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Feb 18/19 Disco/Obs


nj2va
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2 minutes ago, rjvanals said:

DC has been running real bad recently which is probably just terrible luck: 

2/7 - storm was supposed to some in at 4 AM but was slightly delayed; this allowed us to torch  the day before and caused the best snow to come in just after sunrise. This combined w the prior days torch caused white rain which had it come at 4 am would’ve been 3-4 inches 

2-10- DC missed 3-4 inches by being ~20 miles to far south due to storm track; bad luck 

2-12- DC misses 3-4 inches by being ~ 25 miles to far north due to storm track again; bad luck 

2-17- initial wave isn’t strong enough to dislodge the shallow warm layer and the column is off by 1-2 degrees at 6-8K causing the sleet storm; DC misses 4-6 

Get just 2 of these storms to hit, I’d be much happier 

Yeah, Good summary of the fail.

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4 minutes ago, clskinsfan said:

OKV doesnt keep precip totals. But I had 2.15 inches in January. That is 20 inches of snow with decent temps.

Jim’s Weather Station located very near the airport (you may have seen his site) recorded 1.70 inches in Jan with 0.85 coming on New Years Day in that freezing rain/rain event. He has us at 1.9 for this month. Granted there will be discrepancies around the county but that Jan amount just shows what I always say here. Precip is the issue. January wasn’t warm. It was plenty cold enough for some snow.

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1 hour ago, WxUSAF said:

You beat me by 0.8”! 
 

Actually, that sounding looked exactly as predicted by the models yesterday afternoon. I checked... maybe even better since IAD sounding was actually drier in the warm layer. Figured that would easily wet bulb below freezing for our snow thump. Obviously that didn’t work out.

I slantsticked my typing. Lol. 1.6" is the right amt. It's really unusual out there. My grass is almost covered in the back and it looks like snow. But you can walk of top of it and not leave footprints at all. I suppose feb 07 was just like that at some point. Legit concrete glacier. 

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4 minutes ago, Kmlwx said:

Non-weather enthusiasts better stay inside. I fear that people may look out, see what looks like their clear wakways and take a spill.

Radar still showing plenty of light returns over the metro area. 

Just took the pups out for a very long walk. Still some slush, especially in the deeper puddles, but shallower pools are freezing fast. If I hadn't been wearing my hiking boots which have good grip it would've been a back breaker. One guy was shoveling his sidewalk, and I don't think he realized he was only making it worse; there was already a significant layer of ice forming in place of the sleet. 

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3 minutes ago, Wetbulbs88 said:

Just took the pups out for a very long walk. Still some slush, especially in the deeper puddles, but shallower pools are freezing fast. If I hadn't been wearing my hiking boots which have good grip it would've been a back breaker. One guy was shoveling his sidewalk, and I don't think he realized he was only making it worse; there was already a significant layer of ice forming in place of the sleet. 

Agreed. Many out shoveling today but don't realize that there is better traction just leaving it be. 

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1 hour ago, RevWarReenactor said:

It didn't seem like a banding issue to me. This was all directed straight up I-95, and yes, its sleet, but its pretty juicy.

 

Meanwhile this same band hit up in Mon County, and spots there are reporting 9 inches of fresh snow tonight.

They have the same climo as down here basically. So they have 40 inches on the year, and here we have about 6 inches? That to me is just awful luck. That 40 inches on the season represents to me what DC/Baltimore could have had this year had things "gone a little different".

 

ugh.jpg

Good discussion. Also, that band hit too late after the column was wrecked. Look at the radar from 4am-8am. The heavy precip was all Winchester to Carroll County. That was the window for good snow along 95 and they were stuck in a dryslot.  By 9am when that band did finally get there the warm layer had taken over. Heavy precip earlier could also have helped mix out that layer and held it at bay longer.  But your point about bad luck is true. I think it’s some of both. 

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1 hour ago, jayyy said:

Dang! Have me beat by 3.5”! That extra 400 feet doe

The best part up here is how well we hold snow. This little high elevation area northeast of Westminster stays cold. I’m regularly 5 degrees colder than Westminster.  Often I like to drive around the area after a snow and it’s amazing how much more is on the ground a few days after here v Westminster or other parts of the county. 

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1 minute ago, ovechkin said:

Too bad nothing strong or organized enough to overcome whatever warm layer is there and change things to snow. 

At this point is probably not a warm layer, it’s just shallow stratus. Clouds aren’t deep enough to have ice nuclei available for snow crystals. So you get weak precipitation as fzdz. 

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