It was a steamy September weekend with temperatures Friday, Saturday and Sunday warming into the mid and upper 80's, with a heat index in the low 90's. More of the same is in store Monday with temperatures warming into the upper 80's and the heat index in the low 90's. Average highs for mid-September should be in the middle 70's.
Tuesday will be humid but there will be an increasing chance for rain and thunderstorms by the afternoon and evening with the arrival of a cold front. The front will briefly bring temperatures into the upper 70's Wednesday, but temperatures will
warm right back into the upper 80's Thursday. An even stronger cold front will move through late Thursday finally bringing temperatures back down where they should be, mid 70's, for the upcoming weekend.
A blocking pattern in the atmosphere, a result of Hurricane Florence making landfall in the southeast, has kept the jet stream buckled north over the High Plains and Midwest. Hurricanes are a great source of energy and can release a lot of heat back into the atmosphere. Often times with
tropical systems that make landfall the atmosphere tends to warm further upstream. But now that the storm has weakened it'll become 'caught up' within the jet stream, quickly moving into the northeast this week. This will allow the jet stream to shift a little further south, bringing an end to the late summer warmth and a return of rain towards the middle of the week.
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