One cell per hour, per station. Amber marks are hours with no record at that station — drawn, never filled. The cyan line is the selected hour; station labels on the map follow it.
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Wind · knMODELED
Hs · mMODELED
01234
Tropical cyclones · NHCOFFICIAL
disturbancedepressionstormhurricanemajor
7-day formation:lowmediumhigh
Wind field now:34 kt+50 kt+64 kt+ (hurricane)
earliest reasonable arrival of tropical-storm-force winds (NHC, local time)