What is 20 mph on the Beaufort scale?
What is 20 mph on the Beaufort scale?
JetStream Max: Beaufort Wind Force Scale
| Beaufort Wind Force | Wind Average | Speed Range |
|---|---|---|
| 2 | 5 kt 6 mph 9 km/h | 4-6 kt 4-7 mph 6-11 km/h |
| 3 | 9 kt 10 mph 16 km/h | 7-10 kt 8-12 mph 12-19 km/h |
| 4 | 13 kt 16 mph 24 km/h | 11-16 kt 13-18 mph 20-28 km/h |
| 5 | 19 kt 22 mph 34 km/h | 17-21 kt 19-24 mph 29-38 km/h |
What are the Beaufort scale categories?
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- Light winds at 1-5 kph (1-3 mph).
- Light breeze at 6-11 kph (4-7 mph).
- Gentle breeze at 12-19 kph (8-12 mph).
- Gentle breeze at 20-28 kph (13-18 mph).
- Fresh breeze at 29-38 kph (19-24 mph).
- Strong breeze at 39-49 kph (25-31 mph).
- Moderate gale at 50-61 kph (32-38 mph).
- Fresh gale at 62-74 kph (39-46 mph).
What is the function of Beaufort scale?
The Beaufort scale is a scale for measuring wind speeds. It is based on observation rather than accurate measurement. It is the most widely used system to measure wind speed today. The scale was developed in 1805 by Francis Beaufort, an officer of the Royal Navy and first officially used by HMS Beagle.
What is 7 on the Beaufort scale?
Modern scale
| Beaufort number | Description | Wind speed |
|---|---|---|
| 6 | Strong breeze | 10.8–13.8 m/s |
| 7 | High wind, moderate gale, near gale | 28–33 knots |
| 32–38 mph | ||
| 50–61 km/h |
How do you read a Beaufort scale?
How to read the Beaufort scale chart?
- 0 — calm. Wind speed: < 0.5 m/s (< 1 mph).
- 1 — light air. Wind speed: 0.5–1.5 m/s (1–3 mph).
- 2 — light breeze. Wind speed: 1.6–3.3 m/s (4–7 mph).
- 3 — gentle breeze.
- 4 — moderate breeze.
- 5 — fresh breeze.
- 6 — strong breeze.
- 7 — high wind, moderate gale, near gale.
What is Level 7 wind?
7-10. Gentle Breeze. Large wavelets, crests begin to break, scattered whitecaps. Leaves and small twigs constantly moving, light flags extended. 4.
