the eastward of the Eockj Mountains, save along the extreme 

 northern border and over the Atlantic coast from Maryland 

 northward. Over New England and the northern portions 

 of the Middle Atlantic States the w^eek was almost continu- 

 ously cool. Local showers with occasional heavy thunder- 

 storms prevailed at the first of the week from the lower Mis- 

 sissippi valley northeastward to ISTew England, and light 

 showers occurred locally in the northern portions of the 

 Rocky Mountains and Plateau regions. During Wednes- 

 day and Thursday a low barometric pressure area moved rap- 

 idly from the northern Rocky Mountains to the Lake region 

 and New England, accompanied by local with occasional 

 heavy rains in the Ohio valley and Lake region. This was 

 followed by another low area, which brought more or less 

 rain over the same districts during Friday and Saturday. 

 Near the end of the week local rains occurred in the Middle 

 Atlantic States, upper Ohio valley and the northwest, and at 

 points in the southern Rocky Mountain region ; elsewhere 

 during the latter part of the week, especially over the Great 

 Plains region and in the south, there was a very general 

 absence of rain. The areas with 1 inch or more were con- 

 fined principally to the northern tier of States, from the 

 eastern portion of the Dakotas to New England, and to the 

 lower Mississippi valley and the far northwest, and there 

 were scattered amounts of near 1 inch at points in the Rocky 

 Mountain region. 



Week ending September 9. — Continued w^arm weather 

 marked this week. After the first few days the cool weather 

 that had prevailed over the Lake region and New England 

 gave way, and during the remainder of the week high tem- 

 peratures prevailed in practically all portions of the country 

 to the eastward of the Rocky Mountains. For the week as a 

 whole the mean temperatures were above the normal in all 

 districts to the westward of the Rocky Mountains. Mini- 

 mum temperatures were generally above 50° from the Great 

 Plains eastward to the Atlantic, but over the far western dis- 

 tricts they were below 40° in many sections, and near or 

 below freezing at exposed points in the middle Plateau and 

 northern mountain regions. No well-developed rain area 



