…Late-season winter storm for the East Coast on Tuesday…
It continues feeling like winter across much of the country, despite it is now mid-March. A large surface high pressure ridge over south-central Canada is sprawling southward into the central and eastern U.S., allowing for a continuous supply of January-like temperatures through the middle of the work week. Afternoon highs are expected to be on the order of 15 to 30 degrees below normal from the northern Plains to the Mid-Atlantic region, with the possibility of some record lows.
Things get interesting for the East Coast beginning Monday night. A low pressure system crossing the Midwest states and Ohio Valley is expected to phase with another low off the southeast U.S. coast. This will allow for a strong nor’easter to develop near the coast and cause a late-season snowstorm from the central Appalachians to New England, including many of the big cities in the Northeast U.S. Widespread winter storm warnings are now in effect for heavy snowfall accumulations, with some areas likely getting in excess of a foot from eastern Pennsylvania to southern New England. The tricky part of the forecast deals with the rain/snow line over the Mid-Atlantic region with a tight gradient in accumulations expected near the greater Washington DC metro area. Closer to the coast from southern New Jersey to the Carolinas, rain is expected with amounts in excess of an inch likely.
Elsewhere across the continental U.S., expect warm conditions to continue across the southwestern U.S. with no rain or snow in the forecast. The lower elevations of the Desert Southwest could even reach the lower 90s for highs over the next few days with an upper level ridge in place. Onshore flow across the Pacific Northwest will keep scattered showers around, with snow in the Cascades and northern Rockies.
SPECIAL WEATHER STATEMENT
Melted snow will have drained on road surfaces and refroze overnight, creating a black ice threat for this area. Travelers should exercise extreme caution.
Cold Canadian high pressure will continue to bring below normal temperatures to our region through the next several days. Expect a period of dry weather through the day Monday before a frontal system brings a chance of a wintry mix back to the region Monday night and Tuesday. Unseasonably cold weather will persist through the work week, with another low pressure system approaching the area next weekend.
Here is a video retrospective on the Blizzard of 1993 from WLOS-TV, which hit our area 24 years ago.
THREE DAY OUTLOOK
Increasing clouds with highs near the mid 40s and winds out of the east southeast in the 5 to 10 mph range.60% chance of precipitation, with rain and sleet possible before noon and all rain after noon. A tenth of an inch of rainfall is expected.No significant ice or sleet accumulation expected.
Cloudy with patchy fog and lows near freezing. Calm winds shifting to come out of the west northwest after midnight. 80% chance of precipitation, with rain before 2 am and rain and snow afterwards. Rainfall amounts of about a quarter of an inch is expected. Little or no accumulation of snow expected.
Mostly cloudy with highs near the mid 40s and winds out of the northwest in the 10 to 15 mph range with a wind field entering the county around 11 am that will being gusts into the 20 to 30 mph range in the valleys and up to 50 mpg on the ridges. Falling limbs may cause scattered power outages.
Mostly cloudy with lows near 20 and winds out of the northwest around 10 to 15 mph with gusts in the 20 to 30 mph range.
Sunny with highs near the mid 30s.
Mostly clear with lows near the mid to upper teens. Brrrr.
Black ice is a concern for those of you who get out and about before temperatures rise above freezing.
Advisory products from the National Weather Service that impact Macon County have been posted below for your convenience.
NWS HAZARDOUS WEATHER OUTLOOK
..MONDAY…Winter weather possible. A mix of light snow, sleet, and freezing rain may develop across the North Carolina mountains on Monday.
..TUESDAY…Winter weather possible. Accumulating northwest flow snow showers may develop across the North Carolina Mountains.
..WEDNESDAY…Winter weather possible. Accumulating northwest flow snow showers may continue across the North Carolina Mountains near the Tennessee border.
As always, you can check to see what advisories, watches and warnings are in effect for Macon County by visiting http://is.gd/MACONWARN
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Published at 4:10 am on March 13, 2017
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