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Feb 18/19 Disco/Obs


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1 minute ago, CAPE said:

It sure would be nice if the precip were a bit heavier now while the column is still good. Just stuck my head out the door and it's all snow, but mostly light to at times moderate.

Temp is 26.

My temp is 25 in Clarksburg!  heavier the precip got, it changed to rain from Sleet!!! how is that possible?

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Just now, North Balti Zen said:

26 and rain before daybreak. Guess we will see what a legit ice event looks like in the corridors.

If this were to stay all frz, what is anyone best guess for how much ice we are facing? I've lost track of what total precip is expected, if you cut out snow and sleet.  It's clearly all rain now in downtown dc, and you can see it already starting to build up on the streets and sidewalks.

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2 minutes ago, osfan24 said:

No, but the much-ridiculed NAM once again lead the way on this. What a winter it has had. You can take the GFS, HRRR, and Euro and throw them in the trash can.

I'm sitting at 25 with a mix of sleet and freezing rain. Seems to go to all sleet in heavier bands. This is probably the most frustrating winter I can remember. At least some previous winters, you just closed the blinds and took the loss and took your lumps because you were coming off a run of really good winters. The amount of time I've spent tracking essentially nothing this winter makes me understand why Bob Chill stepped away.

Yeah, still don’t agree with all the NAM hot taeks. It missed the synoptic setup badly. 

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52 minutes ago, Rhoady said:

10z: 27F/23, light mix, 80/20 PL/SN--, 1.0"

Rates vary quite a bit; showery, from ++ to - every five to ten mins.

11z: 26F/25, light mix, 80/20 PL/ZR, 1.2"

 

The meso analysis that dec pic posted is relevant at least afa precip changing back from 90% ZR to 80-90% PL an hr or so later imby 

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Just now, D-Train said:

Anyone in Front Royal / Strasburg/ etc under the heavy stuff? If so, what’s falling?

I’m in south leesburg. All sleet. 7caefb74cf6caaba4ccde35165552fdb.jpg


.

It's still snow in the Winchester area. But I am eyeing those returns to my south as well. If that is snow we are getting buried. But I would bet it's sleet. 3.2 inches so far.

Snow 23 degrees.

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Forecasts have definitely improved over the years. There were countless busts in the 90s due to similar setups or just flat out undermodeled downsloping, etc. If anything, it’s impressive that the nam was so intent and correct about the mix line. Globals have improved at 5 day leads but there’s clearly still some areas for improvement in these types of fringe setups.

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Just now, 87storms said:

Forecasts have definitely improved over the years. There were countless busts in the 90s due to similar setups or just flat out undermodeled downsloping, etc. If anything, it’s impressive that the nam was so intent and correct about the mix line. Globals have improved at 5 day leads but there’s clearly still some areas for improvement in these types of fringe setups.

Yeah the biggest bust that comes to mind was Jan 25, 2000.  Of course that was great for snow lovers!

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Just now, 87storms said:

Forecasts have definitely improved over the years. There were countless busts in the 90s due to similar setups or just flat out undermodeled downsloping, etc. If anything, it’s impressive that the nam was so intent and correct about the mix line. Global have improved at 5 day leads but there’s clearly still some areas for improvement in these types of fringe setups.

I think people just need to start putting more stock into seasonal trends.  Every winter event this year, at least in DC, has featured a quicker flip to mix and less snow than models suggested.  In other years, however, it seemed like every winter event went the other direction, where snow hung on longer and forecasts were always busting a bit low. 

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