METEOROLOGICAL OBSERVATORY 



Hatch Experiment Station, 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



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



Height of instruments above ground, 51 ft. Above sea level, 260 ft. 



BULLETIN No. 62. 



FEBRUARY, 1894. 



MONTHLY SUMMARY. 



frestture. In inclies. 



Actual maximum reading, . 30.3", ■24tli»10 r. 

 Actual mininuim reading, . .28.94, 1 tli,:i i". 



Mean reduced to sea level 30.l(> 



Monthly range, l.():{ 



*Air Teinpernture. In Degrees Falir. 



Mean daily movement, 17,3 m' 



Mean hourly velocity 7.2 ni- 



Maximum pressure per square foot,2-2J Ibs.= 

 {)7m. per hour, 23rd, at 2 P. 



* Precipitation. In inches. 

 Total precipitation 1.74 



Highest, 50, I8th; 49, lOth * Weather. 



Lowest —9; —I i> 2."ithMea.i cloudiness observed, . . . 53 per cent. 



Mean, 25.5; 216. Number of clear days, 5 



Monthly Range, 59. ; 66. iNumber of fair days 7 



Highest mean liaily 42.; 38.2;Numberof cloudy days 16 



Lowest mean daily, 1.; —1.5,Total cloudiness recorded by the Sun Ther- 



Mean maximum 32 3;33.5| mometer 175 hours or ,^9 per cent. 



Mean minimum, 17.8; 9.6 " ■ 



Mean daily range, 14.5; 23.9 



Greatest daily range, 32. ; 47.; 



Least daily range 4. ; 10 



Haniidity. 



Mean dew point, 17.9 



Mean force of vapor 1491 



Mean relative humidity, 77.5 



Wind. 



Prevailing Directions. 



Northwest, 20 percent. 



North 15 " " 



South, 11 " " 



South West 13 " " 



Other directions . . . . 39 " " 



Total movement 4865 m. 



Greatest daily movement, . . . 3.')0 m., 11th. 

 Least daily rnovement 33 m.; 14th. 



per 

 Number of days on which .01 inch or more 



rain or "melted snow fell, 9 



Number of inches of snow on the ground at 



the close of the month, 5 



BrigJit Sunshine. 



Number of Hours recorded, 121 



Kain 9th, 10th, lSlh,]9th. 



Snoiv. 1st, 4th, 9th, 10th, lltli, 12th, 13th, 1.3th, 

 21st, 23rd, 26th. 



Total fall in inches, igj 



Hail, J loth. 



Mean Ozone, 36 per cent. 



Aurora Borealis, 22d,23d. 



Halos. 



Solar .3th, 12th, 17th, 2.3th. 



Lunar, 14th, 17th, ISth, 20th. 



Galesy of 35 or more miles per hour, 35, 4th. 

 N.; 63 llth,W.;35,12th,N.; 37, ISth, X.N. E. • 

 H7, 15th, N.; 49, 16th, N.W.; 67,23d,N.W. ; 

 35,26th, N. 



*The first figures denote readings at top of tower, the second at base. 



