WxWatcher007 Posted February 3, 2023 Share Posted February 3, 2023 Mesoscale Discussion 0130 NWS Storm Prediction Center Norman OK 0939 PM CST Thu Feb 02 2023 Areas affected...Northern into central PA...central NY...VT...and western NH Concerning...Snow Squall Valid 030339Z - 030745Z SUMMARY...Snow squalls could continue spreading east-southeastward across parts of the Northeast during the next few hours. Rapid visibility reductions in bursts of heavy snow are possible. DISCUSSION...Latest mosaic radar imagery shows a well-organized snow squall moving east-southeastward at around 30-40 kt across parts of central NY. This band is generally focused along the leading edge of a southeastward-advancing arctic cold front, which is expected to continue overspreading parts of the Northeast during the next few hours. Regional VWP data depicts 50 kt of west-southwesterly flow in the lowest 3 km, which combined with strong/focused forcing for ascent and pockets of conditionally unstable boundary-layer conditions preceding the snow squall, should support its maintenance with eastward extent. The primary limiting factor continues to be somewhat dry low-level conditions, though it appears that the aforementioned factors are generally compensating for this. Therefore, the potential for rapid visibility reductions in bursts of heavy snow should continue spreading east-southeastward across the Northeast during the next few hours before a gradual decrease in intensity/organization. 1 Link to comment Share on other sites More sharing options...
WxWatcher007 Posted February 3, 2023 Share Posted February 3, 2023 Midnight high of 31.6° lol 1 Link to comment Share on other sites More sharing options...
WinterWolf Posted February 3, 2023 Share Posted February 3, 2023 9 minutes ago, WxWatcher007 said: Midnight high of 31.6° lol It’s always weird when that happens…kind of confusing. 29 here currently. 1 Link to comment Share on other sites More sharing options...
dendrite Posted February 3, 2023 Share Posted February 3, 2023 28° at 12am but maybe below zero by 12pm 1 Link to comment Share on other sites More sharing options...
OceanStWx Posted February 3, 2023 Share Posted February 3, 2023 20 minutes ago, dendrite said: 28° at 12am but maybe below zero by 12pm 1 Link to comment Share on other sites More sharing options...
mreaves Posted February 3, 2023 Share Posted February 3, 2023 Front must be here. The wind is starting to roar. Still 25° Link to comment Share on other sites More sharing options...
mreaves Posted February 3, 2023 Share Posted February 3, 2023 Well that escalated quickly. White out conditions and the temp is down to 21° 3 Link to comment Share on other sites More sharing options...
Ginx snewx Posted February 3, 2023 Share Posted February 3, 2023 6 hours ago, CoastalWx said: You may get a quick one. Looks like they fade as they head SE. A little too dry. If flow was more SW off the ocean we’d probably have a derecho. 6 hours ago, ORH_wxman said: Yeah if we could have turned the flow (like 925-850) more like 230-250, we could’ve had some really intense stuff because LL moisture is the main limiting factor in these. The other WINDEX checklist items are present. Man that's a great squall line. Too bad it's going to dry out Regional VWP data depicts 50 kt of west-southwesterly flow in the lowest 3 km, which combined with strong/focused forcing for ascent and pockets of conditionally unstable boundary-layer conditions preceding the snow squall, should support its maintenance with eastward extent. The primary limiting factor continues to be somewhat dry low-level conditions, though it appears that the aforementioned factors are generally compensating for this. 1 Link to comment Share on other sites More sharing options...
powderfreak Posted February 3, 2023 Share Posted February 3, 2023 Obs look great. Local MVL ASOS with the M1/4 visibility. Gusted near 40mph too. METAR KMVL 030510Z AUTO 33015G21KT M1/4SM +SN FZFG VV007 M07/M09 A2961 METAR KMVL 030505Z AUTO 33014KT M1/4SM +SN FZFG VV010 M07/M09 A2961 RMK AO2 PK WND 31027/0502 WSHFT 0451 P0000 T10671089 METAR KMVL 030500Z AUTO 32021KT M1/4SM +SN FZFG VV013 M06/M08 A2962 KMVL 030458Z AUTO 32022G34KT 1/4SM +SN FZFG VV014 M06/M08 A2962 RMK AO2 PK WND 32034/0457 Link to comment Share on other sites More sharing options...
Professional Lurker Posted February 3, 2023 Share Posted February 3, 2023 Man that's a great squall line. Too bad it's going to dry out Regional VWP data depicts 50 kt of west-southwesterly flow in the lowest 3 km, which combined with strong/focused forcing for ascent and pockets of conditionally unstable boundary-layer conditions preceding the snow squall, should support its maintenance with eastward extent. The primary limiting factor continues to be somewhat dry low-level conditions, though it appears that the aforementioned factors are generally compensating for this.Yup. Fizzled big time out this way. Looked great west of Albany. Now? Naso much...Sent from my SM-A505U using Tapatalk Link to comment Share on other sites More sharing options...
