METEOROLOGICAL TABLES. 



121 



Meteorological observations for the month of September, 1911, at Agricultural College, 



East Lansing, Michigan. 



Atmospheric Pressure. — (Reduced to sea level; inches and hundredths). — Mean, 30.06; highest, 30.36; date, 22; lowest, 

 29.72; date, 11. 



Temperature. — Highest, 89; date, 1; lowest, 38; date, 28; greatest daily range, 35; date, 17; least daily range, 7; date, 21. 



Precifit.^tion. — Total this month, 5.05; snowfall, 0; greatest precipitation in 24 hours, 1.46; date, 28 and 29; snow on the 

 ground at end of month, 0. 



Wind. — Prevailing direction, southeast; total movement, 3460 miles; a,verage hourly velocity, 4.8; maximum velocity (for 

 five minutes), 20 miles per hour, from northwest, on 11. 



Weather. — Number of days, clear, 11; partly cloudy, 8; cloudy, 11; on which .01 inch, or more, of precipitation occurred, 13. 



Miscellaneous Phenomena (dates of).— Auroras, 0; halos: .solar, 28; lunar, 11; hail, 0; sleet, 0; fog, 7, 8, 10, 11, 22; thunder- 

 storms, -2, 5, 11, 14, 18, 24, 27, 28; *frosts: light, 0; hea\T; 0: killing, 0. 



♦Frosts are not recorded after the occurrence of "killing," except in Florida and along the immediate coast of the Gulf of 

 irexico. 



DEWEY A. SEELEY, 

 Local Forecaster, Weather Bureau. 



