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February 8-12 model Discussion II


Isopycnic

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HPC forecast precip Wed/Thur

It always amazes me how HPC's maps usually show a solution that's no current model is showing. I guess they make their forecasts based on climatology and model biases. More often than not, they are correct. I remember many potential storms where almost every model was showing snow for most of the southeast and their maps would be right through the mountains, northern foothills and up through VA. Does anyone have a link to the maps that has areas circled pretty colors with titles like "heavy snow possible?" I can't remember if it's HPC or CPC that puts those out.

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It always amazes me how HPC's maps usually show a solution that's no current model is showing. I guess they make their forecasts based on climatology and model biases. More often than not, they are correct. I remember many potential storms where almost every model was showing snow for most of the southeast and their maps would be right through the mountains, northern foothills and up through VA. Does anyone have a link to the maps that has areas circled pretty colors with titles like "heavy snow possible?" I can't remember if it's HPC or CPC that puts those out.

http://www.hpc.ncep.noaa.gov/wwd/winter_wx.shtml

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The runs today were not very good for a major winter storm, especially for western NC. I do expect the models to trend wetter as we move forward. Additionally, snowfall ratios will be rather high with this type of storm. In the end, I would not be surprised if the eastern side of the Blue Ridge and the coastal sections of NC are the big winners. Models will not begin to see the meso banding that occurs over the foothills of NC until time for the storm. We will know more information on this storm at 12z tomorrow and especially on Tuesday at 12z. This could also be one of those storms where the models shift 50-100 miles north 24 hours before the storm. This is an interesting possible winter storm before warmer weather arrives.

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My current assessment on chances for snow for Atlanta:

No snow 30 %

trace of snow 20%

0.1-1.0" 20%

1.1-2.0" 15%

2.1-4.0" 10%

4.1+" 5%

So, I'd take the Euro's 2-3" in a heartbeat as the odds are much higher that there'd be less, if any, snow.

I give myself a 50/50 shot of seeing something. If tomorrows system comes in more robust, and keeps that trend going, I'll fell better about things. Seeing all that cold air vanish and a heat wave coming is not very encouraging. Kind of looks like your contest will go to someone in the less extreme range :) T

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The reason that they say "little or none" is because they don't know. Stop jumping the gun, sit back, and just watch things unfold.

Jumping the gun ? I'm just stating what they put in the forecast. I don't know what you're talking about jumping the gun? I know they will not put out accum yet, heck they don't even know if it will snow yet...... :huh:

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Thanks Jon. This isn't the link I was talking about, though. I'm looking for the one that shows the US map and will show all weather potentials for the day. One might be for heavy rain, one might be heavy snow Feb 10, or thunderstorms. I'm sure that someone will post it in the next few days.

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Thanks Jon. This isn't the link I was talking about, though. I'm looking for the one that shows the US map and will show all weather potentials for the day. One might be for heavy rain, one might be heavy snow Feb 10, or thunderstorms. I'm sure that someone will post it in the next few days.

Oh ok, I'm not sure about that one. That's as close as I got to circles with pretty colors saying heavy snow possible. haha... I'd like to know as well!

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Everyone seems so down here about snow next Thursday. I thought I would check the board because WRAL just posted on facebook that the models are showing the system more south now and the chance for snow here looks greater, but the amounts look less.

Our snow chances are actually looking up, Brick! It is becoming increasingly likely that we see snow and probably an all-snow event. The question now is how much moisture we will have to work with, which is a bit of problem given most of the modeling right now, but we'll probably see this thing trend a little more NW towards what the ensemble mean is right now (though that's no guarantee). However, even if we don't have as much moisture to work with, a light snow event is quite likely at this point for Raleigh, IMO, with a larger event on the table, as well. And I know you would take a 1-3" or 2-4" event any day! thumbsupsmileyanim.gif

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It always amazes me how HPC's maps usually show a solution that's no current model is showing. I guess they make their forecasts based on climatology and model biases. More often than not, they are correct. I remember many potential storms where almost every model was showing snow for most of the southeast and their maps would be right through the mountains, northern foothills and up through VA. Does anyone have a link to the maps that has areas circled pretty colors with titles like "heavy snow possible?" I can't remember if it's HPC or CPC that puts those out.

Oh ok, I'm not sure about that one. That's as close as I got to circles with pretty colors saying heavy snow possible. haha... I'd like to know as well!

