Weather Sphere (@WeatherSphere22) header
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Weather Enthusiast | NOT a Meteorologist | Located in South-Central PA | Focus on Severe, Tropics, and Winter

Joined November 2024
Do have to wonder if we get a punch of "cool" air behind next week's storm system. True cold air is locked up well into the arctic and back toward Siberia, so it wouldn't be anything impressive.
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man I remember being here over the summer... wish I could've seen the temple during the fall. wow
清水寺から見渡す京都の街
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Weather Sphere retweeted
The jaw-dropping Sentinel-2 satellite pass of 190 MPH Hurricane Melissa, on this day in 2025.
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The Pacific continues to produce absolutely stunning tropical systems, now with Typhoon #INFA
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Certainly looking like a flood threat with our big system late next week across the east, assuming a scenario like the Euro shown here pans out. Squeeze-play between our strong system coming from the west and a remnant low in the Atlantic funneling moisture northbound.
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More much needed mountain snow coming to the Rockies, especially Colorado, over the next ~10 days.
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Perfect example of why we need our cold air source (Canada) to actually be cold this winter. You see a fairly large trough in the east with the 540 line dipping quite far south, and you think, "oh, it must be super cold!" When in fact it's barely below average.
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Confident enough to release what is likely my official winter forecast for the 2026-27 season. As you've probably heard a million times already, the big story is a still strengthening Super El Niño, with a winter forecast favoring above-normal temperatures across the northern U.S. and increased precipitation chances across much of the country. 🌡️ The main thing that sets this winter apart from past Super El Niños is our stoutly negative PDO, or Pacific Decadal Oscillation, where we have abundant warm waters in the north Pacific. Tie that in with our already weak polar vortex, I don't think this winter will be absurdly warm across the entire country like some past strong El Niños. I'll have a monthly breakdown at some point in the near future. 🌧️ For precipitation, as is typical in El Niño winters, looks to run above- to well-above-average across much of the country, except for the Northwest and northern Great Lakes. Frequent storm systems will pummel both coasts thanks to a hyperactive Subtropical Jet. However, due to a lack of any significant cold air source, much of this precipitation may fall as rain outside of elevation. ❄️ When it comes to snowfall, it is almost a guarantee at this point that the southern Rockies and Sierra see well above normal snowfall with the consistent storms. I also anticipate at least slightly above normal snow across portions of the Midwest and Mid-South as storms will frequently pass south of this area, though temperatures will likely be an issue. Much of the precipitation across the East Coast may end up as rain or mix rather than snow due to a lack of significant cold air, though I do anticipate the chance for bigger storms toward late January and February. The Northwest will also likely suffer from below average snowfall, due to most storms passing either too far north or south.
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just now realizing I shoulda made the precipitation also go by % of average... oh well
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The season of amazing sunsets is upon us
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60 years underwater and its in better quality than most PA roads
Drought conditions have exposed portions of historic U.S. Highway 6 beneath Colorado's Dillon Reservoir.
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Weather Sphere retweeted
🚨 New PolarWx Model Viewer is live 🚨 It's been a while since my PolarWx model page got an upgrade - so today I'm releasing a new model viewer with a fully interactive and customizable layout, many more plots & models, and many new features. polarwx.com/models/
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I decided to gather some thoughts on the upcoming Polar Vortex disruption and the Stratospheric Warming potential in the blog, going a bit deeper than usually here, also looking at some early weather indications. The article format allows going into more details than in an X post. severe-weather.eu/global-wea…
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Our stretch of nice weather in the East ends next week as a pretty potent system (or two) will form across the Midwest and move east throughout the week. Too early for specifics on totals and exactly when, but severe/flooding will be possible in the Deep South.
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Weather Sphere retweeted
❄️ High level thoughts about this upcoming winter: Winter Outlook 2026–27 These ideas are always a roll of the dice. So let’s roll ‘em… here’s my current thinking… This winter is shaping up to be an interesting one. A very strong El Niño is building in the Pacific, and it could end up one of the strongest on record. That will be the main driver of our pattern. Strong El Niño winters tend to have an active southern jet stream, which sends a steady parade of storms out of the south and up the coast. So I expect above-average precipitation this winter. Many are calling for a mild, less snowy winter - but it's a lot more complex than that. In the short term, there is a lot of buzz about the polar vortex. Models are showing it weakening to record-weak levels for early November. If that plays out, we may see cold air get into the Northeast later in November, maybe around Thanksgiving, and into early December. An early-season snow event wouldn't be out of the question. December is more uncertain. I lean toward warming later in December as we approach the holidays, since strong El Niño Decembers tend to run mild here, so the odds of a white Christmas may be lower this year. But an early disruption of the polar vortex like this one could flip that and give us a colder, more wintry December. So I'll be watching that one closely. Overall I expect temperatures to be above normal this winter. But they will generally be up and down, with colder spells mixed in with warmer spells. That means we will have plenty of opportunities for snow, but this can go either way. We are less likely to see a winter with sustained cold where the snowpack builds storm after storm. More likely, and as is typically the case, our snow totals will come down to a few bigger storms and whether or not they hit. I also think this winter may be back-loaded. El Niño winters tend to favor disruptions of the polar vortex in mid-winter. So February into early March may be our best window for colder air and snow after a potentially milder spell in January. Finally, we will have to watch for more mixed-precipitation events close to the shoreline of Southern New England. With southern-stream storms tracking near the coast and ocean waters running warm, the rain/snow line could set up right along the shore in many of these storms. Inland areas will have the better shot at staying all snow. Stay tuned. I'll update as the pattern evolves. And my caveat…these seasonal "forecasts" are always low confidence and more for entertainment purposes! 😊 But you all always ask for my thoughts on winter and now you have them.
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Some kind of storm signal continues to pop up here and there on some models for the first half of that aforementioned timeframe. Yes, I know, this is like 2 weeks out, but the pattern could support *something* in this timeframe. Again, remember, it's early/mid November, so it would be 90% rain. But it's not impossible to get snow in northern areas now. Could be our first more widespread snow event in northern New England or the northern Great Lakes? Either way, got a long while to wait lol
Looking longer range, I'm liking the mid November range for a possible couple bigger storms if our teleconnections align. Think the 8th thru the 20th. More than likely rain for most, but I could certainly see some snow sneaking into the northern areas, namely the upper Great Lakes and New England. Nothing to get your hopes up about, just a sneaking suspicion we get some kind of strong storm system.
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Should be nearing the peak of our Super El Nino here within the next 4-8 weeks. Warmest waters are trying to creep west but seems unlikely at the moment.
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Low end tornado threat across southern Minnesota/northern Iowa tomorrow evening. Might sneak up on some folks.
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In case anyone in Colorado saw any posts about a "potential snowstorm" in Denver next week... Considering the NWS Blend of Models shows a whopping 0.0" for the city, I would lean toward a no.
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Looking longer range, I'm liking the mid November range for a possible couple bigger storms if our teleconnections align. Think the 8th thru the 20th. More than likely rain for most, but I could certainly see some snow sneaking into the northern areas, namely the upper Great Lakes and New England. Nothing to get your hopes up about, just a sneaking suspicion we get some kind of strong storm system.
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