psuhoffman Posted October 29, 2011 Share Posted October 29, 2011 Its snowing here, 35 degrees Link to comment Share on other sites More sharing options...
Nikolai Posted October 29, 2011 Share Posted October 29, 2011 DULLES REPORTING SNOW AT 4AM Link to comment Share on other sites More sharing options...
TalcottWx Posted October 29, 2011 Share Posted October 29, 2011 DULLES REPORTING SNOW AT 4AM WTF! That has to be early Link to comment Share on other sites More sharing options...
TalcottWx Posted October 29, 2011 Share Posted October 29, 2011 AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 356 AM EDT SAT OCT 29 2011 .SYNOPSIS... LOW PRESSURE EAST OF WILMINGTON NORTH CAROLINA WILL INTENSIFY AS IT MOVES UP THE MID ATLANTIC COAST THIS AFTERNOON...AND THEN EAST OF CAPE COD TONIGHT. HIGH PRESSURE WILL BUILD INTO THE MID ATLANTIC STATES SUNDAY AND FOR THE FIRST PART OF THE NEW WEEK. && .NEAR TERM /TODAY/... LARGE DIFFERENCE BETWEEN 00Z NAM AND GFS IN THE THERMO PROFILE BLO H7 AND MOST IMPORTANTLY BLO H85. KIAD 06Z SOUNDING SHOWS THAT THE GFS IS TOO WARM AND THE NAM IS TOO COLD AS EVIDENCED BY COMPARING THE MODEL SOUNDING PLOTS AT 06Z TO OBSERVED BALLOON. THIS SUPPORTS THE WIDE DISPARITY OF MODEL SNOW ACCUM EAST OF THE BLUE RIDGE...WITH THE NAM GIVING IAD 11 INCHES OF SNOW AND THE GFS GIVING ZERO INCHES OF SNOW. WILL BE USING THE 21Z SREF AS THE BASIS FOR THE SNOW ACCUM AND TIMING. HPC ANALYSIS SPEAKS OF A RECENT NAM UPGRADE THAT MAY BE PRODUCING A COLD BIAS IN THE MODEL. THIS PUTS THE LARGEST ACCUM SNOW IN OUR CWA WEST OF THE BLUE RIDGE IN THE POTOMAC HIGHLANDS WHERE 6-10 INCHES WILL BE COMMON. THE ENHANCED RADAR RETURNS SEEN NOW AT 07Z ON WSR-88D MOSAIC OVER S CENTRAL VA AND N CNTRL NC WILL STRATIFY AND BE THROWN BACK INTO THE COLD AIR ADVECTING IN ON A NORTHERLY WIND AS THE H7 LOW PASSES ACROSS PA THIS MORNING. SO WILL SEE A SLOW TRANSITION FROM RAIN TO SNOW MID MORNING IN THOSE LOCATIONS W OF I95 WHERE IT CURRENTLY IS RAINING. WATER TEMPS IN THE BAY ARE STILL IN THE UPPER 50S TO LOWER 60S. THIS WILL PRODUCE ALOT OF LATENT HEAT ON EASTERLYS ALOFT WHICH WILL MAKE IT VERY DIFFICULT TO MEASURE SNOW E OF INTERSTATE 95. HAVE TWEAKED MAX TEMPS UP A FEW DEGRESS EAST OF THE BLUE RIDGE. NO CHANGES TO WINTER HEADLINES...BUT A FEW TWEAKS IN SNOWFALL ACCUMULATIONS. ADVSRYS ARE CONTINUED DUE TO FIRST SNOWFALL OF SEASON AS OPPOSED TO REACHING ADVSRY CRITERIA 2 INCHES. Link to comment Share on other sites More sharing options...
TalcottWx Posted October 29, 2011 Share Posted October 29, 2011 New 3z SREF's have increased somewhat positively for the area Link to comment Share on other sites More sharing options...
TalcottWx Posted October 29, 2011 Share Posted October 29, 2011 Damn, the normally accurate intellicast radar is showing mixing already near gaithersburg... that would explain why dulles is already snowing. Link to comment Share on other sites More sharing options...
wxmeddler Posted October 29, 2011 Share Posted October 29, 2011 DULLES REPORTING SNOW AT 4AM you jinxed it... SPECI KIAD 290759Z 02010KT 6SM -RA BR BKN008 BKN012 OVC036 03/02 A3008 RMK AO2 RAB54SNE54 P0001 Link to comment Share on other sites More sharing options...
showmethesnow Posted October 29, 2011 Share Posted October 29, 2011 37 degrees and moderate rain just across the MD border in Hanover, PA. Saw that psuhoffman in Manchester, MD is getting snow so hope to see it here fairly soon. Of course he is at almost 1000 ft elevation when we are at 600 so it may take a little longer then that. Link to comment Share on other sites More sharing options...
derecho Posted October 29, 2011 Share Posted October 29, 2011 35 and mostly mod rain. Looks to be getting ready to change over any minute. Link to comment Share on other sites More sharing options...
