Weather

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Contents

Cloud Identification

Excellent explanation of clouds

On that site it would be good to take a close look at the cloud types associated with thunderstorm types at:

Thunderstorms

and with severe weather at:

Severe Weather

a few more photos of thunderstorm clouds appear at:

Basics

These are the clouds that MAY throw out strong, erratic dangerous winds. There are lesser rain clouds that can still hit you with a 15 to 20 kt. gusts that can be dangerous under some circumstances. These clouds may not be nearly as dramatic in appearance as some of those that appear above. Make a point of learning about relevant weather considerations where you kiteboard.

Weather Hazards

Wind Names

How to determine wind strengths

Wind speed and visual clues

Below you can find the Beaufort scale and some visual clues to how strong the wind is personally I use the following:

  • A few white caps: 12-15 knots
  • Many white caps but no sand blowing about the beach: 15-20 knots
  • A lot of sand blowing like a moving river over the beach: 20-30 knots
  • Sand blowing in clouds like a fog and lots of spray getting blown off the waves: 30-40 knots
  • When the wind start pushing me around and it gets hard to stand straight: 40+ knots.

The Beaufort Scale (BFT)

Force Speed (knots) Description Sea state

  • Force 4: 11-16 knots, moderate breeze, small waves, frequent white caps
  • Force 5: 17-21 knots, fresh breeze, moderate rather long waves, many white caps, some spray
  • Force 6: 22-27 knots, strong breeze, some large waves, extensive white foam crests, some spray
  • Force 7: 28-33 knots, near gale, sea heaped up, streaks of foam blowing with the wind
  • Force 8: 34-40 knots, gale Fairly high and long waves, crests breaking into spin drift, blowing foam in prominent streak

Note

Be aware that white caps can indicate wind direction, the frequent they are the stronger the wind. Consistent water texture will indicate stable wind.

Wind Statistics

Worldwide in 10m height

World 10m.jpg

Worldwide in 80m height

World 80m.jpg

Africa in 80m height

Africa 80m.jpg

Asia in 80m height

Asia 80m.jpg

Australia in 80m height

Australia 80m.jpg

Europe in 80m height

Europe 80m.jpg

North America in 80m height

North America 80m.jpg

South America in 80m height

South America 80m.jpg

Wind Gradient

Meterknots 773.gif


Wind Forecast Sites

Argentina

Australia

Austria

Barbados

Belgium

Brazil

Canada

Canary Islands

Caribbean

Croatia

Czech Republic

Denmark

Dominican Republic

France

Germany

Greece

Ireland

Israel

Italy

Mexico

Morocco

Netherlands

Netherlands Antilles

New Zealand

Norway

Poland

Portugal

South Africa

Spain

Sweden

Switzerland

Turkey

UK

Ukraine

Uruguay

USA

Venezuela

Personal tools