168 Storm Routes and Indian Summers. 
Pensacola Bay it commenced on the afternoon of the 6th, from 
the eastward, and veered gradually to the S. on the moming of 
the 7th, and to the W. and N. W.,during the day and evening.* 
At St. Joseph’s, West Florida, the gale was severe on the 7th and 
8th, from E. round by S., ultimately to N. W., driving all the ves- 
sels on shore except one. At Fort Cass, East Tennessee, and in 
the upper counties of South Carolina, the storm was violent from 
N. E., veering N., on the 7th and 8th. The gale was on the 
coast of North Carolina from the 8th to 10th, blowing from N. E. 
and extending N. of the Chesapeake ; with the barometer, at New 
York, at a maximum of 30-73 in. on the 9th. From the Caro- 
linas it continued its course on the Atlantic Ocean. 
The recurvation of this storm to the eastward, from near lat. 
26°, was even more sudden and abrupt than that of the Mexican 
and Bermuda gale, from a lower latitude, which we have already 
considered. A like cause also for its sudden deflection and un- 
usually eastern course is found in a plus state of the barometric 
pressure in more northern latitudes, at this period. ‘Thus, at 
New York during the last ten days of Sept., 1837, the mean of 
my barometer was 30-324 in., and for the first ten days of Oct. 
30-279 in. ;+ being for the twenty days ‘216 in. above the mean 
for that year, 
When once the route of this storm from the Gulf of Mexico 
to the Atlantic Ocean had been ascertained, it was soon discover- 
ed that a similar course had pertained to many other storms from 
the same regions; but with great inequality as regards their fre- 
quency in different years. It was found, also, that this early re- 
curvation of storms at some periods, and their easterly courses in 
~ lower latitudes, has an important influence on the weather and cli- 
mate in the northern portion of the United States. 'This may be | 
seen. BI the state of the barometer and weather, which we have 
shown in two important cases, cotemporaneously with the passage 
of storms over the southern States ; and similar weather usually 
prevails whenever this peculiar course is pursued by the Mexi- 
can Northers. For the intervals between our storms are thereby 
imereased, in extent and duration ; and hence it is that we enjoy 
_ * Logbooks of the United States’ Squadron at anchor in Pensacola Bay ; on file 
in the Navy Department, Washington, 
t Or a mean of 30-256 in. for th 10M 
"ated 0 or the twenty days, as corrected and reduced to 
