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UPDATED: Wintry mix brings messy weather, road impacts Tuesday night

FORECAST FOR SNOW & SLEET ACROSS OUR AREA THROUGH TUESDAY EVENING

***UPDATED at 7:05 PM Tuesday***

A Winter Storm WARNING is in effect for the following counties:

  • Madison, Oneida, Onondaga & Otsego counties until 7 AM Wednesday.
  • Herkimer county until 4 PM Wednesday.
  • Jefferson & Lewis counties until 10 PM Wednesday.
  • Oswego county until 7 AM Thursday.

A Winter Storm WARNING means that significant winter weather is likely over widespread areas during the period outlined.

Here is what you should expect:
--Varying amounts of accumulating snow are likely within the warned areas before changing over periods of sleet and freezing rain.
--The best chances to stay mainly as snow over far northern areas and the North Country. Lower amounts of snow is likely over southern counties with more in the way of sleet/freezing rain or even rain.

A Winter Weather ADVISORY is in effect for the following counties:

  • Ontario, Wayne, & northern Cayuga counties until 4 AM Wednesday.
  • Yates, Seneca, Schuyler, Tompkins, southern Cayuga, Cortland & Chenango counties until 7 AM Wednesday.

A Winter Weather ADVISORY in this case has been issued for periods of snow to change to periods of sleet and freezing rain. Accumulating snow is likely before changing over to accumulating sleet and then changing over to various amounts of icing over our area. While this will cause sloppy and trick travel, it should not be enough to cause major disruption in travel.

Here is what you should expect:
--Know which county you live in, and where you are in relation to steady snow.
--While the amount of snow in the advisory area will not be overwhelming, enough snow will occur to cause snow covered and slippery conditions, especially on less treated and unplowed roads.
--Sleet is precipitation that falls as small ice pellets.
--While sleet does accumulate, it usually accumulates at a much slower rate than snow and tends to squash previous snow accumulations.
--Sleet is slippery when not treated so use caution travelling and walking.
--Freezing rain is precipitation that falls as liquid rain, but then freezes on contact with roads, sidewalks, cars, trees and power lines.
--As ice builds up on trees and power lines, it is possible that tree branches and power lines may be downed. Keep this in mind if you travelling to or live in these counties.
--The ice should also not enough to cause damage trees and power lines.
--Instead, slick conditions on roads, sidewalks, parking lots, and driveways are likely.


HERE ARE FUTURECAST WEATHER PLOTS THROUGH WEDNESDAY MORNING:





FORECAST FOR SNOW & SLEET ACROSS OUR AREA THROUGH TUESDAY NIGHT:




FORECAST FOR SNOW & SLEET ACROSS THE IMMEDIATE CNY AREA THROUGH TUESDAY NIGHT:



After this storm system exits, we have NEW issues to deal with:
--Our entire area will be quite breezy with sustained winds of 15-25 MPH.
--Our entire area will have wind gusts to 40-50 MPH.
--Wind gusts may be even higher directly along the shoreline of Lake Ontario.
--Lake effect snow should occur starting Wednesday morning northeast of Lake Ontario.
--Lake effect snow should move southward to position directly east of Lake Ontario during the day.
--Wednesday night should feature lake effect snow moving a bit further southward over Oswego and northern Oneida counties.
--Thursday morning lake effect snow should then slowly weaken in these counties.
--Elsewhere, some Lake Erie scattered snow showers will swipe across parts of central and southern NY.
--Preliminary snow accumulations from the lake effect snow between Wednesday morning and midday Thursday will range from 3-6" to 6-12" for many areas east of Lake Ontario to locally 12"+where the snow persists.
--The best chances for those higher end accumulations from the lake effect will be portions of Oswego, northern Oneida, Lewis and southern Jefferson counties.
--The rest of CNY will probably see much lower amounts ranging from little to nothing to locally 1-3" of snow.



FORECAST FOR NEW LAKE EFFECT SNOW BETWEEN 7 AM WEDNESDAY AND 1 PM THURSDAY ACROSS MUCH OF CNY:






FORECAST FOR NEW LAKE EFFECT SNOW BETWEEN 7 AM WEDNESDAY AND 1 PM THURSDAY EAST OF LAKE ONTARIO:


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