Weather Services

(Refer to Figure 20.) What is the maximum wind velocity forecast in the jet stream shown on the High-Level Significant Weather Prognostic Chart over the southern United States?. 90 knots. N/A.

SIGMETs are issued as a warning of weather conditions potentially hazardous. to all aircraft. N/A. N/A.

What information is provided by a Convective Outlook (AC)?. It provides prospects of both general and severe thunderstorms activity during the following 24 hours. N/A. N/A.

Which meteorological condition is issued in the form of a SIGMET (WS)?. Windspread sand or dust storms affecting at least 3,000 square miles or an area deemed to have a significant effect on the safety of aircraft operations. N/A. N/A.

(Refer to Figure 7.) What weather conditions are depicted within area 1?. Moderate turbulence from below FL250 up to FL360. N/A. N/A.

(Refer to Figure 20.) What is the height of the tropopause over the northwest United States?. 45,000 feet MSL. N/A. N/A.

(Refer to Figure 19.) The next issuance of the 12-hour Significant Weather Prognostic Chart will become valid. 0000Z. N/A. N/A.

(Refer to Figure 7.) What information is indicated right of number 8?. The height of the tropopause in hundreds of feet above MSL. N/A. N/A.

(Refer ti Figure 7.) What weather conditions are depicted within the area indicated by number 6?. Occasional embedded cumulonimbus clouds, bases below 25,000 feet MSL, top 45,000 feet MSL. N/A. N/A.

To best determine general froecast weather conditions covering a flight information region, the pilot should refer to. Graphical Forecasts for Aviation (GFA). N/A. N/A.

Which response most closely interprets the following PIREP? UA/OV OKC 063064/TM 1522/FL080/TP C172/TA M04/WV 245040/TB LGT/RM IN CLR. 64 nautical miles on the 063° radial from Oklahoma City VOR at 1522 UTC, flight level 8,000 ft. Type of aircraft is a Cessna 172. N/A. N/A.

Which weather product is a concise statement of the expected weather for an airport´s runway complex?. Terminal aerodrome forecast. N/A. N/A.

What does a Convective Outlook (AC) describe for a following 24 hour period?. Areas of slight, moderate, or high risk of severe thundestorms. N/A. N/A.

(Refer to Figure 2.) What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over ALB at FL270?. 275° true at 97 knots; ISA +4°C. N/A. N/A.

What is the maximum forecast period for AIRMETs?. Six hours. N/A. N/A.

Which weather forecast describes prospects for an area coverage of both severe and general thundestorms during the following 24 hours?. Convective Outlook. N/A. N/A.

The use of airborne weather avoidance radar. provides no assurance of avoiding instrument weather conditions. N/A. N/A.

What significant sky condition is reported in this METAR observation? METAR KBNA 1250Z 33018KT 190V360 1/2 SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RERAE42SNB42. Sky is obscured with vertical visibility of 800 feet. N/A. N/A.

What is meant by the entry in the remarks section of METAR surface report for KBNA? METAR KBNA 211250Z 33018KT 290V260 1/2 SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RAE42SNB42. Rain ended 42 past the hour, snow began 42 past the hour. N/A. N/A.

Which values are used for winds aloft forecasts?. True direction and knots. N/A. N/A.

Interpret this PIREP MRB UA/OV MRB/TM1430/FL060/TOC182/SK BKN BL/WX RA/TB MDT. At 6,000 feet; between layers; moderate turbulence; moderate rain. N/A. N/A.

(Refer to Figure 7.) The symbol on the U.S. High-Level Significant Weather Prognostic Chart indicated by number 5 represents the. height of the tropopause. N/A. N/A.

Pilots on IFR flights seeking ATC in-flight weather avoidance assistance should keep in mind that. ATC radar limitations and, freqency congestion may limit the controllers capability to provide this service. N/A. N/A.

(Refer to Figure 7.) The area indicated by arrow 3 indicates. severe turbulence at and below 37,000 feet. N/A. N/A.

(Refer to Figure 269.) The cloud coverage around area B on te Aviation Cloud Forecast is forecast to be. Bases at 6,000 feet, tops at 7,000. N/A. N/A.

(Refer to Figure 7.) What weather conditions are indicated within area 3?. Severe turbulence from FL300 up to FL370. N/A. N/A.

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. N/A. N/A.

Which meteorological conditions are depicted by a prognostic chart?. Conditions forecast to exist at a specific time shown on the chart. N/A. N/A.

What is the time frame for the validity of Low-Level Significant Weather Prognostic Charts?. 12 to 24 hours in the future. N/A. N/A.

A prognostic chart depicts the conditions. forecast to exist at a specific time in the future. N/A. N/A.

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. N/A. N/A.

(Refer to Figure 2.) What approximate wind direction, speed , and temperature (realtive to ISA) should a pilot expect when planning for flight over PSB at 270?. 255° true at 93 knots; +6°C. N/A. N/A.

AIRMETs are issued on a scheduled basis every. six hours. N/A. N/A.

