657 WWUS73 KLSX 190841 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 341 AM CDT Sat May 19 2018 MOZ018-019-026-027-034-035-041-042-047>051-059-072-191400- /O.NEW.KLSX.FG.Y.0008.180519T0841Z-180519T1400Z/ Audrain MO-Boone MO-Callaway MO-Cole MO-Crawford MO-Gasconade MO- Knox MO-Lewis MO-Marion MO-Moniteau MO-Monroe MO-Montgomery MO- Osage MO-Ralls MO-Shelby MO- Including the cities of Columbia, Fulton, Hannibal, Jefferson City, and Mexico 341 AM CDT Sat May 19 2018 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... The National Weather Service in Saint Louis has issued a Dense Fog Advisory, which is in effect until 9 AM CDT this morning. * TIMING...Dense fog is expected until 9 AM this morning. * VISIBILITIES...Visibilities of one-quarter mile or less at times are expected. * IMPACTS...Rapid changes in visibility will cause hazardous driving conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ Carney