ME. H. F. BLANFOED ON THE WINDS OF NOETHEEN INDIA. 
573 
Central India. — Dr. Townsiiend’s Reports, published in the ‘Central Provinces 
Gazette’ and in the Sanitary Commissioner’s Reports for those provinces, give the 
anemometric results of Jubbulpore and Nagpore for the three years 1869-71, together 
with those of other stations for shorter periods. I select these two as the most com- 
plete and trustworthy. 
Jubbulpore is situated on the north, Nagpore to the south, of the belt of hills which 
stretches across Central India, and is now generally known as the Satpoora range. 
At its northern foot this range or series of ranges dips to the alluvial valley of the 
Nerbudda, lying between two escarpments, and allowing an uninterrupted passage to 
the prevalent westerly winds. Jubbulpore is situated at the upper end of this valley, 
1350 feet above the sea, not far from the low watershed that separates the drainage of 
the Nerbudda and the Ganges. North of the station the escarpment that borders the 
valley on the north retreats, and a gently ascending plain (over which is carried the 
railway to Allahabad) forms a break in the tableland, and affords a channel to northerly 
winds. 
Nagpore lies 150 miles south-south-west of Jubbulpore, on the plain that extends 
along the southern foot of the Satpooras, in a kind of bay between two prominent 
offshoots of the hill-country, which is drained by the Wynegunga and its tributaries. 
The station is about 1000 feet above the sea. 
At both stations westerly winds preponderate on the whole, the dominant direction 
being west at Jubbulpore, north-west at Nagpore. East and south-east are the directions 
of least frequency at the former, and south-east and south at the latter station. Thus 
the wind veers on an average four points between Jubbulpore and Nagpore. Calms are 
not very frequent at either station. At Jubbulpore the mean velocity of the wind up to 
May is rather below that at Patna, but during the rains it is much greater. At Nagpore 
it is greater than at Jubbulpore in all months of the year. The velocity is highest in 
June, lowest in November or December. 
At Jubbulpore north and north-east winds blow pretty steadily in November and 
December, but south and south-east winds are not infrequent, being about half as 
numerous as the former. These are probably in great part local mountain winds. In 
January westerly elements begin to preponderate over easterly, and southerly to gain on 
northerly winds. South winds attain their maximum frequency in March, in which 
month winds from between south and west amount to 54 per cent, of the observations, 
while those from the opposite quadrant have diminished to 28 per cent. In April 
and May west and north-west winds gain the ascendant ; but on the setting in of the 
rains the wind backs towards south-west and blows very steadily during the three 
months June to August from a mean direction about a half a point south of west. In 
September the monsoon slackens ; north and north-west winds begin to preponderate, 
veering towards north and north-east; and in November the north-east monsoon is 
reestablished. 
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