1912.] 



BAILIWICK RAINFALL. 



395 



Notice the very small rainfall at Alderney and Portland 

 Bill on the 1st and 2nd and the big measurement at Sark and 

 Jersey on the 1st. The Alderney total for the week is in 

 keeping with that at Portland Bill, while Jersey, on the south 

 side of the Channel, experienced the heaviest fall of all, 

 followed by Sark as a very good second. The effect of this 

 peculiarity in the rainfall was to alter the normal relative 

 positions of the islands as regards the June aggregate, Sark, 

 usually the driest place, registering the biggest total. As a 

 matter of fact Capt. Henry's total for Sark exceeded the 

 Guernsey (Les Blanches) amount by 0*18 in., and that at 

 Alderney by no less than 1 73 in. 



June was unsettled all through, a cyclonic westerly type 

 of pressure distribution prevailing from beginning to end, but 

 onward from the 7th rainfall though frequent whs not by any 

 means heavy. 



July was the warmest month of 1912, but very cold at 

 that. As a summer month nothing of good can be said of it — 

 more days were cold than warm, no seasonable hot interval 

 was experienced, the period was unsettled all through and 

 became very wet at the close. On the evening of Saturday, 

 the 13th, the islands were visited by a thunderstorm which 

 deposited 0*55 in. of rain at Guernsey (Les Blanches), 0*63 in. 

 at Sark, and 0*62 in. at Alderney. On Friday, the 26th, a 

 day of little wind, and that little variable in direction — in 

 fact with everything pointing to the presence of a shallow 

 depression in our neighbourhood if not actually over us — one 

 of those big differences of rainfall occurred in the islands 

 which is worth putting on record. The measurements on the 

 morning of the 27th were as follows : — 



GUERNSEY. SARK. ALDERNEY. JERSEY. 



0-38 in 0-52 in 0'95 in 1*46 in. 



In connection with the downpour at Jersey (St. Aubin's) a 

 thunderstorm is reported to have occurred, and thunder was 

 heard at Guernsey during the evening. 



The next day (Saturday, the 27th) a cloud burst of 

 exceptional violence deluged Guernsey and to a lesser extent 

 Sark. At Guernsey, in something like 15 minutes, beginning 

 at 7 p.m., from three-quarters of a inch to one inch of rain 

 fell at Les Blanches. Many shops in St. Peter-Port were 

 flooded, and at the Vauxlaurens walls were washed away by 

 the rush of water. This day's measurements, as given below, 

 were again very different everywhere — in fact the order of the 

 previous day was exactly reversed. 



GUERNSEY. SARK. ALDERNEY. JERSEY. 



1*02 in 0-53 in 0'21 in. 0-18 in. 



