METEOROLOGICAL OBSEEVATOEY 



Hatch Experiment Station 



MASSACHUSETTS AGRICULTURAL COLLEGE, 



.A^ISdliiEIiST. 



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



Heii^ht of harometfr above ground, jr ft. Al>07'g sea level, 27J.^ ft. 



Height of Wind Instrufnents 72 ft. 



BULLETIN No 183. 



MARCH, 1904. 



MONTHLY SUMMARY. 



fressiire. In inches. 

 Maximum reduced to freezing, 30.63,5th, 10 A. 

 .Minimum reduced to freezing, 29.07, 3d, 5 p 

 Reducedt maximum reading, 30.96, 5th. 10 a 

 l<educed+ minimum reading, 29. 38, 3d, 5 p 



Mean semi-daily reduced, . 30.106 



Montlily range 1.5S 



*Air Teinperatitre. In Degrees Fahr. 



Highest 65.0, 26th, 12 ; 30 P. 



Lowest —3.0, 5th, 7 A. 



Mean hourly, 31.0 



Mean of means of max. and nun 30.S 



Mean sensible (wet bulb), 27.5 



Monthly range hS.o 



Highest mean daily, 47.6,26th 



Lowest mean daily 11.2, 5th 



Mean maximum, 39.9 



Mean minimum, .... 21.7 



Mean daily range 18.2 



Greatest daily range 34.0, 26th 



(-east daily range 3.5,22th, 



ITti midifif. 



Mean dew point 22.4 



Mean force of vapor, 175 



Mean relative humidity, 74.4 



Wind. 



Total movement, 4444 ni. 



Greatest daily movement 327m., 4tli 



Least daily movement 41m., 5th 



Mean daily movement, i43»i- 



Mean hourly velocity, 6.0m. 



Maximum pressure per square foot, 14.5 lbs.= 



54 m. per hour, 3d, 9 P., N.W. 

 Prevailing Direction. West, Northwest. 



.Summary. 



Northwest, 23 per cent. 



South, 16 " " 



North, 13 " " 



West, 13 " " 



West, Northwest 13 " " 



Other directions 22 " " 



Weather. 



Mean cloudiness observed, .... 57 per cent. 

 Total cloudiness recorded by the Sun Ther- 

 mometer, . ... 199 l)rs.=54 I'er cent. 



Number of clear days 12 



Number of fair days, 5 



Number of cloudy days, . . 14 



Brif/Jit Smmhine, 



Number of hours recorded, . . . 172 hrs. = 46)1 

 Jtnin, 3d, 6th, 7th. Sth. 22d. 23d, 25th. 

 Precipitation. In inches. Siepf , 31st. 



Total precipitation, 4.4s]*"»"'' ist. 6th, gtli. nth, 15th, iSth, 31st. 



Number of days on which .01 inch or more 1 «««««• 35 miles or more per hour, 54m. 3d, 



rain or melted snow fell, tj N.W.; 37m. 4th, N.W : 45m 9th, W. : 



a. ^ ^ , ■ ■ ■. lom. Tith, N.; 39m. i6th, N.W.; 35m. 



Snow, total in inches 11 20th. W.N. W. ; 36m. 26th, S.W. 



Snow on ground at end of month, . i inch|/)„«., ^^f ^]pigl,i,.,„ jo 



• Temperature in ground shelter, 

 t Reduced to freezing and sea-level. 



