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Light Snow Event - 1/17-1/18 Obs and Discussion


nj2va

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30 minutes ago, DSF said:

Can you explain that a little more?

storm 1 boundary/path will "sets the table" for where storm 2 has cold air to work with.  You want #1 further south, so that you have more wiggle room when #2 gets here or you stand to taint/changeover to sleet/freezing rain, or plain rain when you lose the cold in the lower/mid levels.  

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3 minutes ago, DCTeacherman said:

6Z EPS mean improved from 0Z, mean snowfall is 1-2 for DC and 2-4 for the most of Maryland, I can't see the individual members though.  

That’s good. Could be a decent little event. HP is not in an ideal position but it’s also not terrible. Majority of precip comes at night. Amazing how if this event was coming last week at this point, this thread would be like 30 pages...

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from LWX and their morning AFD

Low pressure will approach from the west on Thursday and pass to
the northwest Thursday night. Light precipitation will
accompany this system, focused on the afternoon and evening
hours. Cold air from the transient high will remain in place, so
it appears at least some of the precipitation will be wintry in
nature. As the low nears, warmer air will advect in aloft, so
snow will become less likely, with sleet, freezing rain, and
rain all possible depending on thermal profiles. Surface
temperatures are most likely to remain above freezing south/east
of I-95. Regardless of what type of precipitation falls,
amounts would most likely fall into the winter weather advisory
category given the light nature of the event.
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Just now, lpaschall said:

I think we want a further south track to set up for the weekend storm. Right?

I think we want it stronger to help compress the flow some.  It's weaker than 6z for sure but I'm not smart enough to know exactly how one effects the other.

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7 minutes ago, LP08 said:

I think we want it stronger to help compress the flow some.  It's weaker than 6z for sure but I'm not smart enough to know exactly how one effects the other.

Would love someone to explain exactly what we want from this storm in regards to Sunday. I keep seeing conflicting statements on it.

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9 minutes ago, LP08 said:

I think we want it stronger to help compress the flow some.  It's weaker than 6z for sure but I'm not smart enough to know exactly how one effects the other.

pasnownut explains it well 

15 hours ago, pasnownut said:

storm 1 boundary/path will "sets the table" for where storm 2 has cold air to work with.  You want #1 further south, so that you have more wiggle room when #2 gets here or you stand to taint/changeover to sleet/freezing rain, or plain rain when you lose the cold in the lower/mid levels.  

 

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