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 >

 

 
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NBH NBS NBE NBX

 

Product Name Product Type Time step Forecast Hours covered
NBH Hourly 1-Hourly Hours 1-25
NBS Short 3-Hourly Hours 6-72*
NBE Extended 12-Hourly Hours 24-192*
NBX Super-Extended 12-Hourly Hours 204-264* (continuation of NBE)

 

grey dot iconUnderstanding...

Hourly (NBH) Guidance
Short (NBS) Guidancee
Extended (NBE) Guidance
Super-Extended (NBX) Guidance