the Great Lakes by Tuesday morning and to northern 'New 

 England by Wednesday. Much cooler weather prevailed 

 over the northern States during its passage eastward. Early 

 in the week a second area of high pressure appeared in the 

 Canadian ]!^orthwest, which by Thursday had extended into 

 the central Plain States, upper Mississippi valley and west- 

 ern Lake region, moving thence eastward to the Middle At- 

 lantic States by Saturday. For the week as a whole the 

 mean temperatures were below the normal over all northern 

 and central districts from the Rocky Mountains eastward. 

 Over the southern districts east of the Eocky Mountains and 

 along the Middle Atlantic coast the weekly means were gen- 

 erally near or slightly above the normal. In the east Gulf 

 States showery, unsettled weather, with occasional heavy 

 rains, prevailed during the early part of the week. By the 

 middle of the week the rainy conditions had extended to 

 the Middle Atlantic States, Ohio valley and portions of 

 the Plains region, and during Thursday night and Friday 

 passed over New England as a storm of moderate intensity. 

 For the week as a whole some precipitation was received in 

 nearly all portions of the country, but the amounts varied 

 greatly. 



Week ending July 29. — The week opened with moderate 

 temperatures prevailing in nearly all parts of the country. 

 In !N'ew England and the Middle Atlantic States cool weather 

 continued until near the middle of the week. About Thurs- 

 day cooler weather developed over the Canadian I^orthwest 

 and moved to the Lake region by Saturday. The average 

 temperature for the entire week was above the normal 

 throughout the Great Plains region, Mississippi valley and 

 southern districts. From the Ohio valley and Lake region 

 eastward over the Middle Atlantic and New England States 

 the temperature was almost constantly below the average. 

 Unsettled weather prevailed at the beginning of the week in 

 the Northwest, and showers were rather general during Mon- 

 day and Tuesday along the northern border as far eastward 

 as the upper Lake region. During Wednesday and Thurs- 

 day rainy conditions developed in the Lake region and Ohio 



