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January Storm Term Threat Discussions (Day 3 - Day 7)


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Poor timing with all of the GFS excitement but here are the EPS numbers for the last 11 runs

EPS members snow/sleet totals (inches) for the last 11 runs (College Park) through 00 UT Feb 3

90th percentile: 9 15 12 15 12 16 18 12 13 10 10

80th percentile: 6 10 11 9 10 12 13 9 11 7 6

70th percentile: 6 6 9 8 7 11 11 8 9 6 3

60th percentile: 4 5 8 6 6 7 9 7 7 4 2

50th percentile: 3 4 6 5 4 6 7 6 6 2 1

40th percentile: 2 3 4 4 4 5 6 5 6 2 0.8

30th percentile: 2 1 4 3 3 4 5 4 5 0.9 0.6

20th percentile: 0.7 0.6 3 2 2 3 3 4 3 0.5 0.4

10th percentile: 0.5 0.3 1 1 1 1 3 3 1 0 0.1

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2 minutes ago, osfan24 said:

Maybe I'm missing something, but this is barely even double digits, if that, for most. Would not call it a crush job. It needs to stay tucked more NW so it snows much longer. Duration is just too short. It's trying to get there, though.

Man at this point a day with a high temp that doesn't get above freezing is a crush job.  

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2 minutes ago, osfan24 said:

Maybe I'm missing something, but this is barely even double digits, if that, for most. Would not call it a crush job. It needs to stay tucked more NW so it snows much longer. Duration is just too short. It's trying to get there, though.

Anything over an inch is a crush job when you've tallied .6" over nearly 2 winters

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Just now, Wentzadelphia said:

Thermals playing a role over in S DE I assume? Because they got a lot more qpf than that. Looks like the old 33 and snow. 
 

I wish we had the para to see if it was supporting this or not. Idk fun to see, but hard to believe. 

850s never go below -1 even in S DE, and are colder than that for a fair bit of the storm. I'm guessing it's just GFS being weird with snow output. 

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12 minutes ago, Wentzadelphia said:

Wish I could get excited...hard to without eps on board 

17C3D806-AE92-4AE7-B93B-A5CF9220D05E.png

The euro isn’t flawless. You realize we’re still at the range when it was giving DC 20” of snow back in December. One of the storms in 2018 it was giving me 8” of snow literally 12 hours from the storm and I got NOTHING lol.  What’s odd is they are both opposite their biases right now. But this isn’t a typical gulf wave to coastal setup. The upper low is coming across pretty far north and it’s interacting with the NS flow some on the way across and that’s the driver here not the southern stream wave it links up with in the southeast. I wonder if that has to do with why they are opposite their tendencies. I also wonder if the NS interaction matters more here and if that might not favor the gfs some. 

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