Shared by IMSG:
GOES West entered Rapid Scan Operations between 1829Z on October 15 through 1159Z on October 21 to provide coverage of Hurricane Ana as it moved south of the Hawaiian Islands. This movie shows all available sunlit images with night’s passage remaining dark. Seen here, on October 15, Tropical Storm Ana was approximately 590 miles southeast of Hilo, Hawaii. On October 16, the U.S. Coast Guard made preparations to close Hawaii’s ports east of Oahu as the storm moved west-northwestward. The center of Ana passed about 115 miles southwest of the Big Island on the night of October 17. Heavy rainfall and rising surf created flash flood conditions on the Big Island. Similar conditions affected the main Hawaiian Islands on October 18 as the center of Ana passed 95 miles south of Ni’ihau with maximum sustained winds near 80 mph with higher gusts. Ana continued moving northwestward through October 19, with tropical storm winds extending outward up to 105 miles from the center. Watches and warnings for the main Hawaiian Islands were discontinued on October 20 as the storm continued to move west.
Rapid scan operations provide enhanced coverage during times of critical need in order to provide the most up-to-date information for forecasters to provide watches and warnings in support of a Weather-Ready Nation.