CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 21 today, time for some legal beer Happy Birthday man. Enjoy! I got kicked out of the bar on my 21st. Link to comment Share on other sites More sharing options...
Ginx snewx Posted April 23, 2012 Author Share Posted April 23, 2012 Dumping http://trafficland.com/city/AOO/index.html Link to comment Share on other sites More sharing options...
Damage In Tolland Posted April 23, 2012 Share Posted April 23, 2012 Time to move on from our typical spring storm..nice to get some rain....Looks like we go back to dry and boring for the next 10 and warm it up days 8-10 Link to comment Share on other sites More sharing options...
weathafella Posted April 23, 2012 Share Posted April 23, 2012 21 today, time for some legal beer Hapoy bday Jay! Link to comment Share on other sites More sharing options...
tamarack Posted April 23, 2012 Share Posted April 23, 2012 Nice steady light/mod RA since 5P yesterday IMBY, for 1.2" added to the tiny bit from the CF Sat night. Radar has a few more nice patches upstream, so a total near 2" seems likely, nice job of steering between not enough and too much. 7A temp was only 34 at my place, and 32-33 at 5A, but no signs of any slush/IP. Cocorahs report from 8 miles west and 300' higher had 0.1" SN/IP. Not as many folks in Maine live above 1,500' (most are in/near Rangeley) as in VT/NH, but I imagine their ground is white this morning. Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 Pouring here. Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 Couple more chances of shwrs. Maybe a few low top tstms Wednesday. Link to comment Share on other sites More sharing options...
Ginx snewx Posted April 23, 2012 Author Share Posted April 23, 2012 Pouring here. Dual pol showing Graupel in that heavy band, intense lift. Lightning? Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 Dual pol showing Graupel in that heavy band, intense lift. Lightning? Maybe, but seems a little weird for that whole area to be graupel when so close to the beam. CC doesn't really show anything...could just be +RA. Link to comment Share on other sites More sharing options...
Collinsville Posted April 23, 2012 Share Posted April 23, 2012 2.80" here from noon to 7 AM Link to comment Share on other sites More sharing options...
Ginx snewx Posted April 23, 2012 Author Share Posted April 23, 2012 Cold on the Euro is impressive end of the week. Link to comment Share on other sites More sharing options...
radarman Posted April 23, 2012 Share Posted April 23, 2012 1.83" on the UMass gauge since 00z Sunday which brings us up to 1.96" for the month of April Link to comment Share on other sites More sharing options...
HIPPYVALLEY Posted April 23, 2012 Share Posted April 23, 2012 21 today, time for some legal beer Happy Birthday Jay! Buy yourself something tasty to drink! Link to comment Share on other sites More sharing options...
HIPPYVALLEY Posted April 23, 2012 Share Posted April 23, 2012 1.83" on the UMass gauge since 00z Sunday which brings us up to 1.96" for the month of April Yeah only 1.9" here in Greenfield since yesterday. Valley underperformed. Better rain was E & W of here. Link to comment Share on other sites More sharing options...
ChrisM Posted April 23, 2012 Share Posted April 23, 2012 Jay Peak got snow. Link to comment Share on other sites More sharing options...
radarman Posted April 23, 2012 Share Posted April 23, 2012 Maybe, but seems a little weird for that whole area to be graupel when so close to the beam. CC doesn't really show anything...could just be +RA. Yeah it seems unlikely that's graupel. One of the big problem with hydrometeor classification using dual pol parameters with horizontal scanning radars is that there is significant overlap in the ranges of different precip types. If you have a bayesian inferencing (or neural networking) component of your algorithm that ingests non-radar sensor data for situational awareness you can do a lot better job in the regions where it's unclear. But for my money if you want accurate precip classification using only radar data you really need vertical scans. Of course the huge drawback there is you only are classifying it in a single location, right over the radar. Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 Yeah it seems unlikely that's graupel. One of the big problem with hydrometeor classification using dual pol parameters with horizontal scanning radars is that there is significan overlap in the ranges of different precip types. If you have a bayesian inferencing (or neural networking) component of your algorithm that ingests non-radar sensor data for situational awareness you can do a lot better job in the regions where it's unclear. But for my money if you want accurate precip classification using only radar data you really need vertical scans. Of course the huge drawback there is you only are classifying it in a single location, right over the radar. Yeah and you can always cross check it too with different parameters which is nice. Should be cool to use this summer with tstms and hail cores. Link to comment Share on other sites More sharing options...
