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HOW TO READ A WIND BARB |
ABOUT WEATHERZONE STORMTRACKER | ||||
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A wind barb is a compact means of
representing both wind speed and direction graphically. |
Weatherzone Stormtracker allows you to view different |
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| Each full-barb represents 10 knots
(nautical miles per hour),a half-barb 5 knots and a flag 50 knots. Calm conditions are indicated by a dot only. 1 knot is equal to around 1.9km/h. |
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Lightning strikes are
displayed as crosses and fade from white (current) to red (30 minutes ago) to blue (60 minutes ago). |
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| In the examples to the left the first
indicates a 5 knot wind from the south-west, the second a 15 knot wind from the west-north-west, the third a 45 knot easterly and the fourth a 65 knot northerly. |
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Surface
observations are displayed as a 'rose' with temperature, dew point and relative humidity down the left-hand side and rainfall since 9am, pressure and location name displayed down the right-hand side. |
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Temperatures fade in colour
from blue (cold) to red (warm) |
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