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Post-Super Bowl Storm chance discussion


rossi

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The polar jet tries to drop in at the very end which throws back some moisture to the Delmarva and SNJ but it's very flat. Terrible trends today on the GFS and the Euro. If this continues we'll have mostly sunny skies.

 

oh boy... let's take a step back... 4+ days out could be the range where storms get shunted to the south then come back north under 72 hrs... well see

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Damn right it is... I was trying to be funny... sorry you didn't catch it

Perhaps if I was sitting on the 24" snowpack that I was promised I might have a bigger sense of humor.

 

The biggest differences appear to be with how the clipper is handled and how it impacts the upstream flow of the polar jet.

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That's pure wishcasting. The setup at H5 on the 12z GFS and Euro are not supportive of a signficant storm for the area.

Too early to say that. The shortwave responsible for this possible system won't even be in a well-sampled area for another few days 

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Perhaps if I was sitting on the 24" snowpack that I was promised I might have a bigger sense of humor.

 

The biggest differences appear to be with how the clipper is handled and how it impacts the upstream flow of the polar jet.

 

Yea i hear ya... I faired OK with 7 inches about but far from the big call! Oh well it happens!!

 

Yes, a stronger drop in the PV will kill our chances of anything....

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Perhaps if I was sitting on the 24" snowpack that I was promised I might have a bigger sense of humor.

The biggest differences appear to be with how the clipper is handled and how it impacts the upstream flow of the polar jet.

We need to resolve the clipper system first. Was it sampled yet? As in, has it hit the west coast yet (I'm at work, so I know I'm being lazy but Ty).
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The clipper system has trended stronger, closing off at H5 and that screws up the entire pattern. We actually need the northern stream to be more progressive here.

Its not the clipper , the clipper actually helps create the block . The Euro holds the energy in the 4 corners bet 44 - 72 before ejecting it.

 

If it ejects like it should it will get caught by the N branch and 12 hours earlier keeps the ridge axis in a good spot 

If it is Euro bias it should come out faster as it corrects .

if its right it gets hung up and the whole thing is flat ,. We will see 

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Not that it matters, but this isn't true.

 

A 3 digit interstate *beginning* with an odd number is a spur into/out of a major metro area, e.g. 195. A 3 digit interstate beginning with an even number is a loop around a major metro area, e.g. 287. The spurs and loops have no correlation between direction and nomenclature, as the nomenclature is derived from the parent road.

 

 

Its important for weather.  If you connect 287 in Westchester, going west across the tap, then it connects to 287 again going south into NJ.  This is a great line to describe "North and West."  It makes a nice arc. I live just north of 287 in westchester, and many times that line seems to work out for a rain/mix to snow boundary. 

 

 

This whole convo should be taking place in banter

 

Don't take it to banter - take it to the thread on anal retentive discussions of highway markers for meteorological reference, i.e., the N and W of 287 5-page thread I started awhile back...

 

http://www.americanwx.com/bb/index.php/topic/15998-pet-peeve-north-and-west-of-287/

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more positive news for Monday's system

speculation on slower movement holds up

 

http://www.hpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=pmdepd

 

...GUIDANCE/UNCERTAINTY EVALUATION AND PREFERENCES...

THERE CONTINUE TO BE VARIOUS SOURCES OF UNCERTAINTY FOR THE SYSTEM
EXPECTED TO AFFECT THE CNTRL-ERN STATES FROM THE WEEKEND INTO THE
START OF NEXT WEEK. SUPPORTING ENERGY AMPLIFYING INTO THE PLAINS
DURING THE WEEKEND ORIGINATES FROM A COMBINATION OF FLAT FLOW
HEADING INTO BC AND SHEARED ENERGY OVER ALASKA IN THE SHORT RANGE.
THESE IMPULSES DO NOT REACH WRN CANADA UNTIL LATE FRI SO IT MAY
TAKE UNTIL AT LEAST THEN TO GET A REASONABLE ANALYSIS OF THIS
ENERGY. BEYOND THIS ISSUE IS THE QUESTION OF NRN STREAM TROUGH
AMPLITUDE OVER THE CONUS AND HOW MUCH INTERACTION THERE IS WITH
THE TROUGH OVER THE SWRN CONUS/NRN MEXICO. GREATER NRN STREAM
AMPLITUDE/MORE INTERACTION AS PER 00Z GFS/CMC RUNS LEAD TO A
SLOWER/NWWD SFC SYSTEM IN CONTRAST TO THE FLAT NRN STREAM
SHRTWV/WEAK AND FAST SFC WAVE OF THE 00Z UKMET. THE UKMET/CMC
HAVE ESSENTIALLY SWITCHED PLACES RELATIVE TO THE SOLN ENVELOPE
COMPARED TO 24 HRS AGO. MEANWHILE THE FULL ARRAY OF ENSEMBLE SFC
LOWS BY LATE SUN ONWARD IS QUITE BROAD WITH LITTLE CLUSTERING
ASIDE FROM SUGGESTING THE BEST PROBABILITY WOULD BE FOR THE SYSTEM
TO BE JUST OFF THE NERN COAST BY 00Z TUE. ON THE POSITIVE SIDE...
TAKEN AS A WHOLE THE PAST 24 HRS OR SO OF GUIDANCE HAS STABILIZED
ON A SLOWER/STRONGER EVOLUTION THAN SEEN IN EARLIER CONSENSUS.
FOR THIS UPDATE ULTIMATELY PREFER TO EMPHASIZE A BLEND OF THE 06Z
GFS/00Z ECMWF/00Z GEFS MEAN WITH LESS WEIGHTING ON THE FLATTER 00Z
ECMWF MEAN. THIS SOLN YIELDS A GOOD INTERMEDIATE SFC TRACK WHICH
COMPARES WELL WITH LAGGED AVG FCSTS INCORPORATING RECENT GFS/ECMWF
RUNS...
FROM THE OH VLY 00Z MON TO THE DELMARVA/SERN PA 12Z MON TO
JUST OFF THE NRN NEW ENGLAND COAST 00Z TUE. THE FAVORED BLEND
REPRESENTS CONSENSUS WELL OVER THE WRN STATES WHERE RIDGING ALOFT
WILL FLATTEN AS WEAK ENERGY ALOFT COMES INLAND.

 

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Weather forcasters are surprisingly bullish for this event already.. Even weatherbug app stated moderate accumulation for sunday night then again Monday.. Very strange especially after such a big bust

 

Yea wxunderground.com has 5-8 Sunday and 1-3 Monday for me... seems a little silly at this point to be throwing out numbers and it's only Wednesday.

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