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December 26-27 Storm Threat


Baroclinic Zone

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You might be right... but GGEM/UK/Euro is a hard combination to ignore. I don't really know.

All I know is I'm going home in 90 minutes and cracking open a big bottle of wine.

I am allready throwin them down hard, LOL getting myself ready for heartbreak. Seriously who knows how this will turn out but Merry Christmas to all of you!

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Well this may be answered in a few hours. This is interesting to say the least.

NCEP could take issue with the s/w and texas and the lack of continuity yet somehow it ends up with the same result but will they dare trash their own models twice? Tough tough situation.

RUC and analysis at 0z does show the NAM was a little off downstairs, but again.....minor issues probably don't equal a big change in the result.

If you guys noticed on the 5h, it's partially the tight spiral north of MN that goes ballistic at 30 hours as it merges with another s/w that really helps us. A s/w west of Hudsons now dives south at a much faster rate than that s/w kind of meandering in the flow, they come together and boom at 36 hours over Iowa.

Could there be a problem way up in Canada who knows, who cares.

EDIT the other big change is last night the NAM had a s/w strongly crashing into teh bottom of the ridge out west...it's a weak little thing now. That was a bonafide model miscue I think.

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You might be right... but GGEM/UK/Euro is a hard combination to ignore. I don't really know.

All I know is I'm going home in 90 minutes and cracking open a big bottle of wine.

that's the spirit(no pun intended) but seriously, if the 500 low is lagging won't that tug the surface low west or slow it until it closes thus increasing the QPF field

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Christmas is basically cancelled at this point. No way is anyone here gonna care...unless there a new sports car with a bow on it in the driveway.

Gotta get the EC on board. and fast.

I'm probably just waking up around midday tomorrow to go over and have Christmas dinner and then be back by the 00z models, lol.

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New from BOX... I think they mean "west"

.LONG TERM /SUNDAY THROUGH FRIDAY/...

HIGHLIGHTS

* POTENTIAL WINTER STORM SUNDAY THROUGH MONDAY.

* DRY AND MODERATING CONDITIONS FORECAST BY AROUND THE MIDDLE OF

NEXT WEEK.

PRELIMINARY ANALYSIS OF 24/21Z SREF AND 25/00Z NAM SHOWS BOTH MODELS

HAVE TRENDED SLOWER AND FARTHER EAST WITH THEIR TRACKS OF A SURFACE

LOW PRESSURE SUNDAY NIGHT INTO MONDAY. BOTH MODELS NOW TAKE THIS

LOW PRESSURE EITHER OVER OR JUST SOUTHEAST OF THE BENCHMARK OF

40N/70W. SUCH A TRACK WOULD STILL LEAVE PORTIONS OF EASTERN MA AND

RI VULNERABLE TO SIGNIFICANT PRECIPITATION. THIS WILL REQUIRE

FURTHER ANALYSIS AS THE THERMAL GRADIENT IS VERY TIGHT...WHICH

WILL LIKELY MEAN SOME PRECIPITATION TYPE ISSUES WILL BE A

SIGNIFICANT FACTOR.

OF NOTE...HPC FORECASTERS INFORMED US THAT THERE WERE MAJOR

INITIALIZATION PROBLEMS INGESTED INTO BOTH THE NAM AND GFS MODELS

TODAY. PLEASE SEE THE MODEL DIAGNOSTIC DISCUSSION ISSUED AT 143 PM

FOR DETAILS. IT IS MORE THAN LIKELY THAT THIS CAUSED SOLUTION

ERRORS...NAMELY ON THE STRENGTH AND ESPECIALLY THE TRACK OF LOW PRES

WORKING UP THE EASTERN SEABOARD EARLY NEXT WEEK. AS NOTED EARLIER...

THE ONE THING SEEN THROUGH THE LAST SEVERAL DAYS IS THE LACK OF

RUN-TO-RUN CONSISTENCY BETWEEN INDIVIDUAL MODELS ESPECIALLY THE NAM

AND GFS.

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New from BOX... I think they mean "west"

.LONG TERM /SUNDAY THROUGH FRIDAY/...

HIGHLIGHTS

* POTENTIAL WINTER STORM SUNDAY THROUGH MONDAY.

* DRY AND MODERATING CONDITIONS FORECAST BY AROUND THE MIDDLE OF

NEXT WEEK.

PRELIMINARY ANALYSIS OF 24/21Z SREF AND 25/00Z NAM SHOWS BOTH MODELS

HAVE TRENDED SLOWER AND FARTHER EAST WITH THEIR TRACKS OF A SURFACE

LOW PRESSURE SUNDAY NIGHT INTO MONDAY. BOTH MODELS NOW TAKE THIS

LOW PRESSURE EITHER OVER OR JUST SOUTHEAST OF THE BENCHMARK OF

40N/70W. SUCH A TRACK WOULD STILL LEAVE PORTIONS OF EASTERN MA AND

RI VULNERABLE TO SIGNIFICANT PRECIPITATION. THIS WILL REQUIRE

FURTHER ANALYSIS AS THE THERMAL GRADIENT IS VERY TIGHT...WHICH

WILL LIKELY MEAN SOME PRECIPITATION TYPE ISSUES WILL BE A

SIGNIFICANT FACTOR.

OF NOTE...HPC FORECASTERS INFORMED US THAT THERE WERE MAJOR

INITIALIZATION PROBLEMS INGESTED INTO BOTH THE NAM AND GFS MODELS

TODAY. PLEASE SEE THE MODEL DIAGNOSTIC DISCUSSION ISSUED AT 143 PM

FOR DETAILS. IT IS MORE THAN LIKELY THAT THIS CAUSED SOLUTION

ERRORS...NAMELY ON THE STRENGTH AND ESPECIALLY THE TRACK OF LOW PRES

WORKING UP THE EASTERN SEABOARD EARLY NEXT WEEK. AS NOTED EARLIER...

THE ONE THING SEEN THROUGH THE LAST SEVERAL DAYS IS THE LACK OF

RUN-TO-RUN CONSISTENCY BETWEEN INDIVIDUAL MODELS ESPECIALLY THE NAM

AND GFS.

You know, I have been hearing the phrase "lack of run-to-run continuity" for yeard, and although consistency is important, it strikes me as rare that even the most modern models are even capable of being consistent.

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