12/31 – Rob’s “Final Morning of 2021” Forecast
Today will bring continued warm and humid conditions with partly to mostly cloudy shies, a bit more sunshine this afternoon. The main impact for the weekend still comes from the front moving into region. The mid to upper levels are fairly dry and additional instability exists in the lower levels. While the area is under a low threat for severity with the main threat north, this primarily is looking to be a heavy precip event with a few stronger cells. Once the front moves through temps are expected to decrease as the high settles in behind the front.
At the start of the long range forecast, the upper level disturbance moves over the region, bring high-pressure and a lot of cold air advection. The dominate weather regime still appears to be an Alberta High. With all the cold air advection, min temps are expected to crash. The northern part of our area is expected to see min temps in the mid to upper 20s and the marine influenced areas are expecting to see lows in the mid-30s. This could lead to a hard freeze in the northern areas and a light freeze in the southern areas.
After the area gets an taste of northern winter, things are expected to shift back to a zonal pattern. Winds generally turn back to the south by Wednesday and remaining that way through the end of the forecast. As the axis of the high-pressure steadily shifts to the east, it does open the region back up to the Gulf so temps will increase.