National Weather Service United States Department of Commerce

Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Tropical Cyclone Climatology in the Pacific


Tropical Cyclone Climatology 1966-2005

Hurricane Symbol

  Images below taken from Cindy Dettmer-Shea's Thesis Research at the University of Hawaii at Manoa, 2008

Tropical Cyclone Tracks By Month Mean Tropical Cyclone Motion and Speed

Landfalling Tropical Cyclones

Tropical Cyclone Tracks During El Nino/La Nina Years

Total Tropical Cyclones

Tropical Cyclone Genesis Positions and Tracks In The Eastern Pacific Tropical Cyclone Tracks in the Eastern Pacific (1966-1993) Tropical Cyclone Frequency in the Eastern Pacific, NW Pacific and SW Pacific

Climatology of Tropical Cyclones in the Central Pacific Basin (WFO Honolulu)