Training Guide in Surface Weather Observations - Multiple Choices

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The altimeter setting shall be reported in inches of mercury using four digits , e.g., A2992. The decimal is dropped. The altimeter setting is included in all METAR and SPECI reports. THE ALTIMETER SETTING IS NEVER ESTIMATED. It shall be missing (not reported) if the reading is questionable or the altimeters are out of service. Because of the large variety of instruments used in determining pressure data, their use will not be discussed here. You should study the applicable chapter in WSOH, and practice using the instruments at your station until you are thoroughly familiar with them. 7.2 Station Elevation - HP The officially designated height above sea level to which station pressure pertains. It is generally, but not always, the same as field elevation (H ) at an airport station. 7.2.1 Station Pressure The atmospheric pressure at the designated station elevation. 7.3 Sea-Level Pressure a The pressure value obtained by the theoretical reduction or increase of barometric pressure to sea-level. Reported in hectopascals in the remarks section of a METAR report. Figure 7-2. Station Pressure Reduced to Sea Level. 7-2
7.4 Difference Between Coded Report and MF1M-10C Entries. The altimeter group for the transmitted report starts with an A (the international indicator for altimeter in inches of mercury). When the altimeter setting is entered in column 13 of MF1M-10, it does not contain this designator, only the four-digit group. Example: Transmitted: A3005 Column 13: 7.5 Altimeter Setting Accuracy. Because of accuracy requirements for the altimeter setting, it is important that comparison procedures described in the WSOH be followed. If, for any reason, you don’t make the required comparisons or the tolerance limits are exceeded, omit the altimeter setting. 7-3 3005
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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,
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23. Weather conditions being equal,
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38. Visibility of 2 3/8 miles is re
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When more than one type of present
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4.1.2 Descriptors Descriptors are q
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Obscurations that stand alone, i.e.
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Question: What does an observer do
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Footnotes for Weather Phenomena Mat
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9. +FZRA a. Severe freezing rain b.
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23. Volcanic ash is reported: a. wh
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37. Match the following present wea
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46. Which of the following precipit
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59. Steady rain is observed 4 miles
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72. Rain showers of an unknown inte
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5.2 Sky Cover Figure 5-2. Weather O
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Page 70 and 71: Figure 5-4. Advancing Layer (sky co
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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
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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
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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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Page 142 and 143: Exercise #5 Surface based layer has
Page 144 and 145: Exercise #7 Total sky coverage is _
Page 146 and 147: Exercise #9 Lower layer has ____/8t
Page 148 and 149: Exercise #11 Total sky coverage is
Page 150 and 151: QUALITY CONTROL EXERCISE Each of th
Page 152 and 153: 21. METAR KKKK 282045Z E29006KT 7SM
Page 154 and 155: 42. METAR KFFF 302250Z 03008KT 40SM
Page 156 and 157: 16. a. METAR 17. b. second 18. d. f
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Page 164 and 165: 52. b. decreasing dominance. 53. b.
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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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