Weather 2

What is the average speed of a stationary front?

0 TO -5 KTS

The average slope of the warm front has a ratio of ______, and always slopes over the (cold/warm) air mass

1:200 COLD

The average speed of a cold front is about _________ knots and the average slope is (steep with a ratio of 1:80 / shallow with a ratio of 1:200)

25-35 KNOTS STEEP WITH A RATIO OF 1:80

What type of weather is usually associated with a stable warm front?

A LARGE AREA OF ST, NS, AS CLOUDS WITH RAIN AND POSSIBLE FOG

What four discontinuities (differences) must be present for the meteorologist to draw frontal symbol on the weather chart?

A. TEMP CHANGE B. DEWPOINT (MOISTURE) CHANGE C. PRESSURE CHANGE D. WIND SHIFT

Where would the weather, associated with a stable warm front, occur?

AHEAD OF THE WARM FRONT

What are two important elements of preflight planning if your flight is in the vicinity of a warm front?

AN ALTERNATE AIRPORT AND PROPER FUEL REA'S

The coldest air will always be (ahead/behind) a cold front

BEHIND

What is the procedure for flying in the vicinity of an occluded front?

CIRCUMNAVIGATE OR LAND

The frontal inversion of any font always slopes over the (warm/cold) air and the precipitation associated with it normally occurs in the (warm/cold) air

COLD COLD

if an occluded front symbol on a weather map is an extension of the cold front symbol, it is a _____ type occlusion. If an occluded front symbol is an extension of the warm front symbol, it is a _____ type occlusion.

COLD WARM

Cold fronts are usually associated with (cumuliform/stratiform) clouds which tend to produce a (narrow-band/wide-spread area) of clouds and precipitation

CUMULIFORM NARROW-BAND

What other weather hazard should a pilot be aware of if the warm air being lifted by a warm front is unstable?

EMBEDDED THUNDERSTORMS AND/OR CB CLOUDS

Stationary fronts may develop into _____ ______ (type of front)

FRONTAL WAVES

What is the flight procedure in the vicinity of a cold front?

LAND AND WAIT FOR THE NARROW BAND OF WEATHER TO PASS

The primary cause of frontal weather is

LIFTING OF WARM AIR BY COLDER AIR

Warm fronts normally move TO the ______ (what direction)

NE

The surface wind behind the cold front is generally _____ (from which direction) and the surface wind ahead of the cold front is typically ______ (direction).

NW SW

Frontal waves (or open waves) may develop into (cold/warm/ occluded) fronts

OCCLUDED

What type of front develops when the faster moving cold front of a frontal wave catches up with the slower moving warm front of the wave?

OCCLUDED

Which front is considered to have the most violent weather? WHY?

OCCLUDED (COLD OR WARM) HAS BOTH COLD AND WARM FROM WEATHER OCCURRING AT SAME LOCATION

The type of air masses most often associated with fronts in the USA are

P AND T

Winds associated with a stationary front usually flow (parallel/perpendicular) to the frontal symbol

PARALLEL

The general direction of movement of a cold front is TO the

SE

A severe line of thunderstorms, called ________ _________, may form ahead of (slow/fast) moving cold fronts.

SQUALL LINES FAST

The surface wind behind a warm front generally blows FROM the _____ (direction) and the surface wind ahead of the warm front is usually FROM the _____ (direction).

SW SE

Define a cold front

THE LEADING EDGE OF AN ADVANCING MASS OF COLD AIR

Define a warm front

TRAILING EDGE OF A RETREATING MASS OF COLD AIR, WITH WARM AIR MOVING IN BEHIND THE FRONTAL SYMBOL

True or False: All fronts have temperature inversions

TRUE

The weather associated with a stationary front will normally be similar to that of a (cold/warm) front, but usually less intense.

WARM