lower Lake region. Local rains occurred over the north Pa- 

 cific coast and northern Plateau region. There were other 

 light rains in widely separated localities, but no other general 

 storm area. 



Week ending May 15. — During the first few days of the 

 week the temperature over the Great Plains and the Missis- 

 sippi valley increased, and the warm wave moved eastward, 

 giving the highest temperatures of the season over portions 

 of the Ohio, upper Mississippi and lower Missouri valleys, 

 and by the middle of the week the warm wave had advanced 

 eastward to the Atlantic coast. This was followed by cooler 

 weather in the Great Plains by the middle of the week and to 

 the more eastern districts during the latter part. ISTo well- 

 defined storm area crossed the United States during the week, 

 and the precipitation was confined mostly to local thunder- 

 storms. Considerable rain occurred over the Lake region and 

 portions of the Missouri valley on the 11th, and quite heavy 

 falls occurred in central and eastern Texas on the night of 

 the 11th and 12th. During the remainder of the week only 

 light showers occurred, at widely separated points. 



Week ending May 22. — Southerly winds and warm 

 weather prevailed over practically all the eastern portion of 

 the country. By the middle of the week a warm wave of 

 unusual severity was general over practically the entire east- 

 ern portion of the country. West of the Rocky Mountains 

 cold weather prevailed, and this cool wave advanced into the 

 Great Plains and Mississippi valley during the latter part of 

 the week. With the beginning of the week local rains pre- 

 vailed along practically the entire northern boundary, from 

 ISTew England to the Pacific coast, and light showers occurred 

 at points in Florida and near the coast of Georgia and South 

 Carolina. The total fall for the week ranged from about ^2 

 inch to 2 inches, or slightly more, over much of the territory 

 from eastern Texas northward to the Canadian boundary. 

 There was practically no rain in the south Atlantic coast 

 States, and little from the Ohio valley eastward to l^ew Eng- 

 land and the Atlantic coast. 



Weelc ending May 29. — At the beginning of the week 

 warm weather was general from the Mississippi valley east- 



