Wintry Winter Storm Dec 7-10

[accu35]

Second wave starting to move now hr 39.

 

[Webberweather53]

NAM is underreporting precip. Shows no rain this morning for ATL area BUT....
Here is the live radar view as of 9am:

Some of that precipitation is likely virga over portions of north-central Alabama and the finger of reflectivity protruding towards the metro. Also have to keep in mind w/ base reflectivity, the beam height increases w/ disturbance away from the radar site so as you look further away from Atlanta towards say Alabama you're actually looking up higher aloft where it is raining harder than at the surface

 

[Storm5]

Second wave starting to move now hr 39.

Yeah not sure what the issue is . The wave that will produce is just getting going on the 12z bam. Moving NE out of the gulf

 

[accu35]

Snow breaking out south texas

 

[Webberweather53]

The entire trough base in the NAM is becoming less positively tilted as this emerges from Texas w/ the southern stream disturbance speeding up relative to previous 2 runs and the longwave trough axis and accompanying northern stream disturbances slowing down.

 

[accu35]

Could we get moisture pulled further west?

 

[MotoWeatherman]

Not necessarily. It's just finally getting a clue on the Thursday wave.

Would be good for getting colder/dryer air to settle in!?

 

[WeatherWatch]

It's looking like it will be another hit on the 12z NAM.

 

[accu35]

 

[RollTide18]

This one is gonna be a good one

 

[WXinCanton]

ATL about to get nailed looks like.

 

[Parker]

Here comes the surge north at 51...

 

[Webberweather53]

The NAM is trending towards a more intense storm, the trough axis becoming less positively tilted, the upper level jet juxtaposition looks to be improving over the last few runs and the gulf low is stronger this time by a couple mb

 

[tractor girl]

Could we get moisture pulled further west?

12z

06z

 

[RollTide18]

The NAM is trending towards a more intense storm, the trough axis becoming less positively tilted, the upper level jet juxtaposition looks to be improving over the last few runs and the gulf low is stronger this time by a couple mb

Somebody is gonna get warm nosed

 

[accu35]

Some heavy rates i imagine

 

[tractor girl]

Somebody is gonna get warm nosed

Is that too far up?

 

[RollTide18]

Should be a nice clown map

 

[MotoWeatherman]

Very minor changes in the upper levels make all the difference at the surface. Like Webber stated the trough is less positive tilted and also a tad deeper across TX. This allows slightly more ridging ahead of it allow better moisture transport north on Friday.

12z NAM...

Vs...6z NAM...

 

[Snowflowxxl]

ATL getting pounded