Now that most of Northeast Ohio has had a killing frost (Hopkins 32f on 10/29/13), people may be wondering when will Indian Summer arrive. First we must define Indian Summer. The US National Weather Service defines Indian Summer as a period of warm and sunny days following a sharp frost. It appears that next week the region will see several consecutive days of above normal temperatures and with a little luck, sunny skies early in the period. This is all in response to the deep cold trough that was located in the Eastern US lifting out and being replaced by a warm ridge centered over the Southeastern States. In the short term, a warm and wet system will progress though the region by Saturday morning bringing a brief period of cooler temperatures for Saturday and Sunday. After that, Indian Summer should arrive for all to enjoy!
On Monday, the high will begin moving east of the area allowing warming temperatures (yellows and oranges) to return to the area after a brief cool period during weekend.
The warm ridge centered in the Southeastern States will allow warmer then normal temperatures to flow north and east.
The North Atlantic and Arctic Oscillations are remaining positive indicating no major cold periods for the first week of November in the Eastern USA.
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