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<br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />'. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />B. The Colorado Avalanche Center issues an avalanche forecast warnmg for <br />avalanche areas located in the target areas, or <br />C. The Director of the Colorado Water Conservation Board or the project sponsors <br />order suspension of seeding for any reason. <br /> <br />In addition, seeding is to be suspended at any time the snowpack water equivalents at <br />selected target SNOTEL sites exceed: 175% of average on Dec. 1st, 175% of average on <br />Jan. 1st, 160% of average on Feb. 1 st, 150% of average on Mar. 1st and 140% of average <br />on Apr. 1st. <br /> <br />Table 2-1 <br />NA WC Winter Cloud Seeding Criteria <br /> <br />1) CLOUD BASES ARE BELOW THE MOUNTAIN <br />BARRIER CREST. <br /> <br />2) LOW-LEVEL WIND DIRECTIONS AND SPEEDS <br />THAT WOULD FAVOR THE MOVEMENT OF THE <br />SILVER IODIDE PARTICLES FROM THEIR RELEASE <br />POINTS INTO THE INTENDED TARGET AREA. <br /> <br />3) NO LOW LEVEL ATMOSPHERIC INVERSIONS OR <br />ST ABLE LAYERS THAT WOULD RESTRICT THE <br />VERTICAL MOVEMENT OF THE SILVER IODIDE <br />PARTICLES FROM THE SURFACE TO AT LEAST <br />THE -5 C (23 F) LEVEL OR COLDER. <br /> <br />4) TEMPERATURE AT MOUNTAIN BARRIER CREST <br />HEIGHT IS -5 C (23 F) OR COLDER. <br /> <br />5) TEMPERATURE AT THE 700-MB LEVEL <br />(APPROXIMATELY 10,000 FEET) IS WARMER THAN <br />-15 C (5 F). <br /> <br />3 <br />