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WxSim & NWS Forecast Comparison

National Weather Service (NW), Actual Observed (Act), WxSim Generated (WS)

Updated: 05-29-19 at 6:00 am
Goal Forecast Day Day +1
± 2.5° F High Low High Low
Date NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS
05-29-19 95       90 70       69 94       90 68       68
05-28-19 95 2.7 92.3 -3.3 89 70 -2.3 72.3 -5.3 67 96       91 70       68
05-16-19 82 -7.9 89.9 -7.9 82 59 -8.1 67.1 -7.1 60 87 -5.3 92.3 -8.3 84 64 -8.3 72.3 -10.3 62
05-06-19 79 9.4 69.6 11.4 81 58 -13.9 71.9 -17.9 54 82 -7.9 89.9 -7.9 82 61 -6.1 67.1 -12.1 55
05-08-18 81 8.3 72.7 10.3 83 58 -13.9 71.9 -13.9 58 84 14.4 69.6 14.4 84 61 -10.9 71.9 -11.9 60
05-07-18 81 -2.5 83.5 -2.5 81 57 -0.9 57.9 -1.9 56 80 7.3 72.7 9.3 82 59 -12.9 71.9 -14.9 57
05-06-18 78 -0.4 78.4 -0.4 78 57 -2.5 59.5 -5.5 54 80 -3.5 83.5 -3.5 80 57 -0.9 57.9 -5.9 52
05-05-18 81 1.8 79.2 2.8 82 56 -4.7 60.7 -1.7 59 78 -0.4 78.4 -0.4 78 57 -2.5 59.5 -4.5 55
05-04-18 85 2.2 82.8 0.2 83 62 -0.1 62.1 0.9 63 81 1.8 79.2 5.8 85 59 -1.7 60.7 -0.7 60
05-03-18 59 -25.9 84.9 -2.9 82 85 29.9 55.1 4.9 60 59 -23.8 82.8 3.2 86 85 22.9 62.1 -1.1 61
05-02-18 84 -0.9 84.9 -4.9 80 58 2.5 55.5 0.5 56 85 0.1 84.9 0.1 85 61 5.9 55.1 2.9 58
05-01-18 81 -1.1 82.1 -5.1 77 56 2.1 53.9 0.1 54 84 -0.9 84.9 -1.9 83 58 2.5 55.5 -0.5 55
04-30-18 75 -2.6 77.6 -6.6 71 50 3.5 46.5 -0.5 46 80 -2.1 82.1 -6.1 76 56 2.1 53.9 -1.9 52
04-29-18 69 -1.9 70.9 -0.9 70 44 0.7 43.3 -1.3 42 73 -4.6 77.6 -5.6 72 51 4.5 46.5 -1.5 45
04-28-18 74 -3.3 77.3 -6.3 71 45 -2.2 47.2 -2.2 45 68 -2.9 70.9 -1.9 69 44 0.7 43.3 -1.3 42
04-27-18 71 -1.2 72.2 -5.2 67 50 0.1 49.9 -5.9 44 74 -3.3 77.3 -7.3 70 45 -2.2 47.2 -4.2 43
04-26-18 65 5.9 59.1 -4.1 55 50 -0.1 50.1 -1.1 49 71 -1.2 72.2 -2.2 70 49 -0.9 49.9 -0.9 49
04-25-18 68 0.4 67.6 2.4 70 53 4.6 48.4 -0.4 48 65 5.9 59.1 1.9 61 50 -0.1 50.1 -0.1 50
04-24-18 68 0.1 67.9 -2.9 65 53 0.2 52.8 -4.8 48 69 1.4 67.6 1.4 69 52 3.6 48.4 -0.4 48
04-23-18 66 3.7 62.3 -0.3 62 54 -3.9 57.9 -4.9 53 68 0.1 67.9 1.1 69 53 0.2 52.8 -0.8 52
04-22-18 62 1.7 60.3 -2.3 58 54 -2.5 56.5 -1.5 55 67 4.7 62.3 10.7 73 54 -3.9 57.9 -4.9 53
