National Weather Service United States Department of Commerce

Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

The tropical systems depicted on this map west of 180 (dateline) are based on bulletins issued by the Joint Typhoon Warning Center (JTWC), based in Honolulu, HI. The Regional Specialized Meteorological Center (RSMC) for this area is the Japan Meteorological Agency (JMA).

 

To learn more the new probabilistic tropical cyclone graphics, read our introduction here: Introducing New Probabilistic TC Graphics PDF

 

 
 

The cone graphics for the West Pacific are based on the following:

 

Forecast Period (hours) 2/3 Probability Circle, West Pacific Basin (nautical miles)
12 35
24 50
36 65
48 80
72 120
96 165
120 225