METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



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



Height of instruments above ground, 51ft. Above sea level, 273.5 ft. ** 



BULLETIN No. I 19. 



NOVEMBER, 1898. 



MONTHLY SUMMARY. 



Pressure. In inches. I 



M.iximiim reduced to freezing, 30.22, 4th, 7a. [ 

 Minimum reduced to freezing, 2S.St7, 30th, 7A. 

 Uedueedt maximum reading, 30.53, 4tli, 7a. 

 Reducedt min. reading, .... 29.28, 30th, 7a. ; 



Mean reducedf 30.010 



Monthly range, 1.25 



*Alr Temperature. In Degrees Fahr. j 



Highest, 62.0, 3d,3P.i 



Lowest . . 6, 29th, 8A- 



Mean 37.3 



Mean of means of max. and min. 37.5 



Mean sensible( wet bulh) 36.3 



Monthly Range, 56.0 



Highest mean daily, 5.02, 6th 



Lowest mean daily 18.1,2!lth 



Mean maximum 46.2 



Mean minimum 28.9 



Mean daily range 17.4 



Greatest daily range, 36.0, 4th 



Least daily range 4.0,19th 



Bwmidity. 



Mean dew point, 32.7 



Mean force of vapor, 247 



Mean relative humidity 83.4 



Wind. 



Prevailing Direction, North North West. 

 Summary. 



North West, ... 17 per cent. 



West 13 " '• 



North, 27 " " 



Other directions 43 per cent. 



Total movement 48.53 m. 



Greatest daily movement, . . . 07."> m., 27th 



Least daily movement 21m.,22d 



Mean daily movement, 362 m. 



Mean hourly velocity C.7 m. 



Maximum pressure per square foot, 19.0 lbs = 

 62m. per hour, 27th, 7a., N. 



Precipitation. In inches. 



Total precipitation, .5.48 



Number of days on which .01 inch or more 



rain or melted snow fell, U 



Weatlier. 

 Mean cloudiness observed, . . 60.0 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, . . . 189 hours or 60.0 per cent. 



Number of clear days 7 



Number of fair days 10 



Number of cloudy days, 13 



Bright Sunshine. 

 Number of Hours recordeil, 126 hours or 40il 

 Baiw,6th, 9th, 10th, lltli, l.-Jth, 14th, 17th, 



ISth, 19th, 24th, 30th. 

 Sieet, 24th. 



Snow, 24th, 26th, 27th, 30th. 

 Qales, of 35 or more miles per hour, 36m., 

 6th, N.W. ; 36m., 7th, W. ; 35m.. 8th, S.; 

 .-j-im., nth, W.; 40m., 20th, N.W.;35m., 

 24th, N. ; 51m., 26th. N. ; 62m., 27th, N.; 

 4om., 2Sth, N. 



No. days sleighing 4 



Snow on ground at end of month, . 6 inches. 



* Temperature in ground shelter. 



t Reduced to freezing and sea level. 



* * Determined from levels of B. & M. R. R. 



