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February 13-14th Potential Winter Storm Threat Discussion


Zir0b

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Yep.  I got 10.5" in Metuchen, in the heart of northern Middlesex, and I suspect that the 8.9" report from Metuchen might be lower than it should be for two reasons: first, I'm not sure the person included the 0.5" we got in the morning, which melted with the rainfall after that, and second, if they truly measured at 9:15 am, they likely would have seen 0.5-0.75" of compaction relative to my 7:00 am measurement, which was taken before the sun came up and just an hour or so after the last flurries were over - I remeasured at 10 am and my snow depth had compacted by 0.75", so I could easily see a 9:15 am measurement being 0.5" low.  I'm also kind of a nut when I measure - I generally average out several measurements and I always take at least 10 measurements with my final measurement (possibly not needed for this storm, since drifiting was minimal, but sometimes it's important).  Also, if you look at the NWS snowfall map, just about all of Middlesex County is in the 8-12" swath, as were all the reports, so 6" is simply not credible.  Lastly, every report from Union County, 7+ miles north of me, was over 10" and same for Staten Island, which is 5+ miles east of me. 

 

 

Hey, no harm in being a snow measuring nut. Much better than people who stay partially inside, reach their one arm out the door, and stick the ruler in the nearest snow mound, while holding a cup of hot chocolate in the other hand.

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I seriously wish you would become a trained spotter, your report would be great for our area. His 6 makes no sense and is just another last minute attempt to poo poo the event. Was at haileys with my gf before going to Knicks game yesterday. She is from metuchen

 

 

I got 7 IMBY...10 miles from New Brunswick....other areas near me with about 6, some with 7 this was Somerset County, I do not think any reports over 8

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Hey, no harm in being a snow measuring nut. Much better than people who stay partially inside, reach their one arm out the door, and stick the ruler in the nearest snow mound, while holding a cup of hot chocolate in the other hand.

When I came home from a party late Friday night, I could've sworn we had 3 feet out there. Must've melted down to 13" or so by morning.

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Yep.  I got 10.5" in Metuchen, in the heart of northern Middlesex, and I suspect that the 8.9" report from Metuchen might be lower than it should be for two reasons: first, I'm not sure the person included the 0.5" we got in the morning, which melted with the rainfall after that, and second, if they truly measured at 9:15 am, they likely would have seen 0.5-0.75" of compaction relative to my 7:00 am measurement, which was taken before the sun came up and just an hour or so after the last flurries were over - I remeasured at 10 am and my snow depth had compacted by 0.75", so I could easily see a 9:15 am measurement being 0.5" low.  I'm also kind of a nut when I measure - I generally average out several measurements and I always take at least 10 measurements with my final measurement (possibly not needed for this storm, since drifiting was minimal, but sometimes it's important).  Also, if you look at the NWS snowfall map, just about all of Middlesex County is in the 8-12" swath, as were all the reports, so 6" is simply not credible.  Lastly, every report from Union County, 7+ miles north of me, was over 10" and same for Staten Island, which is 5+ miles east of me. 

Great post.  6'' is definitely too low.  It's very easy to undermeasure if you don't measure before the sun comes up and if you don't take into account what melts from rain.  8.2'' was the official measurement in New Brunswick which matches up very well with surrounding areas.  And glad to see I'm not the only one who's a nut when it comes to measuring :P (not that there's anything wrong with that). 

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...MIDDLESEX COUNTY...
   CHEESEQUAKE            9.8   245 AM  2/09  PUBLIC
   METUCHEN               8.9   915 AM  2/09  TRAINED SPOTTER
   SOUTH PLAINFIELD       8.8   948 AM  2/09  PUBLIC
   FORDS                  8.5  1209 PM  2/09  TRAINED SPOTTER
   PISCATAWAY             8.5   300 AM  2/09  PUBLIC
   NEW BRUNSWICK          8.2   800 AM  2/09  CO-OP OBSERVER
   EAST BRUNSWICK         7.4   635 AM  2/09  PUBLIC
   KINGSTON               6.0   930 AM  2/09  TRAINED SPOTTER
   MONROE TWP             6.0   930 AM  2/09  TRAINED SPOTTER

 

