Training Guide in Surface Weather Observations - Multiple Choices

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46. Which of the following precipitation events does not require a SPECI report? a. Ice pellets begin. b. Hail begins. c. FZRA changes to FZRA. d. SN changes to +SN. 47. Ice formed on exposed surfaces by freezing rain or freezing drizzle is known as: a. glaze. b. frost. c. rime. d. ice pellets. 48. Report thunderstorms occurring at your station when is/are observed within the past 15 minutes. a. very dark CB overhead and lightning in all quadrants b. heavy rain showers and 55 knot winds c. heavy rain showers and 1/2 inch hail d. 3/4 inch hail 20 minutes earlier, but not at the time of the observation 49. Moderate snow (SN) is reported when snow is occurring alone and the visibility is less than: a. 5/8 of a mile, but not less than 5/16 of a mile. b. 3/4 of a mile, but not less than 5/16 of a mile. c. 5/8 of a mile, but not less than 1/8 of a mile. d. 1 mile, but not less than 1/2 mile. 50. A light intensity symbol () is never used to report: a. ice crystals. b. ice pellets. c. snow showers. d. freezing drizzle. 51. Which of the following phenomena may be classified as having heavy intensity? a. Hail b. Thunderstorm c. Funnel cloud d. Sandstorm 52. If more than one obscuration is occurring at the same time, the obscurations are entered in column 9 (Present Weather) in the order of: a. their beginning. b. decreasing dominance. c. increasing dominance. d. intensity. 4-18
53. A complex weather situation, represented by light rain showers, light snow showers (dominant), and a thunderstorm, is present. Entries are made in the following order: a. TS RASN b. TSSNRA c. TS SNRA d. TSSHSNRA 54. The weather phenomena FZRASN indicates which type of weather is occurring at the station? a. Light freezing rain and snow. b. Light freezing rain and moderate snow. c. Freezing rain and light snow showers. d. Light rain showers and snow. 55. The visibility at your station was reduced from 12 miles to 7 miles by mist, light snow, and smoke. What is the minimum entry that should be made in column 9 (Present Weather)? a. SN b. SN BR FU c. BR d. BR SN FU 56. Blowing dust is reducing the prevailing visibility to 5/8 statute mile. What would be recorded in column 9 (Present Weather)? a. BLDU b. DU c. DS d. +DS 57. The visibility decreased from 1 mile to 1/2 mile in fog. At the same time, the temperature decreased from 1.5°C to 0.0°C. What should be recorded in column 9 (Present Weather)? a. FZFG b. BR c. FG d. FZBR 58. If light snow and blowing snow are occurring at the same time and the observer can no longer determine if light snow is falling, what should be reported in column 9 (Present Weather)? a. BLSN b. SN BLSN c. SN BLSN d. BLSN 4-19
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Training Guide in Surface Weather O
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PREFACE METAR/SPECI is the internat
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CHAPTER 7 - PRESSURE ..............
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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 38 and 39: 11. 12. At the time of observation,
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 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
Page 88 and 89: Select the correct answer. REVIEW Q
Page 90 and 91: 20. If a layer aloft has less than
Page 92 and 93: 40. Match the following reportable
Page 94 and 95: 6.1 Temperature and Dew Point - T
Page 96 and 97: 6. Obtain the difference between th
Page 98 and 99: Other examples of determining wet-b
Page 100 and 101: The conversion from ice to water ca
Page 102 and 103: a. Read right end of index in minim
Page 104 and 105: Figure 6-8. Reading a Thermometer t
Page 106 and 107: TIME G LST G UTC (2) TEMP. (°C) DE
Page 108 and 109: 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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