METEOROLOGICAL TABLES. 



203 



Monthly Meteorological Summary, Lansing, Michigan, May, 1917. 



Barometer— Mean, 29.92 inches; highest, 30.22 inches, on 7th; lowest, 29.27 inches, on 1st. 



Temperature— Highfst, 83°, on 19th; lowest, 30°, on 3rd; greatest daily range, 34°, on 14th; least daily range, 7°, on 2Ist; 

 normal for month, 57.1°; e.xcess or deficiency this month, —7.0°; accumulated excess or deficiency since January 1st, —461°: 

 average daily, same period, —3.1°; highest in 32 years, 95°; lowest, 17°. 



Precipitation (in inches)— Total amount, 3.37; normal, 3.58; excess or deficiency this month, —0.21; since January 1st, 

 -f 1.52; greatest amount in any 24 hour period, 1.29, on 26th and 27th; total snowfall, 0.0 inches. 



WiND-^Prevailing direction, northwest; total movement, 6,097 miles; average hourly velocity, 8.2 miles; maximum velocity, 

 29, from the southwest, on 1st. 



Dates of— .\uroras, 0; dense fog, 0; hail, 20; sleet, 0; thunderstorms, 1, 17, 19, 21, 26; halos: solar, 3, 4, 29; lunar, 3; frost: 

 killing, 3; heavy, 9, 10; light, 4, 14. 



DEWEY A. SEELEY, 



Local Forecaster. 



