BethesdaWX Posted January 18, 2011 Share Posted January 18, 2011 25 and zr now. No sleet and no flakes. Just light zr. Between bands eh? Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted January 18, 2011 Share Posted January 18, 2011 00z NAM soundings IAD 0.25" precip through 12z. 2m temp is 29.3 at 12z. Warms to 38 by 18z... but precip is drizzle (0.01 QPF) after 12z JYO 0.20" precip through 12z. 2m temp is 28.5 at 12z. Warms to 37.7 by 18z... precip over after 12z BWI 0.52 precip through 12z. 2m temp is 32.4 at 12z. Warms to 35.5 by 18z with 0.12 precip after 12z in the form of rain. Not exactly sure when the changeover is... but just after 10z would make sense. EZF 0.28 precip through 12z. 2m temp is 30.8 at 12z. Warms to 40.9 at 18z with 0.02 precip after 12z (likely drizzle) DCA 0.43 precip through 12z. 2m temp is 31.6 at 12z. Warms to 37.2 at 18z with 0.07 precip after 12z (likely light rain). Thank you Yoda for always posting sounding information! Link to comment Share on other sites More sharing options...
WVclimo Posted January 18, 2011 Share Posted January 18, 2011 00z NAM soundings Yoda, can you get HGR or MRB ? Curious to see the QPF. Thanks. Link to comment Share on other sites More sharing options...
Bob Chill Posted January 18, 2011 Share Posted January 18, 2011 Just had to toss in a little Leesburg humor..... Link to comment Share on other sites More sharing options...
SomeguyfromTakomaPark Posted January 18, 2011 Share Posted January 18, 2011 00z NAM soundings IAD 0.25" precip through 12z. 2m temp is 29.3 at 12z. Warms to 38 by 18z... but precip is drizzle (0.01 QPF) after 12z JYO 0.20" precip through 12z. 2m temp is 28.5 at 12z. Warms to 37.7 by 18z... precip over after 12z BWI 0.52 precip through 12z. 2m temp is 32.4 at 12z. Warms to 35.5 by 18z with 0.12 precip after 12z in the form of rain. Not exactly sure when the changeover is... but just after 10z would make sense. EZF 0.28 precip through 12z. 2m temp is 30.8 at 12z. Warms to 40.9 at 18z with 0.02 precip after 12z (likely drizzle) DCA 0.43 precip through 12z. 2m temp is 31.6 at 12z. Warms to 37.2 at 18z with 0.07 precip after 12z (likely light rain). I really hope DCA can stay below freezing for that long....that would be a lot of ice. Link to comment Share on other sites More sharing options...
Kmlwx Posted January 18, 2011 Share Posted January 18, 2011 I really hope DCA can stay below freezing for that long....that would be a lot of ice. Just hope your not on PEPCO then Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted January 18, 2011 Share Posted January 18, 2011 .NEAR TERM /THROUGH TUESDAY/... -- Changed Discussion --PRECIPITATION HAS BEGUN TO OVERSPREAD THE ENTIRE AREA FROM THE SOUTH THIS EVE AS LOPRES QUICKLY ORGANIZES ALONG THE SOUTHEAST