TalcottWx Posted October 29, 2011 Share Posted October 29, 2011 37 at the towson weather station... wind is picking up.. rain is blowing into my 13th floor dorm window Link to comment Share on other sites More sharing options...
psuhoffman Posted October 29, 2011 Share Posted October 29, 2011 37 degrees and moderate rain just across the MD border in Hanover, PA. Saw that psuhoffman in Manchester, MD is getting snow so hope to see it here fairly soon. Of course he is at almost 1000 ft elevation when we are at 600 so it may take a little longer then that. Its snowing but its not sticking at all, its still 35 degrees so your not missing much yet. Link to comment Share on other sites More sharing options...
psuhoffman Posted October 29, 2011 Share Posted October 29, 2011 whats going on in those really heavy bands on radar down in northern VA? Any obs? Link to comment Share on other sites More sharing options...
showmethesnow Posted October 29, 2011 Share Posted October 29, 2011 whats going on in those really heavy bands on radar down in northern VA? Any obs? Was curious myself. Looks like you may have one of the heavier bands swing through your area soon. Let us know. Link to comment Share on other sites More sharing options...
Chase Posted October 29, 2011 Share Posted October 29, 2011 We just switched to all snow about 4:30. SUCH a dreadful evening of rain. Edit: I'm in Luray. It has been snowing in Harrisonburg since 6pm. Link to comment Share on other sites More sharing options...
showmethesnow Posted October 29, 2011 Share Posted October 29, 2011 Snow now mixing in here in Hanover PA. Temp is now at 36.5 degrees with the wind picking up. Link to comment Share on other sites More sharing options...
derecho Posted October 29, 2011 Share Posted October 29, 2011 whats going on in those really heavy bands on radar down in northern VA? Any obs? Still 34 and rain in the heaviest stuff. Some flakes mixed in. Link to comment Share on other sites More sharing options...
snownut Posted October 29, 2011 Share Posted October 29, 2011 31.1 now my low for night, snowing since last around 6:35 (earliest web cam picture showing snow) most all surfaces covered even the driveway. snow has been light throughout event. trees and deck have around 2.5 " so far Link to comment Share on other sites More sharing options...
derecho Posted October 29, 2011 Share Posted October 29, 2011 LWX significantly lowered accumulations. Link to comment Share on other sites More sharing options...
The Dude Posted October 29, 2011 Share Posted October 29, 2011 Damn, the normally accurate intellicast radar is showing mixing already near gaithersburg... that would explain why dulles is already snowing. Link to comment Share on other sites More sharing options...
Avdave Posted October 29, 2011 Share Posted October 29, 2011 32=33 degrees back and forth here in Leesburg, Flakes mixing in with some rain for the last 30 minutes. Loved the SPC disco and map. Would love to have a few inches out here. Highest temps since midnight as 36* Link to comment Share on other sites More sharing options...
derecho Posted October 29, 2011 Share Posted October 29, 2011 32=33 degrees back and forth here in Leesburg, Flakes mixing in with some rain for the last 30 minutes. Loved the SPC disco and map. Would love to have a few inches out here. Highest temps since midnight as 36* About the same here, now getting under that very heavy band- pouring Link to comment Share on other sites More sharing options...
Avdave Posted October 29, 2011 Share Posted October 29, 2011 About the same here, now getting under that very heavy band- pouring It is so close to flipping all snow here. Im actually surprised it hasnt already but did see the ob at IAD was all snow for a short period. Up at 1200 feet just to my west just outside Round Hill, snowing nicely and grounds are completely covered with snow. Will be heading up there later this morning to check out and grab a few pics. the IAD to Leesburg corridor will be a tough battle ground I have a feeling Link to comment Share on other sites More sharing options...
Herb@MAWS Posted October 29, 2011 Share Posted October 29, 2011 38 here in Columbia at 6am. Looking in the MAWS snowlight, it is rain, but the drops definitely have that ''heavy'' look to them, like they're trying to mix/change. Link to comment Share on other sites More sharing options...
NattyBo Posted October 29, 2011 Share Posted October 29, 2011 32.5 in downtown Rockvile. Getting heavy rain with huge, sloppy wet flakes mixed in right now. Link to comment Share on other sites More sharing options...
Kmlwx Posted October 29, 2011 Share Posted October 29, 2011 Have not checked but it sure sounds like it is sleeting outside my window here in Colesville, MD Link to comment Share on other sites More sharing options...
derecho Posted October 29, 2011 Share Posted October 29, 2011 Finally snowing 50/50 sloppy flakes and rain. Link to comment Share on other sites More sharing options...
snowdude Posted October 29, 2011 Share Posted October 29, 2011 LWX significantly lowered accumulations. For the I-95 areas yes, but they raised them for areas out west, including where I am in Hagerstown. Still raining here and 35 degrees. Link to comment Share on other sites More sharing options...
derecho Posted October 29, 2011 Share Posted October 29, 2011 Suddenly turned all frozen here. Getting lots of graupel and some real snow. Link to comment Share on other sites More sharing options...
Kmlwx Posted October 29, 2011 Share Posted October 29, 2011 Somewhere between 33 and 37 depending on which wxbug station I use. Regardless, it is cold out there. STill rain here - earlier report of sleet might have been false. Maybe a few pingers mixed in rain mainly tho. Link to comment Share on other sites More sharing options...
Ji Posted October 29, 2011 Share Posted October 29, 2011 Suddenly turned all frozen here. Getting lots of graupel and some real snow. Where are you ? Link to comment Share on other sites More sharing options...
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