Met

In an anticyclone in the northern hemisphere, the surface wind circulation is...

clockwise, with the wind blowing across the isobars at an angle towards the lower
pressure.

On the Beaufort scale, force 5 is described as a....

fresh breeze

When tides are classed as being diurnal, there will be....

one high water and one low water each tidal day.

On the Beaufort scale, force 7 is described as a...

near gale.

From the following, what would be the maximum effect of barometric pressure on tidal heights?
0.3 meters

Which of these pressures would be described as "average" in temperate latitudes?

1010mb

If the distance between two consecutive isobars (drawn at intervals of 4mb) is found to be 100 n.m. and the latitude is 50 deg, what is the geostrophic wind speed?

30 kts

An anticyclone is an area of....

high pressure, descending air, and light winds.

Assuming a forecast wind of say, 30 kts, with the maximum wind duration and maximum fetch, what would be the value of the significant wave height?

4.9

Referring to the weather map "Metmap 3", estimate the pressure gradient between positions C and D. Use the distance scale on the map.

3 mb in 100 miles.

Which of these is the correct pressure sequence associated with a weather "warm front"

In advance - steady fall ; during the passage - fall ceases ; in the rear - little change or slow fall.

What weather conditions are likely to result from the movement of warm air mass over a relatively colder sea surface?

Fog

Referring to the weather map "Metmap 3", the forecast states "the low pressure system to the NW of the British Isles is moving slowly SE." How would you expect the wind change at position X?

To WSW, increase to 35 knots.

In a weather forecast what wave height is indicated by the term 'moderate sea'?

1.25 - 2.5m

Referring to the weather map "Metmap 3", estimate the pressure gradient between positions A and B. Use the distance scale on the map.

14 mb in 100 miles.

Referring to the weather map "Metmap 4", a typical value for the low pressure would be...

980 mb

What distance must visibility be reduced to before water vapour is classed as fog?

2 km

On the Beaufort scale, hurricane force corresponds to wind ......

force 12.

Referring to the weather map "Metmap 2" for 1200 May 15th, what is the predominant weather system over the UK at 1200 June 26th?

An anticyclone.

Referring to the weather map "Metmap 4", if you were at position 2, you would   expect... 

the wind to veer to the West, visibility to improve

Referring to the weather map "Metmap 2" for 1200 May 15th, Westerly winds are being experienced in which of the following?

Position C.

South Westerlies are the general surface wind in which of the following latitudes? 

40 - 60 degrees.

A squall line of sharp changes of wind, is very often associated with ......

cold front.

What do tightly spaced isobars indicate?

Strong winds

Referring to the weather map "Metmap 4", the line at position 4 is probably...

the trailing part of the cold front of a previous low

A typical value for a high pressure centre in the North Atlantic is...

1030mb

What is 'ice blink'?

A glare on the horizon perhaps indicating ice ahead

Which of these is the correct sequence of visibility associated with a weather "cold front"?

In advance - usually poor ; during the passage - first bad than good ; in the rear - usually very good except in showers.

During which month do most tropical storms form in the northern hemisphere?

(C) August

At what temperatures can ice start to form on a vessel's superstructure?

-2°C

A falling barometer is an indication of .

bad weather to come.

On this weather routeing chart, what is indicated?

Radio calling in point, way or reporting point showing direction of vessels movement.

Which of these is the correct weather sequence associated with a "warm front"?

In advance - continuous rain; during the passage - rain almost or completely stops; in the rear - mainly cloudy and slight rain.

When visibility is 1km or less, it is known as 

fog.

On this weather routeing chart, what does this figure indicate?

Pipeline

Steaming South at 10 knots, you estimate the wind speed from the surface as 15 knots.  Smoke from the funnel is going away to port directly to abeam. What is the approximate true direction of the wind? 

WNW

On the Beaufort scale, storm force corresponds to wind ......

force 10 and above.

Which of these atmospheric layers is closest to the earth?

Troposphere

Referring to the weather map "Metmap 1" for 0700 July 4th, if you are on passage through the Dover Straits, the wind can be expected to...

Veer SW

Referring to the weather map "Metmap 4", the line at position 2 is called

he cold front.

At what altitude do altostratus clouds generally form?

4500 - 11000m

Referring to the weather map "Metmap 1" for 0700 July 4th, identify the predominant pressure system over the UK.

A secondary depression.

The cause of ice accumulation on a ship is due to freezing of sea spray at a temperature
--5 degrees C

Which of these is the correct sequence of weather associated with a "cold front"?

n advance - usually some rain and perhaps thunder ; during the passage - rain, often heavy ; in the rear - heavy rain for a short period than fair 

Sea fog is likely to form when the wind changes direction to bring air from a...

warm land over a cold area of sea.

