Laura Only Ranks 17th For Minimum Pressure

By Paul Homewood

Hurricane Laura

Hurricane Laura

Much has been reported about Hurricane Laura’s wind speeds of 130 Kts at landfall, which if true would make it the fifth most powerful hurricane at landfall to hit the US, tied with five others:

image

https://www.aoml.noaa.gov/hrd/hurdat/All_U.S._Hurricanes.html

However atmospheric pressure tells a rather different story. When Laura made landfall, the minimum pressure recorded was 938 mb. This would rank it as only tie 17th strongest.

image

https://www.aoml.noaa.gov/hrd-faq/#most-intense-hurricanes

Atmospheric pressure does not always precisely correlate with wind speeds, as surrounding air pressure can be a factor. Also smaller hurricanes, such as Labor Day and Andrew tend to have higher wind speeds, as the isobars are more tightly packed.

Nevertheless, none of these factors seem to have been relevant with Laura. Given the ways that wind speeds are measured have changed over the years, atmospheric pressure should always be regarded as a more accurate comparison of a hurricane’s strength. Indeed, pressure is the main way in which windspeeds have been measured in the past, when there was little ground data available.

Laura may have had wind speeds of 130 Kts, as claimed. But the logic suggests many more storms had higher wind speeds in the past than the official records show.

via NOT A LOT OF PEOPLE KNOW THAT

https://ift.tt/2YSq6tY

August 31, 2020 at 11:30AM

Author: uwe.roland.gross

Don`t worry there is no significant man- made global warming. The global warming scare is not driven by science but driven by politics. Al Gore and the UN are dead wrong on climate fears. The IPCC process is a perversion of science.