Areas of fog and reduced visibilities down to 2 miles will continue across portions of west-central and southern Illinois. Observation sites along and east of the Mississippi River have reported improvements to visibility over the last few hours and this trend is expected to continue through the late afternoon hours as winds begin to increase across the region.
Forecast for Calhoun
Updated: 3:42 PM CST on December 22, 2009
Flood Watch in effect from Wednesday afternoon through Thursday afternoon...
Tonight
Cloudy. Chance of rain showers and patchy drizzle in the evening...then rain showers likely and scattered thunderstorms after midnight. Near steady temperature around 40. East wind 10 to 15 mph. Chance of measurable precipitation 70 percent.
Wednesday
Occasional rain and scattered thunderstorms. High in the mid 40s. East wind 10 to 20 mph. Chance of rain near 100 percent.
Breezy. Occasional showers and scattered thunderstorms. Storms may produce heavy rainfall. Near steady temperature in the lower 40s. Southeast wind 15 to 20 mph with gusts to around 30 mph. Chance of rain near 100 percent.
Thursday
Breezy. Occasional rain and scattered thunderstorms. Storms may produce heavy rainfall. High in the mid 40s. Southeast wind 15 to 25 mph. Chance of rain near 100 percent.
Blustery...colder...cloudy. Chance of rain in the evening...then chance of rain...snow and sleet after midnight. Low around 30. Southeast wind 15 to 25 mph in the evening shifting to the southwest 15 to 20 mph after midnight. Chance of precipitation 50 percent.
Christmas Day
Windy...colder. Cloudy with a 40 percent chance of snow showers. Near steady temperature in the lower 30s.
Friday Night
Blustery...colder. Mostly cloudy with a 30 percent chance of snow showers. Low around 20.
Saturday
Mostly cloudy with a 30 percent chance of snow showers. High in the upper 20s.
Saturday Night
Mostly cloudy. Chance of flurries. Low around 16.
Sunday
Partly sunny. Chance of flurries. High in the upper 20s.
Sunday Night through Tuesday
Partly cloudy. Low around 19. High in the lower 30s.
... Flood Watch in effect from Wednesday afternoon through Thursday afternoon...
The National Weather Service in St Louis has issued a
* Flood Watch for portions of Illinois and Missouri... including the following counties... in Illinois... Adams IL... Bond IL... Brown IL... Calhoun IL... Clinton IL... Fayette IL... Greene IL... Jersey IL... Macoupin IL... Madison IL... Marion IL... Monroe IL... Montgomery IL... Pike IL... Randolph IL... St. Clair IL and Washington IL. In Missouri... Audrain... Crawford... Franklin... Gasconade... Iron... Jefferson... Knox... Lewis... Lincoln... Madison... Marion... Monroe... Montgomery... Pike... Ralls... Reynolds... Shelby... St. Charles... St. Francois... St. Louis... St. Louis city... Ste. Genevieve... Warren and Washington.
* From Wednesday afternoon through Thursday afternoon
* flooding is likely because of heavy rainfall from widespread showers and scattered thunderstorms the next two days. Many areas will see between 2 and 3 inches of rain by late Thursday with locally higher amounts.
* Many streams and some rivers across the area may exceed bankfull causing flooding in low lying areas.
Precautionary/preparedness actions...
A Flood Watch means that flooding is possible but not imminent in the watch area. People in the watch area are urged to check on preparedness requirements... especially if you have interests along area rivers. Stay informed... and be ready for action if flooding is observed or if a Flood Warning is issued.