Referring to the weather map "Metmap 2" for 1200 May 15th, the pressure system affecting position C is a...

frontal trough.

Referring to the weather map "Metmap 2" for 1200 May 15th, winds at position A will be forecast as...

light, variable.

A depression is formed when:

Warm, damp air meets cold, dry air

The temperature of the wet bulb thermometer falls according to the rate of...

evaporation.

Referring to the weather map "Metmap 2" for 1200 May 15th, at position D, the winds can be expected to...

be affected by sea breezes.

Which of these is the correct pressure sequence associated with a weather " cold front "?

In advance - fall ; during the passage - sudden rise ; in the rear - rise continues more slowly.

What level of visibility does 'poor' indicate in a weather forecast?

Between 1000 - 2000m

In temperate latitudes, an air temperature of 25 degrees Celsius represents....

a hot summer's day.

Wind force 10 correspond to wind speed of ...

48 - 55 knots.

What is normally the safest angle for a vessel to steer into steep waves?

60°

Wind force 5 corresponds to a wind speed of ..

17 - 21 knots.

Tropical maritime air is usually:

Cold, wet and stable

Referring to the weather map "Metmap 4", a typical value for the high pressure

1025 mb

Referring to the weather map "Metmap 2" for 1200 May 15th, the pressure system over the UK will probably, in the next 12 hours....

remain stationary.

Referring to the weather map "Metmap 3", estimate the wind direction at position 3

SSW

Referring to the weather map "Metmap 1" for 0700 July 4th, what is the pressure system over the UK most likely do over the next 12 hours?

Move eastwards.

Buys Ballot's Law says that if a seafarer faces the wind in the southern hemisphere then the area of low pressure will be:

Directly ahead

If you see the term 'falling quickly' in a weather forecast, what does this mean the air pressure has done

It has fallen by between 3.6 - 6 mb in the last three hours

Referring to the weather map "Metmap 3", in which of the following positions he wind be will lightest?

Position 1.

Which is the peak month for hurricanes in the northern hemisphere?

september

If a meteorological depression has a large warm sector, it has a tendency to ....

deepen.

Referring to the weather map "Metmap 3", what is the forecast wind direction and at position Z?

strength

SW 35 knots

Fast moving high clouds are an indication of ....

bad weather to come

Referring to the weather map "Metmap 4", the line at position 1 is called...
the warm front

The visual range corresponding to the term "moderate visibility" used in weather bulletins

2 to 5 nautical miles.

Referring to the weather map "Metmap 3", in which of the following positions will the wind be strongest?

Position 5.

Referring to the weather map "Metmap 3", estimate the pressure at position C.

1019 mb

In the northern hemisphere, which direction will the wind normally be from just before a cold front arrives?
SSE

Arctic air is usually:

Freezing and sharp

Referring to the weather map "Metmap 4", the area at position 3 is called

the warm sector

Referring to the weather map "Metmap 4", if you were at position 5, you would expect...

light SW winds, good visibility.

In the northern hemisphere, which is the most dangerous part of a storm in relation to the direction in which it is moving?

ts right hand side

What is water content of the atmosphere (usually expressed as a percentage) known as?

Humidity

If the atmosphere contains less water vapour than it is capable of holding at that
temperature, it is said to be...

saturated.

When a marine thermometer is used to take air temperatures, it should be hung...

in a screen sited to windward.

On this weather routeing chart, what does this figure indicate?

Single Occulting

In which area will the isobars be spaced closest, given the wind speeds indicated? 
40 kts

What is the quantity of water vapour present in the atmosphere called?

Humidity

Which of these is not a meteorological classification of an air mass?

Tropical maritime

Referring to the weather map "Metmap 2" for 1200 May 15th, the predominant weather system at position G is...

a weak low

What is the name given to an elongated area of low pressure extending outwards from a depression?

A trough.

If an observer is facing the wind in the northern hemisphere, where does the low pressure

To the right

On this weather routeing chart, what does the upper figure indicate?

The number of observations.

What wind speeds are likely when a weather forecast predicts an imminent Force 8 gale?

Over 34 knots

Referring to the weather map "Metmap 2" for 1200 May 15th, on passage up the English Channel, a vessel will probably experience...

fog or poor visibility.

Referring to the weather map "Metmap 4", if you were at position 1, you would expect... 

low clouds and rain, but improving over the next few hours

What speed could gusts of wind reach in a Force 8 gale?

Over 43 knots

What does this indicate on a wether map?

Cold front

Above what speed does a tropical depression have to travel to become classed as a tropical storm?

74 kph