METEOROLOGICAL OBSERVATORY 



OF THE 



Hatch Experiment Station 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



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



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

 Height of Wind Instruments 72 ft. 



BULLETIN No. 167. 



NOVEMBER. I 902. 



MONTHLY SUMMARY. 



Pressure. In inches. 

 Maximum reduced to freezing, 30.17, ist, 7 A. 

 Minimum reduced to freezing, 29.07, 22d, 6 P. 

 Iteducedt maximum reading, 30.4S, ist, 7 A. 

 Keducedt minimum reading, 29.36, 22d, 6 p* 



Mean tri-daily reduced 30.055 



Monthly range ■ ,. • 1.12 



*Air Temperature. In Degrees Fahr. 



Highest, 65.0, 4th, 4 p. 



Lowest 17-5, 29th, 7 A. 



Mean hourly, 42-0 



Mean of means of max. and min., .... 42.4 

 Mean sensible (wet bulb), ....... 39.2 



Monthly range 47-5 



Highest mean daily, 55.0,6th 



Lowest mean daily, 31.0, 29th 



Mean maximum, 52.7 



Mean minimum, 32.1 



Mean daily range, 20.6 



Greatest daily range, 39.0, loth 



Least daily range, 3.0, 27th 



lluniidUi/. 



Mean dew point, 34.2 



Mean force of vapor, 291 



Mean relative humidity, 75.6 



Precipitation. In inches. 



Total precipitation, 1.27 



Number of days on which .01 inch or more 



rain or melted snow fell, S 



Snow, total in inches, i-5 



Snow on ground at end of month 1.5 



* Temperature in ground shelter, 

 f Reduced to freezing and sea-level. 



^yind. 



Total movement, 3077m. 



Greatest daily movement, 250m., 23d. 



Least daily movement 12m., 20th. 



Mean daily >movement, 102 m. 



Mean hourly velocity, 4.3 ni. 



Maximum pressure per square foot, 9.5 lbs.= 



44 m. per hour, 22d, 7 p., W.X.W. 

 Prevailing Direction, West. 

 Summary. 



North, 10 per cent. 



South, Southwest, 10 " 



North, Northwest 13 " 



Northwest, 10 '' 



South, Southeast, 17 " 



South, 13 " 



Other directions, 27 " 



WeatJier. 

 Mean cloudiness observed, .... 62 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, 184 hrs.=63 per cent. 



Number of clear days, 4 



Number of fair days, 11 



Number of cloudy days, 15 



Jiright Sunshine. 



Number of hours recorded, . . . io9hrs.=37ll 

 Jiain, 6th, nth, 12th, 13th, 19th, 22d, 24th, 



26th, 27th. 

 Snow, 23d, 26th, 30th. 

 Gales, 35 miles or more per hour, 44 m. 22d, 



W.N.W.; 43 ni. 23d, W.N.W.; 41m. 28th, VV. 



