METEOROLOGICAL TABLES. 



113 



Meteorological observations for the month of January, 1911, at Agricultural College, East 



Lansing, Michigan. 



Atmospheric Pressure.— (Reduced to sea level; inches and hundredths.)— Mean, 30.12; highest, 30.57; date ,16th; lowest- 

 29.44; date, 8. 



TemI-erature.— Highest, 46; date, 27; lowest, 1; date, 3; greatest daily range, 27; date ,2; least daily range, 3; date, 13. 

 Precipit.\tion. — Total this month, 1.43; snowfall, 6.3; greatest precipitation in 24 hours, .54; date, 11; Snow on the ground at 

 end of month, 2.2. 



Wind. — Prevailing direction, southwest; total movement, 6147 miles; average hourly velocity, 8.3; maximum velocity (for 

 five minutes) 34; miles per hour, from northwest on 30. 



Weather. — Number of days, clear, 9; partly cloudy, 7; cloudv 15; on which .01 inch, or more, of precipitation occurred, 14. 



Miscellaneous Phenomena (dates of).— .Auroras, 0; halos: solar, 5, 7, 10, 12, 16, 17, 21, 31; lunar, 10; hail, 0; sleet, 25; fog, 

 26, 27; thunderstorms, 0. *frost: light, 0; heavy, 0; killing, 0. 



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

 Mexico. 



DEWEY .\. SEELEY, 

 Local Forcaster, Weather Bureau. 



15 



