heavy_wx Posted February 18, 2014 Share Posted February 18, 2014 Did they take a snow core or was the liquid equivalent based on the ASOS measurement? The ASOS measurement can significantly underestimate the liquid precip especially if there's a decent amount of wind. Link to comment Share on other sites More sharing options...
Evilpens64 Posted February 18, 2014 Share Posted February 18, 2014 Did they take a snow core or was the liquid equivalent based on the ASOS measurement? The ASOS measurement can significantly underestimate the liquid precip especially if there's a decent amount of wind. wasn't much wind at all Link to comment Share on other sites More sharing options...
djr5001 Posted February 18, 2014 Share Posted February 18, 2014 Honestly it didnt look much different than typical clipper or LES snow around here. Fluff to be sure - but nothing that stood out. Not sure their exact methods, but I would think it was under represented. I'm not sure if there are other reporting stations around here that have snow and water content as public info. It would be interesting to see if a site like KAGC had similar results there are a couple cocorahs reports from southwestern pa with 2.0", 2.6", and 2.4" new snow with melted liquid reported as .04", .06", and .07" respectively... (50:1, 43:1. 34:1) Link to comment Share on other sites More sharing options...
Burghblizz Posted February 18, 2014 Share Posted February 18, 2014 there are a couple cocorahs reports from southwestern pa with 2.0", 2.6", and 2.4" new snow with melted liquid reported as .04", .06", and .07" respectively... (50:1, 43:1. 34:1) Interesting - thanks I think that confirms that it was extremely dry and fluffy. However, at the same it probably shows that the NWS measurement probably under-captured the liquid content Link to comment Share on other sites More sharing options...
2001kx Posted February 18, 2014 Author Share Posted February 18, 2014 Not the best looking radar. looks like 1 hour of good snow then? Link to comment Share on other sites More sharing options...
Wmsptwx Posted February 18, 2014 Share Posted February 18, 2014 Gotta agree looks like an hour or two of snow for you guys maybe 2 inches I'd it comes down well enough. Link to comment Share on other sites More sharing options...
Evilpens64 Posted February 18, 2014 Share Posted February 18, 2014 HEAVY SNOW In Western Pa. Link to comment Share on other sites More sharing options...
MAG5035 Posted February 18, 2014 Share Posted February 18, 2014 Probably will see some redevelopment of precip behind the initial slug moving in but HRRR and RAP don't seem too impressed with much in the Sus Valley and focuses more on the NW part of the state but both still have 2-3 into the central counties. Will have to keep an eye on those trends. We're not in the best setup for prolonged precip with the low north of PA, and associated flow may hurt precip east of the mountains. Regardless, by the looks of the radar/cams and the obs in the western PA thread.. this initial slug is going to be a hard hitter and cover things up quickly. Link to comment Share on other sites More sharing options...
anotherman Posted February 18, 2014 Share Posted February 18, 2014 Band incoming..... Link to comment Share on other sites More sharing options...
irvingtwosmokes Posted February 18, 2014 Share Posted February 18, 2014 Heavy snow in Johnstown, it went downhill quick. We have thunder and lighting Link to comment Share on other sites More sharing options...
AlleghanyBlade Posted February 18, 2014 Share Posted February 18, 2014 Just saw a flash of lightning a few minutes ago towards Johnstown Link to comment Share on other sites More sharing options...
Mallow Posted February 18, 2014 Share Posted February 18, 2014 That's awesome, guys. Unfortunately, that embedded cell has completely fallen apart and the band is more uniform (and possibly weakening?). Link to comment Share on other sites More sharing options...
AlleghanyBlade Posted February 18, 2014 Share Posted February 18, 2014 Radar is showing snow here but not seeing any yet. Link to comment Share on other sites More sharing options...
MAG5035 Posted February 18, 2014 Share Posted February 18, 2014 Radar is showing snow here but not seeing any yet. Wow, same here. I'm into the >25dbz returns and nothing yet. Link to comment Share on other sites More sharing options...
JamieOber Posted February 18, 2014 Share Posted February 18, 2014 Wow, same here. I'm into the >25dbz returns and nothing yet. Is the radar off or something? It's still snowing at Chickaree mountain but the radar shows its past there. Link to comment Share on other sites More sharing options...
meteo Posted February 18, 2014 Share Posted February 18, 2014 Its at 17th street per the wtaj webcam that was just on the news. Link to comment Share on other sites More sharing options...
