This document describes the fourth summer of field operations for the National Hail Research Experiment (NHRE). This year the level of field activity was considerably less than previous years. The main purpose of the summer field operations was the test of new and modified equipment under actual ... Show moreThis document describes the fourth summer of field operations for the National Hail Research Experiment (NHRE). This year the level of field activity was considerably less than previous years. The main purpose of the summer field operations was the test of new and modified equipment under actual weather conditions. The specific objectives were to conduct an operational test and evaluation of new and improved observational systems; and collect research data if and when essential observation systems were operational. Show less