21 



These averages are k)v tlie days that the General Greene was at sea 

 only. The weather the General Greene experienced during the obser- 

 vation cruises is shown on Figure 8. On the days that show no 

 observations the vessel was in St. John's. During March the General 

 Greene remained north of latitute 45° N. The weather was generally 

 cold and stormy. The barometric pressure reached its lowest point 

 of 28.10 at 9 and 10 p. m. on March 15. At the time a strong easterly 

 gale was blowing which shifted to southwest. The severe weather 

 greatly hindered the work of the General Greene. 



MARCH WEATHER DIAGRAM 



FiGUEE 8.— Inner figures show day of month; the next band out contains the record of the atmospheric 

 pressure; the next outer one indicates the degroe of visibility (black areas for visibility of less than 

 2 nautical miles and crossed hatched areas for visibility between 2 and 4 miles; the outer margin 

 shows the average direction and force of the wind for 12-hour periods, midnight to noon and noon 

 to midnight. Wind directions are toward the small curcle in each case. The figures Indicate the 

 average force of the wind on the Beaufort scale 



