But what if half of that .50" QPF is Sleet that still makes it a major Winter storm?Fact is, if .5 precip falls and all is frozen, that's a major winter storm around here (I know you know this) and there will be areas with much more than that. He's just trolling or being stupid, not sure which
The NAM is useless outside of 24 hours.You guys want to be realllllllllllllllly careful using NAM outputs outside of CAD and thermal boundaries.
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Yeah, .5” as sleet would be nice event.Fact is, if .5 precip falls and all is frozen, that's a major winter storm around here (I know you know this) and there will be areas with much more than that. He's just trolling or being stupid, not sure which
This is really banter at this point so my last comment on this, but a lot of us are house owners and do not want to deal with headaches we get from major ice storms. Frozen, bursting pipes... power loss/heat loss... broken trees... and go on. It's expensive and miserable to go through it.Why ? Bc I want an actual event ? God Forbid we get to live through something historic
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And yet the low stayed along the coast... just not meant to be this time apparently, crazy.For context, Feb 2014s high was 10 mb weaker as well.
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Probably also why they can often be mixed together for extended periods as wellThis is what grok says about it. but google's ai says it will only be supercooled. interesting.
correction if you ask google's ai without mentioning it being super cooled (if it will just refreeze) it will say it refreezes. So who knows? lol
Thresholds for Sleet vs. Supercooled/Freezing RainFrom meteorological guidelines (NWS training materials, sounding analyses, and research like Zerr 1997, Cys et al.):
In short: Yes, shallow cold layer → supercooled liquid drop (freezing rain on contact) instead of frozen sleet pellet. The difference often comes down to just a few hundred feet of extra cold air depth — that's why sleet and freezing rain can switch quickly over short distances in the same storm.
- Sleet favored when the subfreezing layer near the ground is deeper/thicker — commonly ~500–1,000+ feet (sometimes cited as 750–2,000+ feet or ~200–600+ meters) thick, and often colder (e.g., mean layer temp well below 0°C).
- Freezing rain (supercooled drops) dominates with a shallow cold layer — typically <500–1,000 feet (often just a few hundred feet), especially if the layer isn't cold enough or the drops are larger.
- Borderline cases can produce mixes (sleet + freezing rain), and the exact cutoff varies with:
- Drop size (larger drops take longer to freeze).
- How cold the layer is (colder = faster freezing).
- Warm layer details aloft (affects how fully melted the original precipitation is).
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No because there will be areas that will be devastated by this storm, I'm sorry it will not destroy your property, better luck next timeWhy ? Bc I want an actual event ? God Forbid we get to live through something historic. I pay my own mortgage, bought my own groceries ect so no I don’t live at home, yea it would effect me still want it
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Hopefully no areas are devastated, Hope everyone is proved wrong and get cold rain. That's my hope anywayNo because there will be areas that will be devastated by this storm, I'm sorry it will not destroy your property, better luck next time
You want a catastrophic ice storm? .5 QPF is still rather significant with this.Why ? Bc I want an actual event ? God Forbid we get to live through something historic. I pay my own mortgage, bought my own groceries ect so no I don’t live at home, yea it would effect me still want it
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Yeah that would be 1.5” of sleet. The NWS winter storm criteria for sleet is a half inchYeah, .5” as sleet would be nice event.
And the coldest run since the ICON in CAD regions as posted above. More on the way, too.
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No there’s convection in the Gulf on the fv3 that steals moisture from the Midwest and delivers it to us.Is that the convection in the Gulf stealing robbing the moisture intended for the Carolinas?
Love to see the maps. I believe that's the National Severe Storms Laboratory WRFI don't know what the heck the WRF-NSSL is, but its 0z run has accumlating freezing rain all the way down near Statesboro, Ga., Saturday night, well outside any Winter Storm Watch boxes. That model is cold as heck!
We can only hope. Front end sleet bomb then dry slot before kidney bean ZR would be the best outcome for the entire board. And would still be a sick stormIs that the convection in the Gulf stealing robbing the moisture intended for the Carolinas?
Love to see the maps. I believe that's the National Severe Storms Laboratory WRF
That makes me curious about the fv3 run. You can see the convection induced energy drive that precip blob. It might be right be certainly worth noting and pauseNo there’s convection in the Gulf on the fv3 that steals moisture from the Midwest and delivers it to us.
It is the old WRF which is no more accurate than a dart boardI don't know what the heck the WRF-NSSL is, but its 0z run has accumlating freezing rain all the way down near Statesboro, Ga., Saturday night, well outside any Winter Storm Watch boxes. That model is cold as heck!
oh wow that’s a significant shiftICON finally catching onto where the AI models have been for a number of runs now.
Exocet it to continue.
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lol c'mon now..you might want to include the next panels. 1.5 to 2 inch liquid is not nuisanceThe ICON has been moving northward with the precipitation shield all day. The trend continues. Slower, too. Approaching nuisance event around Atlanta.
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It’s not done at that point. RDU finished with 1.4 totalICON finally catching onto where the AI models have been for a number of runs now.
Exocet it to continue.
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just like the GFS 18zThe future NAM is starting to show a little more snow on the front end View attachment 187810
Ha, yes, this is complex. And I will never claim to have all the answers. For this scenario, if the snowflake melts completely in that warm layer, it can't refreeze as sleet in the cold layer because at that point, it doesn't have ice nuclei to attach to after if fully melts. Instead, it would remain as supercooled water droplets. However, the part about the sounding going back into the dendrite growth zone in the lower level that Cad Wedge mentioned (and I know you've brought it up too recently Webb), it may be possible that it could turn back to ice if it picks up ice nuclei in that lower DGZ and has time to then refreeze before it lands....maybe like what Chazwin was talking about
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NAM has that as rain, it will warm up as the coastal transfers. So only focusing on the overrunning as it has best cold temps.It’s not done at that point. RDU finished with 1.4 total
What about upstate same thing?Tbh, the more I look into this event, the more failure modes I see for big (0.5”+) ZR potential over the Piedmont of NC. I definitely am leaning more towards proportionally more sleet than I was this morning
Tbh, the more I look into this event, the more failure modes I see for big (0.5”+) ZR potential over the Piedmont of NC. I definitely am leaning more towards proportionally more sleet than I was this morning
What about upstate same thing?