40/70 Benchmark Posted February 13, 2019 Share Posted February 13, 2019 Yea, I was disappointed when I saw the baking soda today.....its gotten better, though. Link to comment Share on other sites More sharing options...
HIPPYVALLEY Posted February 13, 2019 Share Posted February 13, 2019 4 minutes ago, powderfreak said: Must mean the warmth is nearby. I love how that happens. You get the mid-level warmth to cause the smaller flakes to aggregate into bigger flakes as they get slightly wet aloft. There's probably some spring blue bomb going on at like H7-H8 at 32.1F. That is exactly what happened here, before the flip about an hour ago we had heavy snow with great snow growth for about 30 minutes. Link to comment Share on other sites More sharing options...
Sugarloaf1989 Posted February 13, 2019 Share Posted February 13, 2019 Light sleet and pixie dust, 22.3F. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted February 13, 2019 Share Posted February 13, 2019 1 minute ago, MarkO said: sleet and pixie dust now. You can see what happened on radar. I envision what PF said, seems to explain things. Hopefully I can get another inch for 4" of snow, add an inch of sleet, then we verify. Link to comment Share on other sites More sharing options...
Bostonseminole Posted February 13, 2019 Share Posted February 13, 2019 Snow and sleet combo.Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
STILL N OF PIKE Posted February 13, 2019 Share Posted February 13, 2019 29 minutes ago, CoastalWx said: Essex county getting heavy snow. 2-4” S of Pike , 3-6” Pike N w 5’-6’s mostly in Essex county AIT , Link to comment Share on other sites More sharing options...
alex Posted February 13, 2019 Share Posted February 13, 2019 13 minutes ago, powderfreak said: Dead calm here on the eastern side of the Spine with air filled thick with flakes.... while a Wind Advisory is in effect on the west side for gusts to 50mph. Calm on the upslope (the low level jet is rising to get over the mountains), strong winds mixing down on the downslope. Which is why we get high winds in Stowe on NW flow. Edit: Not sure why that graphic is so small, ha. This is a great explanation, THANK YOU! Link to comment Share on other sites More sharing options...
HIPPYVALLEY Posted February 13, 2019 Share Posted February 13, 2019 4.5” here before flip and then maybe .5-.75 sn/pl mix. Just some pellets and pixie dust now. Link to comment Share on other sites More sharing options...
wxeyeNH Posted February 13, 2019 Share Posted February 13, 2019 20 minutes ago, alex said: Really??? How is it that it's a tornado up here and you have light wind? Make the wind go away lol Hum, I don't know Alex. Mount Washington wind direction is 140. So that's SE. Isn't Crawford Notch about in that direction for you? Maybe all the wind is funneled narrowly through the Notch and comes along the river right through your valley. It's really interesting because usually it's roaring up here but not tonight. Just gentle light to moderate snow. Link to comment Share on other sites More sharing options...
MarkO Posted February 13, 2019 Share Posted February 13, 2019 2 minutes ago, 40/70 Benchmark said: Hopefully I can get another inch for 4" of snow, add an inch of sleet, then we verify. I got pretty close to 4" last measurement, but now it's actually collapsed almost down to 3. Good luck, cause it's comin! Link to comment Share on other sites More sharing options...
OceanStWx Posted February 13, 2019 Share Posted February 13, 2019 6 minutes ago, powderfreak said: This got me thinking how rare it is to get great snow growth in these types of events. The mid-level warmth is also what's causing the best lift, so naturally as that level warms we lose snow growth. I mean you don't even have to look at soundings in these events to know its going to be baking soda or thousands of needles. Given the size of the flakes up here it wouldn't surprise me if this came in under 10:1 even for part of this. It's like a fog and air is thick with snow, but they are the smallest flakes you can get. Never a good idea to stray too far from 10:1 in a SWFE. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted February 13, 2019 Share Posted February 13, 2019 Still snow in Wilmington per coop observer. Had some sleet around 7, and flipped back. Link to comment Share on other sites More sharing options...
OceanStWx Posted February 13, 2019 Share Posted February 13, 2019 2 minutes ago, wxeyeNH said: Hum, I don't know Alex. Mount Washington wind direction is 140. So that's SE. Isn't Crawford Notch about in that direction for you? Maybe all the wind is funneled narrowly through the Notch and comes along the river right through your valley. It's really interesting because usually it's roaring up here but not tonight. Just gentle light to moderate snow. Good inversion just about summit level, so most likely downslope winds. We definitely don’t have the observer networks BTV and ALY do in downslope regions, so we don’t here about it as much. Link to comment Share on other sites More sharing options...
wxsniss Posted February 13, 2019 Share Posted February 13, 2019 17 minutes ago, dendrite said: 1. AWT 2. The NAM had been pretty spot on for 48hrs. I think it was well under .50” QPF as snow for most of SNE. 13 minutes ago, ORH_wxman said: I made a post last night going over typical parameters we want to see for solid warning amounts in a transition SWFE. You want a classic "cross hair" sig on the soundings...that's just a quick way of saying the omega lines up with the snow growth zone...and you typically want big omega too. Not just some 15 micro bars per second maxima. We didn't have a cross hair sig in this event so that is why it is good to stick to advisory amounts. 12/16/07 had a big cross hair sig despite it being a SWFE it had this bullseye at like 550-600mb where the snow growth temps were. Point two, which you mentioned, is a good one too. You want a big thump of rates on liquid equivalent. Seemed to start off that way today but then died off after the first 90 min or so. So even with crappy snowgrowth, we could have maybe tickled 5-6" if the rates stayed high...but it's usually good to see at least a tenth per hour of LE on the model guidance. Yeah roughly eye-balling HRRR soundings we were under 10 ub/s most of the event, brief maxima at 15 and that was well under the growth zone. Not screaming big thump. Never really got excited about this event (as evidenced by 0 post count in lead up). I took this more as a quick exercise to refine forecasting of onset / changeover / total accum. An attempt to make lemon juice out of this lemon of a winter. I expected 3-6" in Boston area based on a NAM/Euro blend, but I'm not sure KBOS even scraped its way to 3". Logan reported 2.2" at 6:49pm. I was counting on more intense rates based on some guidance in the 22z-0z timeframe just before the changeover, but that didn't materialize. You guys and others had all the caution flags going, and just about everyone in here was tempered. Gotta love the TWC map (? Storm Maya), last night it had something like 5-8"/8-12" for most of SNE/CNE. Link to comment Share on other sites More sharing options...
