Holston_River_Rambler Posted February 20, 2020 Author Share Posted February 20, 2020 HRRR and RAP seem to think rates will jump pretty dramatically: Not really sure what the HRRR is smoking, but would be nice to get under those 30 dbz returns for a few more hours. Link to comment Share on other sites More sharing options...
John1122 Posted February 20, 2020 Share Posted February 20, 2020 Oak Ridge is reporting heavy snow with 1/4th mile vis, hope they are getting some accumulation out of it for our posters from that area. 1.75 inches here now, it's snowing around 3/4ths inch per hour rates on average but it's more 1.5 inch per hour then when it backs off it's compacting and melting from below about as fast as it can fall. I wish we'd managed a day in the 20s before this moved in instead of a day in the 50s. 1 Link to comment Share on other sites More sharing options...
John1122 Posted February 20, 2020 Share Posted February 20, 2020 1 minute ago, Holston_River_Rambler said: HRRR and RAP seem to think rates will jump pretty dramatically: Not really sure what the HRRR is smoking, but would be nice to get under those 30 dbz returns for a few more hours. Thse 35dbz rates would be close to 1.75 inch per hour rates I believe. Link to comment Share on other sites More sharing options...
Jed33 Posted February 20, 2020 Share Posted February 20, 2020 Snowing pretty heavy still maybe not quite as heavy as before at the moment, but looks like we have somewhere between 1/3-1/2in on the grass now. Link to comment Share on other sites More sharing options...
TellicoWx Posted February 20, 2020 Share Posted February 20, 2020 Moderate snow in Madisonville now Link to comment Share on other sites More sharing options...
McMinnWx Posted February 20, 2020 Share Posted February 20, 2020 Mixing in Athens. Temp has dropped two degrees in the last thirty minutes. Link to comment Share on other sites More sharing options...
Shocker0 Posted February 20, 2020 Share Posted February 20, 2020 We have around 3 inches here. It seems to already want to be melting off the roads some and gravel areas now, and I doubt we are going to get much more at this point other than just the lighter stuff. It's definitely a beautiful snow though. 4 1 Link to comment Share on other sites More sharing options...
PowellVolz Posted February 20, 2020 Share Posted February 20, 2020 HRRR and RAP seem to think rates will jump pretty dramatically: Not really sure what the HRRR is smoking, but would be nice to get under those 30 dbz returns for a few more hours. That would add up fast, even at suspect temps . Link to comment Share on other sites More sharing options...
Holston_River_Rambler Posted February 20, 2020 Author Share Posted February 20, 2020 1 minute ago, PowellVolz said: That would add up fast, even at suspect temps yeah, even starting to get some of the bigger flakes mixed in again here. I'm just not sure what on earth it's seeing to make rates jump like that. Would be awesome though! Link to comment Share on other sites More sharing options...
Holston_River_Rambler Posted February 20, 2020 Author Share Posted February 20, 2020 At the very end of the loop its almost like there is a faint lurch with the system to try and send some more moisture at E TN, but I could also just be seeing things: Link to comment Share on other sites More sharing options...
McMinnWx Posted February 20, 2020 Share Posted February 20, 2020 All snow in Athens. Big flakes! 2 Link to comment Share on other sites More sharing options...
tnwxwatcher Posted February 20, 2020 Share Posted February 20, 2020 All snow at TYS airport. Steady and temp has now ticked to 32°Sent from my SM-G965U using Tapatalk 1 Link to comment Share on other sites More sharing options...
TellicoWx Posted February 20, 2020 Share Posted February 20, 2020 Ground white and edges of side roads starting to whiten in Sweetwater 1 Link to comment Share on other sites More sharing options...
Math/Met Posted February 20, 2020 Share Posted February 20, 2020 The Greeneville airport is down to 32 and reporting .25 visibility. 1 Link to comment Share on other sites More sharing options...
John1122 Posted February 20, 2020 Share Posted February 20, 2020 Been rolling down here for the last hour. Crossing 2 inches. Seems like it's been forever to have big heavy flakes falling all day. 3 Link to comment Share on other sites More sharing options...
McMinnWx Posted February 20, 2020 Share Posted February 20, 2020 No idea how accurate, but my Jeep says it’s 32 here. Link to comment Share on other sites More sharing options...
