Wrong topic Jot
"Jot Ross" wrote in message
...
in article , Charles M. Kozierok at
wrote on 6/9/04 7:56 PM:
In article iqLxc.62495$3x.24672@attbi_s54,
Meteorologically Disturbed wrote:
} In a rare event, Mt Washington not only experienced a thunderstorm
this
} afternoon, but managed to record one of the strongest thunderstorm
driven
} wind gusts in history, peaking at 106 knots (or 122 mph).
}
} METAR KMWN 091858Z 28055G62KT 0SM TS -SHRA FG VV000 11/11 RMK PK WIND
} 280106/20 OCNL LTG VC SHRAB10 TSB18 TS MOV E
Wow.. that's pretty cool. Thanks MD.
I actually saw those storms heading towards northern VT earlier and they
looked rather scary. Ours down here have been rather mundane. The temp
here dropped from 81 to 68 in less than an hour, which has been *very*
nice.
peace,
-*-
Charles M. Kozierok )
Co-moderator, ne.weather.moderated (news:ne.weather.moderated)
Join us for weather info and discussion in a civil, low-noise
environment.
Contact me for assistance in having ne.weather.moderated added to your
server.
An elementary physical pincipal assures us that air always wants to flow
from higher to lower pressure. If our planet did not rotate we would be
in
big trouble. However, more important to this question is the Coriolis
Effect which results from the spin of the Earth. This force is opposite
to
the pressure gradient force. When these opposing forces are in balance ,
the windflow will be perpendicular to these forces. Therefore, if we see
highest pressure at Block Island and lowest in Bedford, we expect to see
windflow from the west. In reality, the at/near surface wind must deal
with friction caused by trees, buildings etc which will retard the wind
and
cause it rotate counterclockwise (back) toward the area of lowest
pressure.
This rotation will be in the vicinity of 25 - 35 degrees depending upon
frictional items and speed of wind( I think?). Thus, the pressure pattern
will produce a WSW flow which for those of us in Metrowest MA will be a
downsloping flow. Parcels of air will warm adiabatically (due to increase
in atmospheric pressure only) as they sink down good sized hills to our
west
which enhances warmth in our area.
If highest pressure is to our east and lowest to our west, the surface
flow
is apt to be southerly and we do not enjoy the downslopiing effect here.
Furthermore, even though we are quite a ways from the south coast of NE, a
southerly flow will evenutal produce a marine influent which may well
squelch any chance for bigtime warmth here in Framingham/Ashland, MA.
Jot - Ashland
--
This article was auto-posted by the ne.weather.moderated Weatherbot
program. The author is solely responsible for its content.
ne.weather.moderated FAQ/Charter: http://www.panix.com/~newm/faq.txt
ne.weather.moderated moderators e-mail:
(Please put "wx" or "weather" in the subject line to avoid the spam
block.)
--
This article was auto-posted by the ne.weather.moderated Weatherbot
program. The author is solely responsible for its content.
ne.weather.moderated FAQ/Charter:
http://www.panix.com/~newm/faq.txt
ne.weather.moderated moderators e-mail:
(Please put "wx" or "weather" in the subject line to avoid the spam block.)