25 



JUNE WEATHER DIAGRAM 

 Figure U.— For explanation of sjTnbols, see Figure 8 



GENERAL REMARKS 



The routine ice broadcasts were headed with a summary of the 

 patrol vessel's weather conditions. This assured a wide dissemina- 

 tion of the information and saved time and radio traffic by preventing 

 to a large extent special requests for the weather conditions from 

 individual vessels. 



Twice daily a coded weather report was sent to the United States 

 Weather Bureau, Washington, D. C, and the regular Weather Bureau 

 forms were filled out for the patrol period and mailed upon the arrival 

 of the vessel in port. The same messages that w^ere sent to Wash- 

 ington were also sent through the Cape Race radio direction finder 

 station to the Canadian meteorological officials at Toronto. 



From 50 to 100 water temperature and weather reports were re- 

 ceived each day from vessels crossing the ice-patrol area. The 

 regular ice broadcasts frequently carried the following request: 

 "Vessels are requested to report to ice-patrol call letters NIDK, all 

 ice sighted, and when between latitudes 39° 00' N. and 49° 00' N. 

 and longitudes 42° 00' W, and 59° 00' W, sea temperature, weather, 

 visibility, position, course, and speed every four hours." From the 

 reports received in reply to these broadcasts the limits of fog areas, 

 rain, good weather, gales, and other conditions could be ascertained 



