THE RAINFALL OF GUERNSEY FOR THE 

 YEAR 1918. 



BY A. COLLENETTE, F.C.S. 



The year 1918 has proved to be one of deficient rainfall, 

 having yielded 32*20 inches against an average of 36*64. 



The first four months were dry and had a combined total 

 of 7*04 in., the average of these four months being 1 1*29, hence 

 the deficiency was 4*25 in. ; thus these four months practically 

 gave the deficit of the year. June's total was the least and is 

 worthy of remark for it narrowly escaped being the driest 

 June on record ; indeed the total 0*3 has not been beaten for 

 dryness during the whole 76 years, for the previous driest, 1868, 

 gave the same total, the difference between these two Junes 

 being that 1918 had seven wet days and that of 1868 only two, 

 1868 must be considered the drier. 



The other months with deficient falls were August, 

 October and November. October, usually the wettest month of 

 the year, was this year drier than the months July, September 

 and December. November's deficit also was a large one. 



This year's wet July came within half an inch of its record, 

 but in no case was there a new record in the months' totals. 



The returns from the sun-stations show that the distribution 

 of the rainfall over the island has, this year, some remarkable 

 features. 



There is a general agreement this year with the results of 

 former years, as shown by the map given with last year's report, 

 (see Billet), but in one month there was a departure from the 

 former experience inasmuch as one month, September, gives 

 higher totals than St. Martin's Road for no fewer than three 

 stations. 



The total collected at St. Martin's Road was not reached 

 by any other station, but two were not far below, viz., Grange 

 Road 31*24 and the Rohais with 30*40; but the total of the 

 lowest, Mont-Saint 24*40, is a surprise, for instead of a 

 difference of 4 inches there is one of nearly 8 inches. 



Only one fall of over an inch was recorded and that 

 ranged in amount in the different parts of the island between 

 1*75 and 1*54. 



