*2.2. Data Analysis*

2.2.1. Level 1: Historically Documented Extreme Precipitation Events and Sorghum Yield in Texas

The High Plains and Low Rolling Plains climatic regions of Texas received an extreme rainfall of 508 mm (20 inches) over 26 km<sup>2</sup> (10 square miles) area and 254 mm (10 inches) over 26,000 km2 (10 thousand square miles) from 1 August to 4 August in 1978. The East Texas and Upper Coast climatic regions of Texas received an extreme rainfall of 1000 mm (40 inches) for about 26 km<sup>2</sup> (10 square miles) area and 254 mm (10 inches) for 26,000 km<sup>2</sup> (10 thousand square miles) from 24 July to 28 July in 1979. Randall County had a storm during 26 May to 27 May 1978. The rainfall amount during the period averaged 100 mm to 254 mm (4 in. to 10 in.) on the High Plains. Out of all the extreme precipitation events documented, only the May 1978 storm in Randall County fell within the sorghum-growing season. Therefore, only the details of the May 1978 storm will be included for further analysis under this category [15,16].
