Jump to content
  • Member Statistics

    17,606
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Feb 17 Miller A Threat


Zelocita Weather

Recommended Posts

  • Replies 1.8k
  • Created
  • Last Reply

21z SREF Plumes (Total Snow)

 

TTN - 9.31 in

 

PHI - 9.63 in

BLM - 8.83 in

 

EWR -8.77 in

LGA-8.64 in

 

JFK-8.52 in

 

ISP-8.78 in

 

HPN - 8.42 in

 

BDR - 7.63 in

 

Best to look at QPF and not snow. For example, those plumes give LGA 8.14" of snow on .43" QPF, which is roughly a 19:1 ratio. I don't think people should be banking on ratios quite that high, maybe 12 to 15:1, which translates to about 5-7".

Link to comment
Share on other sites

I didn't see this posted...

 

FURTHER NORTH...PRECIPITATION TYPE ISSUES BECOME LESS OF AN
ISSUE...AS A COLD COLUMN REMAINS IN PLACE. THE BEST MID LEVEL LIFT
PLACES MOISTURE INTO THE DENDRITIC GROWTH ZONE STRETCHING FROM
WESTERN NC ACROSS MUCH OF VA/MD/DC INTO SOUTHERN NJ AND PORTIONS
OF NYC AND LONG ISLAND
. GIVEN THE COLD AIR IN PLACE AND DENDRITIC
GROWTH POTENTIAL...SNOW TO LIQUID RATIOS COULD EXCEED 15 TO
1
...ESPECIALLY NORTH OF THE MASON DIXON LINE. THE TRACK OF THE
BEST MID LEVEL LIFT NORTHWEST OF THE SURFACE WAVE SUPPORTS A LARGE
AREA OF 4 TO 8 INCHES OF SNOWFALL ACROSS MUCH OF VA... SOUTHERN WV

...EASTERN MD...SOUTHEAST PA...SOUTHERN NJ ACROSS MUCH OF LI.

THERE COULD BE A SMALL AREA OF NEAR 12 INCHES OF SNOWFALL

SOMEWHERE ON THIS AXIS...AS SUGGESTED BY MEMBERS OF THE LATEST
ECMWF ENSEMBLE OUTPUT. HOWEVER...GIVEN THE SPEED OF THE MID LEVEL
SYSTEM...THIS APPEARS TO BE A LOW PROBABILITY EVENT AT THIS TIME.

 

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

 

http://www.hpc.ncep.noaa.gov/wwd/day2_psnow_gt_12.gif

Link to comment
Share on other sites

Best to look at QPF and not snow. For example, those plumes give LGA 8.14" of snow on .43" QPF, which is roughly a 19:1 ratio. I don't think people should be banking on ratios quite that high, maybe 12 to 15:1, which translates to about 5-7".

 

I was just about to post the same. For Poughkeepsie, it has 6.59" of snow on 0.24" of QPF for 27:1 ratios. I'm not holding my breath on that one.

Link to comment
Share on other sites

Nice 11/11/87 slash 1/26/87 by the SREFs...literally hit DC/Boston but try to avoid us.

I was thinking about 1/26/87 because 1987 wasn't a bad analog for this year...NYC picked up 4" with much more to the south...today was 4 degrees in 1987 and a southern snowstorm hit the area later in the month...NYC got 4-5" while southern N.J. got over 10"...If we see moisture from the Gulf get involved we could get 6" plus...

Link to comment
Share on other sites

Best to look at QPF and not snow. For example, those plumes give LGA 8.14" of snow on .43" QPF, which is roughly a 19:1 ratio. I don't think people should be banking on ratios quite that high, maybe 12 to 15:1, which translates to about 5-7".

 

Fair point.  My one not even really a counterpoint might be that the models might underdo the QPF.  They often do with these southern/Miller A types.  Some areas lose out to confluence, but these things are often quite moist.

 

I typically shave 1-1.5 inches off the mean plume myself anyway!

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...