Dense Fog Advisory expanded to include more of northern Illinois

In a similar fashion to the past couple of mornings, the threat for Dense Fog exists. 

A DENSE FOG ADVISORY is in place for Winnebago, Boone, Ogle, Lee, Dekalb, Jo-Daviess, Carroll, Stephenson, and Whiteside County in N. Illinois as well as Green and Rock County up in S. Wisconsin until 10AM. Up until then, visibility will likely be sitting at a 1/4 mile or less. 

If you plan to be out and about, take it slow and travel with extra caution. Also, be on the lookout for slick spots, especially on back roads, bridges, and overpasses. Temperatures ahead of the morning commute are sitting either at or below the 32°, which would make for freezing fog. Again, freezing fog is consisted of "supercooled" water droplets that can freeze instantly on any exposed surfaces.

With winds remaining light for much of the morning, fog may linger into the mid-day hours. Once the fog has fully lifted, the rest of Monday features a mostly cloudy sky with highs in the upper 30s. 

Our next system is then scheduled to arrive overnight into Tuesday in the form of a clipper system. With it will be a chance for a few scattered light rain showers Monday night, followed by a light mix of rain and wet snow throughout the day Tuesday. We shouldn't expect accumulations with this upcoming chance and with road temperatures being too warm, travel impacts will be low. 

 

Quickly behind the clipper system will be a ridge of high pressure which will help dry out the forecast for Wednesday. With winds being more out of the south and southwest, expect high to peak in the upper 30s and for some low 40s. This spike in temperatures is very well expected to continue into Thursday as we await the arrival of our next cold front.