Some patchy dense fog and damp conditions Chicago-area-wide today

Update 9:30AM CST…

As the milder southerly winds flow over the ground, the snow cover is shrinking across northeast Illinois and northwest Indiana, but the moisture from the evaporating/melting snow will allow the fog and low clouds to persist well into the afternoon.  Temperatures will slowly rise into the 0s, but damp conditions will prevail with rather poor visibility, wet streets and puddling of water cutting back on traction, and adding to the probability of accidents/falls. 

Patches of dense fog with visibility lowering to a quarter-mile or less will likely continue well into the afternoon across northeast Illinois and northwest Indiana. Dense Fog Advisories are in effect for many areas until mid-afternoon.

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CHICAGO — As southerly winds continue to bring milder air into our area over the snow cover, temperatures and dew-points at ground level are close, causing patchy dense fog early this Wednesday morning.

Lowest visibility seems to be to the north in counties along the Illinois-Wisconsin state line where Dense Fog Advisories have been issued.

Also temperatures are just above freezing, but pavement temperatures may still be below freezing, causing slick spots where condensation occurs.

So if you’re traveling or spend time outdoors this morning, be alert to quick changes in visibility and potentially slippery conditions.

Maps depicting current temperatures and visibility are below…

Visibility (tenths of a mile)…

Temperatures…