According to an early morning advisory from the National Weather
Service in Lincoln, light winds and increasing low-level moisture
flowing northward behind an advancing warm front allowed widespread
fog to develop across central Illinois. The lowest visibilities of
one-quarter of a mile or less were likely to be focused along and
west of Interstate 55.
The NWS issued a dense fog advisory in
effect until 10 a.m. Tuesday for the counties of Knox, Stark,
Peoria, Marshall, Woodford, Fulton, Tazewell, McLean, Schuyler,
Mason, Logan, DeWitt, Cass, Menard, Scott, Morgan, Sangamon,
Christian and Macon, including the cities of Galesburg, Peoria,
Bloomington, Normal, Havana, Lincoln, Jacksonville, Springfield,
Taylorville and Decatur.
Timing: Fog developing across west-central Illinois was
expected to become dense between 4 and 6 a.m. The dense fog is
expected to persist through midmorning before gradually dissipating
by 10 a.m.
Visibility: Widespread visibilities of one-quarter of a mile
or less were expected.
[to top of second column]
Impacts: Motorists are advised to drive with caution and
to plan on extra time to arrive at their destinations for the
Precautionary, preparedness actions: A dense fog advisory
means visibilities will frequently be reduced to less than
one-quarter mile. If driving, slow down, use your headlights and
leave plenty of distance ahead of you.
For updates, check http://www.crh.noaa.gov/ilx/.
[Text from National Weather
Service, Lincoln office]