SEVENTEENTH ANNUAL YEAR BOOK— PART X 



543 



COMPARATIVE DATA FOR THE STATE — NOVEMBER. 



T indicates an amount too small to measure, or less than .005 inch precipi- 

 tation and less than .05 inch snowfall. 



DECEMBER. 



No exceptional features were recorded during the month, except a 

 thunderstorm which occurred over the western three-fourths of the 

 state on the night of the 25th-26th. The second and third decades, however, 

 were much colder than usual and the first week was exceptionally warm; 

 the daily means ranging from 10° to 25° above the normal. After the 

 7th the temperature was almost continuously helow the normal, and from 

 the 19th to the 22nd, inclusive, the weather was unusually cold, the 

 daily values being from 13° to 30° below the normal. The 4th was the 

 warmest day, when the temperature was generally up to 60° or higher. 

 The thunderstorm on Christmas night began in the late ajfternoon in the 

 western part of the state, gradually moving eastward and passing over 

 Des Moines between 8:00 p. m. and 9:00 p. m., and continuing until after 

 midnight in the counties to the eastward. It was accompanied by rain, 

 sleet and wind squalls. The rain froze as it fell and covered everything 

 with a glaze of ice, which delayed railway and street car traffic and 

 did much damage to telegraph and telephone lines. The small amount 

 of corn in the fields at the end of November was gathered and cribbed 

 during the first week of December and all farm work was finished for 

 the season. The ice harvest began in many localities on the 26th. 



