86 



J. Eliot — The South- West Monsoon Storms 



[No. 2, 



when charted, shew that the depression, as defined by the isobar of 29" 3", 

 was an elliptical shaped area at the centre of which the pressure probab- 

 ly did not exceed 29'2". The larger axis of this stretched E. 'N. E. 

 and W. S. W., and was probably at least twice as long as the axis at right 

 angles to it. 



The observations taken on board the Light Vessels at 4 p. m. also 

 enable the centre to be approximately determined at that hour. "When 

 charted, they indicate that the centre was in about Lat. 21° 10' N. and 

 Long. 88° 30' E. 



The following table shows that this gives consistent results for the 

 direction and distance of the centre from each position : — 





Position. 



Baro- 

 meter. 



Wind. 



1" 



Distance fi'om 

 robable position 

 f centre. 







Lat. 



N. 



Long. 

 E. 



d 



1 

 p 



1 



Weather, 



&c. 

















AO 





Saugor Island 



















Light House 



21° 39' 



88° 5' 



29.270 



N. N. E. 



Mode- 

 rate. 



S. E. 



43 



Overcast. 



Upper Gasper 



















Light Vessel 



21° 31' 



88° 3' 



29-215 



N. E. 



5 



S. E. 



38 



Heavy 



Intermediate 

















sea. 



Light Vessel 



21° 15' 



88° 11 29-155 



N. 



4 



E. S. E. 



21 



Threa- 



















tening- 



Eastern Chan- 

















weather. 



nel Light 



















Vessel 



21° 1' 



88° 12' 



29142 



N. W. 



5 to 8 



E. N. E. 



23 



High sea 

 from 



False Point 

















S. W. 



Light House 



20° 20' 



86° 47' 



29-301 



w. s. w. 



strong. 



E.N. E, 



125 



Overcast. 



These observations also show the weakness of the winds in the 

 western quadrant. The Intermediate Light Vessel, although only 21 

 miles distant from the centre, experienced winds of force 4 at this time, 

 whilst the Pemba, about 200 miles to the south-east, had winds of 

 force 9 to 10. 



Hence, the path of the centre during the day is determined by the 

 positions given in the following table : — 



Hour. 



Latitude. 



Longitude. 



10 A. M 



21° 0' N. 

 21° 3'K 

 21° 10' K 



88° 45' E 



Noon 



88° 40' E 



4 p. M 



88° 30' E 







