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Next week's major storm and beyond


OKpowdah

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Probably a dumb question, but is there such thing as being too far north in a gradient pattern to where storms start becoming suppressed ? Or is it, "if your above the battleground you'll be fine"

You can always be too far north. If it is something with a stalled front or mean stormtrack off the Virginia Capes, then that wouldn't be good for NNE. However, I'm not really worried about that right now. Lets just get this within reach.

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I don't think we're seeing a major pattern change to cold and snowy. I think we're seeing a change away from torch to somewhat above as we are on the wrong side of the gradient in SNE most of the time. I think after a paticularly robust cold push we'll start to warm again after the 20th-ish. Just my guess.

Well the fear is the wrong side of the gradient, and we easily may have a messy storm, but I'm not ready to go that pessimistic here at the moment. I also wouldn't say cold and snowy at the moment...just that we'll have some chances. I don't think you can say more this far out. Lets see this in a week. So far, the models are agreeing which is a good sign. Also, even in patterns that went colder and snowier...we always had inside runners so that wouldn't be all that horrible. It happens.

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I don't think we're seeing a major pattern change to cold and snowy. I think we're seeing a change away from torch to somewhat above as we are on the wrong side of the gradient in SNE most of the time. I think after a paticularly robust cold push we'll start to warm again after the 20th-ish. Just my guess.

I'm simply shocked that you of all people are calling for another torch. Will wonders never cease?

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Well as long as the coop has been the same for the past 30 years, its useful to compare to climo...i.e they use the same measuring techniques. Mt. Washington is the same way...they "average" 260 inches of snow per year, but if there was a way to collect it accurately, then it would probably be like 400+" per year...but since there isn't a way to do it and it all blows into Tuckerman's, we only have what is recorded.

It looks like the average to date is around 88" for Mt. Mansfield coop...and they are around half that on the listed values.

Thank you, I have been saying that for years about Mount Washington. I am not convinced the greens get more snow.

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Drink to the pattern change. If it fails you won't know the difference....

I ate a creme horn instead. Yum

I wish it would be a sudden change, one that blows in on the vanguard of a deep ,vicious, brutal 8 week stretch that makes people forget the words "torch", "Alaskan vortex" ,"SSW", and "transient"

Alas, it will be slow, but hopefully not muted

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BY THE WEDNESDAY NIGHT TO THURSDAY TIME FRAME OUR ATTENTION TURNS TO

WHAT MAY BECOME A SIGNIFICANT SYNOPTIC STORM. MEDIUM RANGE GUIDANCE

HAS BEEN ADVERTISING AN ACTIVE PATTERN DURING THIS TIME FRAME FOR

SEVERAL DAYS. THE LATEST 12Z GFS AND ECMWF ARE VERY SIMILAR AND

TRACK A STRONG SOUTHERN STREAM CLOSED LOW FROM THE LOWER MISSISSIPPI

VALLEY TUESDAY NIGHT TO THE MID ATLANTIC WEDNESDAY NIGHT. MEANWHILE

BOTH HAVE A SEPARATE NORTHERN STREAM TROUGH DIGGING INTO THE

NORTHERN PLAINS...AND BOTH KEEP THESE SYSTEMS OUT OF PHASE. SEVERAL

OF THE 12Z GEFS ENSEMBLE MEMBERS AND A FEW PAST OPERATIONAL RUNS

HAVE PHASED THESE TWO SYSTEMS...WITH A STRONG GREAT LAKES CUTTER

MOVING UP TO OUR WEST.

