![]() NWS Precipitation Image overlays are provided by the National Weather Service. USGS rain-gage data shown in the table are available at Water Data for the Nation : Current Illinois Precipitation “ – – ” Parameter not determined, usually due to missing data.The "no data" icon is the result of an NWISWeb status code: The colored portion of the icon will represent the precipitation amount for that time interval. Half colored icons designate gage data that appears to be logging correctly but is over 1 hour and 15 minutes older than the NWISWeb time stamp at the top of the Rainfall page.Hourly and Daily values are calculated from the last time a gage value was updated, which is not necessarily the time this web page was updated. * For precipitation values less than 0.01 inches, the USGS gage symbol is white and the NWS overlay is transparent. Legend colors apply to both USGS gage and National Weather Service precipitation overlays (at full opacity). The data accuracy and availability can be compromised due to equipment failure, power loss, equipment defects, loss of calibration, or Internet/radio communication equipment failure of equipment provided by others. The FC District does not warranty, guarantee, or certify the accuracy of the rainfall data. The above information is presented to provide an indication of potential for flooding based on experience and review of limited historic rainfall data. The Contra Costa County Flood Control & Water Conservation District (FC District) is not responsible for predicting flooding, warning property ow ners of imminent flooding, or ordering evacuations. Station 86 - CCC Corporation Yard, Brentwood.This schedule replaces the previous update cycle, which limited hourly updates to the 3h, 6h, 12h, and 24h mosaics, while 48h and 72h maps were generated once daily. Precipitation in inches during the previous 1 hour 3 hours 6 hours 12 hours 24 hours 2 days 7 days Alexander County 07022000 Mississippi River at Thebes, IL 02/09 21:00 CST 0 0 0 0 0.94 3.05 3.07 Bond County 384633089295600 RAIN GAGE AT SHOAL CREEK NR PIERRON, IL 02/09 20:30 CST 0 0 0 0.01 0.45 0. ![]() All other mosaics are now updated hourly, including the 48h and 72h maps. Data Update Cycle: The 1-hr mosaic is updated every 5 min (approx).
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