Odds are increasing for an historic March blizzard.
We are already tracking the two storm systems, which will evolve into Tuesday's Nor’easter: light to moderate snow in the Great Lakes, the area of low pressure, and heavy rain over the Gulf of Mexico, the area of moisture.
All is quiet tonight and Monday. Temperatures will be cold again – 10s at night and low 30s during the day. Clouds begin to increase during the day on Monday. If you need to run errands, Monday after work is the time to do that.
Snow begins by daybreak Tuesday. It will be the type of setup where every time you blink the snow gets heavier. By late morning, snowfall rates will reach 2” to 4” per hour (that’s 1” every 15 minutes!). Thunder snow is also likely for many areas. Intense snowfall rates will continue into the early evening. The storm will start to move away by dinner time Tuesday.
Most of the forecast is nailed down – except for southeastern Massachusetts where there could be sleet or even rain, so amounts will be held down to 6” to 12” in these areas. Parts of the Cape and Nantucket might only see few inches. Elsewhere we are expecting 12” to 18”+. We don’t want to try to pin point the jackpot area – someone will likely see 24” when all is said and done.
The wind is a growing concern. Winds ramp up as the area of low pressure rapidly develops south of Long Island. Inland locations may see gusts up to 40 MPH, and 60 MPH gusts at the coast. This could lead to widespread power outages and minor to moderate coastal flooding.