IOWA WEATHER AND CROP REPORT 597 



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

 The highest velocity reported from a regular Weather Bureau station was 

 at the rate of 56 miles per hour, from the southwest, at Sioux City, on the 

 30th. 



Snowfall. The average snowfall for the state was 0.3 inch, or 2.2 inches 

 less than the normal. Only twice, in 1912 and 1914 when only a trace 

 was reported, has a less amount of snow occurred in November. The 

 measurable snowfall was confined to the northeastern portion of the state 

 and a small area in the extreme northwest corner. The snow in the 

 northwestern portion occurred on the 12th and in the northeastern portion 

 on the 27th. None of the snow remained on the ground more than three 

 days. In the southern division only three stations reported snowfall, and 

 these only a trace. 



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

 82 per cent and at 7 p. m. 72 per cent. The mean for the month was 77 

 per cent, or 1 per cent above the normal. The highest mean was 84 

 per cent at Charles City, and the least was 73 per cent, at Keokuk. 



Sunshine. The average per cent of the possible amount of sunshine 

 was 45 per cent, or 7 per cent less than the normal. The per cent of the 

 possible amounts at the regular Weather Bureau stations was as fol- 

 lows: Charles City, 28; Davenport, 45; Des Moines, 53; Dubuque, 31; 

 Keokuk, 53; Sioux City, 47; Omaha, Nebr., 57. 



Miscellaneous Phenomena. Fog: 1st, 2d, 3d, 9th, 12th, 13th, 17th, 21st, 

 28th, 30th. Hail: 4th. Halos (Lunar and Solar): 4th, 10th, 24th, 29th, 

 30th. Rainbows: 1st, 17th. Sleet: 12th. Thunderstorms: 1st, 3d, 4th, 

 5th, 10th, 11th, 12th, 13th, 30th. Winds, strong: 5th, 6th, 7th, 23d, 27th, 

 28th, 29th, 30th. 



Rivers. Moderate rises accurred on the Missouri and most interior 

 rivers after the general rain that set in on the 11th, but during most of 

 the month low and nearly stationary stages prevailed. On the Mississippi 

 River low and nearly stationary stages prevailed throughout the month 

 but with a slight tendency to higher stages. All rivers remained open 

 the entire month. 



