LOCAL4CAST for FRIDAY, NOVEMBER 17, 2017 by TRAVIS KLANECKY
A mild and moist air mass has moved in from the south overnight, leading to a rather mild start to the morning. From about the Tri-Cities south and east, temperatures are beginning the day in the 50s. These areas are seeing some patchy drizzle, fog, and some cloud cover. To the north and west, there are some 30s where there is some clearing. As we go through the day, there will be some partial clearing, but I'm still banking on partly to mostly cloudy skies in most areas. Temperatures will be seasonably mild, but cooler the farther north you go as a cold front passes through the area. Look for highs to range from the upper 40s north up north to the mid 60s south and southeast. Around the Tri-Cities, we should top out in the mid 50s.
As we head into tonight, a disturbance will bring us our only chance of moisture over the next week or so. A decent chance of light to moderate rain is possible. As we get later into the night, it may get cold enough to see a change over to a mix or even all snow. The best chance of this happening will be north of Interstate 80. Snowfall totals will likely be very light well under an inch, but if a band of snow were to set up, we may see somebody get over an inch as the heavier rate of snowfall overcomes warm ground temperatures. As we go through the night, winds out of the north and eventually northwest will pick up. By midnight and thereafter, they will be up into the 20 to 30 mph range with gusts that could be up over 35 mph. Look for lows in the 30s.
By sunrise Saturday, the precipitation will be all gone, but don't be surprised if you look out your window and see a skiff of snow on the ground. It will be a sunny day, but a very blustery day with highs in the 40s. Winds will continue to be out of the northwest at 20 to 30 mph with gusts up to 40 mph. Those winds will die back Saturday night. With clear skies, temperatures will fall back into the upper 10s and low to mid 20s. Sunday will feature some good recovery as winds will turn back out of the south at 10 to 20 mph and sunshine sticks around. Look for widespread highs in the 50s.
Monday will be warmer with mostly sunny skies. Highs will climb into the upper 50s and lower 60s. A cold front will move through late in the day, but with little fanfare. It will bring in a cooler day for Tuesday. Under partly cloudy skies, we'll see highs mostly in the 40s...perhaps a few low 50s southwest. It will be breezy again on Tuesday.
Wednesday will continue to be quiet, which is good for travel. After a cold start in the 10s and 20s, we'll see temperatures in the 40s east and 50s west.
The biggest question going into Thanksgiving Thursday is how far east will the ridge out west build into the Great Plains. It will be a battle between cold air to the east and warmer air west. We should at least be into the 50s on Thursday, but possibly into the 60s. The general trend though will be for warmer temperatures the farther west that you go.