now chasing a rare good-looking cyclone located south of France… over the Mediterranean Sea… This is the first storm to be coded 01M… “M” stands for Mediterranean for sure… ASCAT scan and surface observations … Continue reading
香港天文台現時生效警告
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