Tuesday, February 14, 2012

Winter running clothes part 2

After running last Saturday in -3 degree weather with windchill, I realized that I missed a couple of colder weather running items, namely my trusty ear warmers (never wear full hats) and a fleece over my long sleeve sheet. With the wind and running in flat Ohio it was so c-o-l-d. I would sqinch my face and it felt frozen. But, after about .5 miles, it was beautiful and so invigorating.

The North Face Ear Gear

Love these Northface ear warmers.

Below is a Windchill chart that helps you determine how cold it really is outside. I felt last Saturday was the coldest outside it's been for a long time!

Wind Chill Chart shows temperature and wind speed at which frostbite can set in. See wind chill calculator at bottom of page for equivalent.

The NWS Windchill Temperature (WCT) index uses advances in science, technology, and computer modeling to provide an accurate, understandable, and useful formula for calculating the dangers from winter winds and freezing temperatures. The index:

  • Calculates wind speed at an average height of five feet, typical height of an adult human face, based on readings from the national standard height of 33 feet, typical height of an anemometer
  • Is based on a human face model
  • Incorporates heat transfer theory, heat loss from the body to its surroundings, during cold and breezy/windy days
  • Lowers the calm wind threshold to 3 mph
  • Uses a consistent standard for skin tissue resistance
  • Assumes no impact from the sun (i.e., clear night sky).

Windchill Calculator:

Air Temperature

Wind Speed

Wind Chill Temperature:

Note: Windchill Temperature is only defined for temperatures at or below 50 degrees F and wind speeds above 3 mph. Bright sunshine may increase the wind chill temperature by 10 to 18 degrees F.

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