It is VERY late, so I’m guessing that about two people will read this article. Anyway, if you read my article that I posted earlier on the severe weather/tornado threat, you probably already know where most meteorologists and weather forecasters will be focusing all of their attention this week, unless they forecast locally. I don’t want to neglect the regions farther east since many locations across the eastern half of the U.S. will be getting several inches of rain.
Dry surface high pressure is currently moving off the East Coast, while upper-level ridging is building over the eastern half of the U.S. This ridge is going to continue to build throughout the week, but it is going to remain very flat. The overall flow (wind) aloft will be from the southwest/west, so this should pull in warm and moist air from the Pacific. Closer to the surface in the lower-levels, the pattern is going to favor moisture and warm air getting pulled up from the Gulf of Mexico.
Later in the week, the surface low pressure system that’s going to develop in response to the upper-level trough in the western United States (the feature responsible for the coming severe weather) will be moving from the Plains and will eventually shoot northeast. As this system moves across the U.S., warm and moist air will get pulled up from the Gulf of Mexico into the warm sector of the system, which is south of the warm front and ahead of the cold front.
Without getting into the nitty gritty details, get ready for rainy and stormy conditions across the Deep South, Mississippi Valley, Tennessee Valley, Ohio Valley, and all the way to the East Coast. Oh by the way, parts of California will be getting some beneficial rain/mountains snows! I shared WPC’s 5-day rainfall total forecast. You’ll have to forgive me for not making my own map.
WPC’s 5-Day Rainfall Total Map: