Good afternoon everyone, We continue to monitor a low pressure which will bring a period of snow, changing to rain for most, then back to snow late Tuesday into Wednesday. Due to uncertainty in how far inland the change to rain will penetrate, it is still difficult to determine snowfall amounts. We have included a first cut at the best and worst case scenarios, as well as an updated map of our current precipitation type expectations. Have higher confidence in a transition to rain across the eastern half of southern New England. Greater uncertainty with snowfall totals across the interior. We are still not certain how far inland the mixing line will get. *What:* - A storm system, moving along the northeast coast. - Potential for a period of snow, with a risk for total snowfall reaching Winter Storm criteria for some, especially across the western higher terrain. - Low risk for a period of ice and gusty winds. *Where:* - The highest risk for significant snowfall will be across northern and western portions of Massachusetts and Connecticut, with lower amounts toward the southeast coast. - Risk for icing and strongest winds highest across Rhode Island and Southeastern MA. *When:* - Beginning as mainly snow late Tuesday - Potential for a change to ice (with some snow continuing) early Wednesday morning. - Rain may change back to snow with additional accumulations possible Wednesday morning - Mostly done by Wednesday afternoon - Low risk for impact to Tuesday evening commute, higher risk for Wednesday morning commute. *When we will know more:* - We will begin to highlight details over the next 36 hours. Matthew Belk If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>
