314 TRANSACTIONS OF THE 



Weather for April, 1887. 



Following is the special bulletin for April issued from the Signal Service 

 Headquarters at San Francisco, by Lieutenant J. E. Maxfield, U. S. A., 

 Signal Officer and Assistant in charge: 



The number of days on which rain fell during April was slightly in 

 excess of the usual number, although the rainfall was not large. Rain 

 fell in Northern California on the sixth, seventh, eighth, ninth, twelfth, 

 thirteenth, twentieth, and twenty-ninth ; in Southern California on the sev- 

 enth, ninth, tenth, eleventh, fourteenth, fifteenth, and thirtieth; in Oregon 

 and Washington Territory on the first, second, fourth, fifth, sixth, seventh, 

 tenth, twelfth, sixteenth, nineteenth, twentieth, twenty-first, twenty-eighth, 

 and twenty-ninth. Two storms accompanied by dangerous winds were 

 traced during the month. The first passed from the ocean to the east over 

 British Columbia on the first and second, causing high winds on the coast 

 of Washington Territory; the second appeared off the northern coast of Cal- 

 ifornia, on the eighth, and passed to the southeast, accompanied by severe 

 gales and a copious rainfall over California. 



TEMPERATURE. 



The temperature during the month was about normal in all the Pacific 

 Coast districts. The most marked departures were as follows: Above the 

 normal, San Diego 1°. Yuma 1°, Red Biuff 1.1°; below the normal, Port 

 Angelos 1.7°, Spokane Falls 1°, Roseburg 1.1°, Keeler 1.7°. 



RAINFALL. 



The rainfall for the month was about the average rainfall for April in 

 all districts. A slight deficiency occurred in the extreme northern portion 

 of California and in the vicinity of Puget Sound. Elsewhere the rainfall 

 was slightly above the normal. The following table shows in detail the 

 amount of rain for the month, and for the season up to May first: 



