Wunderground.com - 1/25/13, Dr. Jeff Masters
Figure 1. A powerful extratropical storm with a central pressure of 984 mb begins to wind up about 500 miles east of Newfoundland, Canada, at 10 am EST January 25, 2013.
The January 2013 North American cold wave is winding down, after bringing five days of bitter cold to Canada and the Midwest and Northeast U.S. In the U.S., below-zero temperatures were recorded Friday morning in just six states east of the Rockies--half as many as on Thursday morning. The coldest spot was Saranac Lake in New York's Adirondack Mountains, which bottomed out at -18°F (-28°). In nearby Malone, NY, flooding is occurring, thanks to an ice jam on the Salmon River caused by this week's cold weather.
The weather was a bit warmer on Mt. Washington, New Hampshire today, where the temperature of -17°F (-27°C) combined with a wind of 81 mph to create a wind chill of -61°F (-52°C). The most dangerous winter weather today will be due to the Wrath of Khan--a low pressure system traversing Tennessee and Kentucky has been named Winter Storm Kahn by TWC, and will bring as much as 0.5" of ice accumulation from eastern Tennessee and Kentucky through North Carolina and northern South Carolina, potentially causing major power outages. Snow will impact areas from the Ohio Valley through western Pennsylvania, West Virginia and Virginia, with 1" expected in D.C. and 1 - 3" in Baltimore.
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