Tuesday 11:15 a.m.
This video shows how the weather should behave in the aftermath of Sandy:
Stories, accounts, memories and nightmares associated with Sandy will be told for a long time. It has been an epic storm. The utter devastation in the New York City area looks like it came out of a movie, except the set is real, as is the suffering.
The storm will continue to weaken slowly during the next few days as it drifts to the northeast along with the upper-air storm that "captured" it. It was in some ways a repeat of the October 1991 Perfect Storm, except Sandy came ashore; the Perfect Storm did not.
I just got off the phone with one of our key radio group in West Virginia (Metro Radio News), and we were talking about the heavy snow in their mountains. In parts of Tucker, Pocahontas and Randolf counties, higher elevations have been buried by 3 feet of heavy, wet snow. They had interviewed a couple from D.C. who had decided to "drive west to get out of the way of Sandy" and wound up stuck in the West Virginia snowstorm.
At Chicago, the National Weather Service office said their "south buoy" in Lake Michigan had recorded a tie for second place for the highest wave ever recorded there... just over 20 feet.
With the disaster declarations, President Obama has again joined with his predecessors dating back to the 1920s in federal disaster assistance. The first widespread deployment of such assistance began at the insistence of Herbert Hoover (in advising President Coolidge) in the wake of the great Mississippi River Flood of 1927. Hoover's work and leadership during that flood was said to help his bid for the presidency the following year.
As of 11 a.m., Sandy was centered southwest of the middle of Pennsylvania, as shown on this pressure map.
Here's a cool fact: even when Death Valley, California, has a temperature of 110 or 120 degrees, you only have to go up a little more than 3.5 miles to find temperatures at or below freezing.
It appears the dry comfortable air mass now in the Northeast will be replaced by a humid flow from the South Atlantic states for the coming weekend. An upper-air forecast map sequence in the video shows how this could happen. The following map shows the predicted flow from Florida to New Jersey Friday night.
This map shows the pressure analysis for the Northeast and Great Lakes. The gusty flow on the west side of the low pressure area adds a real autumn feel to the air.
Since individual lines and clusters of thunderstorms have limited life spans and change character constantly, forecasting whether it will or won't rain at any one time this weekend is difficult at best. One solution is to have your tablet or phone available with the AccuWeather.com app so you can see where all the storms are at the times when it concerns you the most.
It does look warmer for the weekend, but every time the warm air tries to extend into New England it gets chopped down. There could be more showers at times Sunday and early next week as forest we can tell. If any forecast gives you a headache, why not take a friend's advice: Take two aspen; sequoia in the morning.
This map from 5AM ET shows the cold front that is continuing toward this Northeast and Middle Atlantic states. Temperatures stayed up in the 70s all night ahead of the front but it turned noticeably cooler after the front moved through.