I 2T : S E G T F E S T SURVEY BULLETIN 
Vol. 10 Summary for 1930, ITo. 10 
INTRODUCTION 
The ye^r 1330 had as its most conspicuous feature a prolonged and 
di sastrbus" drought, probably the worst since 1901. All the country east 
of the Rockies except the extreme Ivortheast and Southeast was more or 
less affected; the Ohio River and lower Mississippi River Valleys, and 
Maryland and Virginia, suffered most. 'later supply, as well as crons, 
was affected and economic effects were profound. It seems likely that 
effects upon insects and other animals, and upon plants, will "be narked, 
and that they tiay in some cases persist several years. This effect has 
already beebme evident in the case of the Mexican bean beetle, the cod- 
ling moth, the oriental fruit moth, and the European corn borer. 
January was below normal in temperature over most of the country, 
especially in the West; a large area from northern Texas to eastern 
Washington was 10 degrees or more below normal. The cold was steady and 
snow cover was rather general, and winter grain suffered little. Rain- 
fall was heavy in the lower Mississippi River and Ohio River Valleys. 
February was almost the reverse of January in temperature, with the prai- 
rie States far above normal; moisture was deficient in the Great plains, 
the Rockies, and the south Atlantic region. 
March temperature was near normal; but rainfall was variable, and 
deficient over most of the country. Seasonable rains failed to occur in 
the plains States, to the great detriment of winter wheat in the southern 
part. April was well above normal in temperature, especially in the Great 
plains; moisture was variable and generally deficient. The drought was 
relieved late in the month in many are- s west of the Mississippi, but 
continued in the Ohio River and lower Mississippi River Valleys, and mois- 
ture became scanty in the Middle Atlantic States. May was marked "oy vari- 
able temperatures, averaging not far from normal; by deficient rainfall in 
the middle and south Atlantic region, the Ohio River and middle Missis- 
sippi River valleys, and the lower Great Lakes region, with more plentiful 
rains to the west and. south, and excessive rainfall in the lower Missis- 
sippi River Valley. 
June temperatures were not far from normal; rainfall was deficient -in 
the Ohio River valley and almost absent in the lower Mississippi River 
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