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February Medium/Long Range Thread


stormtracker
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16 minutes ago, yoda said:

After Tuesday night disaster at work (I work at Amazon and we had to stay open because DCA1 said we're sending you 5k of packages in two trailers) - and trying to get to work was a disaster in itself - I've already flagged next week with our management/operations team.  

Plus our bozo day shift said hey we're going to leave all your carts outside... so they are covered in snow and ice and not bring them in because... we didn't feel like it.  And there's over 250 of them.  It was not a fun 4 hours the next night.

Hey, I work at DCA1! Sounds like a nightmare

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7 minutes ago, psuhoffman said:

Ok a few points rattling through my brain

1) there are actually things I like better about this Euro run.  It focuses on the arctic boundary wave associated with the TPV more (as I suspected and hoped guidance would come around to) and because of that it develops the system and starts to mature sooner.  It moves a little quicker which cuts down snow totals from HECS to MECS levels.  But its a much safer way to go, this progression would have a lot less bust potential than relying on the late bomb phase capture tuck scenario of the 12z euro where everything gets under us and we need it to come straight north really to get us...a SW to NE trajectory is much safer if we want to guard against a really bad GFS like outcome which honestly is more important to me than shooting for the moon here.  Yea I would LOVE 20" but if it comes with a big risk of 2-4" instead...I'd rather take a safe 10-15" snowstorm.  

2) The 12z op euro was one of the snowiest solutions across the EPS.  There was one absolutely bonkers run that was a 2016 1996 type redux with 30"+ across the whole area...then there were 4 members that were similar...but the op was an extreme outlier high end solution.  It was probably just random chance that it spit out one of the bigger permutations.  A 8-15" type snow was the more common result across members.  And then there were some "blah" minority results also...BTW among those there were more misses due to over amplified cutters than OTS GFS solutions, but there were a few of those too.  All that to say, the 20" HECS solution was never the most likely outcome even within the euro suite.  

3) anyone who throws a fit if we end up with a 10-15" snowstorm should be taken out back the woodshed and *&^&%*$&&*%&%.  Frankly that goes for a 8-12" storm also... if we end up with some 4" weak sauce ordinary storm sure, if MD gets fringed again sure...if this euro ends up the final result we should be acting like those people in philly after the eagles won the super bowl.  We haven't had a widespread storm like that in years.  We don't live in Vermont.  A 10" snowstorm is a freaking huge win. 

4) The DC-Baltimore area has had 10 HECS storms since 1950 total...and worse only 1 of them came in a la nina winter.  1.  1 more than none.  in 75 years.  So get that out of your heads.  If we do get a HECS then act like you just won the weather lottery because you did.  Frankly we've only even had 8 MECS (this is subjective but by my count) storms in the last 75 years in a la nina.  But that's way better odds than 1.  8x the odds lol.  So I think MECS is probably the reasonable high end expectations here and that should be totally fine.  That's still a super rare outcome!  When I said I think this happens and we have a good chance at a big snowstorm before the winter is over...I wasn't ever thinking HECS.  I was picturing a 8-12" type storm.  

 

Great post, thanks for the info!  All I want is what Pensacola, FL got -- 10" of snow falling during the day with temps in the 20s

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7 minutes ago, Baltimorewx said:

Don’t any of yall have girlfriends or wives to take to dinner? Bunch of weenies in here tonight. The NAVGEM isn’t on board so I’m out 

Says the guy with the wife lol hi friend!

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37 minutes ago, mitchnick said:

And that's gunna be pure fluff with 20:1 ratios I bet.

Looking at h7rh it’s still snowing from a Leesburg to DC northeast line and it’s not making much progress due to the inverted trough between the surface low and the upper low, it’s wrapping around. Probably can tack on another 1-3” across MD. Maybe more for us. 

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24 minutes ago, psuhoffman said:

Ok a few points rattling through my brain

1) there are actually things I like better about this Euro run.  It focuses on the arctic boundary wave associated with the TPV more (as I suspected and hoped guidance would come around to) and because of that it develops the system and starts to mature sooner.  It moves a little quicker which cuts down snow totals from HECS to MECS levels.  But its a much safer way to go, this progression would have a lot less bust potential than relying on the late bomb phase capture tuck scenario of the 12z euro where everything gets under us and we need it to come straight north really to get us...a SW to NE trajectory is much safer if we want to guard against a really bad GFS like outcome which honestly is more important to me than shooting for the moon here.  Yea I would LOVE 20" but if it comes with a big risk of 2-4" instead...I'd rather take a safe 10-15" snowstorm.  

 

 

By DC/BALT "HECS" what parameters are you using? 

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Take this FWIW but I just looks at every eps member and the breakdown of NW v DC area Jack v weak/SE members is almost exactly the same 12z to 18z. 
 

The difference is the weak SE misses went from close misses with a ton of snow just to our east to in many cases no stole at all with like 2-4” as the max anywhere.  The weak camp got really weak. The already east camp went way east. 
 

The jack camp also lost some of its crazy 20-30” members. They are more commonly 8-15” type storms. Btw when judging the eps remember it’s a cold storm and they are low resolution using 10-1 and cut off the end of the storm.  So a .7 qpf run is probably a 10” snowstorm.  Comparing eps members to the op is difficult in that way. 
 

What to make of this?  I dunno. It’s good the track among the majority camp didn’t shift much. But it’s not good the weaker solutions didn’t converge at all and went the other way. Spread increased some. 
 

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