Significant Weather Observer Program

 WEEKLY WEATHER DISCUSSION

written: 2/6/15 

Here is the latest U.S. Hazards Outlook issued by the Climate Prediction Center (CPC): http://www.cpc.ncep.noaa.gov/products/predictions/threats/hazards_d3_7_contours.png

Above normal temperatures will prevail for the next several days before a sharp drop-off in temperatures occurs by the middle and end of next week.  Current upper air analysis shows a large ridge of high pressure over the Rockies into the Plains, with a deep trough of low pressure over New England.  As the ridge builds eastward, warmer conditions will develop across central Illinois this weekend.  High temperatures will range from the upper 30s from the Peoria and Bloomington areas northward to the lower 50s south of I-70.  With southerly winds and a good deal of sunshine, much of the existing snow-cover along and south of the I-74 corridor will likely melt this weekend.  An upper-level disturbance will temporarily flatten the ridge early next week, bringing a few rain showers on Sunday, February 8th followed by cooler conditions on Monday.  After one more mild and dry day on Tuesday, another upper disturbance will carve a significant trough along and east of the Mississippi River later next week.  While most of the precipitation associated with this feature will remain to the north across the Great Lakes, it will send a strong cold front through Illinois.  As a result, a return to below normal temperatures with highs only in the 20s will occur by the middle and end of next week.                

NOTE: This weather discussion will be updated weekly (usually on Wednesday or Thursday) 


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