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<br />within 1 km of the surrounding peaks. .A saturated layer was encountered gr~ater <br />than 90 percent of the time in this lowest 1 km when supercooled wate~r was pre- <br />~ent._The depth. of the supercool~d water bearing layers was greater than 0.5km <br />over 50 percent of the time) while some layers were as deep as 2.0'km. <br />Saturated layers were found to exi~t most often between -8 and -10 OCt although <br />they were often present over a much wider temperature range. Saturation was <br />occasionally indicated at temperatures as cold as -24 oC. <br /> <br />7. COMPARISON WITH OTHER STUDIES <br /> <br />Previous SCPP studies on supercooled water distributions in winter storms <br />occurring from 1978/79 to 1979/80 (Heggli et al.) 1983) showed that the largest <br />supercooled wate~ contents were associated with post-frontal convective radar <br />patterns. Supercooled water was most prevalent 7 to 10 h after the passage of <br />the 700 mb trough. Our study indicated that the largest instantaneous quan- <br />tities of supercooled water were associated with convection usually occurring in <br />the post-frontal region. Heggli et ale postulated that additional supercooled <br />water may have existed in the lowest 1 km above the terrain. O!Jr study suggests <br />this to be true and that these conditions can occur for long periods of time in <br />the pre-frontal as well as post-frontal environments of particular storms. <br /> <br />Radiometric measurements of supercooled water in storm systems over other <br />mountain ranges of the western United States have shown many features similar to <br />the data presented here. For example) Rauber et ale (1986) analyzed the super- <br />cooled water structure of ten storm systems that occurred over the Park Range of <br />northwest Colorado. They noted an inverse relationship between supercooled <br />water and precipitation rate in eac~ of their case studies) a relationship also <br />suggested in many SCPP storms. These authors also found larger supercooled <br /> <br />30 <br />