Wind Chill & Velocity Charts

Wind Chill & Velocity Charts

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These Wind Chill & Velocity Charts can be very useful
when you are bundling up for a day on the ranch.

Wind Chill
MPH Temperatures in degrees Fahrenheit
calm 50 40 30 20 10 -10 -20 -30 -40
48 37 27 16 -5 -15 -26 -36 -47
10 40 28 16 -9 -24 -33 -46 -58 -70
15 36 22 -5 -18 -32 -45 -58 -72 -85
20 32 18 -10 -25 -39 -53 -67 -82 -96
25 30 16 -15 -29 -44 -59 -74 -88 -104
30 28 13 -2 -18 -33 -48 -63 -79 -94 -109
35 27 11 -4 -20 -35 -51 -67 -82 -98 -113
40 26 10 -6 -21 -37 -53 -69 -85 -100 -116
Wind speeds greater than 40 mph have little added effect.

 

Wind Velocity
Velocity (MPH) Velocity (Knots) Description Symptoms
0-1 0-1 Calm Smoke rises vertically. Water is like a mirror.
1-3 1-3 Light air Direction of wind shown by smoke drift, but not by wind vanes. Ripples with the appearance of scales are formed.
4-7 4-6 Light breeze Wind felt on face; leaves rustle; ordinary vanes moved by wind. Small wavelets, still short, but more pronounced.
8-12 7-10 Gentle breeze Leaves and small twigs in constant motion; wind extends light flag. Large wavelets.
13-18 11-16 Moderate breeze Raises dust and loose paper; small branches are moved. Small waves, becoming larger.
19-24 17-21 Fresh breeze Small trees in leaf begin to sway; crested wavelets form on inland waters.
25-31 22-27 Strong breeze Large branches in motion; whistling heard in wires; umbrellas used with difficulty.
32-38 28-33 Near gale Whole trees in motion; inconvenience felt when walking against the wind.
39-46 34-40 Gale Breaks twigs off trees; generally impedes progress.
47-54 41-47 Severe gale Slight structural damage occurs.
55-63 48-55 Storm Seldom experienced inland; trees uprooted; considerable structural damage occurs.
64-72 56-63 Violent storm Very rarely experienced; accompanied by wide-spread damage.
73-up 64-71 Hurricane A severe tropical cyclone originating in the equatorial regions of the Atlantic Ocean or Caribbean Sea, traveling north, northwest, or northeast from its point of origin, and usually involving heavy rains.
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