Lighteye Posted February 13, 2019 Share Posted February 13, 2019 Frzr in Durham CT Link to comment Share on other sites More sharing options...
CoastalWx Posted February 13, 2019 Share Posted February 13, 2019 Wilmington is sleet and it’s about on rays fanny. Link to comment Share on other sites More sharing options...
Damage In Tolland Posted February 13, 2019 Share Posted February 13, 2019 Just now, CoastalWx said: Wilmington is sleet and it’s about on rays fanny. Hammertime Link to comment Share on other sites More sharing options...
dendrite Posted February 13, 2019 Share Posted February 13, 2019 1 minute ago, OceanStWx said: Never a good idea to stray too far from 10:1 in a SWFE. We've had a few the past decade that began with a really cold start (near 0F) and that put the first 3-6hours straight in the DGZ since the "warm" tongue was relatively cold. Eventually we would end up pinging in the mid 10s anyway, but that's one way we squeezed out ratios from it. Of course the first few hours of 15-20:1 got a couple of inches of 9:1 sugar on top of it to pack it down in time for the 6hr measurement. By the time the sleet was done the initial fluff in the pack was a distant memory. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted February 13, 2019 Share Posted February 13, 2019 5 minutes ago, CoastalWx said: Wilmington is sleet and it’s about on rays fanny. Can just here it mixing....just cleared. 4". Pounded past hour. Link to comment Share on other sites More sharing options...
BuildingScienceWx Posted February 13, 2019 Share Posted February 13, 2019 After about 3.5" of sn and ip, we're now zr. Already a noticeable accretion on most surfaces. 28 degrees. We better get to 32 soon, I can't have a repeat from a few weeks ago.. I think I get above 32 by midnight, any thoughts? Link to comment Share on other sites More sharing options...
geo1 Posted February 13, 2019 Share Posted February 13, 2019 2 minutes ago, CoastalWx said: Wilmington is sleet and it’s about on rays fanny. Mixed with snow but yes we are transitioning. 4” is my best guess another slopfest! Link to comment Share on other sites More sharing options...
J.Spin Posted February 13, 2019 Share Posted February 13, 2019 Event totals: 1.9” Snow/0.25” L.E. Details from the 6:00 P.M. Waterbury observations: New Snow: 1.9 inches New Liquid: 0.25 inches Snow/Water Ratio: 7.6 Snow Density: 13.2% H2O Temperature: 16.5 F Sky: Snow (1 to 4 mm flakes) Snow at the stake: 23.0 inches Link to comment Share on other sites More sharing options...
CoastalWx Posted February 13, 2019 Share Posted February 13, 2019 3” here. Half inch of sleet. Link to comment Share on other sites More sharing options...
rimetree Posted February 13, 2019 Share Posted February 13, 2019 Snow still ripping pretty good in PSM. Getting close to 4 inches in the open. Link to comment Share on other sites More sharing options...
Thunderblizzard Posted February 13, 2019 Share Posted February 13, 2019 Transition to ZR is underway. 3.4" of snow/sleet. Temp is still at 22. Link to comment Share on other sites More sharing options...
mahk_webstah Posted February 13, 2019 Share Posted February 13, 2019 I’m in New York but I’m looking at my cameras at home and it looks like pretty heavy snow and a lot of wind. Is that what you’re getting Brian? Link to comment Share on other sites More sharing options...
EMontpelierWhiteout Posted February 13, 2019 Share Posted February 13, 2019 3.75". Air filled with small flakes and piling up faster than expected. Link to comment Share on other sites More sharing options...
SlantStickers Anonymous Posted February 13, 2019 Share Posted February 13, 2019 Still snowing, sounds like I’m getting some pingers mixed in now though. Link to comment Share on other sites More sharing options...
wxsniss Posted February 13, 2019 Share Posted February 13, 2019 18 minutes ago, powderfreak said: This got me thinking how rare it is to get great snow growth in these types of events. The mid-level warmth is also what's causing the best lift, so naturally as that level warms we lose snow growth. I mean you don't even have to look at soundings in these events to know its going to be baking soda or thousands of needles. Given the size of the flakes up here it wouldn't surprise me if this came in under 10:1 even for part of this. It's like a fog and air is thick with snow, but they are the smallest flakes you can get. Is it really so rare? I vaguely / anecdotally remember SWFE's with extremely heavy opening thump and excellent snowgrowth before changeover. And how is this impacted by the level/shape of the warm advection in mid-levels that determines where the best lift is... Link to comment Share on other sites More sharing options...
Damage In Tolland Posted February 13, 2019 Share Posted February 13, 2019 9 minutes ago, CoastalWx said: 3” here. Half inch of sleet. Congrats on keeping it all week Link to comment Share on other sites More sharing options...
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