Mike,

On Tue, 31 May 2005 15:10:50 -0500, Mike Hord wrote:

> Wikipedia tells me that the highest and lowest ever recorded
> barometric pressures are 108.57 kPa and 86.996 kPa,
> respectively.  It also tells me that "standard" atmospheric
> pressure is 101.325 kPa.  What it does NOT tell me (nor
> does anywhere else) is what the "normal" range is; that is,
> if a good, strong thunderstorm passes through, what can
> I expect the pressure to be?  Likewise, in a typical high
> pressure area, what can I expect the pressure to be?

The lowest I've ever encountered was 895mBar (=hPa)
the highest was 1045mBar (hPa)

The fastest change I've seen was in the late 1980s when there was a fast moving, really deep Low, and a drop 
of around 5mBar/hr was sustained for over three hours.  It almost made your ears pop!  :-)

As a matter of (little) interest, it's currently 1015 mBar here, having fallen 4mBar over 9 hours, and it's 
just started raining!

Cheers,


Howard Winter
St.Albans, England


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