04-21-18 71 -1.7 72.7 -5.7 67 52 -5.9 57.9 -9.9 48 63 2.7 60.3 -6.3 54 52 -4.5 56.5 -7.5 49
04-20-18 68 0.1 67.9 -6.9 61 46 4.7 41.3 -5.3 36 71 -1.7 72.7 -6.7 66 51 -6.9 57.9 -11.9 46
04-19-18 63 -5.2 68.2 1.8 70 40 3.2 36.8 6.2 43 69 1.1 67.9 0.1 68 44 2.7 41.3 -1.3 40
04-18-18 81 -3.4 84.4 -9.4 75 51 -10.1 61.1 -11.1 50 62 -6.2 68.2 -4.2 64 40 3.2 36.8 0.2 37
04-17-18 70 -4.9 74.9 -11.9 63 52 3.1 48.9 -3.9 45 80 -4.4 84.4 -6.4 78 53 -8.1 61.1 -3.1 58
04-16-18 53 3.4 49.6 2.4 52 38 5.8 32.2 -0.2 32 70 -4.9 74.9 -12.9 62 52 3.1 48.9 -5.9 43
04-15-18 64 -8.7 72.7 -11.7 61 39 1.3 37.7 2.3 40 54 4.4 49.6 1.4 51 39 6.8 32.2 -2.2 30
04-14-18 81 0.7 80.3 1.7 82 60 -1.2 61.2 5.8 67 63 -9.7 72.7 -1.7 71 41 3.3 37.7 7.3 45
04-13-18 78 -1.4 79.4 -1.4 78 59 -2.1 61.1 0.9 62 79 -1.3 80.3 -0.3 80 60 -1.2 61.2 3.8 65
04-12-18 76 -2.8 78.8 -4.8 74 51 2.3 48.7 3.3 52 78 -1.4 79.4 0.6 80 60 -1.1 61.1 0.9 62
Results NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS
# Succ 15     11 16     14 12     13 12     14
% Succ 50.0       36.7 53.3       46.7 41.4       44.8 41.4       48.3



Updated: 05-28-19 at 3:00 pm
Goal Forecast Day Day +1
± 2.5° F High Low High Low
Date NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS
05-28-19 70       94 96       73 70       94 93       72
05-16-19 82 -7.9 89.9 -7.9 82 59 -8.1 67.1 -7.1 60 87       84 64       62
05-07-18 82 12.4 69.6 -15.6 54 56 -15.9 71.9 10.1 82 80 -9.9 89.9 -34.9 55 58 -9.1 67.1 15.9 83
05-06-18 78 -0.4 78.4 -26.4 52 57 -1.7 58.7 20.3 79 80 10.4 69.6 -18.6 51 56 -15.9 71.9 9.1 81
05-05-18 81 1.8 79.2 -22.2 57 57 -3.7 60.7 16.3 77 78 -0.4 78.4 -23.4 55 56 -2.7 58.7 21.3 80
05-04-18 62 -20.8 82.8 -24.8 58 81 19.0 62.0 21.0 83 59 -20.2 79.2 -21.2 58 80 19.3 60.7 19.3 80
05-03-18 85 0.1 84.9 -29.9 55 59 4.0 55.0 29.0 84 84 1.2 82.8 -23.8 59 63 1.0 62.0 20.0 82
05-02-18 84 -0.9 84.9 -29.9 55 59 3.5 55.5 27.5 83 85 0.1 84.9 -28.9 56 59 4.0 55.0 30.0 85
05-01-18 58 -24.1 82.1 -29.1 53 84 30.1 53.9 28.1 82 58 -26.9 84.9 -29.9 55 85 29.5 55.5 28.5 84
04-30-18 50 -27.6 77.6 -29.6 48 81 34.5 46.5 31.5 78 56 -26.1 82.1 -28.1 54 82 28.1 53.9 28.1 82
