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Including the cities of...Alton...Belleville...Cahokia...
1015 PM CST Sun Feb 19 2017
...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST MONDAY...
The National Weather Service in Saint Louis has issued a Dense
Fog Advisory...which is in effect until 9 AM CST Monday.
* TIMING...Fog will develop and expand becoming dense late
tonight and continuing through early Monday morning.
* VISIBILITIES...Visibilities of one-quarter mile or less at
times are expected.
* IMPACTS...Rapid changes in visibility will cause hazardous
A Dense Fog Advisory is issued when dense fog will substantially
reduce visibilities, to one-quarter mile or less, resulting in
hazardous driving conditions in many areas. Motorists are advised
to use caution and slow down, as objects on and near roadways
will be seen only at close range.