Tuesday 10 a.m.
A shot of very cold air is affecting us this week on the strength of face-freezing, collar-clutching, nose-nipping, toe-purpling, thumb-numbing, ice-box bitter, bird-blocking blusters. The icy jaws of winter have opened wide as they bring us face freezing winds from the icy dungeon of Jailer January. This air has crossed the arctic tundra, where venturing out without proper protection is a sure invitation to frozen doom. It won't be just the glacial frigid gelidity that contributes to the feeling of hyperborean chill, but also the adiathermic biting and piercing hiemal keen and nipping winterbound niveous isocheimal and polar unwarmed infrigidation that numbs our thumbs and freezes our toes. In short, we'll face the needles of winter's icy fingers and the piercing refrigerated ice box blasts of marrow-chilling, teeth-chattering, glaciated, bitter blusters of January cold. There's no bybassing of the bitterness, no solace from the sun. By the way, it's gonna be cold.
Today's the anniversary of the birth in 1775 of Andre Ampere, the French scientist who founded the study of electrodynamics. The very next year the American colonies decided to re-volt. In the weather department, the warmup last weekend weekend allowed us to recharge, but since then thoughts of warmth have gotten short-circuited.
Meanwhile, snow lovers see a situation they are not ecstatic about. The computer models bring alternating currents of worry and hope, but in this case it appears we'll have little more than flurries during the next few days, unless you live in the snow belts where heavy snow is generated.
In the major cities of the Northeast, there is nothing that'll keep people in their ohms. Nothing that should cause any outages. However, at the end of the week, we could have a switch. A storm plugged into moisture from the Gulf of Mexico could provide ample snow from the Ohio Valley to the Middle Atlantic coast. With a fast current aloft, we don't expect to see any resistance to the storm's departure for the weekend. It looks like it'll be ever ready to keep on going. Behind the storm, another cold dry cell should reach us.
Just this note of caution. There is still a chance the storm will get zapped. We still have to figure out the schematic for later in the week, so don't give us any static if this forecast doesn't sound well connected. However, if the storm does materialize, it could snow Friday afternoon and night from Lewistown, Pa.,'s Electric Avenue to The Battery in New York City.
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.
Just a 1- or 2-degree temperature difference in the lowest 5,000 feet of the atmosphere can make the difference between heavy wet snow and heavy wet rain. Here is a draft of our snowfall map from mid-morning.
Much can still change with regard to the Saturday storm. This draft map from this morning shows how the accumulations may turn out. The AccuWeather.com staff will be watching this closely. I am happy to see many of our newer forecasters making major contributions.
n the Northeast Corridor, this winter has not created much happiness among people who like snow. In New York City, this is the first year out of the last 9 to have no 2 inch or greater snow event to this point in winter. Ralph Fato (WxNut27) sent out one of his wonderful charts to illustrate the widespread lateness of the first significant snowfall: