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Weather seen impacting crop ratings

08/16/2010 @ 8:59am

Highlighting weekend weather in the Midwest was some very welcome, very beneficial, and very needed rains in a good part of Illinois. 

Coming into the weekend that was a state that had seen limited rain as of late and had seen a lot of hot temperatures, but roughly the western three-fourths of Illinois had excellent coverage of better than a half inch of rain and localized amounts that exceeded 1.50 inches. Much of the northwestern two-thirds of Missouri also saw similar rains that also had to be considered as beneficial to crops. 

Getting short-changed on weekend rainfall was clearly the rest of Illinois, far northwestern Ohio, and basically all of Michigan and Indiana where rainfall for the most part was non-existent. 

Seven of the major reporting stations that I track in Michigan and Indiana have recorded less than 0.75 inches of rain here in the first half of August, and with temperatures in that area running five to six degrees warmer than normal in that period (locally even warmer than that; at last check Indianapolis was running just over seven degrees above normal for the month), crops in those areas remain under stress and we should see especially soybean ratings in Michigan and Indiana turn lower in this afternoon's ratings. 

The northern Delta also saw very little rain over the weekend and thus is another candidate for lower crop ratings this afternoon. The other big weekend weather story was the arrival of cooler and drier air in the Midwest on Sunday. Highs on Sunday were only in the upper 70s in the far northwestern Corn Belt, and for the first time since the opening couple days of July we saw the dew point drop below the 60 degree mark at Des Moines. (It looks like the string of days with lows above 60 at Des Moines is going to continue though; June 3 was the last time that location had a sub-60 degree low). 

There will be a couple rain systems in the Midwest this week (centered around tomorrow and Friday), and both systems are going to favor the western Corn Belt versus the east with the biggest rain totals. With 6-10 day rainfall looking below normal across the Midwest and with temperatures in that period forecast to warm back above normal, this will continue to be a rather poor finish to the summer growing season for crops in Indiana, Michigan, and parts of nearby areas.

Freese-Notis Weather/Weather Trades, Inc. Des Moines, Iowa Copyright 2010 - All Rights Reserved 

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