Dense Freezing Fog warning – 1/18/2010

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National Weather Service statement:

URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTHERN INDIANA
108 AM EST MON JAN 18 2010

…DENSE FREEZING FOG AGAIN OVERNIGHT…

.LIGHT WINDS COUPLED WITH VERY MOIST LOWER LEVELS WILL LEAD TO AREAS OF DENSE FREEZING FOG THIS MORNING ACROSS SOUTHWEST LOWER
MICHIGAN…NORTHERN INDIANA AND NORTHWEST OHIO. A FREEZING FOG ADVISORY REMAINS IN EFFECT FOR THE ENTIRE AREA. VISIBILITIES WITHIN THE ADVISORY AREA WILL DROP TO ONE QUARTER MILE OR LESS WITH SOME LOCATIONS NEAR ZERO POSSIBLE. WITH TEMPERATURES BELOW FREEZING… MOISTURE FROM THE FOG WILL FREEZE ON SURFACES RESULTING IN A THIN LAYER OF ICE… CREATING SLIPPERY SPOTS…ESPECIALLY ON BRIDGES AND OVERPASSES…SIDEWALKS AND UNTREATED ROADS. CONDITIONS WILL SLOWLY IMPROVE BY LATE THIS MORNING.

[…]

108 AM EST MON JAN 18 2010 /1208 AM CST MON JAN 18 2010/

…FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST /9 AM CST/ THIS MORNING…

A FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST /9 AM CST/ THIS MORNING.

* TIMING…AREAS OF DENSE FREEZING FOG WILL CONTINUE THROUGH LATE THIS MORNING.

* VISIBILITY…EXPECT VISIBILITIES TO DROP TO ONE QUARTER OF A MILE OR LESS ACROSS MANY LOCATIONS.

* IMPACTS…HAZARDOUS DRIVING CONDITIONS WILL BE COMMON DUE TO LOW AND RAPIDLY CHANGING VISIBILITIES. SOME ROADWAYS… ESPECIALLY
BRIDGES…OVERPASSES…AND LESSER TRAVELED UNTREATED ROADS WILL ALSO DEVELOP A THIN LAYER OF ICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FREEZING FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING…SLOW DOWN…
USE YOUR LOW BEAM HEADLIGHTS…AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU. ALSO…BE ALERT FOR ICE ON ROADS AND SIDEWALKS CAUSING
SLIPPERY ROADS.

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