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Wind-Chill Conversion Chart

When winter winds howl, you hear warnings about the wind chill factor. Wind chill shows how cold the wind makes exposed flesh feel and is a good indication of how much danger you face of frostbite or hypothermia. The lower the chill, the more you should bundle up.

How to find wind chill

Draw a line down from the temperature on top. Draw another line across from wind speed on the left. Where they meet is how cold it feels.

Actual Thermometer Reading
60 55 50 40 30 20 10 0 -10 -20 -30

Wind Velocity: Reduced Temperature Due to Wind-Chill

5 mph

58

53 48 37 27 16 6 -5 -15 -26 -36
10 mph 54 50 40 28 16 4 -9 -21 -33 -46 -58
15 mph 51 46 36 22 9 -5 -18 -36 -45 -58 -72
20 mph 47 42 32 18 4 -10 -25 -39 -53 -67 -82
25 mph 43 38 30 16 0 -15 -29 -44 -59 -74 -88
30 mph 40 34 28 13 -2 -18 -33 -48 -63 -79 -94
35 mph 36 30 27 11 -4 -20 -35 -49 -67 -82 -98
40 mph 32 28 26 10 -6 -21 -37 -53 -69 -85 -100
 
STAGES OF HYPOTHERMIA (General Body Cooling)
  • Shivering (a response by the body which generates heat) does not occur below a body temperature of 90 degrees F.
  • Apathy and decreased muscle function, first fine motor and then gross motor functions.
  • Decreased level of consciousness with a glassy stare and possible freezing of the extremities.
  • Decreased vital signs with slow pulse and slow respiration rate.
  • Death.
First Aid Treatment
  • Keep the patient dry and remove wet clothing.
  • Apply external heat to both sides of the patient using whatever heat sources are available, including the body heat of rescuers.
  • If the patient is conscious and in a warm place, have him breathe warm, moist air if available.
  • Monitor respiration and pulse and provide artificial ventilation and CPR as required. No one is dead until warm and dead.
  • Do not give hot liquids by mouth.
  • Do not allow patient to exercise.
  • Handle the patient gently.
  • If less than 30 minutes from medical facility:
    • Prevent further heat loss.
    • Handle with care.
    • Administer oxygen. Follow local protocol.
    • Activate EMS System.
  • If more than 30 minutes from medical facility:
    • Prevent further heat loss.
    • Handle with care.
    • Administer oxygen. Follow the protocol.
    • Follow re-warming techniques discussed in this chapter. Follow protocol.
    • Prepare for CPR.
    • Activate the EMS System.

 

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