48 



THE REPORT OF THE 



No. 33 



Five temporary weather stations equipped with self-recording instru- 

 ments for registering wind direction and velocity and temperatures were 

 established at approximately equal distances along the Mohawk Trail from 

 North Petersburg, N.Y., to East Charlemont, Mass. They were located, in 

 addition to the two above mentioned, one at a point about midway between 

 Williamstown and North Adams, Mass., one on the east summit, Whitcomb 

 Summit, elevation 2,200 feet, of Hoosac mountain, and the other in western 

 Charlemont, just east of the grade up the mountain and about four miles east 

 of Hoosac tunnel. The western two stations are in the Hoosick River valley, 

 and the eastern two in the Deerfield River valley. The records of these stations 

 were supplemented by hourly observations of wind direction and velocity and 

 temperature at Sheffield, Mass., and Copake Falls, N.Y., the two being separated 

 by a well-marked ridge of the lower Berkshires. Data were also obtained, 

 through the co-operation of the various meteorologists, from those United States 

 weather stations in New England and eastern New York state possessing infor- 

 mation most likely to assist in solving the problem. 



The following tabulations shows a very small eastward component at any 

 of the stations in or near the Berkshires, either in western Massachusetts or 

 eastern New York. 



Summary of Percentages of Principal Wind Components, May 10th to June 8th, 1923 



Locality 



North 



South 



East 



West 



No Petersburg N.Y 



37.8 

 48.5 

 31.3 

 57.6 

 60.8 

 40.0 



19.9 

 13.9 

 7.1 

 12.6 

 25.5 

 24.9 



5.5 



12.1 



11.5 



6.9 



7.9 



10.9 



56.1 





55.5 





69.5 





51.7 



Sheffield Mass 



27.1 



Copake Falls, N.Y 



40.6 









46.6 



17.3 



9.1 



50.0 







On the other hand, there is perceptibly more east wind in the Connecticut 

 valley, as shown by the following tabulation : 



Locality 



North 



South 



East 



West 



East Charlemont, Mass 



- 42.4 

 44.6 

 24.1 

 19.4 



17.4 

 31.5 

 44.9 



47.8 



17.1 

 16.3 

 16.6 

 15.1 



51.8 

 33.7 





37.9 





41.1 









32.6 



35.4 



16.3 



41.1 







A still greater prevalence of east wind, and consequently westward drift for 

 this period, is shown at the Concord, N.H., and Boston, Mass., stations, the east 

 wind at the latter stations being especially marked. 



Locality 



North 



South 



East 



West 



Concord N.H . . 



36.2 

 15.0 



18.4 

 18.8 



18.2 

 26.7 



46.6 





52.2 









25.6 



18.6 



22.4 



49.4 