This is what you're looking for.

p_threats.gif

To get it in the future, go to http://www.cpc.ncep.noaa.gov/ and under "U.S. Hazards Assessment" hit "Precip.".

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It always amazes me how HPC's maps usually show a solution that's no current model is showing. I guess they make their forecasts based on climatology and model biases. More often than not, they are correct. I remember many potential storms where almost every model was showing snow for most of the southeast and their maps would be right through the mountains, northern foothills and up through VA. Does anyone have a link to the maps that has areas circled pretty colors with titles like "heavy snow possible?" I can't remember if it's HPC or CPC that puts those out.

Their precip totals are usually way too high. They must add all totals of all the models together or something. :headscratch:

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Surprise! NO SUPER STORM per JB 3pm

Neg pna is doing the dirty work, But a weaker more southern track will supply more snow from North Texas into the coastal mid atlantic. Said it may hit 80 in Dallas next week 70 in DC. I gotta sharpen my lawn mower blades, lol :sizzle:

i am ready for decent weather if it is not going to snow but definitely not ready to mow. Got to much work to complete before we think about mowing

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Nobody loves snow more than me, But to be honest I'm about ready for spring, My kids need to get outside and play some.... :P

I posted earlier we need to enjoy whatever we get from this event Thursday. Next week is a wash and then your only looking at a possible 2-3 week window climo wise outside the mtns. With the constant -NAO a faded memory Im gonna enjoy this one because I put the higher odds in favor this might be the last accumulating snow for the season IMBY. Hope I'm wrong, but the reality is by th last week of FEB the sun angle is equal to late October. Not only do you have the normal obstacles we face of getting a snow storm in our area, but you have to fight the warmer ground and longer daylight hours e.t.c.

I like where we sit at the moment and beleive the ensembles have the right idea. Hopefully we can get some more robust qpf. Rather be rooting for qpf then the cold pendellum to swing in our favor from 4 days out.

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Guys, I know its not looking like a big deal now but it's way too early to write this off. If models still look pathetic in 48 hours ill jump ship but way too early to be doing so now.

Even though 18z gfs look pathetic precipwise aloft is looking better. I wouldn't be surprised if precip begins ramping in the next few runs.

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don't understand if the storm is a lakes cutter it goes north and blows up to a huge snowstorm and now its coming south along the coast we can't buy any snow, well at least not a nice storm4 inches or better know we're 4 days out so i'm still hoping

This storm has trended really pitiful. Thats life living in the south with snow chances I guess. Storm goes lakes cutter and its pretty much a guarantee 5 days out. if its showing a southern storm, It dissapears more often than not lol.

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Surprise! NO SUPER STORM per JB 3pm

Neg pna is doing the dirty work, But a weaker more southern track will supply more snow from North Texas into the coastal mid atlantic. Said it may hit 80 in Dallas next week 70 in DC. I gotta sharpen my lawn mower blades, lol :sizzle:

Just did. Tractor is ready to ride. Bring on spring! :sun:

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Climo says we will be too warm if we don't have this thing track through North Central FL in CAE to keep us all snow. The rest of the storms this year have been a different beast and went against climo for us. We need this one to track like the Euro shows on 12z to have a chance of anything other than a brief bout of mix before the change to rain happens and even then with the storm being a bit weak, the moisture may have an issue amounting to a nice snow.

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Reading the AFD's from Birmingham and Huntsville is rather humorous. HSV relying on Euro ensembles while BMX saying it's going to be a weaker system.

HSV

THE LATEST ECMWF ENSEMBLE MEAN SOLUTION HAS

TRENDED SLIGHTLY STRONGER AND A BIT FURTHER TO THE NORTH WITH THE

CRITICALLY IMPORTANT TRACK OF THE SURFACE LOW...BUT AT THIS TIME WE

ONLY HAVE SUFFICIENT CONFIDENCE TO STATE THAT SNOW IS LIKELY AND THAT

ACCUMULATING SNOWFALL IS HIGHLY PROBABLE...GIVEN STRENGTH OF COLD AIR

MASS THAT WILL BE IN PLACE. THIS SYSTEM WILL CONTINUE TO BE MONITORED

CLOSELY...AS IT HAS THE POTENTIAL TO BE A SUBSTANTIAL WINTER STORM

FOR THIS REGION.

BMX

OVERALL...TRENDS ARE DOWN AND IT IS

BECOMING LESS LIKELY THAT A SIGNIFICANT SNOW EVENT WILL OCCUR.

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