Rain showers moving in tonight will be the leading edge of the big Arctic blast that we've been talking about for quite some time. Showers will arrive in a couple waves overnight but we should see a "lull" in precipitation during the AM rush time frame. By late morning snow showers move in and they may mix with rain at times through the afternoon as we reach into the upper 30s. Accumulations will be slim to none during this period due to warm air and ground temperatures but there is a chance for snow to stick briefly on roadways during the heavier snow showers.
Temperatures drop below freezing in the evening on Monday and that's when we'll start to pick up accumulation in snow showers. Travel issues due to snow on untreated roads and low visibility within these windy snow showers are possible. Snow showers continue through the day on Tuesday too, especially during the morning and again in the afternoon when some of these could be a little heavier due to instability in the atmosphere. Again, travel issues will be possible inside of these snow showers on Tuesday. This will all wrap up Wednesday morning.
A word of caution: These snow amounts will be splotchy. Since these snow showers will be scattered not everyone will get the same amount. Your friend across town may see 1-2" in their backyard while you get only a half inch in yours. Don't bank on getting the 1-2", that's a maximum if you're lucky (or unlucky depending on how you look at it) enough to get under some of the heaviest snow showers. The 4km NAM model (right) depicts very well how splotchy these amounts may be and shows the general trend of slightly higher amounts over the elevations of Eastern Kentucky.
When it comes to temperatures, most of us won't make it out of the 20s on Tuesday with most areas in the teens and lower 20s for highs on Wednesday. Wednesday morning will easily be in the teens, but it's Thursday morning that looks the coldest. We're pegged at 12° that morning for the low temperature in Louisville, but folks outside the city will certainly see a few degrees lower. Wind chills near or below zero Thursday morning appear likely. Keep that in mind as you're planning the kids' wardrobe choices for school this week.
After this long-duration snow shower and cold event ends by mid week, our attention will shift to a system that may bring another round of wintry weather the day after Valentines Day. More on that and this week's Arctic blast in the video below!