RevWarReenactor Posted January 11, 2011 Share Posted January 11, 2011 @Mdecoy Radar pulses do not travel parallel to the ground, they travel at an angle and therefore they increase in height with distance away from the radar. Therefore, especially in areas far from the radar the pulse can pick up on precipitation higher up in the boundary layer that might be evaporating before it reaches the ground (virga). The closer you are to the radar site, the less likely you are to deal with this effect, but the radar most certainly picks up precip that is not actually hitting the ground. Ok, that makes total sense. In NJ I am VERY close to the radar site (maybe 5 miles). So that would explain why it works well for me. Link to comment Share on other sites More sharing options...
BaltimoreWxGuy Posted January 11, 2011 Share Posted January 11, 2011 LWX has updated their zones twice in one hour they went up to 3-5 now down to 2-4....for my area anyway lol...guess they put too much stock into 6z NAM Link to comment Share on other sites More sharing options...
vinylfreak89 Posted January 11, 2011 Share Posted January 11, 2011 Hmmm, well the NWS radar out of NJ has NEVER once failed me in the 10 years I've looked at it. If precip is over us, its falling. If not, it isn't. Maybe it's different down here. depends how far you are away from the radar site as the beam tilts up... if you're within 20 -30 miles or so (usually where the "hole" appears) then its pretty accurate Link to comment Share on other sites More sharing options...
yoda Posted January 11, 2011 Share Posted January 11, 2011 they went up to 3-5 now down to 2-4....for my area anyway lol...guess they put too much stock into 6z NAM AA went from 3-5 to one inch Link to comment Share on other sites More sharing options...
RevWarReenactor Posted January 11, 2011 Share Posted January 11, 2011 depends how far you are away from the radar site as the beam tilts up... if you're within 20 -30 miles or so (usually where the "hole" appears) then its pretty accurate Makes sense now. I am very close to the radar site. Link to comment Share on other sites More sharing options...
BaltimoreWxGuy Posted January 11, 2011 Share Posted January 11, 2011 AA went from 3-5 to one inch OUCH better start because you wont be able to with that Link to comment Share on other sites More sharing options...
Ian Posted January 11, 2011 Share Posted January 11, 2011 is that map auto generated? you can still pull up one with a timestamp just after 9 that's vastly different Link to comment Share on other sites More sharing options...
SnowJoe Posted January 11, 2011 Share Posted January 11, 2011 Talk about waffling.... It's almost embarrassing. Link to comment Share on other sites More sharing options...
Yorkpa25 Posted January 11, 2011 Share Posted January 11, 2011 12gfs will come in even drier. If possible Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted January 11, 2011 Share Posted January 11, 2011 AA went from 3-5 to one inch All schools will dismiss 2 hours early due to the forecast for snow. Link to comment Share on other sites More sharing options...
Ian Posted January 11, 2011 Share Posted January 11, 2011 Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted January 11, 2011 Share Posted January 11, 2011 That's too funny! Link to comment Share on other sites More sharing options...
BaltimoreWxGuy Posted January 11, 2011 Share Posted January 11, 2011 downgraded this as well...NWS is being erratic. http://www.erh.noaa....wx/winterstorm/ Link to comment Share on other sites More sharing options...
yoda Posted January 11, 2011 Share Posted January 11, 2011 *images* Guess someone bought the 06z NAM.. then was like oh snap and bought the 12z NAM Link to comment Share on other sites More sharing options...
BaltimoreWxGuy Posted January 11, 2011 Share Posted January 11, 2011 All schools will dismiss 2 hours early due to the forecast for snow. How stupid, I swear, school systems dont have a clue. Link to comment Share on other sites More sharing options...
TUweathermanDD Posted January 11, 2011 Share Posted January 11, 2011 downgraded this as well...NWS is being erratic. http://www.erh.noaa....wx/winterstorm/ With an overnight snow, I don't scare. Nothing really caused that, 3-5 I'm holding. If I'm wrong, it happens. Haven't been Doing bad at all lately Link to comment Share on other sites More sharing options...
Ian Posted January 11, 2011 Share Posted January 11, 2011 That's too funny! just makes me wonder if it's auto.. i dunno why they would make such big changes in 50 minutes. maybe it was an old map with a new stamp prior? Link to comment Share on other sites More sharing options...
wxmeddler Posted January 11, 2011 Share Posted January 11, 2011 pretty obvious where that coastal low is sitting... Link to comment Share on other sites More sharing options...
BaltimoreWxGuy Posted January 11, 2011 Share Posted January 11, 2011 With an overnight snow, I don't scare. Nothing really caused that, 3-5 I'm holding. If I'm wrong, it happens. Haven't been Doing bad at all lately Well Ive been going with 2-5 since Saturday, so theres really no reason to change that. Link to comment Share on other sites More sharing options...
SnowJoe Posted January 11, 2011 Share Posted January 11, 2011 just makes me wonder if it's auto.. i dunno why they would make such big changes in 50 minutes. maybe it was an old map with a new stamp prior? Well they also went from 3-5 to 1-3 in their text forecast here. Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted January 11, 2011 Share Posted January 11, 2011 just makes me wonder if it's auto.. i dunno why they would make such big changes in 50 minutes. maybe it was an old map with a new stamp prior? Yeah, it does seem like it would be auto because it is quick to do the map with all those changes. Link to comment Share on other sites More sharing options...
yoda Posted January 11, 2011 Share Posted January 11, 2011 FWIW 12z RGEM at 00z tonight -- http://www.weatheroffice.gc.ca/data/model_forecast/colour_images/12_054_R1_north@america_I_4PAN_CLASSIC@012_012.jpg Link to comment Share on other sites More sharing options...
Ian Posted January 11, 2011 Share Posted January 11, 2011 Well they also went from 3-5 to 1-3 in their text forecast here. yeah i see the lowering in the zones Link to comment Share on other sites More sharing options...
mappy Posted January 11, 2011 Share Posted January 11, 2011 Well they also went from 3-5 to 1-3 in their text forecast here. I don't know why you are guys are worrying so much. Geesh people just let the damn snow fall and be happy with what you get. Link to comment Share on other sites More sharing options...
The Colonel Posted January 11, 2011 Share Posted January 11, 2011 This place has turned into a mutiny Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted January 11, 2011 Share Posted January 11, 2011 How stupid, I swear, school systems dont have a clue. The school systems are just too cautious today. Link to comment Share on other sites More sharing options...
yoda Posted January 11, 2011 Share Posted January 11, 2011 http://www.wusa9.com/weather/severe_weather/cancellations_closings/default.aspx Link to comment Share on other sites More sharing options...
mdsnowlover Posted January 11, 2011 Share Posted January 11, 2011 The school systems are just too cautious today. have you ever driven a school bus on snowy roads???. I have . Until then dont say their too cautious!!!!~ Link to comment Share on other sites More sharing options...
aldie 22 Posted January 11, 2011 Share Posted January 11, 2011 12gfs will come in even drier. If possible What are you doing Link to comment Share on other sites More sharing options...
stormtracker Posted January 11, 2011 Share Posted January 11, 2011 None of us are as funny or humorous as we think we are....FYI Man, The Grouch from Leesburg has arrived. Do you need me to come out there? Link to comment Share on other sites More sharing options...
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