Bob Chill

I'm not feelin a nam like solution with qpf but I do like all guidance running a measurable stripe through my region. Pretty sold on the 1-2" potential. Above that is possible but light events are what they are. H5 is pretty flat. 100% stoked that it's a daylight event with a start around sunrise.

Over the last 10-12 years we've had a lot of a zippy busy northern stream action when we're in the game. Lots of mid range flip flops and phantoms. The good thing is the phantoms break both ways and what looks like a nothingburger at d5+ can become a somethingburger at d4- lol. Tracking can be frustrating because any second or 3rd or 4th or whatever shortwave in line is never locked in. I no longer get deeply involved or overthink in patterns like this until a potential event is first in line. Otherwise it's just an exercise in chasing tails and kicking rabbits

I'm cautiously optimistic for an accum event down here. Trajectory and strength keeps the typical waa risk in the mid levels at bay. Surface temps look surprisingly good. Current cold rain event bucked the lead up dry trend we've been seeing for basically months. Ingredients are there for an efficient accumulater. Limited max potential though so 1-2" would be a reasonable expectation at this point but there's not a lot of wiggle room for mixing problems in my hood and those problems seem to find any way possible to show up no matter what the lead time is lol

A little neg ao/nao goes a long way. Closed ridge over GL and closed low over NF is a pretty classic way to get something to work in the MA/SE. Especially in my hood.

Never was in the game for snow but it's colder than forecast down my way. Sitting at 30 degrees and precip should start around 3am. Frozen is frozen or something like that lol

I was just going to post this response lol. NAO has been mostly positive since 2011 lol. Majority of times we've had a -nao it was bootleg and not really classic. Jan 2016 was a good west based one. We wasted a few others but if you look at the #s it looks like we wasted some good ones but they really weren't that good in reality. #s don't tell the whole story. A good -AO (which has also been lacking) pushes the northern jet south entirely so colder air is more entrenched over a much larger part of the conus. That works too even when the nao isn't friendly. Stale air is still cold in the mids and not running away like a scalded dog. There have been some pretty big stretches in the past with mostly +AO winters but the current one is def on the long side. Would make a huge difference to have a good 30-45 day -AO. If it was right now the current storms coming over the next week would be whiter than wetter but it's not breaking that way. Cold is running away pretty quick and it's not very deep to begin with. Dec 2013 had a big artic high that pushed way south before heading east. The cold highs over the next week or so are pretty shallow and on the move. That's dicey in January.

Hope all my old digital friends to the north have a great holiday. 3 of our 4 kids made the trip for the weekend and we're eatin' good tonight. 16lb brined and spice rubbed bird just came off the smoker. 3 hour cook using lump charcoal and a couple chunks of apple wood in the mix. Havent had any yet but pretty sure it's going to be amazing

BWI: 19.2" DCA: 11.6" IAD: 22.3" RIC: 9.8" SBY: 11.7"

Oh yeah

I'll be happy with one accum event before the holidays lol. Overall nothing shows a "snowy" pattern but all lr guidance is advertising "cold enough to snow" temperatures for several weeks in Dec. We don't want mega cold anyways. Giant departures require giant high pressure and without looking back at data I'm pretty confident guessing that ice box December's are very dry here. From what I'm seeing we probably don't have much of a chance before Dec 10th but the next couple weeks after that will have enough cold over or around us to present a chance or 2. My yard requires a lot more work than yours this time of year so my imby lr forecast isn't very optimistic lol but I'll always root for the DMV

Winter rarely just blasts into the MA early season. It's a carving process and we're usually 3rd on the list when it happens (MW first, NE second, etc). First week of Dec looks like a carving process to me. This is an interesting jet panel. If you animate d10-15 it's pretty clear that the eps wants to press (or carve) the northern jet down into our latitudes. Still not good enough here but the process is ongoing Overall it's an encouraging jet structure with split flow and convergence. Mean QPF panels show moist SW flow embedded in this. If this verifies, areas to our west and NE will be in the crosshairs for overrunning type snowfall. If the carve continues southward it would be our first real window of opportunity beyond d15. Patterns like this can be active with precip but not really a big storm pattern. Which is probably good. It's really really hard early season to get a wound up storm to track underneath of us or be cold enough for snow. Much higher odds with a weaker shortwave zipping along

The ultimate model "inverse can kick" period of all time was JFM 2014. It was uncanny

Clear skies but not happenin down here yet. Milky way looks cool tho lol

The weeklies H5 that Will posted is pretty ideal for small/moderate events. I dont really like big downhill/uphill patterns. Potential for bigger storms is better but lots of waiting and high risk of things not turning the corner in the right spot. The broader trough can be more active and shortwaves can get going much further west with good trajectory for the MA. TN Valley overrunners and things like that. In dec, big amplified stuff can often have temp problems too. Atlantic air moisture draw isnt nearly as friendly as Jan/Feb. Entrenched cold overrunning is easier to produce in Dec

Third event in the last 18 months down here. Kinda pedestrian. Last fall was better hahaha