BULLETIN No. 479. 



NOVEMBER, 1928 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGIIICULTUIUL EXPERIMENT 



STATION. 



Latitude, 42° 23' 48.5" N. Longitude 72' 31' 10" \V. 



Height of barometer above ground, 36 ft. Above sea level, 2^j.^ ft. 

 Height oj Wuid Instruvients 6y ft. lime used, y^t/iAfer. 



MONTHLY SUMMARY. 



Pressure. In inches. 



Maximum reduced to freezing, 30.23, ist, S A. 

 Minimum reduced tofreezins,29.i4, 19th, 7-30 p. 

 Reduced maximum reading, 30.53, ist, 8 A. 

 Reduced minimum reading, 29.43, igth, 7-30 p. 



Mean semi-daily reduced 30.001 



Monthly range i.io 



Air Temperature. 



In Degrees Fahr. 



Highest 73.0,17th, 12-30 p 



Lowest 14. 5, 28th, 2-30 A 



Mean hourly 39 4 



Mean of means of max. and min 40.0 



Mean sensible (wet bulls) 35.4 



Monthly range 5=;.o 



Highest mean daily 61.2, i6th 



Lowest mean daily 30.4,23rd 



Mean maximum 48.7 



Mean minimum 31.7 



Greatest daily range 34 0, 14th 



Least daily range 5-5, 3oth 



Humidity. 



Mean dew point 31.1 



Mean force of vapor 246 



Mean relative humidity 7S.1 



Precipitation. In inches. 



Total precipitation, in inches i 



Number of days on which .01 inch or more 



rain fell 9 



Total snow in inches, 



Wind. 



Total movement 4736ni 



Greatest daily movement 442m, 7th 



Least daily movement 34ni,2nd 



Mean daily movement i57-9ni 



Mean hourly velocity 6.6m 



Maximum pressure per square foot, 15.0 lbs = 



55m per hour, 6th, 9 p. 

 Maximum velocity for 5 minutes, 48m per 



hour, 6th, 4-30 p. 



Prevailing direction, West Southwest 

 Summary. 



West 27 per cent 



Northwest 27 " " 



South 13 " " 



East 7 " " 



Southeast 7 " " 



North Northwest 7 " " 



Other directions 12 " " 



Weather. 



Mean cloudiness observed .... 53 percent 

 Total cloudiness recorded by the Sun 



Thermometer . . 171 hours = 58 per cent 



Number of clear days 7 



Number of fair days 6 



Number of cloudy days 17 



Bright Sunshine. 



Number hours recorded, 121= 42 per cent. 

 Rain. 2nd, 3rd, 4th, 6th, Sth, 12th, 17th, 19th, 

 22nd, 30th. 



Snow, Sth, 22nd, 25th, 30th. 



Gales, 55m., 6th, S.E., 35m., 7th, W.N.W.' 

 38m, 9th, N.W., 40m., 19th, S., 35m, 

 20th, N.W., 35m. 2;th, N.N.W., 35m. 

 27th, N.W. 



