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20 SAFETY Operator Safety Windchill/Temperature Charts The following information is provided to help you determine when tem- peratures become dangerous for riding. WIND CHILL CHART (_F) WIND CHILL CHART (_C) Estimated Wind Speed in MPH Actual Thermometer Reading (_F) 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 Equivalent Temperature (_F) Calm 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 5 48 37 27 16 6 -5 -15 -26 -36 -47 -57 -68 10 40 28 16 4 -9 -21 -33 -46 -58 -70 -83 -95 15 36 22 9 -5 -18 -36 -45 -58 -72 -85 -99 -112 20 32 18 4 -10 -25 -39 -53 -67 -82 -96 -110 -124 25 30 16 0 -15 -29 -44 -59 -74 -88 -104 -118 -133 30 28 13 -2 -18 -33 -48 -63 -79 -94 -109 -125 -140 35 27 11 -4 -20 -35 -49 -67 -82 -98 -113 -129 -145 40 26 10 -6 -21 -37 -53 -69 -85 -100 -116 -132 -148 Wind Speeds Greater Than 40 MPH Have Little Added Effect Little Danger (For Properly clothed Person) Increasing Danger Great Danger Danger of Freezing Exposed Flesh Estimated Wind Speed in KPH Actual Thermometer Reading (_C) 5 0 -5 -10 -15 -20 -25 -30 -35 -40 Equivalent Temperature (_C) 0 5 0 -5 -10 -15 -20 -25 -30 -35 -40 10 1 -4 -11 -16 -22 -27 -33 -38 -45 -50 20 -4 -9 -17 -23 -29 -36 -42 -48 -54 -61 30 -7 -13 -21 -28 -35 -42 -48 -55 -63 -69 40 -9 -16 -24 -32 -39 -47 -53 -61 -69 -76 50 -11 -18 -26 -34 -41 -49 -57 -64 -73 -80 60 -12 -19 -27 -35 -43 -51 -59 -66 -75 -82 70 -13 -20 -28 -36 -44 -52 -60 -68 -76 -84 Wind Speeds Greater Than 70 KPH Have Little Added Effect Little Danger (For Properly Clothed Person) Increasing Danger Great Danger Danger of Freezing Exposed Flesh |