Wake Me Up When September Ends..Obs/Diso

[CoastalWx]

7 minutes ago, Ginx snewx said:

Roofs?

I just go by the temp. To me, it's more symbolic vs trying to find a hint of white when the ambient air temp if 37F. 

[CoastalWx]

It's like trying to say you have snowpack when the grass is greening in 85% of your yard, but you're hanging on to the last patch of crusty glacier behind a Hemlock. 

[Typhoon Tip]

4 minutes ago, CoastalWx said:

I just go by the temp. To me, it's more symbolic vs trying to find a hint of white when the ambient air temp if 37F. 

Under good conditions I've come to find that's the car top threshold.   Clear sky, calm wind ... 37, metallic car tops will start to either solidify the dew that's there, or 'sponge frost' a layer. Maybe 38 if the night's long enough.

Right around 35 for sky exposed lawn not under a tree.

[Damage In Tolland]

18 minutes ago, Ginx snewx said:

Wet

Wettie ?

[Damage In Tolland]

Stein keeps us all rain free Fri- Sat 

https://x.com/growingwisdom/status/1707061744277815749?s=46&t=dhcbvkjmRcyBVQtDxJ3lRg

[WinterWolf]

5 minutes ago, Damage In Tolland said:

Stein keeps us all rain free Fri- Sat 

https://x.com/growingwisdom/status/1707061744277815749?s=46&t=dhcbvkjmRcyBVQtDxJ3lRg

Of course he does…that’s not a shock. 

[dendrite]

That's a quick end to summer on the fantasyland gfs.

[WinterWolf]

3 minutes ago, dendrite said:

That's a quick end to summer on the fantasyland gfs.

So no more summer for 10+ days on that model anymore….

[weatherwiz]

Going to the Big E around 5...what a stunningly lovely day. Another 10-15F warmer would be perfect but this is great stuff. 

[Typhoon Tip]

Hohoho man...  NO shit.   That 'hook low' at 500 mb thing out there would probably incur multi-faceted problems from the M/A to New England should that happen.

Fantasy fantasy fantasy

[Chrisrotary12]

Go GFS!

[dendrite]

Ukie came north as well.

[weatherwiz]

Everything going north. Seems like the only thing going south are the birds.

[CoastalWx]

Euro gonna soak. Oye.

[Damage In Tolland]

Wettie soaker E MA on Euro 

[CoastalWx]

Just now, Damage In Tolland said:

Wettie soaker E MA on Euro 

All of SNE.

[CoastalWx]

Time to flood everyone. 

[Damage In Tolland]

2 minutes ago, CoastalWx said:

All of SNE.

8.65” so far here MTD.. may as well go over a foot  Keep the double digit months rolling like all summer 

[CoastalWx]

Just now, Damage In Tolland said:

8.65” si far here MTD.. may as well go over a foot 

Lets do it. Eff it. 

[Layman]

1 hour ago, Typhoon Tip said:

Under good conditions I've come to find that's the car top threshold.   Clear sky, calm wind ... 37, metallic car tops will start to either solidify the dew that's there, or 'sponge frost' a layer. Maybe 38 if the night's long enough.

Right around 35 for sky exposed lawn not under a tree.

I'm not following how temps in the mid-30's is producing frost on surfaces.  Some synergistic effect?

Is this akin to a winter storm "making it's own cold"?

[weatherwiz]

Cowboys may be avoiding flooding rains in New England this weekend with the game in Dallas but they won't be able to avoid getting flooded with offense from the Patriots.  

[Ginx snewx]

Soaka full moon goon. Man saw the erosion at the beach from a weeks worth of pounding. Another pounding incoming.

[Ginx snewx]

1 minute ago, Layman said:

I'm not following how temps in the mid-30's is producing frost on surfaces.  Some synergistic effect?

Is this akin to a winter storm "making it's own cold"?

Evaporative cooling 

[weatherwiz]

1 minute ago, Layman said:

I'm not following how temps in the mid-30's is producing frost on surfaces.  Some synergistic effect?

Is this akin to a winter storm "making it's own cold"?

Don't forget those are 2m temperatures, it can be colder at the surface.

[Brian5671]

1 minute ago, weatherwiz said:

Cowboys may be avoiding flooding rains in New England this weekend with the game in Dallas but they won't be able to avoid getting flooded with offense from the Patriots.  

dream on...

[Ginx snewx]

1 hour ago, CoastalWx said:

I just go by the temp. To me, it's more symbolic vs trying to find a hint of white when the ambient air temp if 37F. 

 

2 minutes ago, weatherwiz said:

Cowboys may be avoiding flooding rains in New England this weekend with the game in Dallas but they won't be able to avoid getting flooded with offense from the Patriots.  

Mac Jones lol

[CoastalWx]

2 minutes ago, Layman said:

I'm not following how temps in the mid-30's is producing frost on surfaces.  Some synergistic effect?

Is this akin to a winter storm "making it's own cold"?

Surfaces like metallic bodies are good emitters of long rave radiation. So you can effectively cool a little bit more on a clear and calm night as compared to the environmental temperature. Roofs and grass blades do to a point as well. 

[dendrite]

1 minute ago, Layman said:

I'm not following how temps in the mid-30's is producing frost on surfaces.  Some synergistic effect?

Is this akin to a winter storm "making it's own cold"?

The ground and other surfaces lose heat to space. So the 2m air temp is cooled from the ground-upward. You will tend to see frost or frozen dew form on those colder surfaces before the 2m temp can reach the freezing point.

[ineedsnow]

12z EURO floods

[Layman]

Thanks everyone for the quick and concise answers.  That was something I've seen talked about a lot over the years but didn't clearly understand.  Interesting stuff.