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<br />SEPTEMBER 1988
<br />
<br />MARK F. HEGGLI AND ROBERT M. RAUBER
<br />
<br />1015
<br />
<br />The highest terrain in the vicinity of Kingvale is 2.7
<br />km. The rawinsonde measurements presented in sec-
<br />tion 5 imply that supercooled water-bearing cloud lay-
<br />ers are generally within 1 km of the highest terrain.
<br />This is the layer most influenced by forced ascent. The
<br />temperatures of water saturated layers were often found
<br />to be within the range required for silver iodide acti-
<br />vation. These data indicate that, based on the presence
<br />of supercooled water in storms and the altitude and
<br />temperature of water-saturated layers, conditions
<br />amenable to ice crystal growth clearly exist in many
<br />Sierra Nevada winter storms.
<br />
<br />Acknowledgments. This work was supported in part
<br />by U.S. Bureau of Reclamation Contract 4-CR-81-
<br />03860 to Electronic Techniques, Inc. The authors
<br />would like to thank all the participants in the SCPP
<br />program for their contributions to this work. Special
<br />thanks are in order to Ms. Carol Wilcox, who drafted
<br />the figures and typed early versions of the manuscript,
<br />and to Ms. Bernie Culver, who typed the final manu-
<br />script.
<br />
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