BULLETIN No. 326. 



FEBRUARY. 1916 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



Latitude, 42" 23' 48.5" N. Longitude 72* 31' 10" W. 



Height of barometer above ground, 51 ft. Above sea level, 27J.^ ft. 

 Height oj Wi?i(i Instruments 72 ft. 



MONTHLY SUMMARY. 



Pressuie. In inches. 

 Maximum reduced to freezing, 30.27, 14th, i P 

 Minimum reduced to freezing,28.45, 25th, i? p 

 Reducedt ma.ximum reading, 30.60, 14th, i p 

 Reducedt minimum reading, 28.76, 25th, 12 p 



Mean semi-daily reduced 30.005 



Monthly range 1.84 



*Air Temperature. In Degrees Fahr. 



Highest 47.5,1st, OA 



Lowest —16.0, 15th, 9 A 



Mean hourly 20.4 



Mean of means of max. and min 20.1 



Mean sensible (wet bulb) 17.8 



Monthly range 63.5 



Highest mean daily 40.7, ist 



Lowest mean daily 1.3 15th 



Mean maximum 28.6 



Mean minimum 11. 5 



Mean daily range 17 



Greatest daily range 39-57 1 5th 



Least daily range 5-57 12th 



Humidity. 



Mean dew point 13.0 



Mean force of vapor 116 



Mean relative humidity 79.9 



Precipitation. In inches. 



Total precipitation 5.27 



Number of days on which .01 inch or more 



rain fell M 



Total snow in inches .... 16^ 



* Temperature in ground shelter. 



t Reduced to freezing and sea-level. 



Wind. 



Total movement 5504 m 



Greatest daily movement 519m, 28th 



Least daily movement 37m, 17th 



Mean daily movement 190 m 



Mean hourly velocity 7.9 m 



Maximum pressure per square foot, 16.0 lbs = 



57 m per hour, 28th, 3 A, W.N.W. 

 Maximum velocity for 5 minutes, 36m per 



hour, 28th, 4 A, W.N.W. 

 Prevailing direction. West Northwest. 



Summary. 



North 14 per cent 



South Southwest io " 



West f . . 17 " 



West Northwest 10 " 



Northwest 21 " 



Other directions 28 " 



Weather. 



Mean cloudiness observed .... 59 per cent 

 Total cloudiness recorded by the Sun 



Thermometer . . 156 hours = 53 per cent 



Number of clear days 8 



Number of fair days 9 



Number of cloudy days 12 



Bright Sunshine. 



Number hours recorded, 140 hrs, = 47 per cent 

 Rain, ist, 6th, i8th, 23d, 24th, 25th, 26th. 

 Hail. 23d. 

 Snow, 2d. 3d, 8th, 9th, nth, 12th, 13th, i6th 



17th, 18th, 23d. 26th, 27th. 

 Days of Sleighing. 28. 

 Gales. 35 or more miles per hour: 54m, 7th, 



W.N,VV.; 47m, 8th, W.; 36m, loth, W.; 



51m, igth, W.; 46m, 27th, W.N.W.; 57m, 



28th, W.N.W. 



