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December 21-22 inverted trough/retro precip midweek threat


MaineJayhawk

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Yeah I don't get. I thought it would look similar to 12z at first.

Well hopefully it doesn't do that in the future. It has moisture rotating SW from Maine at least...we'll see as we get closer. We saw the GFS lack the Maine energy but handled the lakes s/w fine...Euro is the reverse. But both mean less precip of course...we need them to work in tandem.

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So in other words there really isn't any inverted trough on the Euro it sounds like...

It's a very weak signal. The vortmax forcing the inv trough is there in Maine, but we don't get the second vortmax coming from the Great Lakes to enhance the trough and assoc moisture with it. The second vortmax causes additional divergence and instability with falling heights.

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Well hopefully it doesn't do that in the future. It has moisture rotating SW from Maine at least...we'll see as we get closer. We saw the GFS lack the Maine energy but handled the lakes s/w fine...Euro is the reverse. But both mean less precip of course...we need them to work in tandem.

:lol:

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Kind of odd soloution....originally looked like a whiff, then a hugger, but it veers to the ene after threatening to pull a Jan 2000.....not a bad run, but I think alot of us would want it east a bit....not w ne, though.

Wrong thread...we're in the other one.

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Yeah--with the exception of the extreme eastern coastline, Mass/CT has gone from wide-spread warning to sub advisory snows. At least it would provide much needed freshening of the ground.

Remember ruile number one: some snow is always better than no snow.

16.6/11

Good rule.

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Box has significantly upped the chance for snow here. Still a 50/50 deal.

Adiditonally, we have one fo the few (first??) times this season in which the forecast is showing two snow events in it. With respect to the Tuesday night/Wednesday periods, I find it interesting they use "snow" and not "snow showers". I suspect that'll change; maybe they were pressed for space. lol

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GGEM/NAM are decent advisory snows.,..GFS/Euro not as much..with the GFS giving nothing yet that's what they'll run with since it's the GFS

I don't see the 06NAM as adivsory. I'd put it in the sub-advisory category. I think CWEAT will recommend reducing the NAM qpf and offer a few hundreths.

I'd love advisory snows. I think the only advisory's we've had so far this season were of the "mix" variety.

EDIT: Above excludes east coast/ME

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GGEM/NAM are decent advisory snows.,..GFS/Euro not as much..with the GFS giving nothing yet that's what they'll run with since it's the GFS

Wow, that's quite a duo to have on our side. The NAM is such a tease, I'm not sure I want to get BB over anything it portrays.

Adiditonally, we have one fo the few (first??) times this season in which the forecast is showing two snow events in it. With respect to the Tuesday night/Wednesday periods, I find it interesting they use "snow" and not "snow showers". I suspect that'll change; maybe they were pressed for space. lol

The AFD was underwhelming and ALB's forecast for adjacent zones looks rather lackluster. Such a fickle thing. Like you, I'll be happy with a refresher. The couple inches on the ground now should have no problem surviving this week but a little more for insurance would be good. Just glad a White Christmas is a virtual lock here.

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It looks like BOS may come very close to the 303 day record of longest time between measurable snows. Last chances: Tues/Wed. If we don't get that, then even if the 12/25-6 storm happens we may at least tie depending on the ultimate timing.....gonna be close.

A dubious honor. Hope that record bid ends up being a fail.

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The AFD was underwhelming and ALB's forecast for adjacent zones looks rather lackluster. Such a fickle thing. Like you, I'll be happy with a refresher. The couple inches on the ground now should have no problem surviving this week but a little more for insurance would be good. Just glad a White Christmas is a virtual lock here.

From ALY AFD. Who the hell wrote this????? lol

THE EXCEPTION WAS

THE 00Z OPERATIONAL NAM RUN WHICH INDICATED MUCH MORE WIDESPREAD

MOISTURE SPREADING WESTWARD...RESULTING IN WIDESPREAD LIGHT SNOW FOR

MOST OF THE REGION TUESDAY THROUGH WEDNESDAY NIGHT. HOWEVER...THE

06Z NAM RUN HAS ALREADY BACKED OFF THIS GLOOMY SCENARIO AND IT IS

BACK TO FORECASTING THAT SPOTTY LIGHT SNOW IS POSSIBLE DURING THIS

PERIOD.

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From ALY AFD. Who the hell wrote this????? lol

THE EXCEPTION WAS

THE 00Z OPERATIONAL NAM RUN WHICH INDICATED MUCH MORE WIDESPREAD

MOISTURE SPREADING WESTWARD...RESULTING IN WIDESPREAD LIGHT SNOW FOR

MOST OF THE REGION TUESDAY THROUGH WEDNESDAY NIGHT. HOWEVER...THE

06Z NAM RUN HAS ALREADY BACKED OFF THIS GLOOMY SCENARIO AND IT IS

BACK TO FORECASTING THAT SPOTTY LIGHT SNOW IS POSSIBLE DURING THIS

PERIOD.

Grounds for a summary execution in my book. You never know where a snow hater will be able to infiltrate. They should use better screening procedures.

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For really short term guidance, which has done quite well for central/northern Maine is the HRRR model (it nailed the northeastern Aroostook rainstorm from a couple of weeks ago when the other guidance insisted all snow even within 12 hours of the event). It only goes out 15 hours, but it gives some hints at what may be in store. http://rapidrefresh.noaa.gov/hrrrconus/

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