TalcottWx Posted February 3, 2023 Share Posted February 3, 2023 29/12 Link to comment Share on other sites More sharing options...
moneypitmike Posted February 3, 2023 Share Posted February 3, 2023 31* in Westborough, 28* at Pit2 Link to comment Share on other sites More sharing options...
dendrite Posted February 3, 2023 Share Posted February 3, 2023 19° and dropping quickly. Looks like a coating of new snow from the line. 1 Link to comment Share on other sites More sharing options...
powderfreak Posted February 3, 2023 Share Posted February 3, 2023 Down to 0F at home and -3F at 1500ft. 1” of new snow or so eyeballing it. 1 Link to comment Share on other sites More sharing options...
Damage In Tolland Posted February 3, 2023 Share Posted February 3, 2023 Decided to run today which is usually a day off instead of tomorrow. Was fairly windy but not what I was expecting. Maybe that comes after sunrise? Temp fell from 27 to 23 in the time I was out Link to comment Share on other sites More sharing options...
moneypitmike Posted February 3, 2023 Share Posted February 3, 2023 Temp dipping now. 31 -28 in the last 15 minutes. 28* to 19* at Pit2 in the last 30 minutes. 1 Link to comment Share on other sites More sharing options...
OceanStWx Posted February 3, 2023 Share Posted February 3, 2023 2 minutes ago, Damage In Tolland said: Decided to run today which is usually a day off instead of tomorrow. Was fairly windy but not what I was expecting. Maybe that comes after sunrise? Temp fell from 27 to 23 in the time I was out Not sure the front has even crossed you yet. Should be shortly though. There was a wind shift with the snow showers, but the real temp drop didn't start until the second boundary passed. Link to comment Share on other sites More sharing options...
Damage In Tolland Posted February 3, 2023 Share Posted February 3, 2023 10 minutes ago, OceanStWx said: Not sure the front has even crossed you yet. Should be shortly though. There was a wind shift with the snow showers, but the real temp drop didn't start until the second boundary passed. Oh ok. I thought that first pulse was the front . Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted February 3, 2023 Share Posted February 3, 2023 A coating here from the squall. Looks better to the east of here Temps dropped from 24 to 18 in the last hour Link to comment Share on other sites More sharing options...
WxWatcher007 Posted February 3, 2023 Share Posted February 3, 2023 44 minutes ago, OceanStWx said: Not sure the front has even crossed you yet. Should be shortly though. There was a wind shift with the snow showers, but the real temp drop didn't start until the second boundary passed. Yeah, looks a little slower here. PWS in NW CT down in the teens now, however. 1 Link to comment Share on other sites More sharing options...
CoastalWx Posted February 3, 2023 Share Posted February 3, 2023 Temp dropped 2F in 3 min. We tank. 3 Link to comment Share on other sites More sharing options...
mreaves Posted February 3, 2023 Share Posted February 3, 2023 -2.5/-10.7. It was 28 at midnight. 2 Link to comment Share on other sites More sharing options...
512high Posted February 3, 2023 Share Posted February 3, 2023 18 ASH, wind chill 13 very light trace sn, highest gust on shop Davis 26 1 Link to comment Share on other sites More sharing options...
dendrite Posted February 3, 2023 Share Posted February 3, 2023 8.7° Pathetically the new low for the season. 1 2 1 Link to comment Share on other sites More sharing options...
WxWatcher007 Posted February 3, 2023 Share Posted February 3, 2023 21.4/5 27° an hour ago 1 Link to comment Share on other sites More sharing options...
ORH_wxman Posted February 3, 2023 Share Posted February 3, 2023 ORH went from 25 to 18 on the latest 12z ob 2 Link to comment Share on other sites More sharing options...
Cold Miser Posted February 3, 2023 Share Posted February 3, 2023 First of 3 layers for this mornings site observations. 2 Link to comment Share on other sites More sharing options...
HIPPYVALLEY Posted February 3, 2023 Share Posted February 3, 2023 Already down to 10° here. 3 Link to comment Share on other sites More sharing options...
Modfan2 Posted February 3, 2023 Share Posted February 3, 2023 9 minutes ago, Cold Miser said: First of 3 layers for this mornings site observations. Didn’t Iron Maiden make a song about that, Fear of the Dark? Link to comment Share on other sites More sharing options...
CoastalWx Posted February 3, 2023 Share Posted February 3, 2023 Temp drop has slowed a bit, but now starting to fall steadily. Link to comment Share on other sites More sharing options...
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