Return Period Duration (h) Observed CrcmCcsm CrcmCgcm
Case 1 Case 2 Case 3 Case 1 Case 2 Case 3 Case 1 Case 2 Case 3
2 yr 3 31.1 31 32.5 33.1 34 34.6 35 34.7 37.2
6 38.3 37.1 39.5 40 39.3 41.9 43.3 42.4 44.9
12 43.5 43.8 45.1 44.8 45.8 47.3 52 52.4 52.6
24 53.3 50.6 52.4 61.9 58.4 57.9 65.8 57.3 60.9
5 yr 3 42 42.1 46.7 42.9 43.8 48.9 47.2 47.1 55
6 52.6 53.7 55.3 53.9 55.9 58.3 60.7 61.8 63.3
12 56.9 59.2 61.9 60.1 62.4 64 65.1 69.2 71.4
24 72 68.7 70.6 80.9 73.7 76.1 85.3 82.5 81.8
10 yr 3 51.1 51.5 56.2 51.7 51.8 58.3 60.1 60.6 67.8
6 63.5 65.9 65.8 65.2 67.9 69 74.1 76 75.8
12 68 71 73 72.2 74.4 75 75.9 80.5 83.8
24 83.3 82.4 82.7 89.1 85 88 94.2 99.1 95.9
25 yr 3 65.6 66.5 68.1 66.3 64.6 69.6 83.6 86.3 83.4
6 79.2 82 79.1 82.6 83.9 82.5 93.3 94.8 91.5
12 85.2 88 87.1 89.4 90.8 88.9 92.8 96.4 99.2
24 96.5 102.2 97.9 95.3 103 103 102.8 120.3 113.2
50 yr 3 79 80.3 76.9 81 76.5 78.1 107.6 113.1 95.4
6 92.3 94.1 89 98.3 95.5 92.6 109 108.9 103.1
12 100.7 102.2 97.6 103.4 104.1 99.4 108.2 109.6 110.9
24 105.7 118.8 109.2 97.8 119 114.2 108.1 136.3 126.4
100 yr 3 94.9 99 85.6 99 92.1 86.8 137.5 150.8 107
6 106.7 106.2 98.7 116.8 107.4 102.4 127 123 114.6
12 118.9 117.9 107.9 118.1 117.9 109.5 126.2 124.5 122.3
24 114.5 137.1 120.4 98.8 137.6 125.3 112.6 152.7 139.1
Table 3: Design storm depths (in mm) calculated from observed data and NARCCAP future datasets.