Good afternoon everyone, Attached is a brief outline on the upcoming winter storm along with several images attached. While specific snow amounts are still uncertain and hinge on when exactly snow changes to sleet, confidence is very high that the Tuesday pm commute will be significantly impacted with very hazardous travel. *What has changed ...* - *Very High confidence in a significant impact to the Tuesday PM commute. 1-2 inch per hour snowfall rates are expected for at least a brief period of time, especially near and north of the MA Turnpike.* - The Winter Storm Watch has been upgraded to a Winter Storm Warning for Berkshire county in MA. *What / Where / When ...* - Snow develops between 10 am and noon across western MA/northern CT reaching eastern MA/RI between noon and 3 pm. - *Significant impact expected for the Tuesday afternoon and evening commute across all of southern New England:* - Hazardous travel with 1-2" per hour snowfall rates and poor visibility expected for at least a brief period of time during the Tuesday PM commute, especially near and north of the MA turnpike. - Snow changes to a period of heavy sleet from southwest to northeast between 4 and 10 pm Tuesday evening, but heavy snow may linger longer in northeast MA. - Sleet changes to rain across most of eastern MA and RI by or shortly after midnight. - Sleet changes to a period of freezing rain across much of interior MA and northern CT near or shortly after midnight. Ice accretion of one to two tenths of an inch expected, but the threat of tree damage and power outages appears rather low. - The steady precipitation will be coming to an end in most locations before the Wednesday morning rush hour. Untreated roads across the interior MA/CT may still be snow/ice covered, but the impact will likely be significantly less then the Tuesday PM commute. - Temperatures will rise above freezing in all locations by late Wednesday morning. No problems expected for the Wednesday pm commute. *Uncertainty ...* - Specific snowfall amounts remain uncertain. 4 to 7 inches are forecast near and north of the MA Turnpike with 2 to 4 inches south of the Pike. These amounts may increase or decrease by a few inches, dependent on the specific time snow changes to sleet. - Regardless of specific snow amounts, High confidence in a SIGNIFICANT IMPACT for the Tuesday PM commute with at least a brief period of 1 to 2 inch per hour snowfall rates in most locations that will stick to roadways immediately. Please let us know if you have any questions or concerns. Thank You Meteorologist: Hayden Frank 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>