During the 24 hours before the all-snow storms (of which there were 12), the pressure on Mt. Washington (elevation 6,288 ft. and 142 miles to the north) rises, the usually prevailing strong northwesterly wind drops sharply, and the temperature mostly shows a rise from a low value. Before heavy snow mixed or alternating with rain (4 storms), the pressure on Mt. Washington starts high and falls, the temperature is moderate, and the wind velocity is comparatively low, frequently with southerly or easterly components.

This content is only available as a PDF.

Footnotes

* Continued from April Bulletin, pp. 131–133.

1 Now with the Woods Hole Oceanographic Institution, Museum of Comparative Zoology, Cambridge 38, Mass.