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Spring/Summer 2026 Pattern Discussion Thread
jaxjagman replied to Carvers Gap's topic in Tennessee Valley
93 right now,not sure we will hit triple digits,but should make a decent un at it,unlike yesterday there are no clouds today -
Next little batch dropped 0.06 up to 0.19 so far
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Hey guys...is there any connection between s Super Niños and more mushrooms growing? Just curious...the one and only time I ever saw them grow in my front yard was December 2015. And now this year I'm seeing more of them than usual around the city/county.
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Here is the best line I have seen that tempers the idea that the models are so good, they are better all the time by default, and by extension, human input is not needed. "Models now can give very precise-looking forecasts/output that can be *precisely* wrong! And going one step further: "Precision does not mean accuracy!"
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2026 Mid-Atlantic Severe Storm General Discussion
wxmeddler replied to Kmlwx's topic in Mid Atlantic
The over-convection and "big blobs" on the RRFS is a known bias or "bug" with the FV3 Dynamical Core. This was explored recently by Lou Wicker at OU (See: https://doi.org/10.1175/MWR-D-25-0230.1). In short, it can't really be fixed without significant changes to the core. OMD hasn't said it outright publicly but the original plan was to turn off the HRRR and RAP at the same time as the RRFS Operationalization. But they've scrapped that specifically because of the FV3 core issues. Now the plan is to turn off the HRRR and RAP when the RRFS transitions to the MPAS Core in ~2028. (https://www.weather.gov/media/wrn/calendar/RRFS_webinar_20260625.pdf)- 1,922 replies
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Central PA Summer 2026 Discussion/Obs Thread
canderson replied to Voyager's topic in Upstate New York/Pennsylvania
A gully washer in HBG -
That's a solid sign. One thing that can misleading -- cool, dreary, and stable-looking can make ppl think, "how can this 'go away' so fast and big svr occur?" Well, it does and can be quite dramatic. Wichita Falls TX was socked in stable ahead of the warm front on 4/10/1979, and then an F4 cut directly through the city for the costliest tor up to this time. Same thing in Windsor CO on 5/22/2008. This was an odd one b/c it occurred the late morning, moved NNW, and the storm formed in a very narrow sweet spot of instability/shear ahead of a sfc low. See here: https://www.weather.gov/bou/TornadoMay22nd2008 Mean-looking! https://www.youtube.com/watch?v=GfYuT0oalXQ
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South of there. We may get some downpours tonight
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Good demonstration of how more resolution is not always automatically "better." There's probably a "happy medium" where errors can be smoothed while still having good resolution...but I imagine if we had like 0.25km resolution models it would be chaotic at best. Until better computing comes along I guess.
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It loves to make giant convective blobs on its composite reflectivity fcst. Once it goes operational, and ppl use it more, I bet that will be a sig complaint, and they will address it. A big issue w/ mesoscale models now is that the more hires they get and more directly simulate the atmosphere processes, the challenge to get everything in balance goes up in a non-linear fashion. In other words, any small tweak to fix one issue can have big impacts to another part of the model.
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2026 Mid-Atlantic Severe Storm General Discussion
batmanbrad replied to Kmlwx's topic in Mid Atlantic
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Spring/Summer 2026 Pattern Discussion Thread
John1122 replied to Carvers Gap's topic in Tennessee Valley
The DP is 78 right now as we approach the noon hour. This went from a drought to the most humid summer I can recall here. -
The RRFS looked pretty good too. I feel like it has tended to be very bullish on convection this season.
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Short range models still showing mostly south jersey for severe threat later?
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If these training cells don't lift north soon (or weaken), Oahu is going to have some serious flooding issues.
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Yes, quite stable looking w/w a mid level deck (almost asperitas). However, there is instability above that, as evidenced by the sharp showery nature of the rain, Driving a short time ago, I'd literally hit a wall of rain, but the shafts are very narrow. Drove another 500 ft, and it would just stop! No vis reduction. And the rain was heavy not b/c of big drops, but the density was very high, so warm rain process and shows how tropical juiced things are! I did not like that the 12z HRRR showed almost nothing for the DC area this aftn, but the 13 and 14z runs bring it all back. Not quite as intense as say the 00 and 06z runs, but at this point, we'll just have to see how the mesoscale details work. Due to the rain and cloud cover, hard to tell if this is any real front across the region. Winds are all generally light S from the PA border and S. No real temp gradient either, all in the mid-upper 70s. No 80 until RIC and that just SE of there. Still early though. The AM convection is on schedule and modeled well.
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Augdewst 2026: Summer's Last Stand
VivaManchVegas replied to Prismshine Productions's topic in New England
Sorry to hear that comrade. -
I don't even want that.
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The woodyard is in Sherborn. Which although is just as bad or worse I am regulated by the state as a farm.
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Augdewst 2026: Summer's Last Stand
VivaManchVegas replied to Prismshine Productions's topic in New England
I am surprised they let you cut so much wood in the peoples republic of Southboro. Do you have people protesting you at the end of your driveway? -
Cloudy and dreary is the theme today (so far). Not seeing much clearing potential on visible sat either. But we'll see if we can get robust convection later with dewpoints being high.
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83F / 77 dew. Feels like 92, even with the cloudy skies. The sun is starting to poke out more, which is just gonna make it worse.
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Augdewst 2026: Summer's Last Stand
Torch Tiger replied to Prismshine Productions's topic in New England
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Augdewst 2026: Summer's Last Stand
ForestHillWx replied to Prismshine Productions's topic in New England
Up at Schroon Lake for the week; 48 this morning. Beautiful day on tap.
