METEOROLOGICAL SERMCE OF CANADA 



During the past year meteorological observations have been taken 

 by 634 observers connected with the Government Service, and reports 

 from them have been received at the Central Office, either daily by 

 wire or monthly by mail. 



The weather reporting stations are in two divisions, the first of 

 which includes 364 stations where the observing is performed volun- 

 tarily by observers who keep a record of the weather, using meteoro- 

 logical instruments supplied by the Goverment 



The work at the Central Office has been steadily increasing. 

 The establishment of six pilot balloon stations for obtaining data 

 necessary to the aviator and incidentally for the study of the upper air 

 currents has made further assistance imperative. The railways call 

 upon the Service with ever increasing frequency for meteorological 

 data required in the settlement of claims against them; legal firms 

 ask for many certified statements and investigators in the many 

 branches of science connected with agriculture and forest and plant 

 growth solicit the assistance of the Meteorological Service in obtaining 

 data indispensable for the solution of various problems. 



Until last year, with the exception of occasions when storms 

 were expected, no forecasts were issued either on Saturday night or 

 Sunday morning, but now forecasts are issued twice every day during 

 the season of navigation to the Dominion Wireless stations for trans- 

 mission to ships both on the Great Lakes and at sea. 



Forecasts have been issued twice daily for all parts of the 

 Dominion and Newfoundland and the percentage of verification has 

 been 84 per cent. 



The storm warning service was maintained throughout the year 

 in the Maritime Provinces and during the season of navigation on the 

 Great Lakes and Gulf of St. Lawrence. Of the total number of 

 warnings issued 84.4 per cent, were verified. 



Magnetic Observations 



During the fiscal year 1920-21 continuous photographic records 

 of the Magnetic elements at Agincourt were secured without material 

 loss. Magnetic disturbances were less frequent than for several years 

 being synchronous with fewer sun spots and auroras. The more 

 pronounced disturbances occurred on the following dates: 1920 — 

 April 15; September 28, 29. During the latter of these the recording 

 limits of the instruments were exceeded for short inter\'als. 



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