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Feb 24th threat part deux


Typhoon Tip

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If you looked at the Euro qpf map and the GYX snowfall map, Its just about identical .75" or so

 

At this point you have to ride it. What a disaster of a 12z suite. :axe:

 

I wake up to find the NAM has cut QPF from 00z by a factor of 5?! GFS nearly whiffs. I'm not usually one to rail on NWP, but the consistency is poor at best, and inside of 36 hours. Luckily I based my QPF forecast around the Euro, and it hasn't pulled the rug out from under NNE yet. I am regretting adding that last tier of counties/zones northward in the watch though. Looks much less certain than just 12 hours ago.

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At this point you have to ride it. What a disaster of a 12z suite. :axe:

 

I wake up to find the NAM has cut QPF from 00z by a factor of 5?! GFS nearly whiffs. I'm not usually one to rail on NWP, but the consistency is poor at best, and inside of 36 hours. Luckily I based my QPF forecast around the Euro, and it hasn't pulled the rug out from under NNE yet. I am regretting adding that last tier of counties/zones northward in the watch though. Looks much less certain than just 12 hours ago.

 

12z was not very good, It was good to see for now that the 12z Euro, More or less held serve for most of our region, I would not ride anything else at this point, Either its right or it will have been consistently wrong, But i doubt that, At least with the watch, You can downgrade to advisory or less from there instead of dropping a warning

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At this point you have to ride it. What a disaster of a 12z suite. :axe:

 

I wake up to find the NAM has cut QPF from 00z by a factor of 5?! GFS nearly whiffs. I'm not usually one to rail on NWP, but the consistency is poor at best, and inside of 36 hours. Luckily I based my QPF forecast around the Euro, and it hasn't pulled the rug out from under NNE yet. I am regretting adding that last tier of counties/zones northward in the watch though. Looks much less certain than just 12 hours ago.

New SREF plumes are actually more impressive at several of the far interior forecast points thanks to that nearly stationary trough. I think you're good.

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Don't shoot me for posting this but the RPM shows an eastern Mass snow bomb now.

 

Seriously don't know whats happened to the RPM this year. Previous years its been pretty good. Suddenly even within 24hrs its terrible and flip/flops.

 

No idea how to take this ;-)

 

I'm still thinking 4-6" here in Londonderry,NH.

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BOS is in the watch now.

 

SREF plumes are actually clustered decently in the 5-10 zone.

 

This forecast sucks. It's so close to being more as you can see how models really hang the good precip and dynamics right at the coast. I see both pros and cons..just a tough call right now. Starting to think Saturday Night potential may be fizzling here..and perhaps late Sunday gets better...but it's difficult to say.

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New SREF plumes are actually more impressive at several of the far interior forecast points thanks to that nearly stationary trough. I think you're good.
Almost half of the members try to get 1" liquid here from the inverted middle finger. I hate relying on that, but the EC has the signal too so hopefully it's legit. Rates won't be too heavy, but it's wintry appealing!
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Almost half of the members try to get 1" liquid here from the inverted middle finger. I hate relying on that, but the EC has the signal too so hopefully it's legit. Rates won't be too heavy, but it's wintry appealing!

 

Is this what the bitches call "mood snow?"

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Sure, but the odds are pretty good that this will translate to a winter weather advisory, not a winter storm warning, because it's likely that warning criteria won't be met according to their own current forecast.

 

Keep in mind that doesn't matter. A watch just translates to 50% confidence in reaching warning criteria.

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Keep in mind that doesn't matter. A watch just translates to 50% confidence in reaching warning criteria.

 

Right. And I think, given the 57% of 4" as Jerry referenced, that the odds of 6" are subsequently less than 50% in their thinking. Hence why I find it a touch inconsistent, but I'm probably nit-picking at this point.

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Right. And I think, given the 57% of 4" as Jerry referenced, that the odds of 6" are subsequently less than 50% in their thinking. Hence why I find it a touch inconsistent, but I'm probably nit-picking at this point.

 

Well that's also a backyard kind of number on their probability maps. The watch/warning/advisory is for zone average. I realize Suffolk is a small county, but BOS is also right on the water and probably represents the smallest probability of 4 or more inches. The probability gradient is pretty sharp to the west.

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