WINTER WEATHER ADVISORIES UP....

The biggest snowfall event (so far) this winter in my local area will unfold on Monday. Now advisories have been posted across the state of Iowa and into portions of Wisconsin and Illinois.

Winter Weather Advisories are posted through the day for the potential of 3 to 6 inches of snow. There will be some locally higher amounts, up to 8", possible where banding occurs Monday afternoon and evening.

Here's the hi-resolution NAM depicting the timing of the system -

Light snow will begin Monday morning from west to east. Heavier, steadier snow after 1 pm and fluffy snow will begin to pile up quickly.

Temperatures are also going to be pretty cold through the afternoon.

With temperatures in the teens snowfall ratios will check in around 20:1 so it will be a very fluffy snow - easy to shovel but many will have to shovel 3 to 6" by Monday night. Here's a wide view on the European through Monday night -

Zoomed in -

And here's a look at the GFS, NAM, and 3km NAM -- very good consistency on totals. Still some differences in the *exact* placement of the heaviest snow.

There may be an update to a Winter Storm Warning somewhere in eastern Iowa - likely south of Highway 20 where 7-8" of snow will be possible. There may be some periods of heavy snow, especially around the evening commute that could make for some difficult travel. Wind won't be a big factor, but visibility will likely be reduced at times due to the high snowfall rates.

Cold air will move in and the fresh snow cover will keep temperatures down on Tuesday:

Toward the middle and end of the week we will turn our eyes to a few more systems that will bring the potential for even more snow. More about that in the coming days...

Get your shovels ready!

RK