New Yokk Weather Bureau. 223 



12th, at 1 station on the 13th, at 2 stations dn the 14th and also 

 on the 15th, at 10 stations on the 17th, at 3 stations on the 18th, 

 at 14 stations on the 19th. 



Hail fell on the 3d, 17th and 19th. 



Light frosts were general in the interior from the 1st to the 

 5th, and at a few stations on the 16th, 18th and 20th. Killing 

 frosts occurred in exposed localities on the Ist, 2d, 17th and 21st, 

 and were quite general in the interior on the 23d. 



General features of the weather. — This month, although aver- 

 aging slightly cooler than usual, embraced two warm periods; 

 the first extending from the 9th to the 15th, with the general 

 maxima on the 11th when the temperature of the State was 10 

 degrees above the normal. The second, and lesser warm wave 

 covered the period from the 25th until the end of the month. The 

 most noticeable deficiencies of temperature occurred during the 

 first week, and between the 19th and 25th, with killing frosts, 

 which, however, were severe and general only during the latter 

 period. 



The rainfall was slightly in excess over the greater part of the 

 State. General rains were confined mainly to the first and third 

 weeks and the closing days of the month, a heavy local precipi- 

 tation being reported from various sections during each period. 

 The cloudiness was rather above the average for September, and 

 the wind velocity also higher than usual. 



The tropical cyclone which passed over southwestern New 

 York on the night of the 29th and 30th was notably severe, as 

 indicated by the remarks at the close of this summary. 



Seven areas each of high and low pressure, influenced the 

 weather in the vicinity of this State during September. Gener- 

 ally the depressions were not strongly developed, and on ap 

 proaching the coast assumed a trough or V shape, usually extend- 

 ing from the St. Lawrence Valley and Lakes to the southward. 

 Storms of this class passed nearest this State on the 1st, 3d, 6th, 

 11th, 18th, 20th and 26th. The hot wave, culminating on the 

 11th, accompanied the third depression, which extended from 

 Canada to the Mexican Gulf. The succeeding area developed a. 



