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re: Big Cold Blast Coming - Increasing chances of ice/light snow flurries Tuesday afternoon

Posted on 1/12/18 at 6:23 pm to
Posted by TDsngumbo
Member since Oct 2011
49294 posts
Posted on 1/12/18 at 6:23 pm to
IT means the odds of a big mess on roads during day on Tuesday are pretty decent. Temps are projected to be near freezing much of the day with LOTS of moisture present. Air just above the surface in BR will be slightly above freezing but above that should be freezing or below.

Translation: lots of sleet, then some snow later that evening is quite possible.
Posted by Duke
Dillon, CO
Member since Jan 2008
36439 posts
Posted on 1/12/18 at 6:39 pm to
quote:

Wut? Translation for the dummies like me, please.



Basically the models make a simulation of the temperature profile of the air above us, and with the dew points as well. A "warm nose" refers to warmer, above freezing air just above the surface. In our case, it's pretty small, so would likely support sleet falling.

"Wet bulbing" refers to when you've got a precip falling through not completely saturated air. Some of it will evaporate, which draws energy out of the air and cools it down some. It's why the inside part of your AC is the evaporator. This action can act to cool the warm air above the surface enough to make straight snow.

The model soundings looked good for sleet and snow late afternoon on Tuesday.

Actual soundings are done at NWS sites everyday btw. That's why they have weather balloons, to get all the temperature and wind direction/speed data of the air from the ground to the upper levels.
Posted by bobbyleewilliams
Tigertown
Member since Feb 2010
8417 posts
Posted on 1/12/18 at 6:47 pm to
quote:

Translation: lots of sleet, then some snow later that evening is quite possible.

Thanks to you and Duke for the interpretations. Hope this doesn't happen til after evening drive home for everyone.
Posted by Bestbank Tiger
Premium Member
Member since Jan 2005
79478 posts
Posted on 1/12/18 at 7:32 pm to
quote:

Damn sons....dem crawfish ain't nevah gonna come out the hole cher!



Price just went up 50 cents a pound.
Posted by Bestbank Tiger
Premium Member
Member since Jan 2005
79478 posts
Posted on 1/12/18 at 7:34 pm to
quote:

Last fall didn't the NWS state that the Southeast would have a warmer and drier winter? I'm not feeling it.



Farmers Almanac said cold and nasty.
Posted by OysterPoBoy
City of St. George
Member since Jul 2013
43228 posts
Posted on 1/12/18 at 7:39 pm to
quote:

get some wet bulb action


Fingers crossed I’ll be getting some wet bulb action tonight.
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
146658 posts
Posted on 1/12/18 at 7:44 pm to
quote:

Farmers Almanac said cold and nasty.

always trust the farmers
Posted by LakeViewLSU
Baton Rouge
Member since Jun 2009
17730 posts
Posted on 1/12/18 at 7:47 pm to
quote:

18z GFS sounding for BR on Tuesday during the day look promising. A bit of a warm nose present just above the ground but it's subtle and a good moist column to work with. Would actually like a little bit drier just above the surface to get some wet bulb action. Up into Alabama, the GFS seemed to let Birmingham miss out on the action but their sounding looked great for snow. Sets up that everyone in the SE needs to keep an eye on things.


I really hope there is no snow next week. It is going to cause a lot of problems and cost the area tons of money and lives. I know you guys are hoping for that.

This post was edited on 1/12/18 at 7:48 pm
Posted by BigOrangeBri
Nashville- 4th & 19
Member since Jul 2012
12797 posts
Posted on 1/12/18 at 7:48 pm to
Lololol....

Posted by LSU316
Rice and Easy Baby!!!
Member since Nov 2007
30245 posts
Posted on 1/12/18 at 7:56 pm to
Damn son I haven't been to that school since I was a student over 30 years ago probably.....still know exactly what you're talking about unless the changed it up.
Posted by YogaPants
Baton Rouge
Member since Aug 2008
4704 posts
Posted on 1/12/18 at 7:58 pm to
already snowing here south of BR
Posted by slackster
Houston
Member since Mar 2009
91386 posts
Posted on 1/12/18 at 8:03 pm to
quote:

LakeViewLSU


You're pretty much a grade-A douchebag in these threads. Tiger Rag would be proud.
Posted by Cowboyfan89
Member since Sep 2015
12970 posts
Posted on 1/12/18 at 8:06 pm to
quote:

cost the area tons of money and lives


What? You're acting like this is a hurricane.
Posted by LakeViewLSU
Baton Rouge
Member since Jun 2009
17730 posts
Posted on 1/12/18 at 8:06 pm to
quote:

Tiger Rag would be proud.




His presence was missing from these threads.
Posted by TDsngumbo
Member since Oct 2011
49294 posts
Posted on 1/12/18 at 8:07 pm to
Snowing south of BR? What?
Posted by dukke v
PLUTO
Member since Jul 2006
216210 posts
Posted on 1/12/18 at 8:08 pm to
quote:

You're pretty much a grade-A douchebag in these threads. Tiger Rag would be proud.




quote:

slackster



Shut up..............
Posted by Duke
Dillon, CO
Member since Jan 2008
36439 posts
Posted on 1/12/18 at 8:09 pm to
quote:

Snowing south of BR? What?


Posted by slackster
Houston
Member since Mar 2009
91386 posts
Posted on 1/12/18 at 8:16 pm to
quote:

dukke v


Must be amateur night in here tonight.
Posted by dukke v
PLUTO
Member since Jul 2006
216210 posts
Posted on 1/12/18 at 8:16 pm to
quote:

Must be amateur night in here tonight.




Posted by slackster
Houston
Member since Mar 2009
91386 posts
Posted on 1/12/18 at 8:19 pm to
quote:

Snowing south of BR? What?


Snow was showing up on radar over Laplace an hour or so ago. Not sure if anything made it to the ground.
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