IOWA WEATHER AND CROP REPORT 589 



Precipitation. The average precipitation for the State as shown by the 

 records of 102 stations, was 3.06 inches, or 0.62 inch less than the normal. 

 By divisions the averages were as follows: Northern, 2.50 inches, or 0.98 

 inch less than the normal; Central, 2.82 inches, or 0.95 inch less than the 

 normal; Southern, 3.87 inches, or 0.09 inch more than the normal. The 

 greatest amount, 9.80 inches, occurred at Atlantic, and the least, 0.33 inch 

 occurred at Le Claire. The greatest amount in 24 consecutive hours, 5.83 

 inches, occurred at Atlantic on the 30th. 



Humidity. The average relative humidity for the State at 7 a. m., was 

 80 per cent, and at 7 p. m., was 60 per cent. The mean for the month 

 was 70 per cent, or 2 per cent less than the normal. The highest monthly 

 mean was 74 per cent at Charles City, and the lowest was 64 per cent at 

 Davenport. 



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

 highest velocity reported from a regular Weather Bureau Station was 

 43 miles per hour at Sioux City, from the north on the 17th. 



Sunshine and Cloudiness. The average per cent of the possible amount 

 of sunshine was 71, or 1 per cent more than the normal. The per cent 

 of the possible amount at the regular Weather Bureau Stations was as 

 follows: Charles City, 73; Davenport, 73; Des Moines, 67; Dubuque, 60; 

 Keokuk, 73; Sioux City, 72; Omaha, Nebr., 80. 



Miscellaneous Phenomena. Aurora: 24th, 25th. Fog: 9th, 10th, 22d, 

 23d, 24th. Hail: 1st, 6th, 8th, 9th, 10th, 17th, 23d, 25th, 26th, 28th, 30th. 

 Halos (Lunar and Solar): 2d, 6th, 26th. Thunderstorms: all dates except 

 3d, 4th, 5th, 12th, 14th, 16th, 19th, 27th. 



Rivers. Low, gradually falling stages prevailed on the Mississippi 

 River and moderate stages with considerable fluctuation, but mostly fall- 

 ing stages prevailed on the Missouri River. A few moderate rises oc- 

 curred on the interior rivers in the southern portion of the State on the 

 24th and high stages occurred in the southwestern portion following the 

 heavy rain on the 30th. 



