Understanding Easterly Waves and Troughs

The video tutorial explores easterly waves in the Caribbean, focusing on their characteristics, formation, and impact. It explains the role of prevailing northeast trade winds and how easterly waves develop from low-pressure areas. The video also discusses the structure of these waves, including the trough, divergence, and convergence zones, and their associated weather conditions. Viewers learn about the impact of easterly waves on weather patterns and suitable activities during different phases. The tutorial concludes with an analysis of synoptic charts to identify easterly waves.

What is the primary characteristic of the northeast trade winds in the Caribbean?

• They bring stable weather conditions.

• They blow from the southwest.

• They originate from the equator.

• They are dry throughout the year.

How do easterly waves typically move across the Caribbean?

• From south to north

• From west to east

• From east to west

• From north to south

What is the main difference between an easterly wave and a hurricane?

• Hurricanes are smaller in scale.

• Easterly waves have a closed isobaric pattern.

• Hurricanes move from west to east.

• Easterly waves do not have a closed isobaric pattern.

What is the role of the trough in an easterly wave?

• It is the driest part of the wave.

• It is the axis of low pressure.

• It is the point of highest pressure.

• It causes air to flow outward.

What happens in the zone of divergence in an easterly wave?

• Air flows outward and descends.

• Air flows inward and rises.

• Heavy rainfall occurs.

• Clouds form rapidly.

Before the trough arrives, what are the weather conditions like?

• Windy with thunderstorms

• Humid with fog

• Cloudy with heavy rain

• Calm with clear skies

During the passage of the trough, what is the weather like?

• Dry and cool

• Windy with heavy rain

• Calm and sunny

• Foggy and humid

After the trough passes, what is the typical wind direction?

• From the southeast

• From the northwest

• From the southwest

• From the northeast

What does a synoptic chart help identify in relation to easterly waves?

• The bend in isobars indicating a trough

• The temperature changes

• The wind speed

• The humidity levels

On a weather map, how is the trough of an easterly wave emphasized?

• With a yellow line

• With a green line

• With a red line

• With a blue line