(Refer to Figure 268.) What forecast weather conditions should you expect along the coast of California (area C)?. Fog and visibility 3-5 SM. N/A. N/A.

(Refer to Figure 18.) The right of the Significant Weather Prognostic Chart provides a forecast of selected aviation weather hazards up to FL240 until what time?. March 18th at 1800. N/A. N/A.

(Refer to Figure 7.) What weather conditions are depicted around area 7?. Occasional cumulonimbus, 4/8 to 6/8 sky coverage, bases below 25,000 feet MSL tops 53,000 feet MSL. N/A. N/A.

The Low-Level Significant weather Prognostic Chart depicts weather conditions. that are forecast to exist at a valid time shown on the chart. N/A. N/A.

What wind direction and speed is represented by the entry 9900+00 for 9,000 feet, on an Winds and Temperatures Aloft Forecast (FB)?. Light and variable; less than 5 knots. N/A. N/A.

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. N/A. N/A.

When does the National Weather Service release an Aviation Notification Watch Message (SAW)?. Unscheduled and issued as required. N/A. N/A.

From which primary source should you obtain information regarding the weather expected to exist at your destination at your estimated time arrival?. Terminal Aerodrome Forecast. N/A. N/A.

(Refer to Figure 262.) The weather conditions causing limted visibility along the coastal waters of Southern California (area B) are forecast to be. Fog. N/A. N/A.

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 (FB)? When the wind. at the altitude is within 1,500 feet of the station elevation. N/A. N/A.

A ceiling is defined as the height of the. lowest layer of clouds or obscuring phenomena aloft that is reported as broken or overcast. N/A. N/A.

What conclusion(s) can be drawn from a 500-millibar Constant Pressure Chart for a planned flight at FL180?. Observed temperature, wind, and temperature/dew point spread along the proposed route can be approximated. N/A. N/A.

When is the temperature at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FB)?. For the 3,000-foot altitude (level) or when the level is within 2,500 feet of station elevation. N/A. N/A.

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 FB?. 809954. N/A. N/A.

Decode the excerpt from the Winds and Temperature Aloft Foreacast (FB) for OKC at 39,000 feet FT 3000 6000 39000 OKC 830558. Wind 330° at 105 knots, temperature -58°C. N/A. N/A.

(Refer to Figure 260.) What is the valid period for the aviation surface forecast CONUS?. 1600 UTC. N/A. N/A.

(Refer to Figure 5.) On a Low-Level Significant Weather Prognostic Chart, this symbol represents. Mixed precipitation. N/A. N/A.

(Refer to Figure 260.) The surface visibility over the western part of Washington State (area A) forecast at +3 hr is predonminantly. 3-5 SM. N/A. N/A.

Which is true regarding the use of airborne weather avoidance radar for the recognition of certain weather conditions?. The radarscope provides no assurance of avoiding instrument weather conditions. N/A. N/A.

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

Consider this AIRMET that includes your route of flight: DFWS WA 211445 AIRMET IFR...OK TX FROM END TO TXK TO HOU TO LBB TO END CIG BELOW 010. CONDS ENDG 15-18Z This indictates. the area will have low ceiling before 15Z. N/A. N/A.

If you encounter in-flight icing and ATC asks you to report your conditions, what are the official reportable icing values that you are expected to use?. Trace, light, moderate, severe. N/A. N/A.

(Refer to Figure 7.) What type of weather can be expected in the red scalloped area near area 9?. Isolated embedded cumulonimbus with tops at FL330. N/A. N/A.

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. N/A. N/A.

A "VRB" wind entry in a TAF willbe indicated when the wind is. 6 knots or less. N/A. N/A.

When the visibility is greater than 6 SM on a TAF it is expressed as. P6SM. N/A. N/A.

What flight planning information can a pilot derive from constant pressure charts?. Winds and temperatures aloft. N/A. N/A.

(Refer to Figure 2.) What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over EMI at FL 270?. 265° true; 200 knots; ISA +3°C. N/A. N/A.

(Refer to Figure 266.) Precipitation throughout Washington and Oregon is predominantly. Light rain and rain showers. N/A. N/A.

(Refer to Figure 262.) The surface winds over eastern Washington State (area A) are forecast to be. 10 knots gusting to 30 knots. N/A. N/A.

(Refer to Figure 261.) The precipitation type forecast to occur over southern ND (area C) is. Freezing rain. N/A. N/A.

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. N/A. N/A.

The reporting station originating this Aviation Routine Weather Report has a filed 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 +RABR OVC007 17/16 A2980. 5,180 feet. N/A. N/A.

(Refer to Figure 263.) The ceilings over southern Texas (area C) are forecast to be. OVC. N/A. N/A.

Interpret this PIREP. MRB UA/OV MRB/TM1430/FL060/TPC182/SK BKN BL/WX RA/TB MDT. At 6,000 feet; between layers; moderate turbulence; moderate rain. N/A. N/A.