COAST. AS EXPECTED...A SOLID SHIELD OF PRECIP HAS QUICKLY FILLED IN ACROSS THE MID-ATLANTIC STATES...ESPECIALLY CLOSER TOWARD THE COAST. WITH ENOUGH COLD AIR IN PLACE AT THE SFC /SUPPLIED BY HIPRES ALONG THE NEW ENGLAND COAST/ AND WARMER AIR A FEW KFT ABOVE THE GROUND THAT IS QUICKLY MOVING IN FROM SE TO NW... THE AREA WILL DEAL WITH A WINTRY MESS THRU THE REST OF TNGT...AND INTO THE AM COMMUTE FOR MANY AREAS ALONG AND WEST OF I-95. A FREEZING RAIN ADVISORY HAS BEEN ISSUED FOR LOWER SRN MD AND KING GEORGE COUNTY AS SOME MESONET OBS SHOW TEMPS IN THE UPPER 20S AND LOW 30S AT THE ONSET OF PRECIP. THE FZRA SHOULD CHANGE TO ALL RAIN IN THESE AREAS BY MIDNIGHT AS TEMPS RISE ABOVE FREEZING. ELSEWHERE...WINTER WX ADVISORY IS IN EFFECT THRU THE MID MRNG FOR AREAS APPROXIMATELY SOUTH OF I-66 AND THRU NOON FOR AREAS TO THE NORTH. WINTER WX ADVISORY WILL LIKELY BE CANCELLED BEFORE THE EXPIRATION TIMES INDICATE ACROSS MANY AREAS ONCE FZRA TRANSITIONS TO RAIN FROM SE TO NW LATE TNGT INTO TUE MRNG. 00Z RAOB SOUNDING AT KIAD SHOWS A THERMAL PROFILE SUPPORTIVE OF ALL SNOW...AND IS SLIGHT COLDER/DRIER THAN MODELS HAD FCSTD AS PRECIP HAD YET TO MOVE INTO THE AREA AT RELEASE. DESPITE THE SLIGHT DIFFERENCES...FCST STILL LOOKS ON TRACK AS ENOUGH WARM AIR HAS ALREADY CHANGED PRECIP OVER TO A WINTRY MIX ALONG I-95 INCLUDING DC. INTRUSION OF MARINE AIR WAS STRONG ENOUGH TO WARM THE ATMOSPHERE ABOVE 0C ALL THE WAY UP TO H8 AT KWAL. FIRST FEW HRS OF PRECIP TO THE N AND W OF I-95 WILL BE SNOW WITH ACCUMULATIONS UP TO AN INCH...BEFORE THE CHANGEOVER TO FZRA OCCURS. PREDOMINANT PRECIP TYPE FROM I-95 SOUTH AND EAST WILL BE FZRA THIS EVE BEFORE THE TRANSITION TO RA OCCURS LATE TNGT/ERY TUE MRNG. THERE WILL BE A TIGHT PRECIP GRADIENT...WITH HIGHER AMOUNTS CLOSER TO THE COAST AND MUCH LIGHTER AMOUNTS WEST OF THE BLUE RIDGE. THE HIGHEST ICE ACCUMULATIONS /UP TO TWO TENTHS OF AN INCH/... AND WORST CONDITIONS WILL LIKELY BE ON THE WRN FRINGE OF THE HEAVIER PRECIP...WHERE SUB-FREEZING SFC TEMPS WILL LIKELY LINGER THRU THE AM RUSH HR COMMUTE. GEOGRAPHICALLY...THIS AREA WILL LIKELY RESIDE ACROSS THE NW SUBURBS OF DC AND BALTIMORE...ESPECIALLY ACROSS CENTRAL MD AND EXTREME NW VA. FROM I-95 SOUTH AND EAST /INCLUDING DC AND BALTIMORE/...ICE ACCUMULATIONS UNDER ONE TENTH OF AN INCH ARE EXPECTED THRU THE ERY MRNG. RAIN WILL TAPER OFF FROM THE SOUTHWEST TO NORTHEAST LATE TUESDAY MORNING INTO TUESDAY AFTERNOON...SO MOST PLACES BY THE AFTERNOON MAY BE DRY BUT IT LOOKS AS IF CLOUDS WILL HANG TOUGH. THE NEXT WAVE WILL APPROACH ON TUESDAY EVENING. TEMPERATURES WILL WARM ABOVE FREEZING FOR HIGH TEMPERATURES ACROSS THE ENTIRE CWA TUESDAY...LIKELY REACHING 40 ACROSS THE SOUTHERN PORTION OF THE CWA.-- End Changed Discussion -- Link to comment Share on other sites More sharing options...
