Jump to content
  • Member Statistics

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

Post-Super Bowl Storm chance discussion


rossi

Recommended Posts

  • Replies 1.8k
  • Created
  • Last Reply

Meteorologically speaking, I honestly think the GGEM makes the most sense.

Precipitation-wise, I agree. I'll admit I'm a tad worried about the north trend since while we do have confluence, the shortwave keeps trending more amped, generally speaking, so it can gain some latitude before hitting the confluence.

Regardless though a lot of us would be in for several inches + before a changeover anyway in that scenario.

Link to comment
Share on other sites

Overunning to miller b now

I'm fairly certain that's always been the case, it's not particularly clear on some of the models because the transfer happens quickly and I think a lot of people assume it was the origional surface low. The Euro is probably the only model left that trully had one surface low.

Link to comment
Share on other sites

Good example was last Valentines Day.  It never got above freezing here and we had ZR while the rest of the region had plain rain.  Admittedly that was flukeish and I never did figure out why, but I recall at the time the denial that it could even be possible from some mainlander posters in OC.

Latitude and those hills protect you from light S winds .

NE winds come off New England so CAD sometimes sinks to the N shore in marginal sits .

I've seen 6 inches fall in laurel hollow while 2 fell in long beach.

Link to comment
Share on other sites

There is an incredible amount of thermal packing with this setup, so with the high to the north and the storm pushing in, you're going to get even more mid-level frontogenesis than normal. Frontogenesis could honestly be through the roof, so I'm not surprised the GGEM is spitting out such high precip amounts.

 

This reminds me of a great event back in the 90's or early 2000's that came in on a Sunday night and exceeded expectations.

I just can't remember the exact date, but the NWS had to upgrade their amounts once the storm got underway.

That one was a touch warmer with very heavy wet snow that snapped a bunch of branches across the region.

Link to comment
Share on other sites

Latitude and those hills protect you from light S winds .

NE winds come off New England so CAD sometimes sinks to the N shore in marginal sits .

I've seen 6 inches fall in laurel hollow while 2 fell in long beach.

 

Definitely, but last February was a true oddity.  It was raining in the southern half of Connecticut, it was raining in Orange County, NNJ, etc.  Only a 15 or 20 mile stretch along the north shore never got above freezing.  I am not claiming that is common; it was bizarre.

 

Almost as bizarre as arguing about thermal profiles at hour 75 on the NAM   But if the take away is that looking at soundings is a good thing, then I have made a small difference. ;)  Some of the pretty colored maps make little sense (like wxbell snow maps).

Link to comment
Share on other sites

This reminds me of a great event back in the 90's or early 2000's that came in on a Sunday night and exceeded expectations.

I just can't remember the exact date, but the NWS had to upgrade their amounts once the storm got underway.

That one was a touch warmer with very heavy wet snow that snapped a bunch of branches across the region.

 

That sounds like 3/14/99, that was a Sunday night but that was a much different setup than this, more or less a Miller A that made its own cold air

Link to comment
Share on other sites

Good example was last Valentines Day.  It never got above freezing here and we had ZR while the rest of the region had plain rain.  Admittedly that was flukeish and I never did figure out why, but I recall at the time the denial that it could even be possible from some mainlander posters in OC.

Interesting.  I don't think it was Valentines Day 2014 though, do you recall when it was?

 

Edit:  maybe a week later on the 21st?  I recorded rain that day up here.

Link to comment
Share on other sites

There is an incredible amount of thermal packing with this setup, so with the high to the north and the storm pushing in, you're going to get even more mid-level frontogenesis than normal. Frontogenesis could honestly be through the roof, so I'm not surprised the GGEM is spitting out such high precip amounts.

Thats why I am re thinking only 10 to 1. The forcing on the front end should create enough upward motion combined with cold 850s for the first half of the storm that ratios will turn out well.

As the mid levels erode , you get back to 10 to 1

Link to comment
Share on other sites

There is an incredible amount of thermal packing with this setup, so with the high to the north and the storm pushing in, you're going to get even more mid-level frontogenesis than normal. Frontogenesis could honestly be through the roof, so I'm not surprised the GGEM is spitting out such high precip amounts.

Yes. Exactly.

Edit: This is also creates heart breaking cut-offs.

Link to comment
Share on other sites

Archived

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

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...