IOWA WEATHER AND CROP REPORT 



575 



COMPARATIVE DATA FOR THE STATE— APRIL. 



TEAR 



Temperature 



I a 



Precipitation 



Number of 

 Days 



1S92 



1893 



1894 



1895 



1896 



1897 



1898 .- 



1899 



1900 



1901 



1902 



1903 



1904 



1905 



1906 



1907 



1908 



1909 



1910 



1911 



1912 



1913 



1914 



1915 



1916 



1917 



1918 



1919 



1920 



1921 



1922 



51.8 

 50.6 

 45.4 

 45.5 

 51.7 

 54.2 

 54.5 

 47.9 

 48.1 

 48.9 

 52.2 

 49.9 

 48.2 

 49.8 

 44.1 

 47.5 

 52.5 

 41.5 

 50.5 

 43.8 

 52.5 

 46.7 

 49.9 

 50.2 

 48.6 

 57.2 

 47.1 

 45.5 

 44.8 

 48.4 

 42.4 

 52.4 

 49.9 



0.38 

 0.59 

 2.43 

 1.24 

 0.55 

 0.28 

 2.35 

 2.22 

 0.27 

 0.56 

 0.43 

 0.66 

 0.40 

 0.74 

 1.52 

 0.63 

 0.53 

 0.24 

 0.67 

 0.83 

 0.10 

 1.33 

 0.78 

 1.12 

 0.37 

 0.05 

 1.13 

 2.C5 

 1.01 

 1.94 

 1.93 

 0.99 

 1.04 



T. indicates an amount too small 

 and less than .05 inch snowfall. 



to measure, or less than .005 inch rainfall 



report on Mississippi river flood of april, 1922, 

 dubuque district. 



By Thomas A. Blair, Meteorologist. 



Weather Bureau Office, Dubuque, Iowa, May 11, 1922. 



Warm weather during the latter half of March over the drainage area 

 of the Mississippi River above Dubuque, particularly in Minnesota and 

 Wisconsin, had resulted in considerable run-off, raising the Mississippi 

 and its tributaries above- Dubuque to rather high levels. There followed 

 during the first ten days of April frequent and moderately heavy rains, 

 attended by unusually warm weather. Although the snow cover was 

 thought to be less than the average, the result was a flood beginning at 

 La Crosse on April 12, and reaching its maximum stage at Dubuque on 

 the 21st, of a magnitude which has been equaled but three times in the 

 past 50 years. 



In the maximum stages reached this flood was very nearly the counter- 

 part of that of March and April, 1920, but in the manner of rise there was 

 considerable difference. In 1920 a rather rapid rise began immediately 



