TWENTY-ONE-E
Interests in southwestern and west-central Mexico should monitor the progress of Tropical Depression Twenty-One-E.
Plain Language Summary
Tropical Depression Twenty-One-E is about 540 miles south-southeast of Acapulco, Mexico (and about 820 miles southeast of Manzanillo, Mexico), moving northwest at 10 mph. Maximum sustained winds are 35 mph.
Why forecasters expect this
Winds in the middle layers of the atmosphere are being guided by a broad zone of higher pressure; this “mid-level ridge” (a broad area of higher pressure in the middle layers of the atmosphere) is why NHC’s forecast keeps the system following a similar overall steering pattern at first.
The environment ahead (wind shear, ocean heat and moisture along NHC's forecast track, from NHC's statistical guidance) is part of Advanced. Upgrade to Advanced