478 IOWA DEPARTMENT OF AGRICULTURE 



100°, at Clarinda and Omaha, Neb., on the 30th, and the lowest was 32°, 

 at Matlock and Sibley, on the 15th, The temperature range for the State 

 Was 68°. 



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

 79 per cent, and at 7 p. m. it was 62 per cent. . The mean for the month 

 was 71 per cent, or 2l per cent higher than the normal. The highest 

 monthly mean was 76 per cent, at Charles City, and the lowest was 66 per 

 cent, at Sioux City. 



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

 the records of 115 stations, was 6.65 inches, or 2.27 inches more than 

 the normal. By divisions the averages were as follows: Northern, 4.87 

 inches, or 0.44 of an inch more than the normal; Central, 6.99 inches 

 or 2.67 inches more than the normal; Southern, 8.09 inches, or 3.70 

 inches more than the normal. The greatest amount, 13.82 inches, oc- 

 curred at Keosauqua, and the least, 3.04 inches, at Mason City. The 

 greatest amount in 24 consecutive hours, 5.06 inches, occurred at At- 

 lantic, on the 6th. 



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

 The highest velocity reported from a regular Weather Bureau station 

 was 85 miles an hour, from the west, at Sioux City, on the 22d. 



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

 of sunshine was 62, or about 7 per cent less than the normal. The per 

 cent of the possible amount at the regular Weather Bureau stations was 

 as follows: Charles City, 45; Davenport, 53; Des Moines, 63; Dubuque, 

 54; Keokuk, 77; Sioux City, 67; Omaha, Neb., 74. 



Tornadoes and Windstorms. — At 8:45 p. m. on the 5th a tornado visited 

 Van Wert, causing a damage of $2,500. On the 12th tornadoes occurred 

 in Iowa, Jones and Jackson Counties; damage, about $5,000. At Williams- 

 burg, the hail accompanying the storm measured from one-half to one 

 and three-fourths inches in diameter. 



Nearly all sections of the State experienced violent wind squalls dur- 

 ing the night of the 22d-23d. Wind mills, fruit and shade trees and 

 farm buildings were blown down in large numbers. The total damage 

 is difficult to estimate, but in some single localities, for example, Jef- 

 ferson, the damage is placed at $15,000. Destructive wind squalls oc- 

 curred in some localities on the night of the 30Lh. 



Misccllaneoits PTienomena. — Fog dense, 10th, 24th; Frost, light, 1st, 

 15th; Hail, Northern Division, 14th, 22d, 24th, 30th; Central Division, 

 4th, 5th, 11th, 12th, 13th, 30th; Southern Division; Halos, solar or lunar, 

 1st, 2d, 3d, 16th, 17th, 18th, 22d, 24th, 26th, 29th; Thunderstorms, All days 

 except 10th and 17th. 



Rivers. — The Missouri River was moderately high throughout the 

 month but no flood stages occurred. Nearly all of the interior rivers 

 of the southern portion of the State overflowed between the 6th and 

 10th. In the Nishnabotna the water was said to have been the highest 

 since 1861. The rivers of the northeastern part of the State were high- 

 est from the 23d to the 25th, when the stage reached was in some cases 

 said to be the highest in 50 years. Moderate stages prevailed in the 

 Mississippi. 



