On Tue, 7 Jan 2014 05:20:02 -0800 (PST), "
wrote:

On Sunday, January 5, 2014 3:41:27 PM UTC-5, Ed Pawlowski wrote:
On 1/5/2014 9:41 AM, wrote:

Snip

The reported windchill is directly dependent on the wind.
Let's say the weatherman was giving his report and you missed
what he said about the wind. Let's look at two different
reports:

A - It's currently 35F and it's going to drop to 20F overnight
with a windchill of 20F.

B - It's currently 35F and it's going to drop to 20F overnight
with a windchill of 0F.

You have a drafty crawlspace or an unheated cabin. Would you
think there is more reason to be concerned about pipes freezing
overnight in case A or B?

Either scenario could result in frozen pipes. What's your point?

Snip

BS. The windchill is directly dependent on windspeed. It can
be used as a proxy for windspeed. If the forecasted temp is
20F and the windchill is also 20F, what does that tell you about
the wind?: no wind. If it's forecsted to be 20F with a windchill
of 0F, that tells you there is going to be a strong wind and you
should be more concerned about pipes freezing in a draft crawspace,
unheated cabin, etc.

The only difference in either scenario is time. Wind chill is
irrelevant.