Tough wind chills by dawn Tuesday in CNY, very heavy lake snow for the North Country next

As we have been telling you for nearly a week, the coldest wind chills of this winter season will arrive by Monday night through dawn Tuesday across all of Central New York!

We still believe that wind chills should drop to generally as low as -5 to -15 degrees (below zero) by sunrise Tuesday. However, some spots may approach -20 degrees.

These low wind chills can create frostbite in less than 1 hour!

Important frostbite reminders (on exposed skin) so you can make empowered decisions about being outside:
–You can get frostbite in 30 minutes when the wind chill is -20 degrees (below zero).
–You can get frostbite in 20 minutes when the wind chill is -30 degrees (below zero).
–You can get frostbite in 10 minutes when the wind chill is -40 degrees (below zero).

UPDATE: Cold Weather Advisories have now been issued for most of CNY, this includes the city of Syracuse. This Weather Alert runs from midnight Monday night through noon on Wednesday. The wind will increase late this afternoon and tonight, the temperature will be falling. The combination will make the reel feel much colder than the actual temperatures which drop to near 0 to 10 above overnight. Remember there was a change for this winter and a cold weather advisory replaces what was in previous winter a “wind chill advisory”. Regardless, the meaning is the same.

When cold weather advisories are issued, here is what you should do:
–If you must be outdoors, use common sense and dress warmly.
–Make sure that all exposed skin is covered. If possible, avoid prolonged exposure to the cold to prevent frostbite and hypothermia.
–Do not leave pets outside

During the coldest air of the season, it appears that very impactful and in places heavy lake effect snow will stream across portions of Jefferson, Lewis, and far northern Oswego Counties from Monday evening through Wednesday midday. East and northeast of Lake Ontario, over the northern Tug Hill, will see the heaviest snowfall rates!

Before it heads into the North Country, portions of the lakeshore communities between Rochester and Oswego will likely see the most snow through Monday late afternoon. Some of this lake-effect snow will also swipe through parts of the North Finger Lakes region and the immediate CNY area. As it will only be over the Syracuse area for a few hours and mostly be lighter, at most we see 2″ in the city. Higher totals will take place to the west and northwest of Onondaga County.

When you have lake effect snow at the same time you have very cold temperatures, the salt brine mixture will not be as effective in melting snow. This will create icy and worse driving conditions in these counties.

With all of this in mind, I will first show you the snowfall forecast graphic by Monday early evening below.

Forecast snow between late Sunday night & 7:00 PM Monday:

My next forecast snowfall graphic is for new snow between Monday evening and 7 AM Wednesday.

Expect extremely rough to possibly impossible driving conditions over parts of southeastern Jefferson and northwestern Lewis counties during this part of the lake effect snow event. Feet of snow are expected in a narrow corridor!

New snow between 7:00 PM Monday & 7 AM Wednesday:

Stay with the CNYcentral Weather Authority team for updates!