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Winter Wx Discussion 2014/2015

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Re: Winter Wx Discussion 2014/2015

Post by Toot on 2015-02-23, 6:36 pm

Math/Met wrote: This setup is aided by a Cold Air Damming type of flow in NC.  This forces wind over WNC to have an easterly component, and this could cause convergence along  the mountains over East TN.
I noticed this too..pretty odd for that to bleed across the mtns isnt it??




Anyways... be fun to see how it plays out

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Re: Winter Wx Discussion 2014/2015

Post by Math/Met on 2015-02-23, 7:39 pm

The easterly wind component east of the mountains acts to “pinch” near the mountains where the air masses attempt to converge (along the inverted trough). This creates low level convergence and enhanced lifting. You could argue that there will be a slight upslope in the lowest levels on both sides of the mountain, which would force ascending air of course.

Here are the HRRR winds for later tonight. I tried to draw on this to give a better idea what we are discussing. Not the best graphic, but maybe it illustrates the possible scenario.


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Re: Winter Wx Discussion 2014/2015

Post by Math/Met on 2015-02-23, 7:44 pm


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Re: Winter Wx Discussion 2014/2015

Post by Math/Met on 2015-02-23, 11:07 pm

MRX Update wrote:HAVE INCREASED SNOWFALL AMOUNTS SEVERAL INCHES
OVER THE MOUNTAINS AND ALSO ACROSS THE EAST TN VALLEY AND SOUTHWEST
VIRGINIA. HAVE ISSUED A WINTER STORM WARNING FOR THE EASTERN TN
MOUNTAINS AS AMOUNTS WILL LIKELY EXCEED 4 INCHES AND MAY EXCEED
7 INCHES IN SOME LOCATIONS BY AROUND 18-21Z TUESDAY. EXPANDED
WINTER WEATHER ADVISORY TO INCLUDE THE TN VALLEY NORTH OF
CHATTANOOGA MAINLY EAST OF I-75 AND FROM ROANE COUNTY NORTH TO THE
KY BORDER. THIS IS ALMOST ALL OF EAST CENTRAL TENNESSEE AND ALSO
ADDED NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA. THE CUMBERLAND
PLATEAU COUNTIES SHOULD SEE LIGHTER AMOUNTS. THE SNOW IS STILL
EXPECTED TO BEGIN AFTER MIDNIGHT TO ABOUT 8 OR 9Z AND CONTINUE FOR
6 TO 9 HOURS BEFORE TAPERING OFF TUESDAY AFTERNOON. AMOUNTS MAY
NEED TO BE INCREASED LATER AS NEW MODEL DATA COMING IN NOW IS EVEN
HIGHER THAN WHAT WAS SHOWING EARLIER THIS EVENING. SEE THE WSW
PRODUCT FOR MORE INFORMATION.

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Re: Winter Wx Discussion 2014/2015

Post by Math/Met on 2015-02-24, 12:15 am

The 04Z RAP has .462 of precip at KTRI and .338 at KTYS.

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Re: Winter Wx Discussion 2014/2015

Post by windstorm on 2015-02-24, 5:24 am

Snowing here with 27 degrees . Ground cover. 1 inch of snow expect. The  6Z Nam model is very bullish on snow for my area on Thursday. Just ck it at 5:10 A.M. and it show 4.6 inches of snow. One of our TV weathermen said I know models are difference but he said am telling you now it going to snow. Anywhere from 1 - 3 inches starting Weds evening. Very bold to say that. Most times they will say, we will have to keep an eye on it. Let hope it is right. If it right this should lead to at least a wide spread 2 - 4 inches...... As always it could change . Mts would get more if it is right. bounce whistle pals
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Re: Winter Wx Discussion 2014/2015

Post by underdawg45 on 2015-02-24, 6:17 am

We have around 3 inches I would guess. Defiantly a good amount of snow out of this system

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Re: Winter Wx Discussion 2014/2015

Post by snowman72 on 2015-02-24, 7:26 am

I have a good 4 in on the ground here now and still snowing. Between this snow and Wednesday possible snow WOW. That would make my winter

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Re: Winter Wx Discussion 2014/2015

Post by windstorm on 2015-02-24, 7:31 am

Everything is white will about 3/4 of an inch. @ 26 degrees .. Waiting on the next round Weds & Thursday,
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Re: Winter Wx Discussion 2014/2015

Post by Neals on 2015-02-24, 9:11 am

Yeah it looks like 2-3 inches outside. Pretty nice little system. beer

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Re: Winter Wx Discussion 2014/2015

Post by etnwx on 2015-02-24, 5:59 pm

2" exactly here (I measured). I'm half way to Karns from I-640 just off Western Ave.

Nice surprise getting that much snowfall.

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Re: Winter Wx Discussion 2014/2015

Post by Jscentraltn on 2015-11-20, 6:28 pm

I haven't posted much..... Works crazy! Anyways the models have been sniffing at the end of the month for a storm, can it be? Still about 8 days away, but the gfs is starting to show this thing again... Any thoughts?




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Re: Winter Wx Discussion 2014/2015

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