USCG Meteorology and Weather 2

Question 1

A tropical cyclone in the Atlantic or eastern Pacific with sustained winds of 74 mph or greater is classified as?

Accepted Answer

A hurricane

Answer

A tropical cyclone in the Atlantic or eastern Pacific is called a hurricane when sustained winds reach 74 mph (64 knots) or greater.

Question 2

What is the 'dangerous semicircle' of a hurricane in the Northern Hemisphere?

Accepted Answer

The right side of the storm's path

Answer

The right semicircle of a Northern Hemisphere hurricane is considered dangerous because storm winds add to the forward speed of the storm, increasing wave heights and surge.

Question 3

What does GMDSS weather broadcast format NAVTEX provide to mariners?

Accepted Answer

Printed text weather forecasts and navigational warnings

Answer

NAVTEX broadcasts meteorological warnings, navigational warnings, and search-and-rescue information as printed text via a dedicated 518 kHz frequency.

Question 4

Sea fog most commonly forms when?

Accepted Answer

Air and sea temperatures are nearly equal and humidity is high

Answer

Sea fog forms when warm, humid air is chilled to its dew point upon contact with a cooler sea surface, which most often occurs when air and sea temperatures are close.

Question 5

What is a 'gale warning' issued for?

Accepted Answer

Winds 34–47 knots

Answer

The National Weather Service issues a gale warning when sustained winds of 34 to 47 knots are expected in marine areas.

USCG - United States Coast Guard Practice Test

USCG - United States Coast Guard Practice Test

USCG Meteorology and Weather 2