Coldest Air so Far This Season expected for Central & Eastern U.S.

It may only be November, but a blast of winter is poised to target the central United States for the second half of this week and spread to the eastern States this weekend and next week.  The latest weather models are predicting temperatures at 850 millibars between -10 and -20 degrees Celsius over much of the north-central and northeastern United States early next week.  This will support multiple days of below freezing high temperatures for cities such as Bismarck, North Dakota and the Twin Cities of Minnesota, where average high temperatures are still in the 40s Fahrenheit.  By the middle of next week, the season’s first freeze will be possible for the major cities along the Interstate 95 corridor.

 Source:  Tropical Tidbits

Source:  Tropical Tidbits

With the cold blast will come multiple threats of snow, especially for the traditionally favored lake-effect snow belts.  But even the non-lake effect snow regions of the Upper Midwest will have the threat of  accumulating snow for Thursday and Friday of this week.  Longer range models indicate parts of the interior east of the Appalachian Mountains may get in on the snow action next week, but details remain uncertain at this time.

Tornadoes Strike Fishers Island, Coastal New England

Even though the calendar will turn to November shortly, more severe weather struck portions of coastal southern New England as well as Fisher’s Island, NY on Monday morning.  Three tornadoes struck the area during that time.  One began as a waterspout over eastern Long Island Sound just after sunrise Monday before making landfall as a tornado on Fishers Island.  The tornado was classified as an EF-1, knocked down trees and power lines and damaged numerous homes on the island.  It was also the first tornado on the island since records began in 1950.  Shortly after the Fishers Island tornado lifted, another one touched down in nearby North Stonington, CT, also an EF0.  It was just the third tornado to form in New London County, CT at all since 1950.  Later that morning, yet another EF0 tornado touched down in Woods Hole, MA, and damaged portions of the Woods Hole Golf Club.

 Source: WPRI

Source: WPRI

These tornadoes came just six days after EF1 tornadoes struck North Providence, RI and Norton, MA.  While a cold front is expected to bring more rain to the area towards the end of this week, severe weather is not expected with this new system.

Rare Late-Season Tornadoes Strike Rhode Island and Massachusetts

Just 8 days before Halloween, the weather turned spooky in parts of eastern New England on Tuesday, as two tornadoes and a waterspout touched down in the region.  The first tornado touchdown occurred in North Providence, Rhode Island, and was classified as an EF-1 by the National Weather Service.  Numerous trees were uprooted and shingles were blown off of roofs in the area.  Though the tornado lifted once it reached nearby Lincoln, RI, the same cell produced another EF-1 tornado in Norton, Massachusetts.  It was just the sixth tornado that touched down in Massachusetts during the month of October since 1955.  Earlier in The day, a waterspout formed near the north end of the Cape Cod Canal in Massachusetts, the first in the area since 1997.

 Source:  WPRO

Source:  WPRO

Fortunately, no more severe weather is in the forecast for the region.  However, a coastal storm will bring heavy rain and gusty winds to the region for Saturday.

Coldest Air of Season So Far to Invade Northeast U.S. This Week

After a summer and early fall that featured much warmer than normal conditions over much of the northeastern United States, Mother Nature has decided to flip the seasonal switch on the region.  Multiple shots of much below normal temperatures are expected over the northeastern United States through the remainder of October.  One such shot of cold air is expected to arrive for Thursday with 850mb temperatures approaching -10 degrees Celsius.  This type of air mass supports high temperatures in the 40s Fahrenheit where average high temperatures are still in the lower 60s.  Frost and freezes are also expected outside of the coastal urban centers, as many locations are expected to dip into the 20s across much of the interior northeast.

 Source:  College of DuPage

Source:  College of DuPage

The cold temperatures are also expected to trigger lake effect precipitation as the air blows over the warmer waters of the Great Lakes.  While a major snowfall is not expected this week, some light snowfall accumulations will be possible in the higher elevations of Upstate New York and Northern New England by Thursday.