dendrite Posted November 19, 2014 Share Posted November 19, 2014 3 inches QPF, nice, normal LES is what 30-1 plus?Not sure. 30:1 seems nearly impossible with these rates over the course of 6-12 hour clearing intervals though so it's hard to compare. The bottom of the pack is screaming for its mama like Jim Kelly in the SB. Link to comment Share on other sites More sharing options...
heavy_wx Posted November 19, 2014 Share Posted November 19, 2014 I don't think normal LES has ratios that high, but I could be wrong. Maybe in some cases? The nature of LES and convection I think cause ratios to still be high, but aren't true fluff bombs. It depends on the specific microphysics of a particular case and where the greatest lift occurs. I've seen fairly dense snow fall from LE where surface temperatures were around freezing and 850 mb temperatures were around -10C (just under the 13C delta T threshold). The aggregates were wet due to some freezing but also probably some accretion of supercooled water. Other cases where it's really cold in the region of greatest lift you can get dry, low-density aggregates of pristine crystals. Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 I don't think normal LES has ratios that high, but I could be wrong. Maybe in some cases? The nature of LES and convection I think cause ratios to still be high, but aren't true fluff bombs. i have no idea, just going by what Buffalo guy said. even with 20-1 thats a lot of water with another 24 inches coming , yikes. Heavy heavy roof loads, then rain? serious Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 with 70+ already fallen..add on another 30-50 lol.. Lord have Mercy After all of that, though, the 35" depth was a little underwhelming. Most of us have seen that at one time or another. Don't get me wrong....I'm sure there are some spots over 40". Link to comment Share on other sites More sharing options...
dendrite Posted November 19, 2014 Share Posted November 19, 2014 ART New Snow Depth 10.5 in. New Snow Water Equivalent 0.80 in. Total Snow Depth 15.0 in. Total Snow Water Equivalent 1.10 in. (13.3 to 1) That's all they got yesterday with all of those 1/4SM or less obs? The possible measuring error has to be pretty large in an event like this...snow and w.e. Whatever though. It's a sh1tton of snow. Link to comment Share on other sites More sharing options...
dendrite Posted November 19, 2014 Share Posted November 19, 2014 i have no idea, just going by what Buffalo guy said. even with 20-1 thats a lot of water with another 24 inches coming , yikes. Heavy heavy roof loads, then rain? seriousI had like a foot of liquid on my roof in 07-08. The farmer down my road had his barn collapse. Hopefully people there roof rake it before it turns to a glacier like mine did. Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 After all of that, though, the 35" depth was a little underwhelming. Most of us have seen that at one time or another. Don't get me wrong....I'm sure there are some spots over 40". Have you seen the pics in West Seneca? Not for nothing thats way more than the 35 Buffalo Soldier has, i have never seen that even with a 38 inch max depth. Arna has a 57 inch depth reported on Cocorahs Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 It depends on the specific microphysics of a particular case and where the greatest lift occurs. I've seen fairly dense snow fall from LE where surface temperatures were around freezing and 850 mb temperatures were around -10C (just under the 13C delta T threshold). The aggregates were wet due to some freezing but also probably some accretion of supercooled water. Other cases where it's really cold in the region of greatest lift you can get dry, low-density aggregates of pristine crystals. I just think with convection and latent heat release, you may locally raise the temperature a bit and also run the risk of riming if temps are warmer. Not to mention other cloud microphysics issues when you have convection involved. It all relates to what you said basically...but in this setup..I find 30:1 ratios are probably not going to happen. Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 After all of that, though, the 35" depth was a little underwhelming. Most of us have seen that at one time or another. Don't get me wrong....I'm sure there are some spots over 40". That guy wasn't even in the good bands. Those other pics look like 4-5' easily OTG. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 Have you seen the pics in West Seneca? Not for nothing thats way more than the 35 Buffalo Soldier has, i have never seen that even with a 38 inch max depth. Arna has a 57 inch depth reported on Cocorahs I was just speaking of what I saw, Steve....not for nothing. Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 That's all they got yesterday with all of those 1/4SM or less obs? The possible measuring error has to be pretty large in an event like this...snow and w.e. Whatever though. It's a sh1tton of snow. ...JEFFERSON COUNTY... WATERTOWN 12.8 700 AM 11/19 COCORAHS 1 S WATERTOWN 8.0 1058 PM 11/18 COCORAHS Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 Have you seen the pics in West Seneca? Not for nothing thats way more than the 35 Buffalo Soldier has, i have never seen that even with a 38 inch max depth. Arna has a 57 inch depth reported on Cocorahs Elma? Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 That guy wasn't even in the good bands. Those other pics look like 4-5' easily OTG. its insane Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 http://www.cocorahs.org/ViewData/CountyDailyPrecipReports.aspx?state=NY&county=ER Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 Elma? Lol yea auto correct FTL Link to comment Share on other sites More sharing options...
