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March 5th Snow Threat


WxUSAF

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  On 3/3/2015 at 6:25 PM, Bob Chill said:

Good range. 4" seems kinda easy at this point. 8" is a different story. Someone to the nw or even ne could pull off double digits. I'm just assuming an overall 10-1 ratio. We may have some fluff when things get cold but the beginning should be a <10-1 pasting for a time.

Yeah could be. 4-6 is a tight range tho. ;) I haven't put a ton of thought into ratios. My guess is bad ratios initially will balance out late making it fairly close to climo on the avg.
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  On 3/3/2015 at 6:25 PM, StudentOfClimatology said:

You add an hour..7pm becomes 8pm, 1pm becomes 2pm, etc

And more critically:  "z" stands for zulu, as in "Zulu Time", aka Greenwich Meat Time (GMT).  So, if the OP is ever not sure what the current shift is, just Google "current Greenwich Mean Time" and he/she will get it.  

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  On 3/3/2015 at 6:28 PM, Tenman Johnson said:

Sun will not mean anything in this event. This is not a pi** as* light-moderate event starting at 12 noon and trying to accumulate in 33* air. Snow on the ground by sunrise, snowing moderately+ into the afternoon, temp around 30.

I agree that it wouldn't preclude a 4-10" thump -- just saying that the exact same setup at night probably yields an extra inch or two. Not a big deal...I'm just being greedy :)

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Man. Every model absolutely pummels NOVA especially Leesburg west. I would obviously prefer the Euro for strictly selfish reasons. But somebody, most likely in the favored spots, is getting a double digit snowfall from this one. We will have scored on 2 very different but very weird setups if this comes to fruition. Just a crazy 12Z suite for a March 5th event.

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  On 3/3/2015 at 6:28 PM, Tenman Johnson said:

Sun will not mean anything in this event. This is not a pi** as* light-moderate event starting at 12 noon and trying to accumulate in 33* air. Snow on the ground by sunrise, snowing moderately+ into the afternoon, temp around 30.

.5"+ in 6 hrs will crush roads regardless but you do have to consider it is March at least slightly.
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  On 3/3/2015 at 6:34 PM, 84 Hour NAM said:

If February were a real month, it would have 31 days and it would still be February.

We can call Thursday Feb 33rd if it makes it easier.

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  On 3/3/2015 at 6:25 PM, WxMan1 said:

The only thing that would concern me (heck, it's not even that big of a deal with those rates), is the fact that the bulk of snow would be falling during the day. I realize that the BL and surface layer will be plenty cold, but the early March sun angle will factor in like it did not with the pre-dawn event last St Patty's Day (when here in Crofton we got 8.5"). Nothing we can do about, but something to keep in mind. Even over the elevated areas out west that were all snow on March 6, 2013, while they were plenty cold at the surface, they saw their accumulation rate ("efficiency") cut back a bit after 12Z.

I'll take what we get, but honestly would love it if most of it fell at night.

 

3/3/14 stuck very well, even on downtown main roads with light to moderate 8:1 snow.  We did get a head start pre-dawn, and temps were in the mid to upper teens.  I think all the March caveats are legit, but potentially they could be overcome if this goes according to plan (ha).

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  On 3/3/2015 at 6:36 PM, Ji said:

not sure why people dont think it cant snow March 5. There is a better chance for snow on march 5 than december 5th(i know blasphemy)

dec 5 is a myth, and march is the new winter.

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  On 3/3/2015 at 6:14 PM, mitchnick said:

whoa.....those heavy totals that were WEST of the Apps are starting to link up east of the Apps

by tonight or tomorrow, the Euro will have GFS type totals I bet.....OK, I hope :weenie:

Yup. Although snow maps are of questionable value, it's nice to see those darker shades creep eastward.

MDstorm.

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  On 3/3/2015 at 6:38 PM, MDstorm said:

Yup. Although snow maps are of questionable value, it's nice to see those darker shades creep eastward.

MDstorm.

 

The snow maps are great for an apples-to-apples comparison to previous model runs... that's about it.  It pretty clearly shows if the model is trending colder/wetter or warmer/drier.

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  On 3/3/2015 at 6:44 PM, Maestrobjwa said:

Ah, now it makes sense (well kinda, lol Don't know why the Zs' don't start on regular hours) Thanks (Btw Nice profile pic! Are you a Beethoven fan, btw?)

"Z" is based on Zulu/UTC/Greenwich time.  We are 5 hrs behind UTC, so 00z aka 12am Z/UTC/GMT = 7PM EST

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