Position and intensity of thunderstorms in northeastern Colorado, 1963

CER63RAS72.December 1963.Under contract no. CST-7419

Progress report on hydrologic studies of the upper Colorado River: prepared for presentation at Sixteenth Annual Meeting, Colorado River Water Forecast Committee: 10 April 1961

CER61RAS23.10 April 1961

Preliminary study of the relations between hail and thunderstorm reflectivity structure

CER62RAS65.September 1962.Prepared during a 15 day active duty tour at Det 6, 24th Weather Squadron, Lowry Air Force Base 30, Colorado.Includes bibliographical references

Hail genesis areas in and near northeastern Colorado

Prepared for the Crop-Hail Insurance Actuarial Association.October, 1961.CER61RAS58.Includes bibliographical references.Sponsored by National Science Foundation NSF G 17964.Sponsored by Crop-Hail Insurance Actural Association

Analysis of meteorological data for the upper Colorado River basin: progress report

CER61RAS45.A summary of the verbal report presented to the Engineering Committee of the Upper Colorado River Basin on 20 July 1961

Analysis of synoptic data for selected hail days in northeastern Colorado, 1961

CER63RAS34.August 1963.Research supported by the Atmospheric Science program, National Science Foundation.Under NSF grant G-17964

Hydraulic research at Colorado State University

CER61RAS73.December 1961

Discussion of R. H. Douglas' Recent hailstorm research: a review

CER62RAS9.Prepared for American Meteorological Society Conference on Severe Storms, Norman, Oklahoma, 13 February 1962.Includes bibliographical references.Research on hailstorms is hampered by the fact that quantitative climatological data on hail events are limited. Recent research studies have developed new techniques to obtain such quantitative data, including use of passive recorders for recording characteristics of hailfalls. Through use of such equipment in Colorado hail studies, it was found that while hailstorms with large stones are spectacular, they are relatively rare. Most of the crop damage from hail in Colorado probably results from hailstones smaller than 1. 5 cm diameter. Hailstone crystal structure from Colorado hailstones suggests an average process by which the stones form at warm temperatures, then grow to radii of 2 to 3 cm in a "dry" environment, and finally grow to radii in excess of 3 cm in a "wet" environment. It was found that successively larger fractions of the total volume of hail were formed in a "wet" environment as the season progressed from May to July. It was found that conventional hail forecasting techniques suffer an inability to distinguish clearly between severe hail and heavy rain. The occurrence of strong winds aloft was found to be associated with severe hail

Summary of data from test cases of seeding thunderstorms with silver iodide in northeastern Colorado, 1962-63-64

CER64RAS35.December 1964.Progress report, NSF GP-2594, research supported by the Atmospheric Science Program, National Science Foundation.Includes bibliographical references.Under NSF Grant GP-2594

Analysis of data on hailfalls as background for the design of an experiment in hail modification

CER63RAS-JDM35.August 1963.Prepared for publication in the Conference Review of the American Meteorological Society Third Conference on Severe Local Storms, November 12-14, Champaign-Urbana, Illinois.Research supported by the Atmospheric Sciences Program, National Science Foundation.Includes bibliographical references.Under NSF grant G-23706