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January 24-26: Miracle or Mirage Thread 2


mappy
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4 minutes ago, StormyClearweather said:

Okay I'm about to go super weenie here, but that's where I am mentally. You probably already know this, but per this paper, the FV3 is being retired as well when RRFS comes online: https://journals.ametsoc.org/downloadpdf/view/journals/bams/aop/BAMS-D-25-0323.1/BAMS-D-25-0323.1.pdf

The RRFS switched to MPAS for v2, which is (I believe) what we're watching slowly roll in. Supposedly, even v1 outperformed most high-res models, with some reflectively issues that have hopefully been resolved per that paper. 

I'll stop now. :weenie:

I was aware that the FV3 based RRFS got absolutely shellacked in testing with offices and centers. It originally also supposed to go to 72hrs only and there was outcry of loosing the extra 12 hrs the NAM provided. They *points vaguely* folded on both thankfully :lol:

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2 minutes ago, wxmeddler said:

I was aware that the FV3 based RRFS got absolutely shellacked in testing with offices and centers. It originally also supposed to go to 72hrs only and there was outcry of loosing the extra 12 hrs the NAM provided. They *points vaguely* folded on both thankfully :lol:

        Yes, but we're still going to get 2 years of the FV3-based RRFS in operations.

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8 minutes ago, stormtracker said:

RGEM is just a massive sleet bomb with a primary into OH

RGEM cold press at 700 is much better on 0z. It can't hold off the surge down here, but when comparing up in PA and NE it's obvious. Not saying it's going to change anything in future runs - just an observation that the cold is much "pressier" in the 0z.

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1 minute ago, stormtracker said:

RGEM is just a massive sleet bomb with a primary into OH

Yeahhh... The AI's, Euro, and MPAS based cores seem to be leaning that way. In a way the coastal "low" is just pressure falls along the warm front due to the insane isentropic lift occurring.

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1 minute ago, Maestrobjwa said:

Don't chase a coastal in a nina if you value your mental health, lol

I don't understand the comments about the ENSO state for a system within 72 hours. The ENSO is helpful for long-range guesstimating, not short-term anything. Is it less likely to have a MECS in a Niña? Yes. If the correct ingredients are there for a MECS, and it happens to be in a Niña, will it still happen? Yes. ENSO only affects the odds of the players coming to the table. Once the players are on the table, the atmosphere cares not if it's Niña or Niño; a storm won't downtrend or uptrend solely because of the ENSO state.

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