SnowenOutThere

Sun is out in Charlottesville!

Love when we get a wedge like this, makes for some easy and great photography if you're willing to wake with the sun.

Also, went out and drove 30 minutes to the Rockfish Valley Overlook off the blue ridge parkway! Got an amazing sunrise knowing the valley's would be in the cloud deck.

Thank you all. Agree that the 6z run really didn't go the right way... but, the 12z runs are interesting. They manage get a band of precip with lift from a deeper H5 trough and saturate the DGZ. Will need to monitor and if the 18z and 0z runs show it then I think it might be worth it. Wouldn't really be upslope, but just orthographic cooling of a band of precip which feels less risky to chase.

Both HRRR and NAM show first snows for the mountains this Saturday morning. Considering a hike out there but the soundings seem fishy. Would there even be enough of a layer for precipitation to occur? If so, would any snowflakes even form or would I get to hike in cloudy drizzle? Don't know the answers would love some help from our mets @WxUSAF @MillvilleWx @Eskimo Joe I plan to head out and try and hike early Saturday morning at the Cheat Mountain range at 4200-4400 feet and would love to make sure I don't drive 3 hours to hike in a cold, windy, freezing rain fog.

It actually gives us three separate snow storms that run starting October 25th.

Had a nice late sunset with a moon over the South Lawn tonight.

It's an insane meteorological solution. The low I've been discussing in the long range thread somehow cuts off and generates its own cold air. No way its right but was funny to see. I'll miss the NAM.

Currently it has one of the weirdest look's I've seen a hurricane take on.

NAM'ED (might be one of our last ones)

Alright, enough time has passed to throw this solution out the window. So what's figure out what went wrong as an exercise for this winter. So, our setup relied on a branch of the NS detaching and creating an unusually deep trough over the east coast in order to bring both cold air and the correct wind flow (NNW) to catch moisture from the lakes. Now, what initially would cause this NS trough? Turns out it was an interaction with a SW wave helping to pull it down (GFS run from when it was snowy) Compare that to it's current run. Though we still have our two main players it's interesting how different the circumstance is. Firstly, the interaction is occurring further east, which obviously hurts us. However, what is most interesting is that blob of vorticity over central Mexico as its a Hurricane ejecting it's energy eastward and thus pulling the pattern to be progressive. On the old runs the GFS brought it out to sea instead. Look at the knock on effects it has! On the old run you have a near textbook PNA ridge Now, you can see how there is more energy getting held underneath the ridge (the Hurricane's remains are now in there) which causes a flatter, and thus less blocky, ridge. Some other things you can notice is the previously detached low upstream of our trough has now morphed with it, which reduces the blocking pattern, and that the Artic in general is less amplified than before. All in all, pretty much everything went the wrong way for the mountains to pick up a significant snowstorm. Now, the reason I did this is 1. I'm bored and just took a climatology exam 2. To warmup for winter 3. To see how the models did. As mentioned in my first post nearly all models but the operational Euro had a pattern conducive to accumulating snow, and the reason the Euro didn't is because even back over the weekend it was correctly modeling the tropical impact over Mexico. This should be a lesson against trusting the AI models, as even they were wrong. Furthermore, the hurricane change was within 5 days from this weekend, and it was a dramatic miss, which should call into question any forecast beyond day 4 for synoptics (assuming our current funding for NOAA's soundings and data collection stays the same). Frankly, I wonder if our bad miss on the ice/snow line for last January's storm would've happened if we weren't cutting their data intake as it was a huge miss by our modeling for the storm track and impacts even at day 3. The bottom line of this post is we need to be extremely cautious in trusting the models come this winter. They simply are not preforming as well as in years past when it comes to what matters for us. I personally would not even trust the general synoptic pattern outside of day 3. Mets, or anyone else, please let me know how I did or if my reasoning was solid!

Around 3.1 according to nearby gauges in Charlottesville, probably had some upslope enhancement, and there are still puddles on the side streets. Home gauge in NOVA shows a respectable 2.9 inches of rain as well. Do wonder if this storm bears as a forewarning of what we might expect this winter if we get more inland storm tracks due to a warmer baroclinic boundary pushing inland.

First mention of winter wx in the morning AFD! Behind the frontal system, surface high pressure builds over the central CONUS beginning on Friday before shifting eastward. A tight pressure gradient between the surface high and the departing low pressure system leads to breezy conditions across the forecast area Friday night into Saturday. Northwest winds gust 20 to 30 knots, with higher elevations gusting up to 40 knots. Wind headlines may be needed across the higher elevations but we will continue to monitor. It`s also worth mentioning that with gusty northwest winds, upslope snow showers are possible along the Alleghenies on Saturday with high temperatures staying in the 30s across the ridges. Little to no accumulation is expected although the first flakes of the season are possible.

Classes posted for spring semester and I'll finally get to take the course I've been waiting for! Currently with the professor as he teaches Intro to Climatology or the grad level version of my Atmosphere and Weather course I took last fall and he's been great (test tomorrow though). Excited to learn some more stuff that'll help me write better posts on here (hopefully) in time for synoptic season!

You're seeing a fight between the trough being modeled progressively (Euro) and being held back (GFS). Here's Friday at 2pm on the GFS That trough then drops south and nearly induces a coastal low to form as it tilts negatively. The Euro is on a different planet, as it doesn't ever have that energy detach fully from the more northward low. The Euro AI is sort of in-between, with the low detaching and swinging south but not as intense Still have a long ways to go but we should hopefully see consensus emerge mid-week. If the Euro AI to GFS envelope is right then it'll be time to look at the close range models to see topographic effects and possible places that'll snow.