Holston_River_Rambler Posted February 20, 2020 Author Share Posted February 20, 2020 Maybe the HRRR and RAP just see more of the frontogenesis that the NAM is showing to a lesser extent as the day wears on? 2 Link to comment Share on other sites More sharing options...
nrgjeff Posted February 20, 2020 Share Posted February 20, 2020 Yes new lift is coming out of the Mid South. One can deduce it on both satellite and radar trends. It's back of the cloud band, not morally ideal, but it's bullish this time. GSP NWS put out a late morning AFD that explains this upper feature. Of course they talk about sensible weather their CWA. However their discussion of a new baroclinic leaf coming out of the Mid South is quite relevant to our Region. Also the subtle surface wave has formed in South Georgia. Surface winds should continue to or maintain backing/northerly. KCHA probably still can't be helped, but others will continue to smile this event. Bottom line, I would believe those radar simulations for this afternoon. 1 1 Link to comment Share on other sites More sharing options...
dwagner88 Posted February 20, 2020 Share Posted February 20, 2020 Snow is finally mixing in Cleveland 4 Link to comment Share on other sites More sharing options...
PowellVolz Posted February 20, 2020 Share Posted February 20, 2020 Yes new lift is coming out of the Mid South. One can deduce it on both satellite and radar trends. It's back of the cloud band, not morally ideal, but it's bullish this time. GSP NWS put out a late morning AFD that explains this upper feature. Of course they talk about sensible weather their CWA. However their discussion of a new baroclinic leaf coming out of the Mid South is quite relevant to our Region. Also the subtle surface wave has formed in South Georgia. Surface winds should continue to or maintain backing/northerly. KCHA probably still can't be helped, but others will continue to smile this event. Bottom line, I would believe those radar simulations for this afternoon.“Otherwise, the latest water vapor imagery indicates a speed maxdigging across the Corn Belt, with a baroclinic leaf structureextending from the Arklatx through the Mid-South. Thus, cyclogenesisis well underway in the vicinity of the western Gulf Coast, andresultant increase in frontogenesis and QG forcing will allow theprecip shield. to continue progressing northeast across the CWA.”. 1 1 Link to comment Share on other sites More sharing options...
Dsty2001 Posted February 20, 2020 Share Posted February 20, 2020 Spoke with the wife in Greeneville, said snow is starting to stick on roads and temp has dropped below 32 2 Link to comment Share on other sites More sharing options...
Chattownsnow Posted February 20, 2020 Share Posted February 20, 2020 Rain/snow mixing beginning downtown Chattanooga at work now. 2 1 Link to comment Share on other sites More sharing options...
John1122 Posted February 20, 2020 Share Posted February 20, 2020 Snow has backed off here. 1 Link to comment Share on other sites More sharing options...
dwagner88 Posted February 20, 2020 Share Posted February 20, 2020 Looks like we are mostly snow now in Cleveland, but still far too warm. 37. 1 Link to comment Share on other sites More sharing options...
bearman Posted February 20, 2020 Share Posted February 20, 2020 Here in west knoxville we had about 1 inch at the end of the enhanced line but now most of that has melted off. The rates have to be very aggressive to maintain the temps needed for accumulation. 2 Link to comment Share on other sites More sharing options...
bearman Posted February 20, 2020 Share Posted February 20, 2020 It has picked up a bit in the last few minutes but it is melting faster than accumulation. 1 Link to comment Share on other sites More sharing options...
TellicoWx Posted February 20, 2020 Share Posted February 20, 2020 Looks like the NAM was close of snow amount falling here, but off on surface temp by a degree...no accumlation Link to comment Share on other sites More sharing options...
Math/Met Posted February 20, 2020 Share Posted February 20, 2020 39 minutes ago, Dsty2001 said: Spoke with the wife in Greeneville, said snow is starting to stick on roads and temp has dropped below 32 Obviously accumulations vary depending on the surface with these marginal temps and warm ground, but I have nearly an 1 inch on my car. Still coming down at a decent rate, but it’s having a hard time adding to the accumulation. It takes heavy snow rates to really add to the accumulation. The time of day didn’t help here either. 1 Link to comment Share on other sites More sharing options...
nrgjeff Posted February 20, 2020 Share Posted February 20, 2020 HRRR nailed the stubborn 40 in KCHA. NAM seemed to do better points north and northwest. Euro caught on so late it just gets partial credit. LOL at the GFS. Still rain Chattanooga Central Business District. Still figure it ends light snow (no stick) suburbs and even Chattanooga proper outside the Downtown heat island. That's OK we got ours February 8, that gorgeous Saturday morning. Link to comment Share on other sites More sharing options...
Holston_River_Rambler Posted February 20, 2020 Author Share Posted February 20, 2020 Pretty well winding down in my part of Morgan County. Link to comment Share on other sites More sharing options...
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