• Dense Fog Advisory for McHenry County, Illinois
  • Dense Fog Advisory issued September 11 at 4:36AM CDT until September 11 at 9:00AM CDT by NWS
  • Effective: Tuesday, September 11, 2018 at 4:36 a.m.
  • Expires: Tuesday, September 11, 2018 at 9 a.m.

  • ...Areas of Dense Fog Early this Morning...
    ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT /10 AM EDT/ THIS
    MORNING...
    The National Weather Service in Chicago has issued a Dense Fog
    Advisory, which is in effect until 9 AM CDT /10 AM EDT/ this
    morning.
    * VISIBILITY...One quarter mile or less.
    * IMPACTS...Low visibility will create hazardous travel
    conditions. Visibility may change suddenly over very short
    distances.