This morning we're seeing picture-perfect, fall-like weather conditions across the GTR as a cold front passed through yesterday giving us much, much drier air. The oranges in this image depict the dry air in the mid levels of the atmosphere that has built in behind the departing shortwave trough. Subsidence on the back side of this feature will be giving us lots of sunshine for much of this week.
High pressure to our north, combined with the remnant low of Karen over Florida, will look to enhance the transport of cooler air to spill south from the Ohio River Valley. We'll likely see 40s across much of the GTR tonight with a clear sky, so enjoy it!
The primary shortwave axis has lifted well off to our northeast, but a piece of energy is still lagging behind and has become kind of 'cut off' from the upper flow; this is likely the remnant low of Karen being absorbed into the mid-level flow. Notice the large counter-clockwise motion in the Florida Panhandle. This is common for big troughs to sometimes leave spokes of energy behind. But, since we're on the back side of this feature, we'll continue seeing subsidence associated with negative DPVA and continue to see lots of sunshine through this week.
A strong shortwave is forecast to move northeast across the nation's midsection, but should continue toward the northern Great Lakes. However, subtle, weak waves of energy (as seen in the first image) are likely to be leftover in the overall weakness in the upper heights. The second image shows associated moisture (at 700mb, indicative of clouds) increasing as a result of the weak uplift from the impulses of energy riding ENE in the mid-level flow.
Overall, a fantastic week is expected with lots of sunshine and temperatures in the upper 70s during the day and in the 50s overnight.
IW
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