Master of Disaster Posted January 18, 2011 Share Posted January 18, 2011 25 and zr now. No sleet and no flakes. Just light zr. Ehh, here we go!! Link to comment Share on other sites More sharing options...
Kmlwx Posted January 18, 2011 Share Posted January 18, 2011 Ehh, here we go!! I emailed you. In the meantime - light ZR now. Link to comment Share on other sites More sharing options...
yoda Posted January 18, 2011 Share Posted January 18, 2011 Yoda, can you get HGR or MRB ? Curious to see the QPF. Thanks. HGR -- 0.26 QPF all frozen through 12z with 2m temp of 26.5. By 18z, 2m temp is 35.4. However, QPF is done by 12z MRB -- 0.17 QPF all frozen through 12z with 2m temp of 26.6. By 18z, 2m temp is 37.5. However, QPF is done by 12z Link to comment Share on other sites More sharing options...
BethesdaWX Posted January 18, 2011 Share Posted January 18, 2011 THERE WILL BE A TIGHT PRECIP GRADIENT...WITH HIGHER AMOUNTS CLOSER TO THE COAST AND MUCH LIGHTER AMOUNTS WEST OF THE BLUE RIDGE. THE HIGHEST ICE ACCUMULATIONS /UP TO TWO TENTHS OF AN INCH/... AND WORST CONDITIONS WILL LIKELY BE ON THE WRN FRINGE OF THE HEAVIER PRECIP...WHERE SUB-FREEZING SFC TEMPS WILL LIKELY LINGER THRU THE AM RUSH HR COMMUTE. GEOGRAPHICALLY...THIS AREA WILL LIKELY RESIDE ACROSS THE NW SUBURBS OF DC AND BALTIMORE...ESPECIALLY ACROSS CENTRAL MD AND EXTREME NW VA. FROM I-95 SOUTH AND EAST /INCLUDING DC AND BALTIMORE/...ICE ACCUMULATIONS UNDER ONE TENTH OF AN INCH ARE EXPECTED THRU THE ERY MRNG. Raising my inner-weenie hopes! Link to comment Share on other sites More sharing options...
real Posted January 18, 2011 Share Posted January 18, 2011 Back to snow in Northwest DC... I'm thinking the FEDS could have a 2 hour delay tomorrow and Montgomery/Fairfax schools close, just my hunch Link to comment Share on other sites More sharing options...
SomeguyfromTakomaPark Posted January 18, 2011 Share Posted January 18, 2011 snow/sleet mix here. roads/sidewalks icing up quite a bit. Link to comment Share on other sites More sharing options...
Kmlwx Posted January 18, 2011 Share Posted January 18, 2011 Salt trucks just came by. Odd for our dead end street...county isn't even supposed to be in remote neighborhood roads yet. Link to comment Share on other sites More sharing options...
Kmlwx Posted January 18, 2011 Share Posted January 18, 2011 Back to snow in Northwest DC... I'm thinking the FEDS could have a 2 hour delay tomorrow and Montgomery/Fairfax schools close, just my hunch The fact that we already had a county salt truck here (usually it's days before we see one) does not bode well for closures. Link to comment Share on other sites More sharing options...
HiltonHeadWx Posted January 18, 2011 Share Posted January 18, 2011 25 with light snow in Hagerstown as of 10PM. Snow began around 8:30PM and so far 0.5" as it is accumulating quickly on the cold ground - including the streets. Link to comment Share on other sites More sharing options...
WVclimo Posted January 18, 2011 Share Posted January 18, 2011 HGR -- 0.26 QPF all frozen through 12z with 2m temp of 26.5. By 18z, 2m temp is 35.4. However, QPF is done by 12z MRB -- 0.17 QPF all frozen through 12z with 2m temp of 26.6. By 18z, 2m temp is 37.5. However, QPF is done by 12z Thanks, man. Much appreciated. Link to comment Share on other sites More sharing options...
