TWENTIETH ANNUAL YEAR BOOK— PART VIII 703 



September 18-19, 1874 3.70 Inchea 



September S-9, 1875 5.40 " 



Julv 4-5, 1876 - - - 4.55 " 



September 5. 1876 3.40 " 



July 6-7, 1879 3.39 " 



June 3-4, 1880 3.03 " 



September 25, 1880 3.38 " 



July 10. 1881 — - 3.42 " 



September 26, 1881 4.01 " 



August 23-24, 1885 -3.38 " 



May 9-10, 1890 3.18 " 



June 2-3, 1890 3.04 " 



June 16, 1892 3.48 " 



July 26, 189G 4.82 " 



September 13-14, 190O— 3.25 " 



August 10-11, 1911 3.75 " 



August 18-19, 1912 5.23 " 



August 31-September 1, 1914 3.18 " 



September 14-15, 1914 3.38 " 



September 25-26, 1915 4.79 " 



August 16-17, 1918 5.22 " 



July 9. 1919 3.87 " 



The* following table gives the heaviest rainfall in periods of 5 minutes, 

 10 minutes, 15 minutes, 30 minutes, one hour, and two hours for a num- 

 ber of storms. It shows how much heavier was the rainfall on July 9, 

 1919, within a one hour period, than during any storm at Dubuque in re- 

 cent years: 



In 5 In 10 In 15 In 30 In 1 In 2 In 24 



Storm of— Min. Min. Min. Min. Hr. Hrs. Hre. 



August 10-11, 1911 32 .52 .62 .81 1.12 1.97 3.75 



August 18-19, 1912 .50 .71 .94 1.46 1.95 2.62 5.23 



August 31-September 1, 1914 .41 .72 1.03 1.30 1.68 1.96 3.18 



September 14-15, 1914 .34 .51 .58 .73 .85 1.26 3.38 



September 25-26, 1915 .34 .46 .53 .68 1.27 2.23 4.79 



August 16-17, 1918 .35 .62 .79 1.37 2.10 2.96 5.22 



July 9, 1919 - .80 1.20 1.52 2.23 2.70 3.03 3.87 



From the record of "Excessive" precipitation at Dubuque the following 

 data are taken: On July 4, 1S76, 4.55 inches fell in two hours, five minutes. 

 On July 7, 1891, 1.87 inches fell in 27 minutes. On August 18, 1912, 1.81 

 inches fell in 43 minutes. On August 31, 1914, 1.23 inches fell in 20 

 minutes. On September 26, 1915, 2.57 inches fell in two hours, 27 minutes. 

 On August 16-17, 1918, 2.48 inches fell in one hour, 18 minutes. On July 

 9, 1919, 2.65 inches fell in 45 minutes. 



AUGUST. 



August was a pleasant month with the temperature near the normal. 

 There were no protracted hot spells and after a short period of hot 

 weather during the first week, the rest of the month was generally below 

 the normal. Temperatures exceeding 100° occurred at only a few stations 

 and after the first week the maxima were below 90° over most of the 

 State. The lowest temperature of the month occurred on the last day over 

 practically the entire State and three stations reported light frost. The 

 weather was favorable for the maturing of crops, harvesting and threshing 

 but too dry for plowing and seeding and meadows and pastures were suf- 

 fering for rain and turning brown at the close of the month, except, in a 

 few small areas. 



Like July, the precipitation was deficient, except a few small areas, the 

 principal one being a narrow strip in the east-central district, and the dis- 

 tribution uneven. Most of the precipitation occurred during the first half 

 of the month and was sufficient to assure a good corn crop, there being 

 no heavy downpours and all was taken up by the soil. 



