Significant snowfall amounts are expected on Sunday into Monday, with Connecticut facing 12 to 18 inches of snow from this major winter storm. Here's the latest timing (in three-hour increments) of how the snow accumulation is expected to progress across the state.

A Severe Cold Weather Protocol is in effect in Connecticut starting at noon on Friday, Jan. 23, and will remain in effect until noon on Wednesday, Jan. 28. Shelters and warming centers around the state will be open throughout the duration of the Protocol. Dial 211 or go to 211ct.org to find your nearest warming shelter.

NWS believes there is approximately a 50% chance of 12 inches or more of snowfall throughout Connecticut between late Saturday night and into Monday. The agency predicts it might begin snowing as late as early Saturday night and may last until early Monday afternoon.

When will the snow start? How much snow? Will it be fluffy or wet snow? All those questions are answered here.

Gov. Ned Lamont made the announcement on Wednesday ahead of "some of the coldest weather Connecticut has had in quite a while."

The forecast said Connecticut on Saturday will experience temperatures in the high teens. However, the rest of the week as well, Jan. 26 through Jan. 30, is expected to see sub-freezing temperatures, with overnight low temperatures in the teens and single digits.

An Extreme Cold Warning and a Winter Storm Warning are both in effect through the weekend. FAYETTEVILLE, Ark. — As the 5NEWS viewing area in Arkansas and Oklahoma braces for a major winter storm, the National Weather Service (NWS) has enacted multiple warnings based on expected conditions.