LIVESTOCK-Surging beef prices boost US live cattle futures

* More wintry weather brewing in parts of the Plains * Feeders follow firm live cattle, helped by lower corn * Hog futures' premiums trump mostly higher cash values By Theopolis Waters CHICAGO, March 4 (Reuters) - Chicago Mercantile Exchange live cattle futures rose on Monday after recent wintry weather in the U.S. Plains trimmed cattle supplies and pushed up wholesale beef prices, traders and analysts said. Investors also said another storm developing in the central and we