312 
CLINE. 
appeared central over northern Iowa on the morning of the 
11th, after which it moved rapidly eastward. During this 
time the pressure w r as above 30 inches over the north Pa¬ 
cific coast, with partly cloudy to cloudy weather and an 
apparent general tendency of the atmosphere to cross the 
divide in'an easterly direction toward the low pressure area. 
The pressure was above 30 inches over the southeastern por¬ 
tion of the country. 
1881, June 10 to 20, Wellington , Kansas .—“ The most noteworthy feat¬ 
ures of the climate during this month, as recorded by the tri-daily ob¬ 
servations, were its periods of hot winds, noted in the second ten days of 
the month, blowing from the southwest. 
“The rainfall for the entire month, as recorded, was 3.18 inches on 
five days. 
“The direction of the upper currents of air were noted blowing from 
the west constantly from the 12th to the 30th; from the southwest from 
the 4th to the 12th, and from the northwest the first three days of the 
month.” John H. Wolfe, voluntary observer. 
This period of hot winds accompanied an area of low 
pressure which appeared over Montana on June 6, and moved 
southeast along the eastern Rocky Mountain slope, reaching 
northwestern Kansas on the 11th, after which it moved rap¬ 
idly to the northeast and disappeared over the lakes on the 
13th. During this time the pressure along the Pacific coast 
ranged about 30 inches. The general tendency of the at¬ 
mosphere was ill defined, but apparently across the divide 
in an easterly direction toward the low pressure area, and 
the weather to the w 7 est of the divide w T as partly cloudy to 
cloudy. 
1881, July 19 and 20, Wellington , Kansas .—“Hot winds four hours on 
the 19th and twenty-four hours on the 20th. 
“ Rainfall for the month measured 3.21 inches. Rain fell on six days. 
‘ 4 The direction of the upper strata of air was constantly from the west 
throughout the entire month.” J. H. Wolfe, voluntary observer. 
These winds accompanied an area of low pressure, which 
made its appearance over Montana on the morning of July 
17 and moved southeast, reaching northwestern Nebraska 
