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Invest 91E

Well East-Southeast of the Hawaiian Islands (EP91): A broad area of low pressure located well east-southeast of the Hawaiian Islands continues to become better organized.

Formation chance · 48 hours
70%High
Formation chance · 7 days
90%High

What this means

Well East-Southeast of the Hawaiian Islands (EP91): A broad area of low pressure located well east-southeast of the Hawaiian Islands continues to become better organized. Environmental conditions are expected to be conducive for further development, and a tropical depression is likely to form during the next day or so. The system should move generally northeastward and remain well east of the Hawaiian Islands.

Official resources

Last updated 9/28/2026, 7:45:13 AM · Latest advisory 9/28/2026, 5:31:46 AM