Significant Weather Observer Program

 WEEKLY WEATHER DISCUSSION

written: 3/18/15 

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

Temperatures will be on a rollercoaster ride of ups and downs over the next week, with the overall trend being slightly below normal for this time of year.  For reference, normal temperatures are currently in the lower 50s, but will rise into the middle to upper 50s by the end of next week. 

A deep upper low over Hudson Bay will drop into southeastern Canada this weekend, pushing a strong cold front through Illinois on Saturday, March 21st.  Ahead of the boundary, sunshine and southwesterly winds will push temps well into the 50s on Friday, then into the lower to middle 60s on Saturday.  The front will pass through the region completely dry on Saturday, followed by a sharp drop in temperatures early next week.  The coolest day looks to be Monday, March 23rd when overnight lows dip into the 20s and afternoon highs remain in the 40s.  A weak weather disturbance tracking from the Northern Plains into the southern Great Lakes will bring a period of light precipitation Sunday night into Monday.  Temperatures will likely be cool enough to support a period of light snow late Sunday night into Monday morning: however, little or no accumulation is expected at this time.  Once this system passes, cool conditions will persist through Tuesday before brief upper ridging brings a temporary warm-up back into the 60s by Wednesday, March 25th.  After that, medium range computer models are showing the ridge being replaced by a trough of low pressure and cooler conditions by the end of next week. 

 

Here is the latest 8-14 day temperature outlook from the Climate Prediction Center (CPC) covering the period March 26- April 1: 

  

 

 

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


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