142 



STATE BOARD OF AGRICULTURE. 



MONTHLY METEOROLOGICAL SUivIMARY. LANSING, MICHIGAN, APRIL, 1921. 



B.\R0METER — Mean, 29.99 inches; highest, 30.42 inches, on 11; lowest, 29.33 inches, on 23. 



Temperature— Highest, 81°, on 6; lowest, 19°, on 1; greatest daily range 33°, on 3; least daily range, 5°, on 22; normal temp- 

 erature, 45.6°; departure, +6.0°; accumulated departure since January 1, +818°; average daily departure since January 1, +6.8°; 

 highest in 36 years, 88°; lowest, 10°. 



Precipitation (in inches) — Total this month, 3.80; normal, 2.54; departure, +1.26; since January 1st, — 0.11; greatest amount 

 in 24 hours, 0.66, on 16; total snowfall, 4.2 in. 



WiN-D— Prevailing direction, southwest; total movement, 5,544 miles; average hourly velocity, 7.7 miles; maximum velocity, 

 27 miles per hour, from south west, on 27. 



Dates of— Auroras, 0; hail, 0; sleet, 16; fog, den»e, 0; thunderstorms, 8, 21, 22, 25, 20, 28; halos, solar: 1, 2, 3, 4, 5, 20, 24, 28; 

 lunar, 0; frost: killing, II, 18; heavy, 0; light, 9, 19. 



DEWEY A. SEELEY, 



Meteorologist. 



