practicalboatownervidéo

How to read the skies

9 août 2017 · 32 min · 19K vues

Ce que couvre cette vidéo

Weather forecasting for sailors relies on identifying 10 cloud types categorized by altitude and their relationship to pressure systems and fronts.0:21 High-level cirrus, cirrocumulus, and cirrostratus clouds consist of ice and often signal an approaching warm front.2:22 Medium-level altocumulus and altostratus precede rain-bearing nimbostratus, which indicates a warm front is overhead.10:45 Low-level clouds include stratus, stratocumulus, and cumulus, with cumulonimbus representing the most dangerous, energy-dense clouds capable of producing squalls.4:41 As a warm front approaches, barometric pressure drops, winds increase and back, and clouds lower.13:03 Cold fronts bring nimbostratus and potential hidden cumulonimbus, causing pressure to rise and winds to veer after passage.11:27 A reliable rule of thumb for wind strength states that a pressure change of 8 millibars in three hours predicts a Force 8 gale, while a 5-millibar change indicates a Force 6.24:58 Sailors can locate low-pressure centers by standing with their back to the wind; the low pressure lies to the left in the Northern Hemisphere.23:32

Regarder sur YouTube

Plus de vidéos de practicalboatowner

Behind the scenes at the Wayfarer factory – a tour of Hartley Boatsjuil. 2026Testing the Orca Navigation System over 450 milesjuin 2026The super stable Wayfarer Weekender – on test with three kids!déc. 2025Seized Flywheel? How to Use a Three-Legged Puller the Right Way | Practical Boat Ownersept. 2025

De practicalboatowner — voir le bateau, l'équipage et chaque vidéo analysée de la chaîne.

The Sailing Directory Newsletter

Un e-mail avec les meilleures trouvailles de la flotte — les moments, les bateaux et les histoires qui valent la peine d'être regardés. Entrez votre adresse pour recevoir votre propre exemplaire.

Signaler un problème