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re: Snow Tease for Baton Rouge (Saturday) UPDATE (1/20)

Posted on 1/18/22 at 11:15 am to
Posted by jimbeam
University of LSU
Member since Oct 2011
75703 posts
Posted on 1/18/22 at 11:15 am to
I already stocked up on toilet paper this morning
Posted by LegendInMyMind
Member since Apr 2019
75105 posts
Posted on 1/18/22 at 11:16 am to
quote:

FV3

I haven't even thought to look at it for the Winter weather.
Posted by LegendInMyMind
Member since Apr 2019
75105 posts
Posted on 1/18/22 at 11:16 am to
quote:

I already stocked up on toilet paper this morning

No milk and bread? Amateur.
Posted by TDsngumbo
Member since Oct 2011
50719 posts
Posted on 1/18/22 at 11:20 am to
I just can’t wait to cook a gumbo all day Friday since I’m gonna be off. Going to be a perfect gumbo slow cooking kind of day!
Posted by jimbeam
University of LSU
Member since Oct 2011
75703 posts
Posted on 1/18/22 at 11:21 am to
I already have a milk cow and a couple sacks of flour as well
Posted by LegendInMyMind
Member since Apr 2019
75105 posts
Posted on 1/18/22 at 11:22 am to
quote:

16 of 20 ensemble runs within the 16z GEFS are calling for some amount of frozen precip in S. Louisiana. That's a good many more than yesterday.

To compare to what the ensembles were showing yesterday:

quote:

GEFS ensemble products are split 13-5 against any measurable snowfall in South Lousiana.


Ignore my math. I don't know why I only counted 18 yesterday.

So, we've gone from most showing no frozen precip for South Louisiana to most showing a large swath in the area getting freezing rain in the span of 24 hours.
Posted by TDsngumbo
Member since Oct 2011
50719 posts
Posted on 1/18/22 at 11:23 am to
Looks like a trend to me!
Posted by LegendInMyMind
Member since Apr 2019
75105 posts
Posted on 1/18/22 at 11:31 am to
And, for what it's worth, on the 12z GEFS run which is still running but far enough along to see, 18 of 20 ensembles now show some amount of frozen precip in S. Louisiana.
Posted by heatom2
At the plant, baw.
Member since Nov 2010
13090 posts
Posted on 1/18/22 at 11:32 am to
quote:

And, for what it's worth, on the 12z GEFS run which is still running but far enough along to see, 18 of 20 ensembles now show some amount of frozen precip in S. Louisiana.


Goddamnit
Posted by BananaManCan
Member since Sep 2009
4353 posts
Posted on 1/18/22 at 11:32 am to
Roads are gonna be completely fricked on Friday.
Posted by TDsngumbo
Member since Oct 2011
50719 posts
Posted on 1/18/22 at 11:35 am to
Hmm… it’s only Tuesday but the trends do look to be for some type of ice event for south Louisiana. Still a lot of time for this to change, though.
Posted by LegendInMyMind
Member since Apr 2019
75105 posts
Posted on 1/18/22 at 11:36 am to
quote:

Still a lot of time for this to change, though.

A fricking eternity for a Southeastern Winter weather event.
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 1/18/22 at 11:37 am to
quote:

Looks like it’s only going to be below freezing for a couple of hours then quickly get back to the 40s


Its fluid baw, with potential for all day 30s Friday. Snow is off the board but still have some freezing rain/sleet potential for BR and the Northshore.
Posted by bayoubengals88
LA
Member since Sep 2007
24654 posts
Posted on 1/18/22 at 11:38 am to
quote:

Models continue to struggle with resolving the track of a shortwave that`s yet to develop.
The setup will be moisture overrunning cold air already in place. How far north over the CWA that moisture moves will generally determine the chance for freezing rain or sleet.
Say those 2 forms of frozen precip as model soundings at BTR and MCB show a low/mid level warm nose that will melt any flakes aloft. One limiting factor also seen on those soundings is dry air just above the surface. There`s certainly some potential to continue to monitor but this still looks like a near game day decision.
This post was edited on 1/18/22 at 11:40 am
Posted by bayoudude
Member since Dec 2007
25907 posts
Posted on 1/18/22 at 11:40 am to
Seems that the majority of snow events in the Deep South called for snow being off the board. If they calling for ice I wouldn’t be surprised to see some snow. Hell they had flurries in Houma this past weekend when nothing was supposed to be possible south of the lake
Posted by bayoubengals88
LA
Member since Sep 2007
24654 posts
Posted on 1/18/22 at 11:46 am to
quote:

Hell they had flurries in Houma this past weekend when nothing was supposed to be possible south of the lake
Based on what I've observed since 2014, the mets do a good job of predicting whether the precip will fall as snow or rain.

Maybe someone can weigh in on why the column was colder allowing for flakes with warmer ground temps on Sunday vs. the below freezing ground temps and warm nose that we'll see upcoming.

What accounts for the difference? Different type of storm setup?

Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 1/18/22 at 11:47 am to
Its what is going on 2000 feet up. Warm air will be pushed in up over a surface layer of cold air. Its just going to be above freezing above the ground and once snow melts, it cant come back as anything but sleet.
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 1/18/22 at 11:52 am to
quote:

Maybe someone can weigh in on why the column was colder allowing for flakes with warmer ground temps on Sunday vs. the below freezing ground temps and warm nose that we'll see upcoming.


Last week was an upper low (cold air aloft). Provided a source of lift and was cold aloft.

This is going to be a front basically, very cold air with it but shallow. Flow is going to push warm gulf air over the front (cold air is dense and stays below the warm) and you have a situation where youre risking an ice storm.
Posted by The Boat
Member since Oct 2008
177288 posts
Posted on 1/18/22 at 12:10 pm to
quote:

and once snow melts, it cant come back as anything but sleet.

Posted by udtiger
Over your left shoulder
Member since Nov 2006
115342 posts
Posted on 1/18/22 at 1:49 pm to
Where we at in this?

Snowpocalypse?
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