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SMA > Weather Reports > Flashcards

Weather Reports Flashcards

1
Q

Aviation Routine Weather Reports is also know as?

A

METAR

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2
Q

What is the definition of Aviation Routine Weather Reports (METAR)?

A

Observation code used to report metrological data. A schedules observation taken between 55 -59 past the hour (Hourly Observation)

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3
Q

What are the elements of METAR Report?

A
  1. Wind
  2. Visibility
  3. Runway visual range Present weather
  4. Sky Condition
  5. Temperature
  6. Dew point
  7. Altimeter setting
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4
Q

What are the two types of aviation weather reports?

A

METAR & SPECI

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5
Q

An unscheduled observation taken when a predefined condition criteria change occurs.

A

SEPCI (Special Report)

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6
Q

A location character identifier KBLV is defined as what?

A

Is the location/Station

  1. First letter identifies the area/country
  2. last three letters identify the station
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7
Q

What location identifier is K?

A

CONUS (Continental United States)

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8
Q

Aviation Weather Report Sections - Location -

A

4 letter code. Location/Station

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9
Q

Second part of the the METAR/SPECI Report -

A

Date/Time

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10
Q

The Date/Time is a _____ digit code.

A

7

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11
Q

In the Date/Time the first two digits are ______ the last four are _______ and the last digit is Z.

A

Two digit date 01
Four digit time 1730
Example 011730Z

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12
Q

The third section of the METAR/SPECI is the what?

A

ASOS Designators and Correction Modifiers

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13
Q

ASOS Designators and Correction Modifiers AUTO refers to what?

A

A reading from an unattended Automated Surface Observation System

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14
Q

What does ASOS stand for?

A

Automated Surface Observation System

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15
Q

What is an AO1 ASOS?

A

It is an ASOS without a rain and snow discriminator

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16
Q

What is an COR ASOS?

A

It is an ASOS observation corrected for an error. (Disregard the previous transmission)

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17
Q

What is the METAR/SPECI Section that comes after the ASOS?

A

Wind Speed and Direction

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18
Q

How is Wind Direction reported in the METAR/SPECI?

A

Reported wind direction in magnetic north because runways and aircraft instruments are oriented towards magnetic north.

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19
Q

Wind speed is reported as three types. what are these types?

A
  1. Prevailing
  2. Gust
  3. Squall
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20
Q

What is prevailing wind?

A

Sustained winds. Average direction/speed over 2 minutes

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21
Q

What is the definition of a gust?

A

A sudden, brief increase in wind speed. (variation of 10 knots or more between peaks and lulls during the ten minutes immediately proceeding the observation

22
Q

What is a squall?

A

A large variation in wind speed (often accompanied by a shower or thunderstorm)

23
Q

What is a term used when the speed increases by at least 16 knots and is sustained at 22 knots or more for at least one minute?

A

Squall

24
Q

Break down the following Wind Direction report in the METAR/SPECI? 25015G30KT

A

Direction 250

Speed 15 Gust to 30 knots

25
Q

How is Wind Direction Variability reported in the METAR/SPECI? 210V290

A

Wind Variability is reported if the direction varies by 60 degrees and speeds greater that 6 knots. Separated by V (Variable)

26
Q

How is Visibility reported in the METAR/SPECI?

A

Sector visibility is reported in the remarks section if it differs from the prevailing and is less than 3sm.

27
Q

Define METAR/SPECI Visibility -

A

Prevailing is the greatest horizontal visibility observed throughout at least half the horizon circle and is not necessarily continuous.

28
Q

What is reported when the prevailing visibility is one statute mile or less and the runway is 6000 ft / 1830 or less.

A

Runway Visual Range (RVR)

29
Q

How is Runway Visual Range (RVR) is reported the METAR/SPECI?

A

R

30
Q

What follows the R in the METAR/SPECI?

A

Runway Heading

31
Q

In a METAR/SPECI report RVR is what is reported digits following the runway?

A

Visibility in feet. (Meters used overseas.)

32
Q

Explain the following RVR report. R32L/1000ft

A

Runway visual range for 32 Left is 1000 ft

33
Q

Explain the following RVR report. R18R/M0600ft

A

Runway visual range for 18 right is less that 600 ft

34
Q

Explain the following RVR report. R32L/P6000ft

A

Runway visual range for 32 Left is greater than 6000 ft

35
Q

Explain the following RVR report. R35R/0700V1000ft

A

Runway visual range for 35 Right runway is varying between 700 feet and 1000 feet.

36
Q

What are Weather Obstruction Codes for the METAR/SPECI?

A

Any precipitation or obstruction to visibility, reported in the a group of data following the visibility report.

37
Q

The absence of of weather or an obstruction group indicates what?

A

No weather phenomenon has occurred at the time of the observation

38
Q

The METAR/SPECI example of Weather Obstructions: R2R/1000Ft FG?

A

FG = Fog Visibility < 5/8 mile.

39
Q

Clouds are reported in the METAR/SPECI in _____ for coverage an ______ in AGL (Above Ground Level)

A
  1. Eighths

2. Hundreds

40
Q

In a METAR/SPECI Cloud report automated systems do not report cloud bases above ______?

A

12000 FT

41
Q

The following example BKN005 reads?

A

Cloud base Broken at 500ft

42
Q

What follows the METAR/SPECI Cloud report?

A

Temperature and Dew point

43
Q

Why is temperature and dew point important important?

A

These affect runway length and helicopter power settings

44
Q

What follows the Temperature and Dew Point as a five character group starting with A in the METAR/SPECI Report?

A

Altimeter Setting

45
Q

Altimeter setting is reported as A and in _________.

A

Hundredths of inches of mercury.

46
Q

Define A2984 in the altimeter setting?

A

A = Altitude, 29.84 inches of Mercury

47
Q

The last part of the METAR/SPECI is the ______ section?

A

Remarks (RMK)

48
Q

What is encoded in plain language and will contain supplementary data

A

Remarks (RMK) Section

49
Q

Weather briefings include the ________ and _______ briefings.

A
  1. Planning

2. Preflight

50
Q

Who is the primary point of contact for weather briefings and all operational weather support?

A

Weather Team

51
Q

When requesting a weather briefing be prepared to provide as much information as possible. At a minimum include the following….

A
  1. Your name (always identify yourself as a crewmember)
  2. Aircraft identification/type
  3. En route plan (stops, low levels, landing zones, targets, ranges, etc.)
  4. Proposed Altitude
  5. Estimated time of departure/return
  6. Time en route to destination
  7. Alternates required

SMA (30 decks)

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