Training Guide in Surface Weather Observations - Multiple Choices

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20. If a layer aloft has less than 1/8 of sky cover, the reportable contraction is: a. SKC b. FEW c. SCT d. VV 21. An obscuration is the portion of sky that is by weather phenomena either surface-based or aloft. 22. If all the sky is visible through a surfaced-based phenomenon covering 8/8 of the sky, the sky cover contraction used if no other layers are present is . 23. If the sky is visible everywhere through a layer of smoke aloft that covers 8/8 of the sky, the sky cover of the layer is eighths and the sky cover contraction is . 24. If the sky cannot be seen because of a layer of smoke at the surface that hides 8/8 of the sky, the sky cover of the layer is eighths and the sky cover contraction used is . 25. If 8/8 of the sky is covered by a layer aloft that hides 6/8 of the sky, the sky cover layer is and the sky contraction used is . 26. If 7/8 of the sky is covered by a layer aloft that hides 2/8 of the sky, the sky cover of the layer is and the sky cover contraction used is . 27. Sky cover contractions are entered in column 10 of MF1M-10C in (ascending, descending) order of the height of the layers. (Circle one) 28. A ceiling is defined as 29. How should each of the following observed heights be recorded in column 10 of MF1M-10C? a. 175 feet b. 11,250 feet c. 7,750 feet d. 50 feet e. 725 feet f. 2,650 feet 30. The height of all layers, including the ceiling layer, will be recorded in column 10 of MF1M-10C in terms of feet above . 31. An overcast layer of clouds is present over the field. A balloon is released and the observer notes that the balloon begins to fade at 1,800 feet and completely fades from view at 2,000 feet. This sky condition would be entered in column 10 of MF1M-10C as: . 5-26
32. The sky is completely obscured (hidden) by a layer of fog at the surface. The observer releases a balloon to determine the ceiling height and notes that the balloon starts to fade almost immediately and completely fades from view at 650 feet. This sky condition would be entered in column 10 of MF1M-10C as: . 33. When several layers are reported as broken, the ceiling is the layer in the report. 34. The sky cover summation amount for any given layer is the sum of the sky cover for the layer being evaluated plus the sky cover of: a. all upper layers b. all lower layers excluding obscurations c. all lower layers including obscurations d. obscurations only 35. The sky cover shall be considered variable if it: a. varies one or more reportable values b. varies one reportable value only c. contains more than one layer d. is fragmented by strong gusty winds 36. The portion of the sky cover hidden by weather phenomena either surface-based or aloft describes: a. vertical visibility b. obscuration c. layer summation d. ceiling 37. Which of the following may be used to determine the height of the sky cover? (more than one answer) a ceilometer a ceiling balloon pilot reports observer experience a ceiling light 38. A 1500-foot ceiling varies in height by 300 feet during the period of evaluation. Would this be considered a variable ceiling? 39. At mountain stations, a cloud layer located 200 feet below the station elevation would be reported with a height of: a. -200 b. M200 c. /// d. it is not reported 5-27
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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
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1.6 Report Modifier - COR An observ
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1-6
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12. A METAR observation contains se
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25. At no time shall an observation
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2.1.4 Estimated Winds Though winds
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2-4
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Code the following wind situations
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19. Which of the following wind par
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3.1 Visibility 1 CHAPTER 3 VISIBILI
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3.2.3 Surface and Tower Visibility
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SUR- FACE VISIBILITY PRESENT WEATHE
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3.3 Visibility Chart As an aid for
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OUTLINE DETERMINING VISIBILITY From
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REVIEW QUESTIONS Select the best an
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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 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
Page 88 and 89: Select the correct answer. REVIEW Q
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
Page 110 and 111: INSTRUCTIONS: Select the best answe
Page 112 and 113: 16. Under what conditions is the de
Page 114 and 115: 6-21 +130 129 128 127 126 +125 124
Page 116 and 117: 6-23
Page 118 and 119: The altimeter setting shall be repo
Page 120 and 121: 7-4
Page 122 and 123: 7. Sea-level pressure is an adjustm
Page 124 and 125: 2. Additive Data [NA SAWRS] 3- and
Page 126 and 127: 8.2.2.2 24-Hour Precipitation Amoun
Page 128 and 129: When finished, put the emptied meas
Page 130 and 131: 8.3.3.1 Depth of New Snow (Snowfall
Page 132 and 133: 8-10
Page 134 and 135: 10. A thunderstorm is overhead, mov
Page 136 and 137: 26. A 6-hourly maximum temperature
Page 138 and 139: 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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