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1/15-1/16 Coastal Storm


Zelocita Weather

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18z gfs is about 2-4 after starting out a bit warm..

It's very similar to 12z aloft and at the surface.  A hair less wrapped up and thus cooler and further east.  Moisture is initially a little limited, but the upper levels look promising and suggest a good slp track for I-95 and west with deepening potential.  Legit threat to track.

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Couple of things to watch with this event, most importantly...the energy in BC/AB at 110 hours plus...if that energy is too strong or moving too fast it may force the trof offshore earlier...but the good news is the ridge out there overall behind it is amplifying and building which may negate the effect a bit...second have to watch to see if a low tries to form inland first and then the coastal...the 18Z GFS seems to try and hint at that idea, that could kill the boundary layer.

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This right now is a MIller B BUT the GFS is famous for missing any southern stream energy as was witnessed in the storm last week till the last couple of days before it finally picked it up but the track the pattern the indicies are all favorable this has the potential to be a SECS or greater

 

http://www.tropicaltidbits.com/analysis/models/gfs/2014011018/gfs_mslp_pcpn_frzn_us.html

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This right now is a MIller B BUT the GFS is famous for missing any southern stream energy as was witnessed in the storm last week till the last couple of days before it finally picked it up but the track the pattern the indicies are all favorable this has the potential to be a SECS or greater

 

http://www.tropicaltidbits.com/analysis/models/gfs/2014011018/gfs_mslp_pcpn_frzn_us.html

 

 

With a good block this would have had major potential because that previously mentioned disturbance in BC/AB I talked about may have had time to catch up to the frontrunning one and really produce a bomb, but in this setup they stay way apart and if anything it could act as a kicker.

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You mean, where it has snow in the forecast for wednesday? lol

what are you talking about ???? check this out :

 

NJZ010-110945-  

SOMERSET-  

INCLUDING THE CITIES OF...SOMERVILLE  

717 PM EST FRI JAN 10 2014  

   

..FREEZING RAIN ADVISORY IN EFFECT UNTIL 4 AM EST SATURDAY  

 

...FLOOD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH LATE  

SATURDAY NIGHT...  

   

TONIGHT  

RAIN LIKELY WITH A CHANCE OF FREEZING RAIN THIS  

EVENING...THEN RAIN AFTER MIDNIGHT. AREAS OF FOG. ICE  

ACCUMULATION AROUND A TRACE. LOWS IN THE LOWER 30S. TEMPERATURES  

RISING AFTER MIDNIGHT. LIGHT AND VARIABLE WINDS...BECOMING  

SOUTHEAST 5 TO 10 MPH AFTER MIDNIGHT. CHANCE OF PRECIPITATION  

80 PERCENT.    

SATURDAY  

PERIODS OF RAIN. AREAS OF FOG IN THE MORNING. RAIN  

MAY BE HEAVY AT TIMES IN THE AFTERNOON. BREEZY AND MUCH WARMER  

WITH HIGHS IN THE LOWER 60S. SOUTH WINDS 15 TO 20 MPH. CHANCE OF  

RAIN NEAR 100 PERCENT.    

SATURDAY NIGHT...RAIN  

MAINLY IN THE EVENING. LOWS IN THE UPPER  

30S. SOUTHWEST WINDS 10 TO 15 MPH...BECOMING NORTHWEST AFTER  

MIDNIGHT. CHANCE OF RAIN NEAR 100 PERCENT.    

SUNDAY  

MOSTLY SUNNY AND BREEZY. HIGHS IN THE UPPER 40S. WEST  

WINDS 15 TO 20 MPH WITH GUSTS UP TO 30 MPH.    

SUNDAY NIGHT  

MOSTLY CLEAR. LOWS IN THE MID 20S. SOUTHWEST  

WINDS 5 TO 10 MPH.    

MONDAY...SUNNY IN THE MORNING  

THEN BECOMING PARTLY SUNNY.  

HIGHS AROUND 50.    

MONDAY NIGHT  

MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN.  

LOWS IN THE UPPER 30S.    

TUESDAY  

RAIN LIKELY. HIGHS IN THE MID 50S. CHANCE OF RAIN  

60 PERCENT.    

TUESDAY NIGHT  

MOSTLY CLOUDY. RAIN LIKELY IN THE EVENING. LOWS  

AROUND 30. CHANCE OF RAIN 60 PERCENT.    

WEDNESDAY  

MOSTLY CLOUDY. HIGHS IN THE LOWER 40S.    

WEDNESDAY NIGHT...MOSTLY CLOUDY IN THE EVENING  

THEN BECOMING  

PARTLY CLOUDY. LOWS IN THE UPPER 20S.    

THURSDAY  

SUNNY. HIGHS AROUND 40.    

THURSDAY NIGHT...MOSTLY CLEAR IN THE EVENING  

THEN BECOMING  

PARTLY CLOUDY. LOWS IN THE UPPER 20S.    

FRIDAY  

PARTLY SUNNY. HIGHS IN THE LOWER 40S.  

 

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Good. We don't want it showing an outrageous solution this far out. 

 

The NOGAPS and GEM both have a big coastal system in the 96 hour range, both would be rain but both would have potential in their respective setups, it leads me to believe the GFS is again clueless, would not be surprised to see many of its ensemble members show a storm.

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The NOGAPS and GEM both have a big coastal system in the 96 hour range, both would be rain but both would have potential in their respective setups, it leads me to believe the GFS is again clueless, would not be surprised to see many of its ensemble members show a storm.

 

Interesting. I might be pulling a few all-nighters if the ECMWF stays on board. 

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The Euro ensembles and its control develop the low just south of Long Island. There is still a lot of variance here. The 6z GFS loses the storm.

So I would wait for at least 2 runs in a row that look similar with this before I get exited or sound any alarms.

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Looks like anyway you slice it near the coast its going to be rain. The cold air really isnt going to be that impressive. We're going to have endure these next couple days of model mayhem though thats for sure

you can't say that for sure yet - not even sure what track the second low later on 1/15 will take - the indicies forecasts are in favorable positions and water temps have lowered considerably 

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gfs_pr3_slp_t850_east_35.png

850` are Minus 6 , The surface looks to be in the lower 30`s , I cant get a clear surface temp pic off some the maps I am seeing .

Off soundings:

Surface starts off at 37 degrees. Then after .35" of precip has fallen, the surface is still 35 degrees and then after another .08" has fallen, the surface is 33 degrees.

Probably a rain to wet snow on the GFS.

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Off soundings:

Surface starts off at 37 degrees. Then after .35" of precip has fallen, the surface is still 35 degrees and then after another .08" has fallen, the surface is 33 degrees.

Probably a rain to wet snow on the GFS.

With enough dynamic cooling and lift and 850's under 0C we should be fine, also note the low pressure is just south of LI

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Off soundings:

Surface starts off at 37 degrees. Then after .35" of precip has fallen, the surface is still 35 degrees and then after another .08" has fallen, the surface is 33 degrees.

Probably a rain to wet snow on the GFS.

Will all come down to rates , if you can drop .75 in 6 - 9  hours on a NE wind  you will cool the column .

 If the QPF is on the lighter side then its hard to do

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