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.
...after all that, the point is that zone will be north of most of the eastern half of the country. It will be very warm to hot south of the jet stream. However, weakening cold fronts can advance south of the jet stream. then return north as the next disturbance in the flow approaches.
Yesterday, the temperature hit 92 at Newark, New Jersey, and 90 in Boston. The following map shows a northerly flow affecting the Northeast today, and so it will be noticeably cooler and less humid.
This map shows lightning strokes from 8 a.m. ET yesterday through 7:54 a.m. ET today. There was quite a bit of it in Utah, Colorado, New Mexico and Arizona. For the whole map, 156,172 lightning strokes were recorded.
Looking at the west-to-east upper air flow over New England well ahead of the storm, it seems like the hurricane should stay out at sea, However, as we look through the series of maps, we see the upper-air flow congealing into a strong eastern trough that helped the storm to come right up the coast instead of heading out to sea.
On this satellite picture, we can see the basically dry weather in the Eastern states. The cold front that will ease the midweek heat in the Northeast is shown by the band of thunderstorms in the Midwest. The thunderstorms may weaken and become more scattered as the front comes into the Northeast.
A storm in the tropical Atlantic is being observed for possible strengthening. This map shows the variety of models purporting to show where the center will go. Most solutions suggest it stays well offshore, but you will notice a few outliers suggesting more threat.