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Feb 24th threat part deux


Typhoon Tip

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The previous 6 hour total is likely even better.

 

Yeah the amazing part is that is 6 hour qpf...not qpf for 12 hours between 48-60. It would probably give over 2" of qpf, lol. I don't believe the solution, but it lends more support to the idea that taking the middle ground is probably the way to go here. GFS looks kind of ridiculous actually.

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What a tough forecast for BOS and prob even tougher for SE MA...I think back around ORH, the forecast won't change a lot, unless we see that southern vortmax speed up enough to catch the sfc wave...then we could get 12"+ totals, but right now I see this as a medium warning 5-9/6-10" type event.

 

For the coast and SE MA, its tough...could be 2-4" of slop, or they could rip off 8" in 8 hours to end it if we see that commahead manage to wrap up just in time.

I think your totals are a little too high.  All guidance has been steadily moving away from a high QPF event.  GEFS and SREF should continue to come down.  And the typical cut the NAM in half rule should apply.  Plus there are mixing issues to consider as well as average or worse ratios.  I don't think I would go above 6" right now anywhere... model guidance just does not support it.  Of course the storm could overperform and there are always isolated higher totals, but I think in this case it would be prudent to start conservative.

 

But I'm still HOPING for the 0z NAM to verify.

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Can someone post the qPF numbers for last nights Euro? TIA

 

About 0.75" for ORH...almost an inch for BOS...there was a hole of less than 0.75" from near ORH back SW to HFD and CT river valley down SE to GON/WST.

Ensembles were actually a bit more bullish than the OP run.

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I think your totals are a little too high.  All guidance has been steadily moving away from a high QPF event.  GEFS and SREF should continue to come down.  And the typical cut the NAM in half rule should apply.  Plus there are mixing issues to consider as well as average or worse ratios.  I don't think I would go above 6" right now anywhere... model guidance just does not support it.  Of course the storm could overperform and there are always isolated higher totals, but I think in this case it would be prudent to start conservative.

 

But I'm still HOPING for the 0z NAM to verify.

 

I'm not worried about mixing in the ORH hills. As long as we get over a half inch of QPF, we will crack 6" IMHO...perhaps we will see the model guidance trend under that number, but until we do, I feel fine with those amounts here. Lower down may have problems if we are slow-burning our way to achieve qpf numbers.

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One of the last 2 GFS remaining holdouts has reappeared . To be far though he has been at Mt Wash all week and missed most of the disco on that

you do realize...the euro gave you about 2...maybe 3" of snow at the front end...then many hours of non-snow (probably rain) then maybe 1" of snow on the backside, right? 

 

it's not as though it gave you 8" of snow. :lol: 

 

and. no one here said the GFS was right. stop trolling. 

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