Ample rainfall Thursday-Thursday night could bring relief to dry conditions

Widespread substantial rains expected later this week on Thursday and Thursday night will provide relief to what has become a dry fall and winter across central Kentucky and southern Indiana.  For our three largest cities, Louisville, Lexington, and Bowling Green, practically every month has been drier than normal beginning in September.  Only a very wet last two weeks in November prevented more widespread drought.  The image below shows how the Lower Ohio Valley and, indeed, much of the Gulf Coast has had below normal rain from September through January.  For central and western Kentucky for example, precipitation deficits of 5 to 8 inches have developed over this period. 



The graph below shows accumulated precipitation for 2011 for Louisville International Airport  (through February 21).  On the 21st of February Louisville's airport was over 2.5 inches below normal for this time of year. 



The graph below shows that all three airports have received much less than normal precipitation since December 1 and January 1:


Precipitation deficits through February 22

  Louisville Int'l. Airport Lexington Bowling Green
Precipitation since January 1st (Normal)

3.10 in

5.64 in

4.23 in

5.71 in

3.66 in

7.18 in

Precipitation since Dec 1st (Normal)

4.76 in

9.33 in

6.72 in

9.74 in

5.99 in

12.24 in


Widespread rain is definitely on tap for the Tennessee and the Ohio Valleys.  This is a 3-day rainfall forecast from the Hydrological Prediction Center ending Friday evening.  This image is from a forecast made Tuesday afternoon.



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