April Climate Review for Chicago and Rockford

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
830 AM CDT TUE MAY 01 2007

...A LOOK BACK AT THE CLIMATE FOR THE MONTH OF APRIL...

AT CHICAGO...THE AVERAGE HIGH TEMPERATURE WAS 56.5 DEGREES WHICH WAS
1.5 DEGREES BELOW NORMAL.  THE AVERAGE LOW TEMPERATURE WAS 37.0
DEGREES WHICH IS 0.6 DEGREES BELOW NORMAL.  THE AVERAGE TEMPERATURE
FOR THE MONTH WAS 46.8 DEGREES WHICH IS 1.1 DEGREES BELOW NORMAL.
3.49 INCHES OF PRECIPITATION FELL WHICH IS 0.19 INCHES BELOW
NORMAL.  3.0 INCHES OF SNOW FELL WHICH IS 1.4 INCHES ABOVE NORMAL
AND RANKED AS THE 16TH SNOWIEST APRIL IN CHICAGOS HISTORY DATING
BACK TO 1885.

ONE RECORD WAS SET AND ANOTHER WAS TIED IN THE MONTH OF APRIL FOR
CHICAGO.  THE TIED RECORD OCCURRED ON THE 7TH WHEN THE MAXIMUM
TEMPERATURE ONLY REACHED 32 DEGREES.  THIS TIED THE PREVIOUS RECORD
WHICH WAS SET IN 1936.  THE LONE RECORD TO BE BROKEN OCCURRED ON THE
11TH WHEN 3.0 INCHES OF SNOW FELL.  THIS BROKE THE PREVIOUS RECORD
OF 2.3 INCHES SET IN 1957.

AT ROCKFORD...THE AVERAGE HIGH TEMPERATURE WAS 57.7 DEGREES WHICH
WAS 1.4 DEGREES BELOW NORMAL.  THE AVERAGE LOW TEMPERATURE WAS 36.8
DEGREES WHICH IS EXACTLY NORMAL.  THE AVERAGE TEMPERATURE FOR THE
MONTH WAS 47.3 DEGREES WHICH IS 0.6 DEGREES BELOW NORMAL.  2.73
INCHES OF PRECIPITATION FELL WHICH IS 0.89 INCHES BELOW NORMAL.  2.9
INCHES OF SNOW FELL WHICH IS 1.5 INCHES ABOVE NORMAL AND RANKS AS
THE 16TH SNOWIEST APRIL IN ROCKFORDS HISTORY DATING BACK TO 1906.

TWO RECORDS WERE SET DURING THE MONTH OF APRIL FOR ROCKFORD...BOTH
SNOWFALL RECORDS.  THE FIRST RECORD WAS BROKEN ON THE 11TH WHEN 1.9
INCHES OF SNOW FELL.  THIS BROKE THE PREVIOUS RECORD OF 0.8 INCHES
WHICH WAS SET IN 1973.  THE SECOND RECORD WAS BROKEN ON THE 12TH
WHEN 1.0 INCH OF SNOW FELL.  THIS BROKE THE PREVIOUS RECORD OF 0.8
INCHES WHICH WAS SET IN 1962.

$$

HALBACH


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