Thursday 8 AM
Beware the Ides of March. That was dramatic foreshadowing concerning Julius Caesar. We can use Shakespeare's Play titles to describe the upcoming weather. From the Plains to Pennsylvania, temperatures are like a Midsummer Night's Dream. However, along the Northeast coast, it is much cooler. The merchant of menace is a northeasterly flow of air from the Atlantic, and predicting its demise often leads to a Comedy of Errors. In that case, your forecaster's efforts becomes Love's Labor's Lost.
Across the Great Lakes and Midwest, a series of disturbances will move through what is otherwise a warm and dry weather pattern. This can lead to bands of thunderstorms. For example, if a thunderstorm would Romeo past Joliet Illinois tomorrow, it could later cross Michigan, pass Detroit and reach the Merry Wives of Windsor, Ontario. Some of the showers can move all the way to the East Coast
For the weekend and into next week, warm air will stage a comeback in areas of the Northeast that are now cool. It will feel like it often does in March across Georgia and the Coriolanus. This means All's Well That Ends Well (although we cannot promise the warmth will remain through a Twelfth Night.) While there could be a few thunderstorms in the warm air mass, most of the time the idea of rain will be Much Ado About Nothing.
On this map, the lines show the dividing line between the easterly ocean flow and warm breezes from the southwest are over Maryland.
in response to the approach of a deepening trough from the Plains, a Midwest low pressure area will grow stronger as it moves east to arrive on the New England coast Saturday morning.
In the I-95 corridor from D.C. to NYC, temperatures will be up past 80 this afternoon. However, between now and Saturday, a major change is on he way.
In eastern New England, an onshore flow of cool damp air prevailed all morning. There could be a last-minute warmup this afternoon. The affected areas will certainly be warmer tomrrow morning than they were this morning.
Now, out-of-season warmth is set to be the rule through midweek from the Ohio Valley to much of New England. Peak leaf color in Pennsylvania and New Jersey ranges from now northern mountains) to Halloween (in parts of South Jersey).
The Pacific storm caused some strong thunderstorms in northwest Oregon yesterday, bringing an end to a very long hiatus in the need for tornado warnings there. Note also the lack of tornadoes in eastern Tennessee.
Although the storm is not headed toward the US mainland, 6 to 8 foot waves are found not too far offshore from the Carolinas.