Sunday, December 11, 2016

Winter Storm Caly Spreading Snow Across Northeast; First Snowfall of the Season in New York City; Hazardous Travel Conditions Likely

December 11,2016
Winter Storm Caly will continue to push east into Monday, spreading a swath of snow across parts of the Great Lakes and Northeast states. The storm began its cross-country trek last Thursday in the Pacific Northwest.
(MORE: How Winter Storms Are Named | Winter Storm Central)

Current Radar, Temperatures, Conditions
(INTERACTIVE: Current Radar | Road Conditions)
Winter storm warnings and winter weather advisories have been issued by the National Weather Service from parts of the Great Lakes to New England. A freezing rain advisory is also in effect across portions of southwestern Pennsylvania, including Pittsburgh, eastern West Virginia, western Virginia and interior Maryland. An ice storm warning is in effect for far northwest Maryland.

Winter Weather Alerts
Caly brought the first snowfall of the season to New York City Sunday evening, with measurable snow (0.1 inches or greater) reported at Central Park, La Guardia Airport, JFK Airport and Newark Liberty Airport.
As of Sunday evening, Caly had dumped more than a half foot of snow on at least eight states in the Midwest and Great Lakes, including Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, South Dakota and Wisconsin. The top Midwest snow total, so far, is 12.1 inches near Redwood Falls, Minnesota. A full recap of Caly can be found at the bottom of this article.
A plane slid off the runway at Detroit Metro Airport Sunday afternoon, due to heavy snow accumulating quickly and making runway conditions slick. Fortunately, there were no reports of injuries.
(LATEST NEWS: More Than 1,000 Flights Canceled, Hundreds of Accidents From Caly)
UPDATE: No injuries reported after Delta flight slides off runway at DTW http://bit.ly/2gAeG8D  (Pic courtesy Isaac Price)

Here's what to expect from this latest winter storm through Monday.

Caly Forecast

As mentioned before, Caly's final chapter will be Sunday night into Monday, from the Great Lakes to the Northeast.
Let's lay out the general timing, then discuss potential amounts.

Sunday Night

  • Snow will be predominate north of Interstate-80, with mainly rain south of that interstate. This means much of New England, New York state and the Great Lakes will see snow, while the mid-Atlantic and Ohio Valley see mostly rain. One exception will be the higher elevations of southern and western Pennsylvania, interior Maryland. eastern West Virginia and western Virginia, where freezing rain and ice are a concern.
  • Hazardous travel conditions are likely across all of the above mentioned areas, due to icy roadways and low visibility from falling snow.
  • New York City and Boston will both see light accumulating snow Sunday night before changing to rain.
  • Cities: Detroit | Cleveland | Pittsburgh | Buffalo

Sunday Night's Forecast

Monday

  • Snow will persist across the interior Northeast during the day, before coming to an end in most areas by Monday night. This includes a swath from northern Pennsylvania to New York, Vermont, New Hampshire and Maine.
  • The immediate Interstate-95 corridor from Boston to New York City will likely see rain Monday morning.
  • Monday morning's commute from Rochester, New York, to Bangor, Maine, will be messy with snow ongoing in that swath of the region.
  • Cities: Bangor, Maine | Albany, New York | Burlington, Vermont

Monday's Forecast

How Much More Snow?

While we're not expecting a crippling heavy snow event, additional moderate to locally heavy snow totals over 6 inches are possible from the southern Great Lakes into the interior Northeast.
This is most likely where heavier, small-scale, east-to-west oriented snow bands train over a given area, like train cars over a section of railroad track.
Lighter totals are expected either north (air too cold/dry) or south (too much rain mixing in) of that general swath.
(MORE: Is Light Snow More Dangerous For Drivers Than Big Snowstorms?)

Snowfall Forecast

Caly Recap

Here is a recap of Caly so far, beginning with the most recent snow in the Northeast, followed by a look at what happened in the Midwest and West.
Northeast Region
Snow began to spread into the Northeast Sunday afternoon. Here are some of the top snowfall totals by state, as of Sunday evening.
Massachusetts: 0.1 inches in Savoy
New Jersey: 1.5 inches in Wantage
​New York: 3 inches near Williamsville
Pennsylvania: 4.3 inches in Meadville
Midwest Region
Snow began to spread into the northern Plains and Midwest on Saturday. Here are some top snowfall totals by state, as of Sunday evening.
Illinois: 10 inches near South Beloit
Indiana: 9 inches near Simonton Lake
Iowa: 6 inches in Forest City
Michigan: 10.5 inches in Norton Shores
Minnesota: 12.1 inches near Redwood Falls
Nebraska: 3 inches near Valentine
Ohio: 9 inches near Tedrow
North Dakota: 5 inches near Plaza
South Dakota: 8.6 inches near Clear Lake
Wisconsin: 9.1 inches near Palmyra
Western Region
Snow was reported in northwest Oregon, including around Salem and Portland, northward into southern Washington ahead of a warm front Thursday evening. Portland measured an inch of snow and up to 0.75 inches of ice was reported in the Portland area, which caused power outages. Along and behind the warm front, this snow changed over to freezing rain in the lower elevations of the Pacific Northwest.
Seattle experienced light snow through much of Thursday night and into early Friday morning, with about an inch of snow recorded. Snow also spread east throughout the Rockies.
Here are some notable reports by state in the West. All reports are for snow unless otherwise indicated.
Colorado: 18 inches at Arapahoe Ski Basin
Idaho: Up to 46.1 inches estimated at Galena Summit
Oregon: 11 inches at Hood River; 7.0 inches in Bend; Over 1/2 inch ice east of Portland in East Laurelhurst neighborhood
Montana: 9.5 inches in Columbus Falls
Nevada: Up to 32 inches at Mount Rose Ski Area
Utah: 25 inches at Powder Mountain
Washington: 18.0 inches near Packwood; up to 1/2 inch ice near Maple Valley
Wyoming: 29.0 inches at Jackson Hole
MORE: Seattle Snow

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