SUMMER HOT WINDS ON THE GREAT PLAINS. 311 
curred from the date of its appearance until it moved away 
to the eastward. In locating the position of the low pressure 
on different dates over the eastern slope where reports were 
scattering I have been governed by wind directions and the 
fall in pressure and have thus approximated its position. 
Over three hundred weather charts have been consulted in 
connection with this work. 
Hot Winds, and General Meteorological Conditions 
Prevailing at Date of Their Occurrence. 
1874, July 24, Red Cloud, Nebraska .—“1 p. m., hot winds from the 
southwest; 5 p. m., strong indications of rain; 9 p. m., zigzag lightning, 
heavy thunder in south.” J. H. Kellogg, voluntary observer. 
These hot winds accompanied an area of low pressure 
which appeared over Montana July 21 and moved slowly 
southeast to the central portion of the eastern Rocky Mount¬ 
ain slope by the 23d, where it remained nearly stationary 
until the morning of the 25th, after which it moved rapidly 
eastward. During this time the pressure was 30 inches, 
or slightly above, along the coast of Oregon and Washing¬ 
ton. Partly cloudy to cloudy weather prevailed from the 
Pacific coast to the divide, and the general tendency of the 
atmosphere appeared to be eastward across the divide to¬ 
ward the low pressure area. An area of high pressure cov¬ 
ered the southeastern portion of the country. 
1874, August 9 and 10, Red Cloud , Nebraska .—“Hot winds from the 
south; smoky atmosphere.” J. H. Kellogg, voluntary observer. 
This period of winds accompanied an area of low press¬ 
ure which appeared over northern Montana on August 6, 
following an area of low pressure which was moving east¬ 
ward from the upper Missouri valley. 
The low pressure area moved from northern Montana 
southeast along the eastern Rocky Mountain slope, reaching 
northern Nebraska on the morning of the 9th. It moved 
slowly southward on the 9th, northward on the 10th, and 
