246 



KAINFALL AT SARK AND ALDERNEY. 



and lightning was noted during the evening of the 7th, but 

 none occurred on the 6th. A terrific thunderstorm with 

 much hail (the worst visitation of the kind at Guernsey 

 for some years) prevailed during the early evening of Tuesday, 

 November 15th. Alderney not only escaped this electrical 

 disturbance altogether, but the day was reported as quite 

 dry in that island. 



December brought no improvement in the weather which 

 continued very unsettled and rainy almost to the end. The 

 passing depressions deposited much less rain than had been 

 the case in October and November, but the type of at- 

 mospheric pressure remained persistently cyclonic, westerly 

 and mild. The Table shows that the normal condition of 

 things was reverted to again as regards distribution of 

 rainfall, Alderney getting the larger and Sark the smaller 

 amount. 



The very unfortunate break in the continuity of the 

 observations at Alderney in October leaves blanks in this 

 paper which it is impossible to fill, as for instance the total 

 of rainfall for the year in that island, the number of rain 

 days and other particulars. And for the same reason there 

 can be no comparison of the year as a whole in the two 

 islands. This much, however, can be gathered from the 

 observations : that Sark continues to hold its own as the 

 driest of the three islands, and that Alderney takes the 

 middle position, leaving Guernsey to head the list as the 

 place of heaviest rainfall. 



I cannot conclude these fragmentary remarks without 

 once more acknowledging my indebtedness to Capt. Henry, 

 of La Vallee du Creux, Sark, and to Mr. W. J. Picot, 

 of Le Huret, Alderney, who have now for five years so 

 devotedly interested themselves in the rainfall of their 

 respective island and sent me regularly weekly returns of 

 the observations taken. 



ABSOLUTE DROUGHTS IN 1910. 



An Absolute Drought, as defined in British Rainfall, 

 is a "period of more than 14 consecutive days, no one of 

 which is a rain day." 



Sark. 



March 19 to April 3 

 Alderney. 

 March 18 to April 2 



16 days. 



16 days. 