Mallow Posted February 18, 2014 Share Posted February 18, 2014 Is the radar off or something? It's still snowing at Chickaree mountain but the radar shows its past there. It's probably the easterly winds at the surface. The radar is hitting the snow higher up, but with the easterlies, it reaches the ground further west than shown. Link to comment Share on other sites More sharing options...
meteo Posted February 18, 2014 Share Posted February 18, 2014 Mag its coming your way almost a whiteout here. Link to comment Share on other sites More sharing options...
AlleghanyBlade Posted February 18, 2014 Share Posted February 18, 2014 I don't know if it got to you yet MAG but it's pretty awesome Link to comment Share on other sites More sharing options...
Laurel Highlands Wx Posted February 18, 2014 Share Posted February 18, 2014 Buddy of mine back home just had thundersnow. Link to comment Share on other sites More sharing options...
meteo Posted February 18, 2014 Share Posted February 18, 2014 The roads went from bare to covered in the last 3 minutes. Link to comment Share on other sites More sharing options...
pirates21 Posted February 18, 2014 Share Posted February 18, 2014 wind really picking up....it is snowing harder now Link to comment Share on other sites More sharing options...
meteo Posted February 18, 2014 Share Posted February 18, 2014 I can hear sleet pinging off the windows mixing in here with the snow. Link to comment Share on other sites More sharing options...
MAG5035 Posted February 18, 2014 Share Posted February 18, 2014 It's probably the easterly winds at the surface. The radar is hitting the snow higher up, but with the easterlies, it reaches the ground further west than shown. Base velocities are pretty high above about 2500-3000ft on radar too, >40knots. I don't know if it got to you yet MAG but it's pretty awesome Yup its here now, snowing quite hard. It def doesn't look like its going to put down very much though with how thin the line is and how rapidly it's moving. Amount won't matter with respect to impacts on the roads though, as it will ice them up quick. Not one to use the B word (Bust) early in the game but I'm not very impressed with the radar currently. There's some more precip arriving in Pittsburgh behind this initial burst so we'll see. Link to comment Share on other sites More sharing options...
Mallow Posted February 18, 2014 Share Posted February 18, 2014 I can hear sleet pinging off the windows mixing in here with the snow. Could it be graupel rather than sleet? There are some convective elements within the band, and convection during snow is sometimes associated with graupel. Link to comment Share on other sites More sharing options...
pirates21 Posted February 18, 2014 Share Posted February 18, 2014 Base velocities are pretty high above about 2500-3000ft on radar too, >40knots. Yup its here now, snowing quite hard. It def doesn't look like its going to put down very much though with how thin the line is and how rapidly it's moving. Amount won't matter with respect to impacts on the roads though, as it will ice them up quick. Not one to use the B word (Bust) early in the game but I'm not very impressed with the radar currently. There's some more precip arriving in Pittsburgh behind this initial burst so we'll see. Yeah looks like SW PA ready to get hit again very soon Link to comment Share on other sites More sharing options...
meteo Posted February 18, 2014 Share Posted February 18, 2014 Could it be graupel rather than sleet? There are some convective elements within the band, and convection during snow is sometimes associated with graupel. I think you are right....I couldn't remember graupel so the first thing came to mind was sleet...Thanks for the correct term. Link to comment Share on other sites More sharing options...
MAG5035 Posted February 18, 2014 Share Posted February 18, 2014 I can hear sleet pinging off the windows mixing in here with the snow. Just stepped outside, it's definitely a "loud" snow here... I can hear it hitting the trees and etc. The flakes seem rimed a bit. It's piling up better than I thought it was going to though.. about 3/4 of an inch with a little bit left to go with this first burst. Link to comment Share on other sites More sharing options...
Mallow Posted February 18, 2014 Share Posted February 18, 2014 Just stepped outside, it's definitely a "loud" snow here... I can hear it hitting the trees and etc. The flakes seem rimed a bit. It's piling up better than I thought it was going to though.. about 3/4 of an inch with a little bit left to go with this first burst. Keep in mind that just as it started later than the radar indicated, it'll likely last 10-20 minutes after the echoes have passed you as well. So really you're only just past halfway done. You'll probably end up with 1.25" or so, I'm guessing. Link to comment Share on other sites More sharing options...
Mallow Posted February 18, 2014 Share Posted February 18, 2014 Of course, it's definitely falling apart/weakening for us here in State College... Link to comment Share on other sites More sharing options...
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