CHICAGO, Sept 30 (Reuters) - U.S. supplies of corn and wheat were higher than a year ago but stocks remained tight at a time when export disruptions stemming from Russia's invasion of Ukraine have left buyers scrambling to find grain, the government said on Friday.

Domestic stocks of corn stood at 1.377 billion bushels and wheat stocks were 1.776 billion bushels as of Sept. 1, according to the U.S. Agriculture Department's Quarterly Stocks report. A year earlier, the domestic stockpile contained 1.235 billion bushels of corn and 1.774 billion bushels of wheat.

Analysts had been expecting the report to show wheat stocks of 1.776 billion and corn stocks of 1.512 billion. (Reporting by Mark Weinraub)