WEATHER TYPES ON THE PACIFIC COAST. 85 



Straits of Juan de Fuca, the glass going down to 29.00. 

 Again almost disappearing, it came in upon the AVashing- 

 ton Territory coast the 26th, the barometer falling this time 

 to 29.15. On the 27th it was not to be seen, and if it passed 

 eastward it did so far bej'^ond the northern boundary. 



During this time severe washouts occurred in Southern 

 California, and the telegraph lines were everywhere pros- 

 trated. 1 find this type is not a frequent one, and comes 

 only in such intensity as described at long intervals. The 

 great storms of 1875 and 1879 are tlie only ones that can be 

 ranked with this one. See Plate lY. 



The next distinct type is the 



SOUTH PACIFIC ANTI-CYCLONIC, 



which appears as a moderate high along the southwestern 

 California coast. It is peculiar on account of the rains 

 which accompany it, being one of those types, which bring 

 out many inquiries from those having and observing barom- 

 eters, asking the question, how it is that we have rain 

 with so high a barometer. It creates isobars somewhat 

 perpendicular to the coast, bringing in the rain-bearing, 

 southerly winds at San Francisco. It is noteworthy that 

 any type exhibiting isobars perpendicular to the coast line 

 is almost sure to bring rain, while if the isobars are parallel 

 to the coast, fair weather follows. This type was in exis- 

 tence from March 31st to April 2d, and from April 7th to 

 17tli. During its prevalence a faint low may exist in the 

 north Pacific. Rain occurs in the interior California valleys 

 and northward, also in the vicinity of Los Angeles. Should 

 the general pressure fall considerably below the normal, 

 but with the relatively high barometer continuing in the 

 same region, gales with thunder and hail storms are fre- 

 quent in southern California. TJie winds are not strong 

 north of San Francisco, except when the barometer becomes 

 very low, and such cases are few. This type disappears by 

 the movement of the high along the coast into Oregon, and 



