Beaufort Scale & Noise Codes

The Beaufort Scale

The Beaufort Scale describes the wind strength numerically with reference to discernible indicators.

We have abbreviated it on the drag and drop data forms as follows.

Code	Meaning
0	Dead calm. Smoke rises vertically
1	Direction shown by some smoke drift but not by wind vane
2	Wind felt on face, leaves rustle. Ordinary vanes moved
3	Leaves & small twigs in constant motion. Light flag extended
4	Raises dust & loose paper. Small branches moved
5	Small trees with leaves begin to move
6	Large branches in motion. Whistling in telephone wires.

Noise Codes

We use this scale to indicate the level of interference experienced by an attentive observer.  We have abbreviated it on the drag and drop data forms as follows.

Code	Meaning
0	Quiet
1	Some noise , e.g, distant traffic, dog barking, but not distracting.
2	Significant noise but not constant enough to reduce detection.
3	Constant noise, e.g heavy traffic, roaring creek.
4	Unable to hear any call, e.g a passing train.