METEOROLOGICAL TABLES. 



117 



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



Lansing, Michigan. 



Atmospheric Pressure. — (Reduced to sea level; inches and hundredths). — Mean, 30.02; highest, 20.41; date, 6; lowest, 

 29.44; date, 1. 



Temperature. — Highest, 93; date, 27; lowest, 27; date, 3: greatest daily range, 36; date, 6. least daily range, 14; date, 2. 



Precipit.\tion.— Total this month, 2.67; snowfall, T; greatest precipitation in 24 hours, 1.22; date, 20; snow on the ground 

 at end of month, 0. 



Wind. — Prevailing direction, southwest; total movement, 4,330 miles; average hourly velocity, 5.8; maximum velocity (for 

 five minutes) 31 miles per hour, from south, on 23. 



Weather. — Number of days, clear, 14; partly cloudy, 11; cloudy, 6; on which. 01 inch, or more, of precipitation occurred, 8. 



Miscellaneous Phencmena (dates of). — .\uroras, 0; halos: solar, 14, 17, 25; lunar, 0; hail, 0; sleet, 0; fog, 0; thunderstorms, 

 1, 10, 20, 22, 23. 31, *frost: light, 6, 13; heavy, 2, 5; killing, 3, 4. 



Note. — "T" indicates trace of precipitation. 



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

 Mexico. 



DEWEY A. SEELEY. 

 Local Forecaster, Weather Bureau. 



