Re: Funny Weather
- From: don@xxxxxxxxxxxxxx (Don Klipstein)
- Date: Tue, 9 Oct 2007 03:55:47 +0000 (UTC)
In <7fjlg35iik3jhc4nh5mh3dpoctudeiugjt@xxxxxxx>, John Larkin wrote:
On Mon, 08 Oct 2007 16:21:16 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx> wrote:
It's HOT in New York... 84°F, 52% humidity
It's COOL in Phoenix... 94°F, 9% humidity... last night had to eat
indoors because of the chill ;-)
...Jim Thompson
Commenting on weather reported by Jim Thompson...
Monday 10/8/07 high temperature conditions in these two cities...
NYC: The high for that day appears to me to have been 89 degrees F,
probably a record. Extrapolate relative humidity for same dew point as 84
degrees F 52% R.H. (65 degrees F), and I figure 44-45% R.H. when NYC
achieved 89 degrees F that day.
Heat index for 89 degrees F at 45% R.H. or 65 degree F dewpoint:
Most Google hits support 93 degrees F, with a few supporting as low as
91 degrees F.
Phoenix AZ:
It appears to me that the high for that day was 96 degrees F. I allow
the relative humidity to have gone down a point from 9 to 8 percent.
Best I can get from top Google hits is:
http://www.tvweather.com/awpage/heat_index_chart.htm
Gets to be a bit of extrapolation combined with interpolation, but it
appears to me that the ehat index at time of peak temperature was close to
89 degrees F.
Also notable: Departure from normal high temperatures for NYC and
Phoenix, according to:
http://www.weather.com/maps/maptype/currentweatherusnational/
usdeparturefromnormalhighs_large.html?clip=undefined®ion=
undefined&collection=localwxforecast&presname=undefined
Phoenix had that day's high temperature 3 degrees above normal and NYC
had that day's high temperature high 21 degrees above normal.
The low temperatures for that day failed to show at weather.com, but the
early morning lows for Monday 10/8/07 were shown to be 67 F for NYC and 61
degrees F for Phoenix, according to:
http://www.weather.com/maps/maptype/currentweatherusnational/
usactuallowtemps_large.html?clip=undefined®ion=undefined&collection=
localwxforecast&presname=undefined
I am finding for now, Phoenix to have "average low" this time of year to
be 67 degrees F and average high to be 90 degrees F, so it appears to me
that the average temperature for the day was close to "normal" for time of
year in Phoenix (high 6 degrees above normal, low 6 degrees below
normal). And that NYC was outright having a heatwave, that Philadelphia
and its suburbs shared in. Drops of my sweat fell along with daily
temperature records! (Philadelphia hit 89 degrees F, breaking the
previous record for the date of 84 degrees F.)
(Notable, Philadelphia's record for two days before, 10/6, is one of
the high tough-to-break ones, 96 degrees F! That one could survive
another century even if the global average temperature warms up so much as
2 degrees C within the next century!
Same story for temperature averaged over the month of January in
Philadelphia - 1932 has a record made to be broken later rather than
sooner! Expect a few "Second Warmest Januarys Ever" in Philadelphia in
the middle and late part of this century, maybe one or two in the next
couple of decades, but good chance of Philadelphia not having a January
warmer than that of 1932 before 2200!)
- Don Klipstein (don@xxxxxxxxx)
.
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- Funny Weather
- From: Jim Thompson
- Re: Funny Weather
- From: John Larkin
- Funny Weather
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