BASKING RIDGE          8.5   341 AM  2/09  TRAINED SPOTTER
   BOUND BROOK            8.2   810 AM  2/09  TRAINED SPOTTER
   GREENBROOK TWP         8.0   724 AM  2/09  TRAINED SPOTTER
   HILLSBOROUGH           7.9   832 AM  2/09  TRAINED SPOTTER
   FRANKLIN TWP           7.5   230 AM  2/09  COCORAHS
   SOMERVILLE             7.0   545 AM  2/09  TRAINED SPOTTER
   ROCKY HILL             6.0   145 AM  2/09  TRAINED SPOTTER
   POTTERSVILLE           5.5   700 AM  2/09  CO-OP OBSERVER
   BRANCHBURG             4.5   730 AM  2/09  TRAINED SPOTTER

...MERCER COUNTY...
   LAWRENCEVILLE          7.2   933 AM  2/09  PUBLIC
   1 ESE MERCERVILLE-HA   7.0   931 AM  2/09  TRAINED SPOTTER
   PRINCETON              7.0   610 AM  2/09  PUBLIC
   HOPEWELL TWP           6.5   855 AM  2/09  PUBLIC
   HOPEWELL               6.5   929 AM  2/09  TRAINED SPOTTER
   EWING                  6.0   933 AM  2/09  TRAINED SPOTTER
   PENNINGTON             5.8   542 AM  2/09  TRAINED SPOTTER
   HAMILTON TWP           5.5   929 AM  2/09  TRAINED SPOTTER
   HIGHTSTOWN             5.5   700 AM  2/09  CO-OP OBSERVER
   EWING TWP              5.0   648 AM  2/09  PUBLIC
   WHITE HORSE            5.

 

 

HUNTERDON COUNTY...
   FLEMINGTON             7.2   915 AM  2/09  TRAINED SPOTTER
   KINGWOOD TWP           7.0   859 PM  2/09  TRAINED SPOTTER
   WERTSVILLE             6.8   730 AM  2/09  CO-OP OBSERVER
   READINGTON             6.3   518 AM  2/09  TRAINED SPOTTER
   RINGOES                5.9   800 AM  2/09  TRAINED SPOTTER
   HIGH BRIDGE            5.5   509 AM  2/09  PUBLIC

 

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I got 7 IMBY...10 miles from New Brunswick....other areas near me with about 6, some with 7 this was Somerset County, I do not think any reports over 8

We are talking about northern middlesex county which was 8-10 respectively. Se middlesex county and your area was in the relative dry area. Those counties you posted are on the western side of the state. Union in nj which is above northern middlesex ended up with 10-12

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Everything with the northern stream flow (over the Great Lakes and Southeast Canada) is a bit farther south this run on the NAM through 21 hours. Pressing on the flow a little bit more over the East Coast...so we might see another tick southeast at least judging from the early panels.

Ya I noticed that. 18z had some changes too that would lead you to believe the track would be further south yet the eventual track was similar, precip was cut down. I could see a further south track for 00z with similar precip to 18z

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When I came home from a party late Friday night, I could've sworn we had 3 feet out there. Must've melted down to 13" or so by morning.

 

 

 

Makes sense, Mt. Earthlight has extremely high ratios due to the Mt. Washington like temperatures. Even sober the compaction rates are a sight to behold.

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I just want to throw this out there so it's on the table. I don't want to be a Debbie Downer, but 21z SREF's show that NYC proper and east may have some mixing issues. There appears to be another warm tongue that we might have to fight. If this thing hits too early...aka before sunset...this could be just one of those 4-6 hour events in which half the precip is wasted on mix/non-accumlating snow. Given current airmass, I'd go on the lower side for much of NYC and east.

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I don't think this run is bad. The vort over the northeast is weaker than the last run and will suppress the heights less in the hours ahead. Thus, I think the heights will recover. Also, the northern stream itself is a bit further south and digging a tad more...making for a flatter look initially, but once that vort in the northeast moves out, may help for the heights to recover downstream as well. 

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I don't think "suppressed" is the right word. Flatter or less amplified would be more apt. That being said, there are so many northern vorts that can have an effect still...really too early to make a final judgement.

yes, but for the purposes of this conversation is 6 of these, half a dozen of those.

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