"nv55" escribió en el mensaje
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I know i'm late with this, but i am just totally shocked that hurricane
Wilma reached a lower pressure than Gilbert's 888 mb in 1988. Wilma
hit 882 mb! - i never thought what was a tropical depression a few
days ago, late in the season, would smash Gilbert's pressure record.
un****ingbelievable.


And, to have a comparison, what's the pressure inside a tornado ? i.e. in
the eye of a twister ? Is it negative ?

Why are there tornadoes around the hurricanes ? I thought they were very
distinct phenomenoms ?

Leto2 wrote:
"nv55" escribió en el mensaje
oups.com...

I know i'm late with this, but i am just totally shocked that hurricane
Wilma reached a lower pressure than Gilbert's 888 mb in 1988. Wilma
hit 882 mb! - i never thought what was a tropical depression a few
days ago, late in the season, would smash Gilbert's pressure record.
un****ingbelievable.



And, to have a comparison, what's the pressure inside a tornado ? i.e. in
the eye of a twister ? Is it negative ?

As far as I recall, pressure inside a tornado vortex has
not yet been measured, but the estimates I recall reading
about several years ago were down around 900 mb.

Pressure could not be negative. Pressure represents the
weight of the air in the column above you, which is a
positive quantity.


Why are there tornadoes around the hurricanes ? I thought they were very
distinct phenomenoms ?

Tornadoes emerge from thunderstorms, and hurricanes are
large organized systems of thunderstorms. Given the correct
wind profile in the lowest part of the atmosphere, any
thunderstorm in a humid environment can produce a tornado.
Sometimes the environment in parts of a hurricane will
support a tornado because the wind profile will allow it.
So yes, tornadoes and hurricanes are distinct phenomenon.
But one does not preclude the other.

Scott

In article ,
Scott wrote:

Leto2 wrote:
"nv55" escribió en el mensaje
oups.com...

I know i'm late with this, but i am just totally shocked that hurricane
Wilma reached a lower pressure than Gilbert's 888 mb in 1988. Wilma
hit 882 mb! - i never thought what was a tropical depression a few
days ago, late in the season, would smash Gilbert's pressure record.
un****ingbelievable.



And, to have a comparison, what's the pressure inside a tornado ? i.e. in
the eye of a twister ? Is it negative ?

As far as I recall, pressure inside a tornado vortex has
not yet been measured, but the estimates I recall reading
about several years ago were down around 900 mb.

Tim Samaras got a pressure-measuring probe into the Manchester, SD
tornado in 2003 and got a pressure drop of ~100 mb in about 10 seconds
as the tornado passed over the probe.

--
Harold Brooks
Head, Mesoscale Applications Group
NOAA/National Severe Storms Laboratory, Norman, OK

Wasn't Gilbert's pressure reading at landfall? I suspect some of the
older storms had lower pressure, before airflights.

pegleg wrote:
Wasn't Gilbert's pressure reading at landfall? I suspect some of the
older storms had lower pressure, before airflights.


No. The 888 occurred after the storm left Jamaica and
before it hit Yucatan.


Scott

pegleg wrote:
Wasn't Gilbert's pressure reading at landfall? I suspect some of the
older storms had lower pressure, before airflights.


Sent too soon.

See

ftp://ftp.nhc.noaa.gov/pub/storm_archives/atlantic/prelimat/atl1988/gilbert/prelim06.gif


Scott