180 Ninth Annual Report of the 



the 2d to the 12tli, maxima of about 100 degrees being reported" 

 from stations in tlie Genesee Valley on and about the 5th^ 

 From the 12th to the 2Gth the temperature was slightly above 

 normal, but a cooler wave followed on the dates from the 2(]th 

 to 3l8t, with minima under 50 degrees in the cooler sections. 



The precipitation was very unevenly distributed, portions of the 

 western-central section and the St. Lawrence Yalley reporting a 

 drouth, while the ruinfall was the heaviest on the records of many 

 eastern stations. The total of 18.11 inches at Setauket, L. I., is 

 without precedent in this State, so far as known. Phenomenally 

 large amounts in single storms were also registered, as noted in the 

 following table of data. The weather was generally fair during the 

 hot period, or until the 12tli, but thereafter showers were of almost 

 daily occurrence. 



Washing rains, and violent hail, wind and thunder storms were a 

 noteworthy feature of this month's weather. 



Five areas of high and six areas of low pressure were traced in 

 the vicinity of the State on the July weather-maps ; but the atmos- 

 pheric movements were so sluggish and ill defined, during the first 

 half of tlie month especially, that these numbers are only approxi- 

 mate. A decided westward drift of the atmosphere during the 

 heated term is an unusual and noteworthy feature; the subsequent 

 heavy rains l^eing probably due to the large quantities of moisture 

 thus carried inland from the ocean. The following is a brief 

 account of the atmospheric movements: 



Low I (the last of June), on the northeast coast, was followed by 

 westerly winds and fair weather, reinforced by a slight rise of pres- 

 sure from the Southern to Central States on the 1st and 2nd. 



Low II, 2'.'. 6 inches, was a strong depression in the Northwest, 

 but decreased and became general over Canada on the 4th ; there- 

 after shifting over the provinces and vicinity of the Lakes until the 

 12th. 



