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AIRMETs are issued on a scheduled basis every

six hours

What is the maximum forecast period for AIRMET's?

Six hours

SIGMETs are issued as a warning of weather conditions potentially hazardous

to all aircraft

Which meteorological condition is issued in the form of a SIGMET (WS)?

Widespread sand or dust storms lowering visibility to less than 3 miles

Pilots of IFR flights seeking ATC in-flight weather avoidance assistance should keep in mind that

ATC radar limitations and, frequency congestion may limit the controllers capability to provide this service

The Hazardous Inflight Weather Advisory Service (HIWAS) is a continuous broadcast over selected VORs of

SIGMETs, CONVECTIVE SIGMETs, AIRMETs, Severe Weather Forecast Alerts (AWW), and Center Weather Advisories

What is meant by the entry in the remarks section of METAR surface report for KBNA? METAR KBNA 211250Z 33018KT 290V260 1/2SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RAE42SNB42

Rain ended 42 past the hour, snow began 42 past the hour

A ceiling is defined as the height of the

lowest layer of clouds or obscuring phenomena aloft that is reported as broken or overcast

The reporting station originating this Aviation Routine Weather Report has a field elevation of 620 feet. If the reported sky cover is one continuous layer, what is its thickness (tops of OVC are reported at 6,500 feet)? METAR KMDW 121856Z AUTO 32005KT 1 1/2SM +RA BR OVC007 17/16 A2980

5,180 feet

The station originating the following weather report has a field elevation of 1,300 feet MSL. From the bottom of the overcast cloud layer, what is its thickness (tops of OVC are reported at 3,800 feet)? SPECI KOKC 2228Z 28024G36KT 3/4SM BKN008 OVC020 28/23 A3000

500 feet

What significant sky condition is reported in this METAR observation? METAR KBNA 1250Z 33018KT 290V360 1/2SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RERAE42SNB42

Sky is obscured with vertical visibility of 800 feet

Interpret this PIREP. MRB UA/OV MRB/TM 1430/FL 060/TP C182/SK BKN BL /WX RA/TB MDT

At 6,000 feet; between layers; moderate turbulence; moderate rain

Which response most closely interprets the following PIREP? UA/OV OKC 063064/TM 1522/FL080/TP C172/TA - 04 /WV245040/TB LGT/RM IN CLR

64 nautical miles on the 63 degree radial from Oklahoma City VOR at 1522 UTC, flight level 8,000 ft. Type of aircraft is a Cessna 172

What important information is provided by the Radar Summary Chart that is not shown on other weather charts?

Lines and cells of hazardous thunderstorms

For the most effective use of the Radar Summary Chart during preflight planning, a pilot should

compare it with the charts, reports, and forecasts of a three-dimensional picture of clouds and precipitation

From which primary source should you obtain information regarding the weather expected to exist at your destination at your estimated time of arrival?

Terminal Aerodrome Forecast

What is the wind shear forecast in the following TAF? TAF KCVG 231051Z 231212 12012KT 4SM -RA BR OVC008 WS005/27050KT TEMPO 1719 1/2SM -RA FG FM1930 09012KT 1SM -DZ BR VV003 BECMG 2021 5SM HZ=

500 feet AGL from 270° at 50 KT

What is the forecast wind at 1800Z in the following TAF? KMEM 091740Z 1818 00000KT 1/2SM RAFG OVC005=

Calm

When the visibility is greater than 6 SM on a TAF it is expressed as

P6SM

A "VRB" wind entry in a Terminal Aerodrome Forecast (TAF) will be indicated when the wind is

3 knots or less

Which primary source should be used to obtain forecast weather information at your destination for the planned ETA?

Terminal Aerodrome Forecast (TAF)

The body of a Terminal Aerodrome Forecast (TAF) covers a geographical proximity within a

5 statute mile radius from the center of an airport runway complex

Area forecasts generally include a forecast period of 18 hours and cover a

area the size of several states

"WND" in the categorical outlook in the Aviation Area Forecast means that the wind during that period is forecast to be

At least 20 knots or stronger

A station is forecasting wind and temperature aloft at FL 390 to be 300° at 200 knots; temperature -54°C. How would this data be encoded in the FD?

809954

What wind direction and speed is represented by the entry 9900+00 for 9,000 feet, on a Winds and Temperatures Aloft Forecast (FD)?

Light and variable; less than 5 knots

When is the wind-group at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FD)? When the wind

at the altitude is within 1,500 feet of the station elevation

When is the temperature at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FD)?

For the 3,000-foot altitude (level) or when the level is within 2,500 feet of station elevation

Which values are used for winds aloft forecasts?

True direction and knots

A prognostic chart depicts the conditions

forecast to exist at a specific time in the future

Which meteorological conditions are depicted by a prognostic chart?

Conditions forecast to exist at a specific time shown on the chart

The Low-Level Significant Weather Prognostic Chart depicts weather conditions

that are forecast to exist at a valid time shown on the chart

A pilot planning to depart at 1100Z on an IFR flight is particularly concerned about the hazard of icing. What sources reflect the most accurate information on icing conditions (current and forecast) at the time of departure?

Pilot weather reports (PIREPs), AIRMETs, and SIGMETs

What flight planning information can a pilot derive from constant pressure charts?

Winds and temperatures aloft

What conclusion(s) can be drawn from a 500-milli-bar Constant Pressure Chart for a planned flight at FL 180?

Observed temperature, wind, and temperature/dew point spread along the proposed route can be approximated

Which weather forecast describes prospects for an area coverage of both severe and general thunderstorms during the following 24 hours?

Convective outlook

The Surface Analysis Chart depicts

actual frontal positions, pressure patterns, temperature, dew point, wind, weather, and obstructions to vision at the valid time of the chart

What information is provided by a Convective Outlook (AC)?

It provides prospects of both general and severe thunderstorm activity during the following 24 hours

What does a Convective Outlook (AC) describe for a following 24-hr. period?

General thunderstorm activity

When are severe weather watch bulletins (WW) issued?

Unscheduled and issued as required

Which forecast provides specific information concerning expected sky cover, cloud tops, visibility, weather, and obstructions to vision in a route format?

249 TWEB 252317

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