Training Guide in Surface Weather Observations - Multiple Choices

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37. Match the following present weather phenomena with their definition: well-developed dust/sand whirl sandstorm funnel cloud duststorm squalls a. a violent, rotating column of air that does not touch the earth’s surface b. particles of sand carried aloft by a strong wind, mostly confined to the lowest ten feet c. a whirling column of dust or sand with a small diameter and an approximately vertical axis d. a severe weather condition characterized by strong winds and dust-filled air over an extensive area e. sudden onset of strong winds in which the wind speed increases by at least 16 knots and is sustained at 22 knots or more for at least one minute 38. For each of the following descriptions, indicate the appropriate precipitation intensity (LGT, MOD, HVY) a rain accumulation of 0.25 inch/hour rain seemingly falls in sheets visibility is not affected by falling ice pellets scattered rain drops do not completely wet an exposed surface 0.05 inch of rain in 6 minutes slow accumulation of ice pellets on the ground snow is observed and visibility is 3/4 mile drizzle reduces visibility to 1/8 mile 39. Match the following “descriptors” with the phenomenon they may be used to describe: shallow, partial a. snow raised by the wind to a height of 6 feet or more low drifting b. fog with little vertical extent blowing c. drizzle that forms a glaze on the ground showers d. precipitation characterized by rapid changes in intensity thunderstorm e. sand raised by the wind to less than 6 feet freezing f. local storm produced by a cumulonimbus cloud 4-16
40. For each of the following, indicate the proper order for reporting: a. squalls rain fog b. thunderstorm tornado rain c. thunderstorm snow fog 41. The beginning of a thunderstorm is reported when: a. thunder is heard b. lightning is observed but local noise prevents hearing thunder c. lightning is observed at a distance but no thunder is heard d. both a and b 42. The ending of a thunderstorm is reported minutes after the last occurrence of the event. a. 5 minutes b. 10 minutes c. 15 minutes d. 30 minutes 43. The visibility at your station was reduced from 12 miles to 7 miles by mist, light snow, and haze. Wtah minimum entry should you make in column 9 (Present Weather)? a. BR SN HZ b. SN BR HZ c. SN BRHZ d. SN 44. Occassional lightning is observed 8 miles north of the station, but thunder is not heard. What is reported in column 9 (Present Weather) and column 14 (Remarks)? a. col. 9: nothing; col. 14: OCNL LTG VC N b. col. 9: TS; col. 14: OCNL LTG N c. col. 9: VCTS; col. 14: OCNL LTG N d. col. 9: VCTS; col. 14 OCNL LTG 8 N 45. Light drizzle (DZ) is reported when drizzle is occurring with fog and the visibility is: a. 1/4 to 1/2 mile. b. less than 1/4 mile. c. less than 1/2 mile. d. any of the above. 4-17
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Training Guide in Surface Weather O
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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 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 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 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
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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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