Today is forecast to be nearly the same temperature as yesterday.
Nowcast as of 12:04 am CST on November 21, 2009
Now
dense fog advisory in effect until 10 am CST this morning... Dense fog will continue to develop across the area through 130 am...with many visibilities already down to one half mile or less throughout the advisory area. The fog will continue to thicken...with visibilities expected to be near zero at times throughout the night and into the morning hours.
Forecast for Boone
Updated: 9:30 PM CST on November 20, 2009
Dense fog advisory in effect until 10 am CST Saturday...
Rest of Tonight
Mostly clear. Areas of dense fog after midnight. Visibility one quarter mile or less at times after midnight. Low around 30. South wind near 5 mph.
Saturday
Mostly sunny. Areas of dense fog in the morning. Visibility one quarter mile or less at times in the morning. High in the mid 50s. South wind near 10 mph increasing to 10 to 15 mph in the afternoon.
Partly cloudy in the evening then becoming mostly cloudy. Not as cool. Patchy drizzle after midnight. Low in the lower 40s. South wind 10 to 15 mph.
Sunday
Cloudy. A chance of light rain in the morning...then a slight chance of light rain in the afternoon. High in the lower 50s. Southeast wind around 10 mph. Chance of rain 30 percent.
... Dense fog advisory in effect until 10 am CST Saturday...
The National Weather Service in Des Moines has issued a dense fog advisory... which is in effect until 10 am CST Saturday.
Dense fog is expected to develop across the area late tonight and persist into the morning hours Saturday... as the area remains under the influence of an area of surface high pressure... situated over central Illinois. Visibilities have already dropped into the 2 to 4 mile range across portions of central Iowa... and are expected to continue to fall to one quarter mile or less by the early morning hours. The dense fog is expected to persist through the mid morning hours Saturday... before lifting with improving visibilities by 10 am.
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 low beam headlights... and leave plenty of distance ahead of you.
