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June Discussion


RUNNAWAYICEBERG
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5 hours ago, Damage In Tolland said:

Today is done in CT. Sunny dry hot afternoon in progress . Front passed around noon 

 

4 hours ago, Damage In Tolland said:

I had posted everything formed East . I still don’t understand how you guys didn’t see that. We were discussing the record of no rain days at BDL, not what was falling in far eastern CT

I misunderstood.  I thought CT meant CT.

Really nice evening...81/61 after .18"

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Here comes the water issues. Unprecedented increase in water consumption around here.

As a result of the protracted hot and dry weather conditions, and more residents being home due to the COVID-19 pandemic, over the past few days alone, the RWA has seen an unprecedented increase in water use and is urging its customers to use water wisely. This has caused some residents to experience intermittent discolored water. The RWA has also received reports of fire hydrants being opened illegally, we ask that people not open hydrants, as it can be dangerous and contribute to temporarily discolored water.

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3 minutes ago, moneypitmike said:

Hey--here's a really dumb question on my part.  One of many.

What causes the size of raindrops to differ?

I always thought it was because they coalesce by colliding with each other making larger drops from small drops and figured it had something to do with the weight of the rain drop and the strength of the updraft (it needs to get big/heavy enough to actually fall to the ground).

This high speed camera sequence of a rain drop falling and breaking apart into various sized drops is also interesting.

JAAPWEq6toUjUaBf7CDmGm-650-80.jpg

Fragmentation of a 5 millimeters in diameter drop falling by its own weight relative to an ascending stream of air. The overall sequence lasts for 60 milliseconds. This process is responsible for the formation of the raindrops which wet the ground.
(Image: © Emmanuel Villermaux)
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17 minutes ago, powderfreak said:

I always thought it was because they coalesce by colliding with each other making larger drops from small drops and figured it had something to do with the weight of the rain drop and the strength of the updraft (it needs to get big/heavy enough to actually fall to the ground).

This high speed camera sequence of a rain drop falling and breaking apart into various sized drops is also interesting.

JAAPWEq6toUjUaBf7CDmGm-650-80.jpg

Fragmentation of a 5 millimeters in diameter drop falling by its own weight relative to an ascending stream of air. The overall sequence lasts for 60 milliseconds. This process is responsible for the formation of the raindrops which wet the ground.
(Image: © Emmanuel Villermaux)

That's pretty neat.  I think for the bolded, he could have just said 'responsible for the splat'.

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25 minutes ago, KoalaBeer said:

Decent looking shelf cloud looking west off my back porch in Hampton. 

ECCBB581-6865-4DCA-B737-BAE5E06D5D56.jpeg

I am staying in Hampton next Wednesday - Saturday. About 2 miles from Hampton Beach. Kinda wish we actually booked a bit closer but oh well. Do you know of any fireworks going in in NH during this window? Looks like the ones on the beach are a no-go b/c of the endangered birdies 

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5 hours ago, Lava Rock said:

doesn't look like any rain coming. what happened to the storms? the small cell currently looks to be scooting around us.:rolleyes:

it keeps missing.  GYX was forecast a moderate rainfall and then it just fizzled.  We had chances for showers and storms all week and missed every one.  When this happens it tends to keep repeating, so I think we need a pattern change for any rain.  Now they're pimping Saturday but I kinda don't believe that yet...

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3 hours ago, powderfreak said:

I always thought it was because they coalesce by colliding with each other making larger drops from small drops and figured it had something to do with the weight of the rain drop and the strength of the updraft (it needs to get big/heavy enough to actually fall to the ground).

This high speed camera sequence of a rain drop falling and breaking apart into various sized drops is also interesting.

JAAPWEq6toUjUaBf7CDmGm-650-80.jpg

Fragmentation of a 5 millimeters in diameter drop falling by its own weight relative to an ascending stream of air. The overall sequence lasts for 60 milliseconds. This process is responsible for the formation of the raindrops which wet the ground.
(Image: © Emmanuel Villermaux)

Pretty much. When the droplets become too heavy for the updrafts to support them they fall to the ground. Of course in glaciated clouds you start dealing with the bergeron process instead of collision coalescence. So you have a supercooled condensation nuclei and differences in vapor pressure between the ice crystals and water droplets. The ice crystals readily gain H20 from the vapor and grow according to their respective habit at a given temperature and RH...ie snow crystal growth by deposition. That's the majority of how most of our precipitation forms.

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2 minutes ago, Ginx snewx said:

Holy shit. I am 4.72 

We dry

05/16 62.7  46.4    T   22  0.0  0
05/17 68.8  45.9 0.00   14  0.0  0
05/18 68.4  48.3    T   12  0.0  0
05/19 65.5  39.5 0.00   15  0.0  0
05/20 70.4  38.0 0.00   12  0.0  0
05/21 80.5  38.5 0.00   14  0.0  0
05/22 84.5  49.8 0.00   18  0.0  0
05/23 74.7  40.8 0.00   19  0.0  0
05/24 68.3  36.0 0.00   11  0.0  0
05/25 64.8  41.0    T   10  0.0  0
05/26 83.4  53.9 0.00   11  0.0  0
05/27 89.3  59.2 0.00   13  0.0  0
05/28 81.4  62.0    T   18  0.0  0
05/29 85.3  68.6 0.00   22  0.0  0
05/30 74.8  59.1 0.00   18  0.0  0
05/31 59.5  36.3 0.00   24  0.0  0
06/01 60.5  35.5    T   21  0.0  0
06/02 66.6  37.0 0.01   13  0.0  0
06/03 72.8  52.1 0.10   14  0.0  0
06/04 82.3  52.3 0.00   14  0.0  0
06/05 81.8  62.8 0.03   15  0.0  0
06/06 82.4  56.0 0.20   25  0.0  0
06/07 66.9  49.3 0.00   23  0.0  0
06/08 73.0  46.0 0.00   25  0.0  0
06/09 70.4  53.0 0.00   12  0.0  0
06/10 73.1  53.9    T   16  0.0  0
06/11 78.9  54.7 0.34   17  0.0  0
06/12 78.9  53.3 0.00   16  0.0  0
06/13 64.7  45.8 0.00   16  0.0  0
06/14 68.5  46.0 0.00    7  0.0  0
06/15 70.3  51.6 0.00    7  0.0  0
06/16 78.1  48.0 0.00   10  0.0  0
06/17 82.2  48.2 0.00   10  0.0  0
06/18 87.2  53.4 0.00    9  0.0  0
06/19 87.4  61.8 0.00   11  0.0  0
06/20 87.1  65.7 0.05    7  0.0  0
06/21 88.5  63.5    T   10  0.0  0
06/22 82.4  65.6 0.00   11  0.0  0
06/23 87.3  63.8 0.00   15  0.0  0
06/24 82.1  65.4    T   15  0.0  0

 

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