AT THIS TIME FRAME MODELS WILL CONTINUE TO FLIP AROUND ON A POSSIBLE

PHASED SOLUTION GIVEN THAT JUST A SMALL CHANGE IN TIMING...PLACEMENT

OR AMPLITUDE OF EITHER WAVE WILL PRODUCE BIGGER AND BIGGER CHANGES

MOVING FORWARD IN TIME. IN EITHER CASE...PHASED OR UNPHASED...THE

MAJOR WARM-UP THROUGH THE FIRST PART OF THE WEEK WILL ENSURE A

MAINLY RAIN EVENT WITH WELL ABOVE AVERAGE TEMPERATURES CONTINUING

THROUGH THURSDAY. THERE IS SOME POTENTIAL FOR MODERATE TO HEAVY RAIN

GIVEN THE FAR SOUTHERN TRACK OF THE SOUTHERN STREAM SYSTEM ALLOWING

IT TO CAPTURE A PLUME OF DEEPER MOISTURE...BUT THE FAST MOVEMENT

SHOULD PREVENT ANY SIGNIFICANT FLOODING ISSUES.

LOOKING A LITTLE FURTHER AHEAD...MEDIUM RANGE GUIDANCE DOES SHOW

ANOTHER BATCH OF COLD AIR ARRIVING AT THE END OF NEXT WEEK INTO NEXT

WEEKEND WITH TEMPERATURES DROPPING BACK TO AT OR EVEN BELOW AVERAGE.

MOST OF THE SYNOPTIC PRECIP WILL BE RAIN...WITH PERHAPS JUST A

LITTLE LIGHT SNOW AT THE TAIL END.

IT APPEARS THAT THIS NEXT PUSH OF COLD AIR WILL BE ANOTHER TRANSIENT

ONE...WITH NO FUNDAMENTAL PATTERN CHANGE TAKING PLACE. LONG TERM

ENSEMBLE GUIDANCE INDICATES THE TROUGH QUICKLY LIFTING OUT AFTER A

FEW DAYS AND ALLOWING ZONAL FLOW AND PACIFIC AIR TO FLOOD EAST. THE

AO/NAO WILL BE TRENDING LOWER OVER THE NEXT 1-2 WEEKS...BUT STILL

NOT NEGATIVE BY ANY MEANS AND LITTLE EVIDENCE OF ANY LASTING HIGH

LATITUDE BLOCKING IS NOTED ON THE GFS OR ECMWF OVER THE NEXT 10

DAYS. IT DOES APPEAR A PATTERN CHANGE MAY HAPPEN DOWN THE ROAD THAT

MIGHT FAVOR -NAO/-AO FOLLOWING A SUDDEN STRATOSPHERIC WARMING EVENT

WHICH IS JUST ENDING...BUT THAT PATTERN CHANGE IS PROBABLY STILL 2-3

WEEKS AWAY. UNTIL THEN...ABOVE NORMAL TEMPERATURES ON AVERAGE WILL

LIKELY CONTINUE.

Thoughts from BUF...don't really agree with the end there because it neglects significant changes to the EPO...but always good to get a different perspective.

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LOL at 06z GFS.

If its regarding the event at 78-96 hours the Canadian did show the same thing on its run at 00z. The 00Z GFS ensembles though had only 1 member supporting that idea. The Canadian had only 4 of 23 ensembles showing anything near the Op run, nevertheless there is a chance I think of something in that period though it would likely be more for NJ/NYC/CT than MA.

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This is a prime example as to why the GFS should be discarded and not used..It's advertsing the chance of s snow/.ice storm for SNE next week when every other piece of guidance give a driving , warm rainstorm to the Canadian border. Yet people still use it to make forecasts

It's not advertising anything other than a rainstorm.

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This is a prime example as to why the GFS should be discarded and not used..It's advertsing the chance of s snow/.ice storm for SNE next week when every other piece of guidance give a driving , warm rainstorm to the Canadian border. Yet people still use it to make forecasts

Kevin, this posts implies that the GFS is advertising a snow/ice event for the big low next week. Not true. I know in your response you seemed to imply the deal around 90 hours....but the above quoted post implies otherwise.

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Flurries at 90 hours on the vaunted 6z?.....lol...

The 12Z NAM is gonna come in with a disabled version of 12/5/02, book it.....the reason I say that is because the NAM loves overamplifying things late on its runs, and its 00Z run appeared headed in that direction somewhat at 84 hours.

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