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Departments
> Emergency Preparedness > Winter Storms
> Wind-Chill Conversion Chart
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Wind-Chill Conversion Chart
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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.
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Actual Thermometer Reading |
|
60 |
55 |
50 |
40 |
30 |
20 |
10 |
0 |
-10 |
-20 |
-30 |
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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)
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Shivering (a response by the body which generates heat) does not occur below a body temperature of 90 degrees F.
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Apathy and decreased muscle function, first fine motor and then gross motor functions.
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Decreased level of consciousness with a glassy stare and possible freezing of the extremities.
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Decreased vital signs with slow pulse and slow respiration rate.
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Death.
First Aid Treatment
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Keep the patient dry and remove wet clothing.
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Apply external heat to both sides of the patient using whatever heat sources are available, including the body heat of rescuers.
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If the patient is conscious and in a warm place, have him breathe warm, moist air if available.
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Monitor respiration and pulse and provide artificial ventilation and CPR as required. No one is dead until warm and dead.
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Do not give hot liquids by mouth.
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Do not allow patient to exercise.
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Handle the patient gently.
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If less than 30 minutes from medical facility:
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If more than 30 minutes from medical facility:
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Prevent further heat loss.
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Handle with care.
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Administer oxygen. Follow the protocol.
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Follow re-warming techniques discussed in this chapter. Follow protocol.
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Prepare for CPR.
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Activate the EMS System. |
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