Disc Posted December 9, 2013 Share Posted December 9, 2013 Still 100% sleet falling here with the new batch of moisture moving in. Blacksburg was supposed to do a 18z sounding, anyone got it?? Link to comment Share on other sites More sharing options...
Amped Posted December 9, 2013 Share Posted December 9, 2013 So it feels good to know we are ahead of CTblizz for 2013-2014. Link to comment Share on other sites More sharing options...
needbiggerboat Posted December 9, 2013 Share Posted December 9, 2013 28.4 Up .6 from 6pm Frz drizzle Link to comment Share on other sites More sharing options...
Amped Posted December 9, 2013 Share Posted December 9, 2013 Here this is a little easier to see. Most of us aren't going above 32f any time soon. Link to comment Share on other sites More sharing options...
CoastalWx Posted December 9, 2013 Share Posted December 9, 2013 So I went back and looked and a few thing stand out, but really nothing to think 8-9". Here is 00z last night. Notice the strong lift progged at 700mb. That is a red flag. However notice the 850-500 RH and VV progs. Not as pronounced through this level and too warm (classic GFS) but there is a hint at good lift through a saturated layer. Also notice 700mb winds. Notice the strong 700mb jet pushing into DC. That is helping with the frontogenesis...you have convergence with a stronger H7 jet pushing in. Notice also the good 850mb LLJ is way south. This is more classic mid level fronto and not necessarily LLJ convergence at 850mb. Also notice the nice thermal ribbon at this level. This is certainly a strong gradient at H7 which will cause the atmosphere to induce a frontogenic circulatio to restore thermal balance. Also notice a good H3 jet. This is a decent entrance region of the jet and virtually all the fun happens at the entrance region of jet streaks in the winter. The reason is that the divergence at the entrance region will help to allow the low level jet to rise in an isentropic fashion to fill the void left by divergence at 300mb. Now look at the prog today from the 12z GFS valid at 15z. aqnd 18z. Much colder and more robust with the 850-500mb lift. 12z today. Link to comment Share on other sites More sharing options...
wxdude64 Posted December 9, 2013 Share Posted December 9, 2013 Wow, +10 T and DP at 800+ - and sleet? Well, Hot Springs at close to 4000 is 23/23. I'll take it for now. Sleet miles better than glaze. Link to comment Share on other sites More sharing options...
nj2va Posted December 9, 2013 Author Share Posted December 9, 2013 Here this is a little easier to see. Most of us aren't going above 32f any time soon.According to the 22z HRRR, DC still below freezing through 11z (rest of run still coming out). Link to comment Share on other sites More sharing options...
Superstorm93 Posted December 9, 2013 Share Posted December 9, 2013 So it feels good to know we are ahead of CTblizz for 2013-2014. ---- Still freezing drizzle here. Very hard to walk around Link to comment Share on other sites More sharing options...
clskinsfan Posted December 9, 2013 Share Posted December 9, 2013 Thanks for the great post! You can really see where the megaband set up. Its funny how it always seems to set up from about Winchester to North of Baltimore. Link to comment Share on other sites More sharing options...
MN Transplant Posted December 9, 2013 Share Posted December 9, 2013 Link to comment Share on other sites More sharing options...
yoda Posted December 9, 2013 Share Posted December 9, 2013 Yeah... its not 34 here in Springfield... more like 29 Link to comment Share on other sites More sharing options...
Superstorm93 Posted December 9, 2013 Share Posted December 9, 2013 I don't know this sub-form too well, but I really hope you guys wouldn't stay up for a 35+ dBZ FZRA blob... HRRR @ 5z Link to comment Share on other sites More sharing options...
nj2va Posted December 9, 2013 Author Share Posted December 9, 2013 According to the 22z HRRR, DC still below freezing through 11z (rest of run still coming out). DCA hits 32 at 12z. That would be a pretty significant ice storm if those temps are accurate. Link to comment Share on other sites More sharing options...
MN Transplant Posted December 9, 2013 Share Posted December 9, 2013 Yeah... its not 34 here in Springfield... more like 29 Yeah, there's always somebody that has it sited wrong. Link to comment Share on other sites More sharing options...
