It’s time for a forecast for the Great Lakes. We should be seeing some crisp, autumn days, but how crisp, and how autumnal will it be?
At 952ET, Mansfield was reporting a temperature of 60 degrees with clear skies. With high pressure dominating the Great Lakes, there was nothing on the radar for miles. Two high amplitude troughs lie at either side of the ridge, but it was a classic Omega block in the Great Lakes region.
The block is beginning to break down, however, thanks to the western trough. A closed circulation will develop at the base of the trough and cut off over northwestern Mexico, leading the northern in and outflow of the higher amplitude trough to scoot eastward at a greater pace. Surface low pressure will develop in the Upper Midwest through the day tomorrow, while an associated cold front will intensify from Lake Michigan to Kansas late in the day. It will arrive in Mansfield during the predawn hours, bringing some rain, perhaps an embedded thunderstorm and some blustery wind. Things will quiet down and clear out by the evening. Expect a mild cool down.
Tomorrow – Increasing clouds, High 74, Low 52
Friday – Rain through the morning, with a chance at a thunderstorm, High 65, Low 48
TWC: Tomorrow – Mostly Sunny, High 77, Low 51
Friday – Showers, High 66, Low 54
AW: Tomorrow – Nice with intervals of clouds and sun (late rain) High 76, Low 50
Friday – Mostly cloudy and not as warm; a little rain in the morning followed by a shower in the afternoon High 66, Low 51
NWS: Tomorrow – Patchy fog before 10am. Otherwise, mostly sunny, High 74, Low 48
Friday – Showers, mainly before 1pm. High 67, Low 52
WB: Tomorrow – Patchy fog in the morning, Partly cloudy, High 74, Low 48
Friday – Showers, High 66, Low 52
WN: Tomorrow – Partly Cloudy with Patchy Fog High 75, Low 48
Friday – Mostly Cloudy with Light Showers High 68, Low 61
FIO: Tomorrow – Light rain starting in the afternoon, continuing until evening. High 76, Low 51
Friday – Light rain until afternoon. High 66, Low 51
Fortunately for the night tonight, it’s quiet, and for the forecast ahead, a recovery will come quickly. Look how empty this radar is. Most of the green is ground clutter.