10 THE WEATHER 



will start in from the S.E. and gradually " back " to the N.E., then 

 to the X. and finally to the X.W. 



To locate the center of the storm, stand with your face squarely 

 to the wind, and extend your arms from your sides. Your right hand 

 will then point in the direction of the center of the storm. For exam- 

 ple, if one faces a wind from the south, his extended right hand will 

 point toward the west ; if one faces a west wind, his extended right hand 

 will point north. 



A study of the daily weather maps, printed in many daily papers, 

 will be of much help in becoming familiar with the movements of these 

 storm-eddies. 



The pressure of the atmosphere at the center of the storm-eddy 

 is always less than at a distance from the center; therefore, as the 

 storm approaches, the pressure will decrease and the barometer will 

 fall. Thus a falling barometer indicates the approach of a storm- 

 eddy, and the direction of the wind will give approximately the 

 location of the center. 



If the barometer is falling and the wind square from the south, the 

 indications are that the storm is approaching from the west and will 

 probably pass near the observer. 



If the barometer is falling and the wind from the southwest, the 

 center of the storm will probably pass north of the observer. 



If the barometer is falling and the wind N.E., the center of 

 the storm is approaching from the southwest, and will probably 

 pass south of the observer. If the barometer is rising and the wind 

 S.W. to W., the center of the storm will pass north of the observer, and 

 clearing weather follow soon. 



The following barometer and wind table is condensed from Pro- 

 fessor Garriott's more extended compilation, and is the result of many 

 years of study and experience : — 



Barometer steady ; wind, S.W. to N.W. ; fair weather, with slight 

 changes in temperature for 1 or 2 days. 



Barometer falling slowly; wind, S.W. to N.W. ; warmer, with rain 

 in 24 to 36 hours. 



Barometer falling rapidly; wind, S.W. to N.W. ; warmer, with rain 

 in 18 to 24 hours. 



Barometer falling slowly ; wind, S. to S.E. ; rain within 24 hours. 



