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Training Guide in Surface Weather Observations - Multiple Choices

Training Guide in Surface Weather Observations - Multiple Choices

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Exercise #9<br />

Lower layer has ____/8ths coverage. Prevail<strong>in</strong>g visibility is statute miles.<br />

Middle layer has ____/8ths coverage. Sector visibility and direction is (if any).<br />

Upper layer has ____/8ths coverage.<br />

Total sky coverage is ____/8ths.<br />

Given:<br />

Altimeter: 29.782 <strong>in</strong>ches<br />

W<strong>in</strong>d <strong>in</strong>dicator has direction of 190°, vary<strong>in</strong>g from 160° to 220°, speed has suddenly <strong>in</strong>creased from<br />

10 to 28 knots gust<strong>in</strong>g to 40 knots.<br />

Dry bulb temperature is 88.5°F; wet bulb temperature is 83.1°F<br />

Computed dew po<strong>in</strong>t is °F.<br />

Ra<strong>in</strong> is moderate and thunder was first heard at 1835 UTC.<br />

Cumulonimbus clouds are observed <strong>in</strong> the vic<strong>in</strong>ity to the southwest at 5,000 feet and tower<strong>in</strong>g cumulus<br />

are overhead <strong>in</strong> the layer at 1,800 feet. All clouds are mov<strong>in</strong>g northeast.<br />

The time of the observation is 1835 UTC.<br />

9-9

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