Wind Speed Conversions
The definition of sustained winds recommended by the World Meteorological Organization (WMO), and used by most weather agencies, is that of a 10-minute average at a height of 10 m (33 ft). However, RSMC Miami and RSMC Honolulu, as well as the Joint Typhoon Warning Center, define sustained winds based on 1-minute average speed (also measured 10 m (33 ft) above the surface).
Studies have shown that the two definitions are correlated, with the cyclone's maximum one-minute wind speed conventionally about 14% higher than its best ten-minute one. (To convert from a one-minute wind speed to a ten-minute wind speed, the one-minute speed is multiplied by 0.88. In the other direction, the ten-minute wind speed is multiplied by 1.14 to produce the one-minute wind speed.) This relationship is approximate, as the conversion factor varies with different land or sea surfaces and atmospheric stability.
Read more about this topic: Tropical Cyclone Scales
Famous quotes containing the words wind and/or speed:
“When that I was and a little tiny boy,
With hey, ho, the wind and the rain,
A foolish thing was but a toy,
For the rain it raineth every day.
But when I came to man’s estate
With hey, ho, the wind and the rain,
‘Gainst knaves and thieves men shut their gate,
For the rain it raineth every day.
But when I came, alas! to wive,
With hey, ho, the wind and the rain,
By swaggering could I never thrive,
For the rain it raineth every day.”
—William Shakespeare (1564–1616)
“Wait, Kate! You skate at such a rate
You leave behind your skating mate.
Your splendid speed won’t you abate?
He’s lagging far behind you, Kate.”
—David Daiches (b. 1912)