MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 NAM hr 27...snow everywhere...good CAD. Snow moves in Sunday eve vs Mon AM Hmmm... instantweathermap doesn't have snow until 30 hrs. Wow, the CAD is pretty impressive on this run. Look very cold at the surface on Monday. Link to comment Share on other sites More sharing options...
ers-wxman1 Posted February 14, 2016 Share Posted February 14, 2016 Hmmm... instantweathermap doesn't have snow until 30 hrs. I'm looking at 12km nam on TT Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 Through 34 hrs we look like we have 1-2" on the ground. Light snow throughout the morning monday. heavier snow still farther south. surface temperatures are very cold.... intense CAD with sfc temperatures in the low 20s. This might be a really nice run. too bad its the NAM I'm looking at 12km nam on TT Those maps are probably better so I trust yours. Link to comment Share on other sites More sharing options...
yoda Posted February 14, 2016 Share Posted February 14, 2016 12km NAM has a 1036 H in NH at 33... which is why its so cold Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 12km NAM has a 1036 H in NH at 33... which is why its so cold Yeah the surface is really cold... could show some significant ice on this run. Looks like we get a good snow thump too. Link to comment Share on other sites More sharing options...
gymengineer Posted February 14, 2016 Share Posted February 14, 2016 I'm looking at 12km nam on TT Just FYI-- the radar product is composite. The measurable precip moves in later on TT (total accumulated product). Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 Looks like at 36 hours the moderate snow moves in. Surface temps still in the low 20s. Link to comment Share on other sites More sharing options...
high risk Posted February 14, 2016 Share Posted February 14, 2016 you're looking simulated composite reflectivity, and they apply some "brighter" colors to relatively low values. need to look at precip which implies an arrival in DC around 9z Monday I'm looking at 12km nam on TT Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 Nevermind. At 15z Monday, its snowing moderately. Surface temperatures in the mid 20s. Link to comment Share on other sites More sharing options...
Disc Posted February 14, 2016 Share Posted February 14, 2016 I think the NAM is stuck NAM always stops at 36 hours once it goes to 3 hour intervals. Link to comment Share on other sites More sharing options...
ers-wxman1 Posted February 14, 2016 Share Posted February 14, 2016 It's pretty cold through 36 Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 NAM always stops at 36 hours once it goes to 3 hour intervals. yeah, just as I posted it I F5'd and boom... Thanks for that, I had never realized! Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 And at 18z Monday, we dryslot. Looks like 2-4" before. Highest precipitation amounts in South/Central VA. Hr 45, its 31 degree ice. CAD even more prominent this run. Good thing is it looks like it keeps the N/W burbs so cold, that they stay snow. DC gets some iciness. Link to comment Share on other sites More sharing options...
ers-wxman1 Posted February 14, 2016 Share Posted February 14, 2016 NAM is ice from 95 and west between 21 and 00z Tue Link to comment Share on other sites More sharing options...
ers-wxman1 Posted February 14, 2016 Share Posted February 14, 2016 Just FYI-- the radar product is composite. The measurable precip moves in later on TT (total accumulated product). Yes. Composite. Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 NAM is ice from 95 and west between 21 and 00z Tue It even looks icy into 06z... with lows tonight in the single digits I would hazard that any rain falling even a little above freezing onto a snowpack would freeze. Link to comment Share on other sites More sharing options...
clskinsfan Posted February 14, 2016 Share Posted February 14, 2016 The way the HP jumps around on the NAM is funky. And it doesnt have a whole lot of juice. Link to comment Share on other sites More sharing options...
NinjaWarrior2 Posted February 14, 2016 Share Posted February 14, 2016 NAM made a move toward the globals in the terms of being warmer to the east. Definitely warmer Tuesday 12z, 5C line through Charles County into maybe SE Anne Arundel vs just east of Cambridge on 18z. DC proper is 36 and everyone west is mid 30s. Link to comment Share on other sites More sharing options...
WinterWxLuvr Posted February 14, 2016 Share Posted February 14, 2016 The NAM is really wet out here. Looks like about 0.1 in the first 24 hours. Can't imagine how plows will keep up. Link to comment Share on other sites More sharing options...
kurtstack Posted February 14, 2016 Share Posted February 14, 2016 its a good nam run for the front thump. a solid 3-4" in dca before thermal profiles start to waiver up above. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
ers-wxman1 Posted February 14, 2016 Share Posted February 14, 2016 NAM made a move toward the globals in the terms of being warmer to the east. Definitely especially 95 and east Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 It looks like snow 06z-18z Monday, then Ice N/W from 18z to 06z, then cold rain everywhere. Link to comment Share on other sites More sharing options...
WinterWxLuvr Posted February 14, 2016 Share Posted February 14, 2016 Oops, my bad. It's more like 0.2" Link to comment Share on other sites More sharing options...
MacintoshPro Posted February 14, 2016 Share Posted February 14, 2016 Definitely especially 95 and east Its colder Monday night into early Tuesday, but scours out the cold air good enough Tuesday morning for some nice 35 degree rain. Link to comment Share on other sites More sharing options...
clskinsfan Posted February 14, 2016 Share Posted February 14, 2016 Oops, my bad. It's more like 0.2" Yeah. It sucks for us. No doubt. Link to comment Share on other sites More sharing options...
aldie 22 Posted February 14, 2016 Share Posted February 14, 2016 Oops, my bad. It's more like 0.2" You will have better ratios Link to comment Share on other sites More sharing options...
EastCoast NPZ Posted February 14, 2016 Share Posted February 14, 2016 Oops, my bad. It's more like 0.2" PUMMELLED Link to comment Share on other sites More sharing options...
Ltrain Posted February 14, 2016 Share Posted February 14, 2016 NAM doesn't flip me over to ice until 21z Monday. That is colder than the globals and probably wrong. I was thinking more like 18z after a 1-3" snowfall. Link to comment Share on other sites More sharing options...
eurojosh Posted February 14, 2016 Share Posted February 14, 2016 4k is still like 4-5" per tt prior to the flip. Eta: for dc Link to comment Share on other sites More sharing options...
Bob Chill Posted February 14, 2016 Share Posted February 14, 2016 4k is still like 4-5" per tt prior to the flip. Eta: for dc 4k looks pretty good. We get into the tongue of good precip prior to the flip. I'd be thrilled if it has the right idea. Link to comment Share on other sites More sharing options...
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