UETEOROLOGICAL 0BSER7AT0ET 



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, 2^3.5 ft. 

 Height of Wind Itistruments 72 ft. 



BULLETIN No. 191. 



NOVEMBER, 1904. 



MONTHLY SUMMARY. 



Preaaure. In inches. 

 Maximum reduced to freezing, 30.2;. I7tli, 8 P. 

 Minimum reduced to freezing, 28.42, 13th, 10 P. 

 Reducedt maximum reading, 30.57, 17th, 8 p. 

 Reduced* minimum reading, 28.73, 13th, 10 p. 



Mean semi-daily reduced, 29.947 



Montlily range 1-84 



*Air Temperature. In Degrees Fahr. 



Highest 560. 4th, 2 p. 



Lowest, 7-;. 29th, 3 A. 



Mean hourly, 33-o 



Mean of means of max. and min., .... 34.0 



Mean sensible (wet bulb), 29.4 



Monthly range 49° 



Highest mean daily, 44.7,4th 



Lowest mean daily, 17.1,28th 



Mean maximum 44-3 



Mean minimum, 23.7 



Mean daily range 20.6 



Greatest daily range 33-5. 29th 



Least daily range t>.o, 13th 



HutHidity. 



Mean dew point 25.1 



Mean force of vapor 185 



Mean relative humidity 77.5 



Frecipitiition. In inches. 



Total precipitation, i.35 



Number of days on which .01 inch or more 



rain or melted snow fell, 



Total snow in inches, 2 



Snow on ground at end of month, . . none 



.* Temperature in ground shelter. 

 t Reduced to freezing and sea-level. 



Wind. 



Total movement 3470 ni. 



Greatest daily movement, . . . 450 m., 14th 



Least daily movement 8 m., 20th 



Mean daily movement 115.7m. 



Mean hourly velocity, 4.8m. 



Maximum pressure per square foot, 11.5 lbs.= 



48m. per hour, 14th, 10 A., N.N.W. 

 Prevailing Direction, West. 



Summary. 



North, Northwest 23 per cent. 



South, 20 " ■' 



West, Northwest, 17" " 



Northwest, 10 '" 



Other directions, 30 



Weather. 



Mean cloudiness observed 43 per cent. 



Total cloudiness recorded by the Sun Ther- 

 mometer 145 hrs.=49 per cent. 



Number of clear days, 13 



Number of fair days, 6 



Number of cloudy days, ii 



Bright Sunshine. 



Number of hours recorded, . . . i48 1irs. = 5i» 



Rain, 13th, 29th. 



Snow, 9th. 13th, 25th, 27th,. 



Oalea, 35 miles or more per hour, 42m. 13th, 



N.N.W.: 48m. 14th, N.N.W.: 3;m. i6th. 



N.N.W. 



