Friday 9 AM
Sandy continues to threaten the Northeast, and in the area where is comes ashore, there will be damaging winds knocking down trees and cutting power, flooding rain and, at the coast, a dangerous storm surge. Time of that is crucial, because we will be close to the time of the full moon, and range between high tide and low tide is greatest then. This map shows the track forecasts of a wide variety of computer models. Why the differences? Each one has its own way of ingesting data and handling the intricate math associated with second order nonlinear differential equations. A big problem is we simply do not have data for every place in the atmosphere.
This video discusses where the storm is heading now, what should happen next, and what some of the effects will be. Unfortunately, this kind of storm can affect millions and cost billions.
Omega blocks are known for causing long periods of whatever kind of weather you had when the block was getting established. In other words, if it was rainy, you were in for more (perhaps a lot).
This satellite picture shows the storm that affected the Southeast on Saturday (1) , the frontal system that will reach the East Coast late tomorrow night (2) and a disturbance in the Pacific Northwest that may affect the Northeast at the end of the week (3) .
A deck of clouds about a half-mile overhead spread westward from the Atlantic to much of the I95 corridor from DC to Boston early this morning. These cloud decks can be a forecaster's nightmare in the spring because ...
The map below the video is one of the GFS solutions for where the southeast storm will be early Saturday. The precipitation is predicted to be farther north than suggested by other models.
It is freezing cold in the Northeast this morning, but this map shows that much more mellow mildness has reached the Plains.
Extensive precipitation straddles both sides of the cold front that was moving through central New York and central Pennsylvania as of mid morning. This radar shows the distribution of rain and snow; some temperatures are added.