• Member Statistics

    16,116
    Total Members
    7,904
    Most Online
    Irish
    Newest Member
    Irish
    Joined
Sign in to follow this  
Holston_River_Rambler

NAM vs the Euro cage match storm, Feb 20 - 21

Recommended Posts

I think this is going to be interesting... Dewpoints around the valley are intriguing. My dewpoint currently is 29, most locations from a line from Dayton to Athens and north are around or below freezing except nearest to the Eastern mountains and far southern valley where dewPoints are in the mid to upper 30's.

Sent from my SM-G965U using Tapatalk

  • Like 2

Share this post


Link to post
Share on other sites
18z GFS sounding went from 42 to 36 at surface vs 12z due to more moisture/evap cooling..still a little too warm (for southern valley)


the main thing here IMO is that’s a big correction this late in the game.


.

Share this post


Link to post
Share on other sites
1 hour ago, tnwxwatcher said:

Wonder what our chances of staying semi-clear for a while are through the night to get some of that good radiational cooling?

Then I wonder about evaporative cooling at the onset of the precip or will any of that play any factor in this current upcoming scenario?

Looks like clouds are racing back in, even up here on the plateau. 18z NAM, unless I'm reading it incorrectly, basically shows evaporational/ wet bulb cooling. Still 46 - 47 up here. 

Share this post


Link to post
Share on other sites
31 minutes ago, ShawnEastTN said:

I think this is going to be interesting... Dewpoints around the valley are intriguing. My dewpoint currently is 29, most locations from a line from Dayton to Athens and north are around or below freezing except nearest to the Eastern mountains and far southern valley where dewPoints are in the mid to upper 30's.

Sent from my SM-G965U using Tapatalk
 

Dew points starting to crash here along the southern foothills..I agree, if the DP can get down around ~25 (no waa with system) plus radiational cooling and the inverted trof (may aide rates)..there's slot of uncertainty if the models are right about the temps..some leeway to go colder imo.

PWS in Loudon showing the DP crash moving down the valley 

20200219_175632.jpg

  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites

This is going to sound a little crazy, but now that you mention it, I can actually feel the drier air on my skin. Just went for a run at Frozen head, up to ~2000 feet and man the blue sky to the NE was blue, like it normally is when the air is really dry:

IMG_0781

Still that chilly NE wind blowing down the stream

  • Like 2

Share this post


Link to post
Share on other sites
2 minutes ago, John1122 said:

High thin cirrus clouds here. Temp is 42.4 degrees 50 percent humidity and falling. Dew point temp is 24.8. 

Interesting...NAM had 42/27 for northern plateau @6 cst

Share this post


Link to post
Share on other sites
3 minutes ago, John1122 said:

I noticed the dp is also 24 in Crossville. 

So seems most people are running ~3° colder currently on dews vs the coldest model. Yeah I definitely think you guys go WWA if radiational cooling stays on track.

Share this post


Link to post
Share on other sites

Pretty good increase on the GEFS mean for this system at 18z. For reference, there was no blue in TN on the 12z mean outside a very small sliver in NE TN.

 

image.png.dda678dd8df9f9c74a291366087a5fea.png

  • Like 1

Share this post


Link to post
Share on other sites

Location Knoxville off Pleasant Ridge road:

My current observations are:
Temp: 47° / Humidity: 54% / Dewpoint: 31°

temp and dewpoint are falling steadily



Sent from my SM-G965U using Tapatalk

Share this post


Link to post
Share on other sites
2 minutes ago, McMinnWx said:

Currently at 47 here in Athens. Don’t know if I’m reading the DP correctly, but WC app says 30. 

Sounds right...PWS in Athens is 49/31

Share this post


Link to post
Share on other sites
1 hour ago, TellicoWx said:

Will be interesting to see play out tonight...example: Athens area bottoms DP at 32 overnight on 18z NAM

Athens an hour ago was 30.5 DP now sitting at 28.1! 

Share this post


Link to post
Share on other sites
Just now, Holston_River_Rambler said:

Some mid twenty dewpoints just north of me though 

They should come down fairly quickly I think this evening based on current upstream OBV 

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.