New York Weather Bureau. 233 



of the plateaus on the 18th, from 9 stations on the 21st and 22d, 

 and quite generally through the central and northern sections on the 

 28th and 2yth. Along the coast, lakes and in the larger valleys, no 

 killing frosts occurred. 



Hail fell on the 16th and 27th. 



Lunar halos, or coronas, were observed on the 4th and 7th. 



General Features of the Weather. 



September was a pleasant month, with an unusually large percent- 

 age of sunshine and a light rainfall over the greater part of the 

 State. The mean temperature for the State was very nearly normal, 

 a general excess between the 4th and 16th being balanced by a 

 nearly continuous deficiency dui-ing the remainder of the month. 

 The first killing frosts' of the season occurred at a few stations of 

 the plateaus on the 18th and more generally on the 21st, 22cl, 28th 

 and 29th ; but in many of the warmer localities none occurred 

 during the month. A severe drouth was reported from many 

 localities, and notably from western New York, where the rainfall 

 had been light during the greater part of the summer. Thunder 

 showers occurred on 11 days, but few severe local storms were noted. 



Five areas of high and seven areas of low pressure (approxi- 

 mately) affected the weather conditions in this vicinity during 

 September. Four depressions of moderate energy passed eastward 

 over Canada or northern New York, the three remaining lows 

 being confined mainly to the coast section. The most severe of 

 these was the West India hurricane of the 23d to 21th, which, 

 however, spent its force mainly over the ocean. The high pres- 

 sure systems were more strongly developed than during several 

 preceding months ; and owing to their large extent and^ slow 

 movement, dominated the weather conditions during the greater 

 part of the month. The following is a brief account of the 

 atmospheric movements : 



Low I, 30.0 inches, passing off the coast on the 1st and 2d, and 

 gave heavy showers in eastern and central New York and a light 

 rainfall in the western section. 



High I, 30.1 to 30.4 inches, shifted over the Eastern States and 



"Provinces, with increasing intensity, from the Ist to the 7th, 



maintaining fine weather, with rising temperature after the 4th. 



