Training Guide in Surface Weather Observations - Multiple Choices

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11. 12. At the time of observation, the visibility is observed to be varying rapidly between 1 5/8 and 2 1/4 miles with an average of 1 15/16 miles. What would the entries be in columns 7a and 14? SUR- FACE (7a) REMARKS AND SUPPLEMENTAL CODED DATA 13. Visibility is a term that denotes the greatest distance at which: a. All objects can be seen and identified. b. Selected objects can be seen and identified. c. Objects can be detected but not identified. d. All objects can be detected but not identified. 14. Prevailing visibility is defined as: a. The minimum visibility that is equaled or exceeded over one-half or more of the horizon circle. b. The average visibility of all sectors. c. The lowest average visibility of all sectors. d. The maximum visibility that is equaled or exceeded in 180 degrees or more of the horizon circle. 15. When observed visibility is between two reportable values, visibility reported is the: a. Closest of the two values. b. Average of the two values. c. Lower of the two values. d. Higher of the two values. 3-13 (14)
16. Prevailing visibility is reported in: a. Nautical miles and fractions. b. Kilometers and fractions. c. Statute miles and fractions. d. Hundreds of feet. 17. Of the following, the most suitable objects for determining nighttime visibility are: a. Unfocused lights of moderate intensity at known distances. b. Searchlights. c. High intensity runway lights. d. Focused lights of moderate intensity at known distances. 18. Report sector visibility in the remarks whenever it: a. Is nonuniform b. Differs from prevailing visibility by one or more reportable values and is less than 3 miles. c. Is less than 7 miles. d. Is nonuniform and differs from prevailing visibility. 19. Prevailing visibility is reported as variable when it rapidly increases and decreases by 1/2 or more miles and is less than: a. 7 miles b. 3 miles c. 4 miles d. 6 miles 20. The following are reported changes in prevailing visibility. Put a check mark in front of those that require a SPECI to be taken. a. 5 miles to 3 miles b. 3 miles to 2 1/2 miles c. 2 1/2 miles to 2 miles d. 2 miles to 1 mile e. 1 mile to 2 miles f. 2 miles to 2 1/2 miles g. 2 1/2 miles to 3 miles h. 3 miles to 5 miles 21. What objects can be used for determining visibility? 22. For variable visibility to be reported, which of the following criteria need to be satisfied? (more than one answer): visibility is less than 3 miles visibility is between 2 and 4 miles visibility is rapidly increasing and decreasing by 1/2 mile or more visibility changes by 1 mile or more 3-14
Page 1 and 2: Training Guide in Surface Weather O
Page 3: PREFACE METAR/SPECI is the internat
Page 6 and 7: CHAPTER 7 - PRESSURE ..............
Page 8 and 9: 1.2 Content and Format of the Manua
Page 10 and 11: 1.6 Report Modifier - COR An observ
Page 12 and 13: 1-6
Page 14 and 15: 12. A METAR observation contains se
Page 16 and 17: 25. At no time shall an observation
Page 18 and 19: 2.1.4 Estimated Winds Though winds
Page 20 and 21: 2-4
Page 22 and 23: Code the following wind situations
Page 24 and 25: 19. Which of the following wind par
Page 26 and 27: 3.1 Visibility 1 CHAPTER 3 VISIBILI
Page 28 and 29: 3.2.3 Surface and Tower Visibility
Page 30 and 31: SUR- FACE VISIBILITY PRESENT WEATHE
Page 32 and 33: 3.3 Visibility Chart As an aid for
Page 34 and 35: OUTLINE DETERMINING VISIBILITY From
Page 36 and 37: REVIEW QUESTIONS Select the best an
Page 40 and 41: 23. Weather conditions being equal,
Page 42 and 43: 38. Visibility of 2 3/8 miles is re
Page 44 and 45: When more than one type of present
Page 46 and 47: 4.1.2 Descriptors Descriptors are q
Page 48 and 49: Obscurations that stand alone, i.e.
Page 50 and 51: Question: What does an observer do
Page 52 and 53: Footnotes for Weather Phenomena Mat
Page 54 and 55: 9. +FZRA a. Severe freezing rain b.
Page 56 and 57: 23. Volcanic ash is reported: a. wh
Page 58 and 59: 37. Match the following present wea
Page 60 and 61: 46. Which of the following precipit
Page 62 and 63: 59. Steady rain is observed 4 miles
Page 64 and 65: 72. Rain showers of an unknown inte
Page 66 and 67: 5.2 Sky Cover Figure 5-2. Weather O
Page 68 and 69: Example 5-2. One Layer with Single
Page 70 and 71: Figure 5-4. Advancing Layer (sky co
Page 72 and 73: 5-8
Page 74 and 75: Figure 5-10. Surface-base Layer Sur
Page 76 and 77: Example 5-5. Four Layers. The follo
Page 78 and 79: Example 5-8. One Layer. Example 5-9
Page 80 and 81: 1 CU - Cumulus 1 Example 5-12. Mult
Page 82 and 83: layer aloft will be considered as m
Page 84 and 85: 5. When a balloon is used for deter
Page 86 and 87: OUTLINE DETERMINING SKY COVER AMOUN
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Select the correct answer. REVIEW Q
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20. If a layer aloft has less than
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40. Match the following reportable
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6.1 Temperature and Dew Point - T
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6. Obtain the difference between th
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Other examples of determining wet-b
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The conversion from ice to water ca
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a. Read right end of index in minim
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Figure 6-8. Reading a Thermometer t
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TIME G LST G UTC (2) TEMP. (°C) DE
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Method II: Centrifugal Force A shor
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INSTRUCTIONS: Select the best answe
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16. Under what conditions is the de
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6-21 +130 129 128 127 126 +125 124
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6-23
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The altimeter setting shall be repo
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7-4
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7. Sea-level pressure is an adjustm
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2. Additive Data [NA SAWRS] 3- and
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8.2.2.2 24-Hour Precipitation Amoun
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When finished, put the emptied meas
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8.3.3.1 Depth of New Snow (Snowfall
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8-10
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10. A thunderstorm is overhead, mov
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26. A 6-hourly maximum temperature
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CHAPTER 9 REVIEW EXERCISES OBSERVIN
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Exercise #3 Lower layer has ____/8t
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Exercise #5 Surface based layer has
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Exercise #7 Total sky coverage is _
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Exercise #9 Lower layer has ____/8t
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Exercise #11 Total sky coverage is
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QUALITY CONTROL EXERCISE Each of th
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21. METAR KKKK 282045Z E29006KT 7SM
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42. METAR KFFF 302250Z 03008KT 40SM
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16. a. METAR 17. b. second 18. d. f
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11. - a change in wind direction of
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...unfocused lights of moderate int
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22. b precipitation occurring not a
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52. b. decreasing dominance. 53. b.
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24. 8 VV 25. 8 OVC 26. 7 BKN 27. as
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A-14
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A-16
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A-18
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18. 1200 UTC or other time modified
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9. Lower layer has 1 /8ths coverage
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16. METAR KFFF 312148Z 36005KT 1 1/
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43. METAR KGGG 052145Z 05009KT 4SM
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WET BULB TEMPERATURES 31 32 33 34 3
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WS Form B-11 (12-96) Pres. by WSOH
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C-3
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. If an altimeter setting indicator
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Training Guide in Surface Weather Observations - Multiple Choices

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