Re: Wow! Big Storm in Phoenix
- From: Jim Thompson <To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx>
- Date: Mon, 01 Sep 2008 18:34:20 -0700
On Tue, 2 Sep 2008 01:04:37 +0000 (UTC), don@xxxxxxxxxxxxxx (Don
Klipstein) wrote:
In article <1q1pb49mct9ughfqkjv6filkoj9onevfcd@xxxxxxx>, Jim Thompson wrote:
On Mon, 1 Sep 2008 23:18:08 +0000 (UTC), don@xxxxxxxxxxxxxx (Don
Klipstein) wrote:
In article <XfudnYrrOYRV_SfVnZ2dnUVZ_gmdnZ2d@xxxxxxxxxxxxxxx>, Robert
Baer wrote:
Joerg wrote:
Jim Thompson wrote:
<SNIP higher level of quotation>
Yes! that is what is god about it.Don't move here! It's hotter than hell and then the wind blows ;-)
"... but it's a dry heat" :-)
Also was stationed in Redstone Arsenal AL where it feels soooo good
to have the humidity below 80% and the temperature below 90.
Over two years of that, and never got used to it...
Temperature of 90 F and RH of 80% is a dewpoint of of about 83 F.
That is a rare extreme actually for anywhere in the USA.
Weather.com publishes a dewpoint map, and the highest I ever saw on that
map was 82 F, for the worst of the heatwave of July 12-15 1995. I have
looked at that map hundreds of times, mostly at times of the year when the
numbers on that map are higher.
I tried web searching for extremely high dewpoints in the USA, and
as it turns out 86 F dewpoint does rarely turn up for localized areas in
late morning in a severe heatwave in an agricultural area favoring
humidity (Iowa cornfield or a steamy spot in Georgia).
I suspect you are remembering the RH from breakfast time and not
realizing that it drops when the temperature goes up as the day goes on.
The worst dewpoint recorded in Chicago was 83 degrees F - I think that
was on July 12 or 13 or so 1995.
The worst dewpoint I know Philadelphia to have been befallen with was
at 4 PM July 15 1995. (Unusually late in the day in a heatwave - dewpoint
on a heatwave day usually peaks in late morning or close to noon.) 102
F, 54% RH, dewpoint 82 F. The heat index was 129 F.
- Don Klipstein (don@xxxxxxxxx)
I went out to RA for lunch today... it was only 91°F over the parking
lot asphalt, but felt like WV, so I'm guessing at least 50% humidity
:-(
91 F at 50% RH is dewpoint of 70-71 F. That sounds to me just a little
or somewhat high for Phoenix area in Arizona's "monsoon season", which
Arizona is most of the way through but still in for this year.
The Arizona "monsoon season" is the mid-late summer time when humidity
doubles and spotty thunderstorms pop up here and there on many days.
RH at time of high temperature in Phoenix doubles from single digits when
the monsoon humidity comes in. As in dewpoint jumps from 40's F to upper
50's and 60's F.
- Don Klipstein (don@xxxxxxxxx)
I've lived here for 46 years. Today was EXCEPTIONALLY muggy. I know
you leftist wusses think you know it all, but I had a sample still in
mind from a week ago in WV to compare it to ;-)
...Jim Thompson
--
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