There's a heat advisory out today until 8:00pm. It's going to stay hot until September first. By September first there will be a tropical system moving over Tennessee and Kentucky. This is bad news for Tennessee because they are still recovering from last week's flooding. For us, this will bring a chance for some rain and cooler temperatures.
There's a degree of uncertainty in computer models between September 5 - 10. Some models want to take us back into the 90's. Others do not. The good news is that after September 10, there is pretty good agreement on saying good-bye to the 90 degree heat. Here is what the NWS has to say:
.Long Term...(Friday night through Wednesday) Issued at 258 AM EDT Thu Aug 26 2021 Ensemble means suggest upper ridging will hold over the Ohio Valley through the end of the week. After that, a short wave trough moving through the northern Great Lakes early next week will help push the ridge back into the southern Plains/Rockies towards the middle of next week. A frontal system is expected to meander over the Great Lakes through the weekend, before getting a push south by next Monday or Tuesday, courtesy of the Great Lakes trough. Can`t rule out a convective threat continuing into early next week, with the potential for successive outflows keeping an effective boundary farther south of the actual frontal position. Thickness patterns also continue favorable for southeast turning convective complexes that may originate over the northern Midwest/Great Lakes. Ensembles are in fairly good agreement in bringing a tropical low north from the Gulf of Mexico early next week, with the potential for this low to reach the Tennessee Valley by next Wednesday. This may serve to slow down or stall the remnant frontal boundary as well. Based on above, will continue to broadbrush PoPs across the balance of the extended period.