BTRWx Posted December 9, 2013 Share Posted December 9, 2013 Yeah... its not 34 here in Springfield... more like 29 I'm right near that 34 reading, but sitting at 30. Link to comment Share on other sites More sharing options...
aldie 22 Posted December 9, 2013 Share Posted December 9, 2013 I don't know this sub-form too well, but I really hope you guys wouldn't stay up for a 35+ dBZ FZRA blob... HRRR @ 5z grearth 2013-12-08 19-23-05-62.png grearth 2013-12-08 19-23-14-50.png Lol...whew..spared Link to comment Share on other sites More sharing options...
weathafella Posted December 9, 2013 Share Posted December 9, 2013 Folks, what a great day you had today! 1/25/00 esque? Link to comment Share on other sites More sharing options...
mupawxnut Posted December 9, 2013 Share Posted December 9, 2013 temps.JPG Where the heck did that 36 just northwest of Laurel come from? Link to comment Share on other sites More sharing options...
Disc Posted December 9, 2013 Share Posted December 9, 2013 It has begun. 30.3* with steady ZR. Link to comment Share on other sites More sharing options...
Jebman Posted December 9, 2013 Share Posted December 9, 2013 One more degree and I can chuckle at those mountain valleys. Most of the time I hate where I live because I am so damn close to the Potomac and relatively mild conditions. This time tho I am exuberantly happy. A half inch or more of ice is no fun at all, especially on powerlines and on tree limbs. I might rise above freezing well before midnight. I am so happy about it I want to shout it from the housetops The cleared road has good water reflectivity, meaning that it is only wet, no ice at all on the road by my house. Ice and slush look very different. This is the reflectivity of the road from rain in the summer. Link to comment Share on other sites More sharing options...
mupawxnut Posted December 9, 2013 Share Posted December 9, 2013 I don't know this sub-form too well, but I really hope you guys wouldn't stay up for a 35+ dBZ FZRA blob... HRRR @ 5z grearth 2013-12-08 19-23-05-62.png grearth 2013-12-08 19-23-14-50.png Superstorm93, can you explain this diagram a little bit? Link to comment Share on other sites More sharing options...
MN Transplant Posted December 9, 2013 Share Posted December 9, 2013 Where the heck did that 36 just northwest of Laurel come from? Somebody who put their weather station next to the dryer exhaust. You just have to look at the map in totality and not dwell on the outliers. Link to comment Share on other sites More sharing options...
MillvilleWx Posted December 9, 2013 Share Posted December 9, 2013 Currently at 27.7 in Carney, MD Gonna be a long night Link to comment Share on other sites More sharing options...
Superstorm93 Posted December 9, 2013 Share Posted December 9, 2013 Superstorm93, can you explain this diagram a little bit? Top panel is the simulated reflectivity. Bottom panel is expected P-type (Pink being freezing rain, in this case heavy freezing rain for some folks) Link to comment Share on other sites More sharing options...
snowdude Posted December 9, 2013 Share Posted December 9, 2013 One more degree and I can chuckle at those mountain valleys. Most of the time I hate where I live because I am so damn close to the Potomac and relatively mild conditions. This time tho I am exuberantly happy. A half inch or more of ice is no fun at all, especially on powerlines and on tree limbs. I might rise above freezing well before midnight. I am so happy about it I want to shout it from the housetops Hate to break it to you but Dale City will likely be at or below freezing tonight Link to comment Share on other sites More sharing options...
BTRWx Posted December 9, 2013 Share Posted December 9, 2013 Yeah, that 34 seemed out of place lol. The latest wundermap obs show inside beltway temps ranging from upper 20's to a maximum 32 south of D.C., so maybe that reading was recently corrected. Link to comment Share on other sites More sharing options...
wxdude64 Posted December 9, 2013 Share Posted December 9, 2013 Somebody who put their weather station next to the dryer exhaust. You just have to look at the map in totality and not dwell on the outliers. Or got their thermometer placement instructions from DCA Link to comment Share on other sites More sharing options...
snow. Posted December 9, 2013 Share Posted December 9, 2013 Folks, what a great day you had today! 1/25/00 esque? I think for the far NW DC burbs up through NE MD...yes...epic for them...basically a 6-10" surprise...i don;t hink anyone was thinking more than 3"...for me, I got what I expected as did most of immediate DC metro..but fun event for early dec Link to comment Share on other sites More sharing options...
wxmeddler Posted December 9, 2013 Share Posted December 9, 2013 Plow just came by... just in time for freezing drizzle/ rain. Wonderful. No traction tomorrow for me! Link to comment Share on other sites More sharing options...
yoda Posted December 9, 2013 Share Posted December 9, 2013 5z is midnight... so some of us will still be up to watch that outside... Link to comment Share on other sites More sharing options...
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