We just had our once-in-a-ten-year flood over this past weekend and now it looks like more heavy rain is on the way for this weekend. Here is what he National Weather Service is thinking:
.Long Term...(Wednesday night through Monday) Issued at 321 AM EDT Tue Jun 22 2021 Things will start to heat back up once again to start the lone term as surface high pressure moves off to the east coast allowing Gulf moisture to be advected northward ahead of a warm front over the lower Mississippi Valley and central Plains and a cold front over the northern Plains. The warm front is expected to lift northeast across central Indiana Friday as the cold front approaches from the northwest. Meanwhile, a Canadian trough will dig southeast out of central Canada and result in southwest flow aloft over the Ohio Valley. This upper flow looks like it will align parallel to the cold front as the latter moves into central Indiana this weekend. Thus, the front could park out for awhile. The front, waves in the upper flow and small scale boundaries will interact with a very moist and unstable atmosphere which could bring more heavy rain and flooding to central Indiana this weekend. WPC is advertising 2 to 4 inches of QPF over the forecast area this weekend into early next week and this looks reasonable based on the above. Temperatures will be problematic as temporal and spacial considerations of the cold front and other boundaries, along with the extent of convection will be major challenges. But, overall afternoon highs in the 80s look good with perhaps some 70s in areas where the front has moved through.
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