Tuesday - Late morning update

What a nice snowfall across the region !!! It wasn't a lot ... generally around 1 inch, but still a real pretty sight. Actually I was a bit surprised to see that we had a solid inch in Louisville (with even a few spots a little more north of the metro), simply because of how fast the low layers of the atmosphere moistened up earlier this morning. I got home from work at around 2am and we still had a mid deck with dew points in the single numbers, 2 hours later with a sfc temp of 38 degrees I looked outside and it was already snowing ! That's impressive. Bottom line, snow began about 2 hours earlier than expected so instead of a dusting to less than 1 inch around the area, we picked up a half inch to around 1 inch - and as mentioned, a few spots north of louisville, a little more. (CLICK ON ABOVE LINK FOR SNOW AMOUNTS)

Alright, looking ahead... another fast moving arctic blast is on the way.. Shortwave energy digging south towards the Ohio Valley and its associated sfc cold front will clip through here Wednesday night. Patchy light snow and/or flurries will accompany this system Wedenesday night into Thursday. Progged H9 temps for Thursday AM - likely to be anywhere from -16 to -19C !!! and saturated -- more than cold enough for ice crystal generation and as a result some flurries or patchy light snow. Temperatures will be very cold on Thursday and hold in the teens with single numbers likely Thursday night / Friday morning.

The next system then starts to affect us later Friday night into Saturday. This system - like the ones before it, will cut north of us. A southerly flow and strong WAA created by the approaching system will lead to another round of precipitation. At this time it looks likely this precip will be wintry again and begin as snow or a sleet/snow mix - quickly race through and may end briefly as some drizzle Saturday morning. Accumulations will be possible but also quite light again.

A pattern shift is coming, This weekend into next week, a mean trough will be developing across the western US witha flat ridge across the eastern US. This will bring a return to the milder weather across the Ohio Valley as progged H85 temps climb anywhere from +6 to +10C. Temperatures will respond nicely and climb back into the 50s (possibly even 60s) next week.