Windsock Comparison

What you need to know about windsock safety.

One Minute Video Shows Why

Safer – Stronger – Smarter

This video shows how the Wind Tracker Windsock is a safer ultra sensitive windsock system that can detect winds as low as 1 mile per hour. Now for the first time you can see the wind direction, speed and wind shear without the costly frames, cages, and maintenance of old style socks. Our complete set cost less than old style windsocks and are field rated for evacuation, low wind tactical operations, skydiving, and sports to list a few.

Wind Tracker Windsocks can be mounted to your existing poles or select one of our fiberglass telescoping Wonder Poles®. Every wind Tracker Windsock System is made in the USA!

Ordinary WindsocksOrdinary Windsocks

Fail in low wind

When winds are below 8 miles per hour the ordinary windsock is not able to accurately show the direction or speed of the wind.

The open-ended design of an ordinary sock lets the air move into and through the sock with very little resistance until a sufficient volume of wind force is built up in the sock. By the time the sock “fills” up, wind speeds can be in excess of 8 mile per hour. This is because the air is not only rushing into the sock but it is also rushing out the other end. When the sock is filled with wind that same wind force restricts it from turning to show the immediate and accurate direction of the wind. Variables in wind speed and direction are not usually visible in an ordinary sock design. The basic construction of an ordinary windsock only allows the wind to move into the one opening at the hoop side of the sock. Wind coming from a direction other than the hoop opening cannot enter the sock until it turns into the correct position.

Ordinary windsock problems.Accurate measurements not possible with tube windsocks:

Lower wind speeds are not visible in older style tube windsocks because the air moves into the opening and moves out of the opposite end before there is enough force to lift and fill the sock’s main body. Once the tube windsock is full, additional wind speed is not accurately portrayed because now the sock is full, and any additional force exerted within the sock or along the sides and body, are minimized by the air force within the windsock.

 

What Makes Old Style Windsocks Dangerous?

Standard Windsock Safety In Low Wind Conditions.

Abstract Lines IG1, Daycock JH, Deaves DM. J Hazard Mater.2001 May 30;83(3):153-79

Guidelines for the inclusion of low wind speed conditions into risk assessments.

Although they are not often considered in risk assessments or safety cases, low wind speed conditions are likely to produce many of the worst case dispersion scenarios, especially for situations where dense vapour clouds would form close to the ground. The results of previous review and validation studies, undertaken by the authors for the UK Health and Safety Executive, have been drawn together in this paper to provide guidelines for the practical application of appropriate modelling of scenarios involving low wind speeds within quantified risk assessments. The production of these guidelines has been achieved by using example risk assessments covering the storage of chlorine, bromine, LPG and Liquid Oxygen, for each of which sensitivity studies were also undertaken. These demonstrated that the inclusion of low wind speeds has varying effects, depending on the material considered, which could be as much as 1-2 orders of magnitude. Most importantly, it also showed that, when low wind speeds are included, it is not only their dispersion effects but also their effects on source term and impact on the population, which need to be considered to ensure that the calculated risks are neither overly conservative nor optimistic.

The above information illustrates the importance of having a windsock system that can detect low winds. Ordinary airport windsocks cannot detect low wind direction and speed.

How To Place Your Windsock

21' fiberglass windsock pole.The Wind Tracker

Detects Low Wind

The Wind Directional Wind System flag construction and patented pivotal harness allow the animation of the wind by using wind load factor or the flag, and a multi-directional movement made possible by our patented pivotal harness system. For the first time you can “see” the wind. Air moves “against” the fabric not through it and therefore the flag/sock will be moved in a direction relative to the force and direction of that wind.

Animate the wind at any speed:

The patented harness keeps the Wind Tracker against the wind and creates a full resistance so the slightest breeze creates visible movement in the flag. As the air currents move against, and along, the flag it rises and falls with side-to-side movement as the wind changes directions. When the flag attempts to “dive off”, it is pulled back into the winds force by the harness cords. This patented harness keeps the flag in position and allows it to animate the wind at any speed, and at all times.

Designed for emergency evacuation situations. It can detect winds below 1 mile per hour.

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