Now that the sun is out after all that rain, it's going to get hot and incredibly humid. Bleah.

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David
Sitting on my butt while others boldly go,
Waiting for a message from a small furry creature from Alpha Centauri.

Currently 102F, heat index 97F, feels like 97F, predicted high 108F, Sunday high 107F..

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

77ºF at 2 PM I'll make it today. :))

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Cheers everybody
Life is short so don't sip
Beer speaks, people mumble

Currently 107F, heat index 100F, feels like 100F, predicted high 108F, Sunday high 107F..

Dew point? 26F, last time that was 33F, you'll never see Dew out here...

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

Forecast 99-103 all week.
Looks like 98F on the back porch right now.
AC set for 78F, a little warm but better than outside.

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Donald
Infernal Optimist / Submariner, retired

110F predicted for Sunday by the weather channel, My AC is set for 76F, at the PC it's 82F, farther away 80F. This is the best that I can afford, I don't get enough for better than window ac. I still need to replace 3 windows, but I'm a ways short of that goal.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

You want dewpoint? I'll give ya dewpoint. Official report a few miles down the road at Plainfield was 72. F. That enough dewpoint for ya?

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David
Sitting on my butt while others boldly go,
Waiting for a message from a small furry creature from Alpha Centauri.

Not official but my car and some signs were reporting 113f. Officially its 108 and getting hotter for the next several days.
Guess it's all my fault.

You want dewpoint? I'll give ya dewpoint. Official report a few miles down the road at Plainfield was 72. F. That enough dewpoint for ya?

I've never really understood the concept of dewpoint.

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The mind is a weird and mysterious place

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

Humidity is a relative number. The hotter the air the more water it can hold. Colder air holds less. Humidity cannot exceed 100% (there are exceptions) So as air cools humidity rises until it reaches 100% At that point the water will condense leaving the air at 100%.

Does that help?

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

---

The mind is a weird and mysterious place

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

When I grew up in Dominguez CA, zip code of 90810(a North Long Beach zip code, the area was annexed into the City of Carson), I'd see dew on plants and on the ground in the morning, those mornings the temps were cool outside.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

Practically cloudless @ 10°C

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rOZZ
Music
Pictures

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

Even more fun is the triple point - the temperature and pressure at which a material can exist as solid, liquid and vapour at the same time (273.16K, 0.6117kPa for water).

Ain't science fun :-)

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

56°F/13°C, overcast/light rain, Mon.-this AM. Thunderstorms, 12:00-07:00 PM.
forecast.

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

Think of air as a cup. The hotter the air/cup gets the larger it gets (the cup expands) The colder it gets the cup/air shrink. If the cup is full and its 80 degrees then it has 100% humidity, it's full. If the cup/air get colder the water wil spill out of the cup (dew). Some of water spills out and some goes back in. That is both states. The water will spill out and fall back in. Constantly in flux.

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

Think of air as a cup. The hotter the air/cup gets the larger it gets (the cup expands) The colder it gets the cup/air shrink. If the cup is full and its 80 degrees then it has 100% humidity, it's full. If the cup/air get colder the water wil spill out of the cup (dew). Some of water spills out and some goes back in. That is both states. The water will spill out and fall back in. Constantly in flux.

That's actually a pretty good analogy, and makes sense (sort of ;~)). They always mention dewpoint on the weather, and I've never understood why the general public would need to know the dewpoint temp.

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The mind is a weird and mysterious place

Back east dew comes on a regular bases but right now here dew point is rocks falling from the sky. LOL

Yes if they say the dew point is temp 55 then when it hits 55 you will see it on your windows on your car. Not always perfect but close.

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Cheers everybody
Life is short so don't sip
Beer speaks, people mumble

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

Think of air as a cup. The hotter the air/cup gets the larger it gets (the cup expands) The colder it gets the cup/air shrink. If the cup is full and its 80 degrees then it has 100% humidity, it's full. If the cup/air get colder the water wil spill out of the cup (dew). Some of water spills out and some goes back in. That is both states. The water will spill out and fall back in. Constantly in flux.

That's actually a pretty good analogy, and makes sense (sort of ;~)). They always mention dewpoint on the weather, and I've never understood why the general public would need to know the dewpoint temp.

To me, what it means is if the dewpoint is above the low 60s in the summer, it's humid out. Above 67, it's really incredibly muggy, regardless of what the temperature is.

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David
Sitting on my butt while others boldly go,
Waiting for a message from a small furry creature from Alpha Centauri.

Dew Point is the temperature at which the water vapor condenses into liquid water at the same rate at which it evaporates. At temperatures below the dew point, water will leave the air. The condensed water is called dew when it forms on a solid surface.

How can it do both at the same time?

Think of air as a cup. The hotter the air/cup gets the larger it gets (the cup expands) The colder it gets the cup/air shrink. If the cup is full and its 80 degrees then it has 100% humidity, it's full. If the cup/air get colder the water wil spill out of the cup (dew). Some of water spills out and some goes back in. That is both states. The water will spill out and fall back in. Constantly in flux.

That's actually a pretty good analogy, and makes sense (sort of ;~)). They always mention dewpoint on the weather, and I've never understood why the general public would need to know the dewpoint temp.

A few reasons are that dew point determines how uncomfortable you will feel on a warm summer day or how cold the winter day will feel. It determines whether it will rain or snow. The dew point determines how high the fire danger is during a dry spell. On small aircraft it lets me know if there is a risk of iceing.