Mr Torchey Posted April 23, 2012 Share Posted April 23, 2012 nice rains, wind was never an issue or very much fun, and actually went south instead of the forecasted east here. Warm and humid out there right now, rains done..........now the pinwheel of pain, low 60s all week with breaks of sun. Is it ever going to get below normal..........EVER? KFS is gonna rock you biatch Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 nice rains, wind was never an issue or very much fun, and actually went south instead of the forecasted east here. Warm and humid out there right now, rains done..........now the pinwheel of pain, low 60s all week with breaks of sun. Is it ever going to get below normal..........EVER? KFS is gonna rock you biatch Sure has rocked lately. Dry begets dry. Link to comment Share on other sites More sharing options...
Mr Torchey Posted April 23, 2012 Share Posted April 23, 2012 Sure has rocked lately. Dry begets dry. whats a measly 3-4 inches of rain? Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 Ginx tropical sheet rains here. Quite muggy. Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 whats a measly 3-4 inches of rain? Well worth it. Probably a couple of more chances of some rain in the next 7-10 days. Link to comment Share on other sites More sharing options...
Mr Torchey Posted April 23, 2012 Share Posted April 23, 2012 sneaky scooter warm day ahead here, have a great day everyone! Link to comment Share on other sites More sharing options...
Ginx snewx Posted April 23, 2012 Author Share Posted April 23, 2012 Yeah it seems unlikely that's graupel. One of the big problem with hydrometeor classification using dual pol parameters with horizontal scanning radars is that there is significant overlap in the ranges of different precip types. If you have a bayesian inferencing (or neural networking) component of your algorithm that ingests non-radar sensor data for situational awareness you can do a lot better job in the regions where it's unclear. But for my money if you want accurate precip classification using only radar data you really need vertical scans. Of course the huge drawback there is you only are classifying it in a single location, right over the radar. What were the scans of differential showing at the same time, maybe small hail? Link to comment Share on other sites More sharing options...
MaineJayhawk Posted April 23, 2012 Share Posted April 23, 2012 2.49" (so far) at PWM since midnight is a new daily record. 3.04" and counting for storm total. No sneaky Scooter warmth here ... 45F on Casco Bay. Link to comment Share on other sites More sharing options...
CoastalWx Posted April 23, 2012 Share Posted April 23, 2012 Gusted to 41kts here last night. Pretty impressive. Link to comment Share on other sites More sharing options...
dryslot Posted April 23, 2012 Share Posted April 23, 2012 21 today, time for some legal beer Remember, Its 21 beers or 21 shots, Your choice..............lol Happy B-day Jay Link to comment Share on other sites More sharing options...
dryslot Posted April 23, 2012 Share Posted April 23, 2012 Been steady +RN with times of ++, Have not checked the gauge but when i looked before leaving for work i could see a least a 3/4" in the base so we should be well over 2" here an counting Link to comment Share on other sites More sharing options...
radarman Posted April 23, 2012 Share Posted April 23, 2012 What were the scans of differential showing at the same time, maybe small hail? I didn't see the raw display, however my guess is that some combination of fairly high Z and fairly low ZDR led to a faulty classification, and that it was most likely rain. One would expect fairly weak updrafts as compared with a typical thunderstorm which would normally produce that level of reflectivity. Therefore the droplets, while dense, are not particularly large, and take on a more spherical shape than the oblate "pancake" shape associated with T-Storms. Spherical droplets have lower ZDR, as does hail or graupel. Both of these may or may not actually be spheres, but they tumble in the atmosphere, so at any given moment the ratio of the Zh/Zv tends toward 1:1. So when I mention overlap, you have a table of Z & ZDR, and possibly CC as well, and with the values shown it could really be either rain or graupel, but when you consider the nature of the weather system, the temp profiles, etc., you'd probably lean toward rain. Link to comment Share on other sites More sharing options...
Ginx snewx Posted April 23, 2012 Author Share Posted April 23, 2012 I didn't see the raw display, however my guess is that some combination of fairly high Z and fairly low ZDR led to a faulty classification, and that it was most likely rain. One would expect fairly weak updrafts as compared with a typical thunderstorm which would normally produce that level of reflectivity. Therefore the droplets, while dense, are not particularly large, and take on a more spherical shape than the oblate "pancake" shape associated with T-Storms. Spherical droplets have lower ZDR, as does hail or graupel. Both of these may or may not actually be spheres, but they tumble in the atmosphere, so at any given moment the ratio of the Zh/Zv tends toward 1:1. So when I mention overlap, you have a table of Z & ZDR, and possibly CC as well, and with the values shown it could really be either rain or graupel, but when you consider the nature of the weather system, the temp profiles, etc., you'd probably lean toward rain. Thanks, last night I was wondering if we got a secondary popping along CC that headed past Boston into Maine, looks like it did, sort of a similar setup to the 2010 storm when NYC was dumping snow while all of NE was rain. That storm spawned a vicious secondary meso that caused huge wind damage. Cool look to the visible Link to comment Share on other sites More sharing options...
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