592 



TWENTY-THIRD ANNUAL YEAR BOOK— PART VIII 



City, 71; Davenport, 73; Des Moines, 69; Dubuque, 63; Keokuk, 71; Sioux 

 City, 73; Omaha, Neb., 77. 



Wind. The prevailing direction of the wind was from the south. The 

 highest velocity reported from a regular Weather Bureau station was at 

 the rate of 33 miles per hour, from the north, at Sioux City, on the 8th. 



Rivers. Low stages prevailed on all rivers with very little fluctuation, 

 but with a falling tendency prevailing. Only once in September has a 

 lower mean stage been recorded at Dubuque. 



Miscellaneous Phenomena. Fog: 1st, 2d, 3d, 4th, 14th, 15th, 18th, 19th, 

 20th, 21st, 22d, 23d, 26th, 27th, 28th. Frost light: 10th, 11th, 16th, 25th, 

 26th, 27th. Hail: 8th, 17th. Halos: 1st, 10th, 15th. Rainbow: 7th. 

 Thunderstorms: 1st, 2d, 4th, 6th, 7th, 8th, 9th, 10th, 13th, 15th, 16th, 17th, 

 18th, 19th, 29th, 30th. 



COMPARATIVE DATA FOR THE STATE SEPTEMBER. 



TEAR 



1891 



1892 



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 



59.3 

 67.3 

 64.7 

 64.7 

 65.1 

 66.8 

 58.5 

 70.9 

 65.3 

 62.5 

 64.4 

 63.3 

 59.1 

 60.8 

 64.0 

 65.8 

 67.2 

 62.8 

 67.9 

 62.4 

 63.2 

 65.8 

 62.1 

 64.5 

 64.5 

 63.7 

 62.5 

 62.6 

 58.6 

 67.5 

 66.5 

 67.3 

 67.1 



—4.1 



+3.9 



+1.3 



+1.3 



+1.7 



+3.4 



—4.9 



+7.5 



+ 1.9 



—0.9 



+1.0 



—0.1 



—4.3 



—2. 



+0.6 



+2.4 



+3.8 



—0.6 



+4.5 



—1.0 



—0.2 



+2.4 



—1.3 



+1.1 



+1.1 



+0.3 



—0.9 



—0.8 



—4.8 



+4.1 



+3.1 



+3.9 



+3.7 



96 



104 



I 99 



102 



100 



103 



j 95 



106 



99 



104 



I 99 



|102 



3 | 88 



6 94 



96 

 100 



98 

 !>S 

 94 

 99 



in.3 

 104 



107 



4.85 



3.60 



4.15 



5.49 



7.43 



7.43 



9.96 



5.88 



8.45 



4.32 



8.82 



13.62 



10.41 



8.79 



8.33 



13.18 



11.10 



6.06 



3.46 



7.34 



7.43 



13.73 



10.12 



7.44 



16.24 



12.45 



9.71 



8.68 



4.62 



11.82 



7.21 



11.95 



4.34 



1.36 

 0.13 

 0.16 

 0.74 

 0.67 

 0.85 

 1.82 

 0.00 

 0.41 

 T. 

 2.48 

 1.71 

 1.65 

 1.42 

 0.09 

 0.50 

 0.64 

 I 1.38 

 0.25 

 1.39 

 1.18 

 1.19 

 0.28 

 0.45 

 2.48 

 2.88 

 1.45 

 0.39 

 0.48 

 1.49 

 0.69 

 1.72 

 0.31 



T. indicates nn amount too small to measure, or less than .005 inch precipita- 

 tion and less than .05 inch snowfall. 



