692 IOWA DEPARTMENT OF AGRICULTURE 



normal. By divisions the averages were as follows: Northern, 4.32 inches, 

 or 1.64 inches more than the normal; Central, 4.81 inches, or 1.95 inches 

 more than the normal; Southern, 5.22 inches, or 2.17 inches more than the 

 normal. The greatest amount, 9.00 inches, occurred at Cumberland, and 

 the least, 1.94 inches, at Keokuk. The greatest amount in any 24 con- 

 secutive hours, 3.05 inches, occurred at Greenfield, on the 21st-22d. 



Snow. The average snowfall for the State was 0.7 inch, or 1.1 inches 

 less than the normal. The averages by divisions were: Northern, l.G 

 inches; Central, 0.5 inch; Southern, a trace. The greatest amount, 9.0 

 inches, occurred at Sioux Center. 



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

 The highest velocity reported from a regular Weather Bureau station was 

 at the rate of 45 miles an hour from the northwest at Sioux City on the 5th. 



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

 of sunshine was 44, or about 16 per cent below normal. The per cent of 

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

 lows: Charles City, 39; Davenport, 44; Des Moines, 48; Dubuque, 46; 

 Keokuk, 52; Sioux City, 35; Omaha, Neb., 41. Clear days averaged, 8; 

 partly cloudy, 8; cloudy, 14. 



Miscellaneous Phenomena. Aurora, 15th, 18th, 22d. Birds, (Migration 

 of) : Earlham, mocking birds, 21st, whippoorwills, 22d, wrens, 28th. Corona, 

 5th. Fog, 2d, 3d, 4th, 5th, 29th, 30th. Halo, (lunar or solar) : 2d, 4th, 

 5th, 6th, 7th, 9th, 10th, 12th, 16th, 18th, 21st, 22d, 23d. Hail, 2d, 5th, 6th, 

 7th, 9th, 10th, 12th, 16th, 21st, 22d, 23d. Sleet: 8th, 9th, 10th, 15th, 16th, 

 Thunderstorms, 1st, 2d, 3d, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 13th, 14th, 

 15th, 16th, 21st, 22d, 23d, 24th, 28th, 29th. Tornado, 6th, 23d. 



Rivers. River stages were generally above normal throughout the 

 month. The Missouri touching Iowa did not closelj- approach flood stage. 

 The Mississippi did not reach flood stage above Le Claire, though in Du- 

 buque cellars of some wholesale houses were flooded when a stage of 16.6 

 feet was reached on the 22d-23d. Damage was averted by preventive 

 measures taken on warnings given 10 days in advance by the Dubuque 

 Weatl^r Bureau Office. The highest stage at Clinton, 15.4 feet on the 24th 

 was 0.6 foot below flood stage. At Muscatine the highest stage, 15.8 feet on 

 the 26th, was 0.2 foot below flood stage. At Le Claire the highest stage, 

 10.7 feet, 0.7 foot above flood stage, was reached on the 29th, and a dam 

 that is being constructed to improve navigation was damaged. Keokuk 

 passed the flood stage, 14 feet, on the 2lst and reached a stage of 16.2 on 

 the 27th-28th. There was considerable overflow of both the Des Moines and 

 Mississippi rivers in that vicinity. 



Interior rivers, though high, were generally below flood stage except 

 the Des Moines River from Ottumwa to the mouth. Flood stages (10 feet 

 or higher) prevailed at Ottumwa, 24th-27th, with a crest stage of 12.0 feet 

 on the 26th. 



Wettest Period. More precipitation fell and more days were rainy in 

 the period February 1-April 30 in Iowa than in any other similar period 

 in the 30 years since statewide records have been compiled; 9.53 inches 



