Beaufort Wind Scale [PDF]

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BEAUFORT WIND SCALE No. 0 1 2 3 4 5 6 7 8 9 10 11 12



VELOCITY KNOTS 0 1–3 4–6 7 – 10 11 – 15 16 – 20 21 – 26 27 – 33 34 – 40 41 – 47 48 – 55 56 – 65 Above 65



CLOUDINESS 01. AWAN TINGGI (> 6000 m)  CIRRUS (ci)  CIRROCUMULUS (ci cu)  CIRROSTRATUS (ci str)  CUMULUS (cu)



DESCRIPTION Calm Light Air Light Breeze Gentle Breeze Moderate Breeze Fresh Breeze Strong Breeze Moderate Gale Fresh Gale Strong Gale Whole Gale Storm Hurricane



PUTIH BERSIH BULU DOMBA/SISIK IKAN PUTIH MERATA PUTIH TEBAL/BERGUMPAL



02. AWAN MENENGAH (2000 – 6000 m)  ALTOCUMULUS (al cu) KELOMPOK AWAN KELABU  ALTOSTRATUS (al str) KELABU RENDAH / KABUT TIPIS  STRATUS (str ) KELABU MERATA 03. AWAN RENDAH (< 2000 m)  NIMBOSTRATUS (ni str)  STRATOCUMULUS (str cu)  CUMULONIMBUS (cu ni)



MENDUNG HUJAN MENDUNG GELAP SEKALI MENDUNG HITAM BERARAK



SEA DISTURBANCE SCALE No. 0 1 2 3 4 5 6 7 8 9



DESCRIPTION CALM VERY SMOOTH SMOOTH SLIGHT MODERATE RATHER ROUGH ROUGH HIGH VERY HIGH PRECIPITOUS



TENANG BERIAK KECIL BERIAK BEROMBAK KECIL BEROMBAK SEDANG BEROMBAK BESAR BEROMBAK BESAR SEKALI GELOMBANG TINGGI GELOMBANG TINGGI SEKALI GELOMBANG SANGAT TINGGI



HEIGHT OF WAVE IN METRES 0 – 0.1 0.1 – 0.5 0.5 – 1.25 0.5 – 1.25 1.25 – 2.50 2.50 – 4 4 – 6 6 – 9 9 – 14 > 14



VISIBILITY SCALE No. 0 1 2 3 4 5 6 7 8 9



DESCRIPTION DENSE FOG THICK FOG FOG MODERATE FOG MIST OR THIN FOG POOR VISIBILITY MODERATE VISIBILITY GOOD VISIBILITY VERY GOOD VISIBILITY EXCEPTIONAL VISIBILITY



KABUT TEBAL SEKALI KABUT TEBAL KABUT KABUT SEDANG KABUT TIPIS JARAK PANDANG RENDAH JARAK PANDANG SEDANG JARAK PANDANG BAIK JARAK PANDANG BAIK SEKALI JARAK PANDANG SEMPURNA



DISTANCE OF VISION