METEOROLOGICAL OBSERVATORY 



OF THE 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



-A.3VEI3:ER,ST. 



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



Height of barometer above ground, 31 ft. Above sea level., 273-5 f^- 

 Height of Wind Instruments 72 ft. 



BULLETIN No. 179. 



NOVEMBER, 1903. 



MONTHLY SUMMARY. 



Pressure. In iyclies. 

 Maximum reduced to freezing, 30.38. 21st. 10 a. 

 Minimum reduced to freezing, 29.0S, jth, i i- 

 Keducedt maximum reading, 30.70, 21st, 10 a. 

 Reduced* minimum reading, 29.3S, 5tli, i p- 



Mean tri-daily reduced 30-oo9 



Monthly range • i-32 



*Air Temperature. In Degrees Falir. 



Highest, 74.5, 4th, 3:30 P. 



Lowest 60 27th, 6:30 A. 



.Mean hourly, 34-3 



Mean of means of max. and min., . . • .35.1 



Mean sensible (wet bulb), 3i-3 



Monthly range, ("S.s 



Highest mean daily, 52.9- 4th 



Lowestmean daily, 15.1,27th 



Mean maximum, 45-7 



Mean minimum, 24.5 



Mean daily range, 21.2 



Greatest daily range, 39-o, 4th 



Least daily range, 6.;, i6th 



Huin'ulity. 



.Mean dew point, 25.6 



Mean force of vapor, 231 



Mean relative humidity, 73-5 



Precipitation. In inches. 



Total precipitation 2.04 



Number of days on which .01 incii or more 

 rain or melted snow fell, 5 



Stiow, total in inches trace 



• Temperature in ground shelter. 

 t Reduced to freezing and sea-leveL 



%Viud. 



Total movement, 3362 m. 



Greatest daily movement, .... 320m., 7tli 



Least daily movement, J'^i-i 22d 



Mean daily movement, 112m. 



Mean hourly velocity, 4.7m. 



Maximum pressure per square foot, 9.; Ibs.^ 



44 m. per hour, 24th, 12 M., W.N.W. 

 Prevailing Direction, West, Northwest. 



Summary. 



\V«st, Northwest, 30 per cent. 



North. Northwest, 20 " " 



West, . 10 " " 



Southwest, 10 " " 



Other directions 3° " " 



Weatlier. 



Mean cloudiness observed, . . . . 41 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, Ill hrs.=38 per cent. 



Numter of clear days, iS 



Number of fair days, 5 



Number of cloudy days, 10 



Bright Sunshine. 



Number of hours recorded, . . . 1S2 hrs.=62* 

 Hain, 5th, 12th, 16th, 17th, 22d. 23d. 

 Snow, 6th, [jth. i6th. 22d, 23d. 

 Oales, 35 miles or more per hour, 44111.24111, 

 W.N.W. 



