A-38
Danger from freezing of exposed esh.Immersion foot (trench foot) may occur at any point on this chart.Estimated
wind speed
(in MPH)50 50 48 40 36 32 30 28 27 26
40 40 37 28 22 18 16 13 11 10
30 30 27 16 9 4 0 -2 -4 -6
20 20 16 4 -5 -10 -15 -18 -21 -21
10 10 6 -9 -18 -25 -29 -33 -35 -37
0 0 -5 -24 -32 -39 -44 -48 -51 -53
-10 -10 -15 -33 -45 -53 -59 -63 -67 -69
-20 -20 -26 -46 -58 -67 -74 -79 -82 -85
-30 -30 -36 -58 -72 -82 -88 -94 -98 -100
-40 -40 -47 -70 -85 -96 -104 -109 -113 -116
-50 -50 -57 -83 -99 -110 -118 -125 -129 -132
-60 -60 -68 -95 -112 -124 -133 -140 -145 -148
Actual Thermometer Reading (°F)
EQUIVALENT CHILL TEMPERATURE (°F)Calm(^510152025303540)
Wind speeds greater than 40 MPH have little
additional
effect
LITTLE DANGERUnder 5 hours with
dry skin.
Maximum danger of
false sense of
security.
INCREASING
DANGER
Flesh may freeze within one minute.GREAT DANGERFlesh may freezewith in 30 seconds.Appendices: Wind Chill Chart