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Everything posted by Ellinwood
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Snow depth maps are precisely my main influences with my forecast for this system, though with some touch-ups because some web sites will under-do snow depth if the rates can overcome the marginal surface temps.
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Been awhile... I could see some "boom" areas in the far NW burbs of the I-95 corridor if there's heavy rates late Saturday afternoon into Saturday evening, otherwise I'm more pessimistic than optimistic. Lines up fairly well with the NWS at least from Philly southward.
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2023 Mid-Atlantic Severe Wx Thread (General Discussion)
Ellinwood replied to Kmlwx's topic in Mid Atlantic
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3/12 Event: Winters Last Hurrah at Least East of Mountains
Ellinwood replied to Weather Will's topic in Mid Atlantic
Flip from rain to sleet to snow only took about 15 minutes in Germantown. -
3/12 Event: Winters Last Hurrah at Least East of Mountains
Ellinwood replied to Weather Will's topic in Mid Atlantic
Wanted to go full weenie along I-95 with what some of the hi-res are spitting out, but due to the timing and uncertainty with the rates I kept things a bit closer to climo. -
January 28-29 2022 Miller abcdefu Storm Obs/Discussion
Ellinwood replied to mappy's topic in Mid Atlantic
A quick update before a full day of watching the kiddo. -
GRAY'D
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Hola.
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Rain/snow mix in southwestern Germantown (mostly snow)... was rain/sleet an hour ago. 35F
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No changes to my forecast. Playing the usual rule of thumb that the deform band ends up more NW than progged.
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I like these storms... show up suddenly and no need to track little wiggles for 5 days.
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Pre-dawn start and cold low-levels will help, but that warm nose is gonna be a bitch.
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I'm pessimistic southeast of I-95. Rain or rain/snow mix early and temps struggling to reach freezing there. Hopefully rates can overcome it.
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Jan 31st - 33rd Storm Obs and Disco like it's 1979
Ellinwood replied to Bob Chill's topic in Mid Atlantic
Nothing too crazy. I think the NWS has a pretty good grasp of things right now. I'm relying mostly on the Sunday front-end thump along+east of I-95. -
I'm too fast for ya!
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Snow map. Very complicated setup with lots of caveats, but we seem to be converging on a moderate to major snow event across the Mid-Atlantic. IMO major decider will be coastal low development and resulting QPF for Monday.
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December 16-17, 2020 Winter Storm Obs/Nowcasting
Ellinwood replied to WxUSAF's topic in Mid Atlantic
Final... I hate how much sleet is progged to get northwest of I-95, but IMBY in Germantown I would think 3-5" of snow/sleet with downside 2" upside 6-7" is a good forecast. -
No changes... gradient area near I-95 is boom or bust at this point. Leaning slightly toward bust near I-95, but this isn't worth micro-editing.
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"I am altering the gradient. Pray I don't alter it any further." It was difficult because I also lowered my IMBY 6-8" forecast to 4-6", and I was contending with pulling the higher amounts even a tick further north than that. 12z EPS saved it for now, hehe.
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Eh. I was too high on amounts regionally for all but like 2 events a couple of years ago, lol.
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Updated my snow map... cut down on the total on the eastern gradient (mainly DC up I-95 and through southern and central NJ). Increased totals along the Appalachians.
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Haha you're fast. Initial thoughts... It's like 70% Euro 30% GFS. Respecting the Fall Line locally.
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Let the Fall Line do Fall Line things. Don't overthink it.
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Wednesday looks pretty legit... people are still suffering from 2019-20 PTSD.