CT Valley Snowman Posted November 19, 2014 Share Posted November 19, 2014 I'm actually kind of hoping the second event fizzles somewhat or the trajectory changes. the benefit of us seeing the awesome powerful beauty of nature is not worth the cost of more human lives and structural/economic damage Link to comment Share on other sites More sharing options...
powderfreak Posted November 19, 2014 Share Posted November 19, 2014 Lol yea auto correct FTL Remember when we were talking about snow chances, and I said "unless something freaky happens" I don't see much hope for too much accumulation? Last night something happened. Mansfield got pounded by like a foot overnight. Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 Looks like that s/w ripped the ART band east. You could see that last night on radar. Congrats picnic tables and pump houses at 4k. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 http://www.cocorahs.org/ViewData/CountyDailyPrecipReports.aspx?state=NY&county=ER I want to see a pic of that 57" depth. Wow...another 30" en route. Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 I want to see a pic of that 57" depth. Wow...another 30" en route. Some of those pics posted in that thread show it IMO. However, they are sort of from afar...probably because those people are buried inside...lol. That one Nick posted from his window had a small house half buried. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 Looks like that s/w ripped the ART band east. You could see that last night on radar. Congrats picnic tables and pump houses at 4k. ART? Link to comment Share on other sites More sharing options...
CoastalWx Posted November 19, 2014 Share Posted November 19, 2014 ART? Oh..Watertown NY. Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 I want to see a pic of that 57" depth. Wow...another 30" en route. Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 Some of those pics posted in that thread show it IMO. However, they are sort of from afar...probably because those people are buried inside...lol. That one Nick posted from his window had a small house half buried. Ray be snorkeling to get out to take pics Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 Wow. Looks like New Foundland. Link to comment Share on other sites More sharing options...
powderfreak Posted November 19, 2014 Share Posted November 19, 2014 Looks like that s/w ripped the ART band east. You could see that last night on radar. Congrats picnic tables and pump houses at 4k. Yeah, lol. I was surprised with the 3-4" we got down here in town too. But nothing like higher up the slope. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 Ray be snorkeling to get out to take pics I wish I had gone out for that. They have another 3' en route. Link to comment Share on other sites More sharing options...
Ginx snewx Posted November 19, 2014 Share Posted November 19, 2014 I wish I had gone out for that. They have another 3' en route. I imagine some chasers are not too happy to be stuck for a couple of days. I would be ecstatic. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted November 19, 2014 Share Posted November 19, 2014 I imagine some chasers are not too happy to be stuck for a couple of days. I would be ecstatic. That's about the most snow that you will ever see on the ground in a populated area. Link to comment Share on other sites More sharing options...
ORH_wxman Posted November 19, 2014 Share Posted November 19, 2014 LES ratios can be higher than 30 to 1...I've seen it up around 40 to 1. But usually the snow is falling at a lighter rate when it's that high. More like an inch an hour or less rather than 4-5 inches per hour. 5 inches per hour just compacts down on itself too quickly to get 40 to 1. Dendrite structure, moisture and sfc temps will all play a role of course as well. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.