Tuesday 10 a.m.
The major storm that caused heavy rain in the I-95 corridor and heavy snow in parts of western and central New York, western Pennsylvania and West Virginia is slowly winding down. The upper-air pattern shows a strong ridge over the Rockies and a strong through in the East. By the weekend, a split flow pattern is predicted. One current will come in from the Pacific, then drop into a trough that moves across the Southwest and South Central states. Another current will move through western Canada, climb over a ridge in Manitoba, then head southeast to the northeastern part of the country. This will set up a huge temperature difference from north to south. This weekend's flow toward Virginia will start out over Arizona, while the flow coming to New York state starts over Hudson Bay! The video shows one of several outcomes.
Around accuweather.com headquarters, we saw snow, but the nearest significant accumulation was on the ridge tops. The camera peers out toward the ridge top and sees what was left of the snow on Tuesday morning.
This map shows the pressure pattern around the big storm that some people in Boston and Providence are comparing with the Blizzard of '78.
In the worst-hit areas, plan for travel bans (for all non-emergency activities) because of impassable roads and extremely poor visibility. This map shows our projection for snow accumulations by early Wednesday. In many areas the heaviest snow should fall overnight and tomorrow morning.
In the worst-hit areas, plan for travel bans (for all non-emergency activities) because of impassable roads and extremely poor visibility. If you get stranded, rescue crews may not be able to reach you. Storms like this sometimes generate thunderstorms within the heaviest snow bands. The map shows predicted snow accumulations by early Wednesday.
It appears likely that many normal activities can go on through the day Monday, as long as the typical cautions for light to moderate snowfalls are observed. Tuesday will be an <strong>entirely different story</strong>. This map shows the GFS- predicted snowfall through 7 P.M. ET Monday:
The second storm we have been talking about will affect the Middle Atlantic region late Sunday and Sunday night. This GFS forecast map is for 7PM ET Sunday and shows precipitation amounts for the 6 hours up to that time.
This was our snow accumulation projection as of mid-morning. A storm that will develop in the Midwest on Sunday is likely to track to the Virginia-Maryland coastal area by Monday morning, then turn east. It will probably bring some to snow places that get mostly rain out out of the first storm.