04-29-18 44 -26.9 70.9 -29.9 41 74 30.7 43.3 29.7 73 49 -28.6 77.6 -32.6 45 79 32.5 46.5 31.5 78
04-28-18 77 -0.3 77.3 -30.3 47 45 -1.8 46.8 23.2 70 68 -2.9 70.9 -26.9 44 44 0.7 43.3 30.7 74
04-27-18 49 -23.2 72.2 -28.2 44 74 24.2 49.8 20.2 70 46 -31.3 77.3 -33.3 44 67 20.2 46.8 21.2 68
04-26-18 51 -8.1 59.1 -9.1 50 70 20.1 49.9 20.1 70 49 -23.2 72.2 -24.2 48 73 23.2 49.8 21.2 71
04-25-18 68 0.4 67.6 -21.6 46 53 4.7 48.3 13.7 62 65 5.9 59.1 -8.1 51 51 1.1 49.9 16.1 66
04-24-18 53 -14.9 67.9 -11.9 56 69 16.2 52.8 19.2 72 52 -15.6 67.6 -14.6 53 66 17.7 48.3 18.7 67
04-23-18 54 -8.3 62.3 -7.3 55 69 11.1 57.9 11.1 69 53 -14.9 67.9 -15.9 52 70 17.2 52.8 13.2 66
04-22-18 62 1.7 60.3 -7.3 53 56 -0.5 56.5 7.5 64 68 5.7 62.3 -7.3 55 55 -2.9 57.9 14.1 72
04-21-18 53 -19.7 72.7 -20.7 52 63 6.9 56.1 0.9 57 53 -7.3 60.3 -5.3 55 63 6.5 56.5 2.5 59
04-20-18 43 -24.9 67.9 -28.9 39 72 30.7 41.3 25.7 67 51 -21.7 72.7 -24.7 48 64 7.9 56.1 1.9 58
04-19-18 63 -5.2 68.2 -32.2 36 39 2.5 36.5 29.5 66 70 2.1 67.9 -28.9 39 45 3.7 41.3 24.7 66
04-18-18 53 -31.4 84.4 -29.4 55 61 1.8 59.2 6.8 66 40 -28.2 68.2 -27.2 41 68 31.5 36.5 30.5 67
04-17-18 70 -4.9 74.9 -27.9 47 51 2.9 48.1 28.9 77 80 -4.4 84.4 -31.4 53 50 -9.2 59.2 4.8 64
04-16-18 52 2.4 49.6 -15.6 34 37 4.9 32.1 32.9 65 69 -5.9 74.9 -29.9 45 52 3.9 48.1 28.9 77
04-15-18 66 -6.7 72.7 -27.7 45 40 2.3 37.7 18.3 56 53 3.4 49.6 -9.6 40 41 8.9 32.1 35.9 68
04-14-18 81 0.7 80.3 -17.3 63 61 0.6 60.4 5.6 66 65 -7.7 72.7 -33.7 39 37 -0.7 37.7 13.3 51
04-13-18 78 -1.4 79.4 -20.4 59 61 0.5 60.5 10.5 71 81 0.7 80.3 -17.3 63 64 3.6 60.4 3.6 64
04-12-18 52 -26.8 78.8 -29.8 49 78 29.3 48.7 28.3 77 59 -20.4 79.4 -22.4 57 78 17.5 60.5 12.5 73
04-11-18 46 -23.4 69.4 -31.4 38 75 31.3 43.7 23.3 67 52 -26.8 78.8 -38.8 40 76 27.3 48.7 26.3 75
04-10-18 65 18.4 46.6 -8.6 38 42 -27.5 69.5 -2.5 67 69 -0.4 69.4 -29.4 40 46 2.3 43.7 30.3 74
04-09-18 60 -0.5 60.5 -21.5 39 46 -2.4 48.4 14.6 63 65 18.4 46.6 -10.6 36 41 -28.5 69.5 -2.5 67
Results NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS NW Diff Act Diff WS
# Succ 11     0 9     2 6     0 5     3
% Succ 36.7       0.0 30.0       6.7 20.7       0.0 17.2       10.3