BethesdaWX Posted January 18, 2011 Share Posted January 18, 2011 Temperature still dropping, surprisingly. Meanwhile, Flakes Falling again, about 50/50 snow/graupel mix. Link to comment Share on other sites More sharing options...
kurtstack Posted January 18, 2011 Share Posted January 18, 2011 Back to snow/sleet again here in arlington. Seems like the heavier precip has brought snow back into the mix. Link to comment Share on other sites More sharing options...
psuhoffman Posted January 18, 2011 Share Posted January 18, 2011 still 22 here just reached 1" snow is much lighter now and is getting very icy but still snow. Anyone in that second batch of heavier precip coming from the south still reporting snow? I do not like the look of the radar, that has more of a rain signature then snow/sleet. Link to comment Share on other sites More sharing options...
Dalfy Posted January 18, 2011 Share Posted January 18, 2011 snow and graupel outside. Link to comment Share on other sites More sharing options...
BethesdaWX Posted January 18, 2011 Share Posted January 18, 2011 Wow, 45dbz showing up in NE VA Link to comment Share on other sites More sharing options...
Kmlwx Posted January 18, 2011 Share Posted January 18, 2011 snow and graupel outside. What about inside? Link to comment Share on other sites More sharing options...
real Posted January 18, 2011 Share Posted January 18, 2011 The fact that we already had a county salt truck here (usually it's days before we see one) does not bode well for closures. Yea, but nothing scares school systems like freezing rain. Hell, half the time it's not even officially freezing rain but they cancel school anyways just in case it is somewhere in one of the coldest sections of their districts. And if forecasts indicate some areas could be frz till like 9 a.m. or beyond, a 2-hour delay doesn't do them much. We'll see. But it's not like exactly school systems around here are hesitant to call off classes, especially since there haven't been any snowdays yet. Link to comment Share on other sites More sharing options...
yoda Posted January 18, 2011 Share Posted January 18, 2011 still 22 here just reached 1" snow is much lighter now and is getting very icy but still snow. Anyone in that second batch of heavier precip coming from the south still reporting snow? I do not like the look of the radar, that has more of a rain signature then snow/sleet. As in freezing rain? Link to comment Share on other sites More sharing options...
Master of Disaster Posted January 18, 2011 Share Posted January 18, 2011 Back to snow in Northwest DC... I'm thinking the FEDS could have a 2 hour delay tomorrow and Montgomery/Fairfax schools close, just my hunch There are more politics involved with those calls than most people can possibly imagine. You should have been in on the one where MD tried to force MC to close a school over H1N1. UGLY!!! Link to comment Share on other sites More sharing options...
BethesdaWX Posted January 18, 2011 Share Posted January 18, 2011 still 22 here just reached 1" snow is much lighter now and is getting very icy but still snow. Anyone in that second batch of heavier precip coming from the south still reporting snow? I do not like the look of the radar, that has more of a rain signature then snow/sleet. Its mostly snow in West Bethesda, with actual sleet mixing in... but I'm alot warmer than you (26.8 here) Link to comment Share on other sites More sharing options...
real Posted January 18, 2011 Share Posted January 18, 2011 For a minute here in Upper Northwest, it was HVY snow. But, literally, it lasted a minute. Kind of weird. Link to comment Share on other sites More sharing options...
PhineasC Posted January 18, 2011 Share Posted January 18, 2011 still 22 here just reached 1" snow is much lighter now and is getting very icy but still snow. Anyone in that second batch of heavier precip coming from the south still reporting snow? I do not like the look of the radar, that has more of a rain signature then snow/sleet. Time for your hourly dose of TUMS. Link to comment Share on other sites More sharing options...
Kmlwx Posted January 18, 2011 Share Posted January 18, 2011 Street back to completely bare pavement with that salt truck. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.