USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 The likely reason for the different movement of the echoes over eastern New England is due to the upper divergence caused by the southeast quadrant of the upper low over Ontario and western Quebec that will be rotating southeastward towards the region. The upper divergence will allow the surface low to intensify, therefore intensifying the band of heavy snow. Link to comment Share on other sites More sharing options...
dendrite Posted January 28, 2021 Share Posted January 28, 2021 You can almost envision salmon getting pulled right out of the water under the 400 microbars. Link to comment Share on other sites More sharing options...
OceanStWx Posted January 28, 2021 Share Posted January 28, 2021 1 minute ago, USCAPEWEATHERAF said: Is it because the upper trof is not situated ideally and not as far southwest? Look at the position of the low pressure. Inverted trofs are inverted because the pressure trof extends north from a low pressure. With a low pressure this far south, the approach of a shortwave from the north orients the inverted trof more north/south and mostly offshore. As the low continues out to sea and the shortwave ends up over SNE, the inverted trof axis will end up aligned more NW/SE and allow some of it to make it inland. Typically a low pressure much closer to SNE and a shortwave approaching from the N would allow the trof axis to be more NW/SE from the start and much more likely to impact coastal areas. Link to comment Share on other sites More sharing options...
OceanStWx Posted January 28, 2021 Share Posted January 28, 2021 13 minutes ago, ORH_wxman said: Fishing boats coming back in with 12" of snow plastered to their sides and scorch marks from lightning strikes. Climb up into the crow's nest and sniff the ozone. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 Just now, OceanStWx said: Look at the position of the low pressure. Inverted trofs are inverted because the pressure trof extends north from a low pressure. With a low pressure this far south, the approach of a shortwave from the north orients the inverted trof more north/south and mostly offshore. As the low continues out to sea and the shortwave ends up over SNE, the inverted trof axis will end up aligned more NW/SE and allow some of it to make it inland. Typically a low pressure much closer to SNE and a shortwave approaching from the N would allow the trof axis to be more NW/SE from the start and much more likely to impact coastal areas. But you are also likely seeing impacts from a storm closer to the coast. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 Just now, OceanStWx said: Climb up into the crow's nest and sniff the ozone. Is this not a tropopausal fold type event? Link to comment Share on other sites More sharing options...
OceanStWx Posted January 28, 2021 Share Posted January 28, 2021 2 minutes ago, USCAPEWEATHERAF said: But you are also likely seeing impacts from a storm closer to the coast. Closer, not close. Our classic inverted trofs are a result of out to sea storms, but not one like this that is headed for Bermuda. Link to comment Share on other sites More sharing options...
OceanStWx Posted January 28, 2021 Share Posted January 28, 2021 10 minutes ago, USCAPEWEATHERAF said: Is this not a tropopausal fold type event? I wouldn't say it is. You aren't really getting the tropopause to fold under the upper jet. It's more of a tropopause polar vortex (TPV) that has dislodged. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 1 minute ago, OceanStWx said: I wouldn't say it is. You aren't really getting the tropopause to fold under the upper jet. It's more of a tropopause polar vortex (TPV) that has dislodged. Oh okay, Link to comment Share on other sites More sharing options...
OceanStWx Posted January 28, 2021 Share Posted January 28, 2021 13 minutes ago, USCAPEWEATHERAF said: Oh okay, I assumed it would be easier to find, but alas no luck, but 12/9/2005 would be a more classic fold I believe. But it's been a while since I've seen cross sections. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 Just now, OceanStWx said: I assumed it would be easier to find, but alas no luck, but 12/9/2005 would be a more classic fold I believe. But it's been a while since I've seen cross sections. Yeah that storm, brought a microburst through the entire length of the Cape Link to comment Share on other sites More sharing options...
butterfish55 Posted January 28, 2021 Share Posted January 28, 2021 Steady moderate snow here in Raynham with this band. Want expecting to see this much snow here today. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 Our Polar Vortex is moving southeastward now over Quebec, Canada Link to comment Share on other sites More sharing options...
DavisStraight Posted January 28, 2021 Share Posted January 28, 2021 1 hour ago, OceanStWx said: Honestly, it will probably be effing wild for anyone out fishing. It should at least partially make it onshore, but the best of it will be mostly for the fish. The fish are stealing our snow! 1 Link to comment Share on other sites More sharing options...
TalcottWx Posted January 28, 2021 Share Posted January 28, 2021 Beautiful dendrites fluffing down here Link to comment Share on other sites More sharing options...
CoastalWx Posted January 28, 2021 Share Posted January 28, 2021 0.8" last night and today. Link to comment Share on other sites More sharing options...
ORH_wxman Posted January 28, 2021 Author Share Posted January 28, 2021 3km still hits the outer Cape decently tomorrow. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 1 minute ago, ORH_wxman said: 3km still hits the outer Cape decently tomorrow. Winter Storm Watch in effect for tomorrow for Barnstable and Nantucket Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 2 minutes ago, ORH_wxman said: 3km still hits the outer Cape decently tomorrow. Honestly all the 18z guidance were west a bit with the upper low over NW RI and also the trough is stronger and the banding is stronger! Link to comment Share on other sites More sharing options...
TalcottWx Posted January 28, 2021 Share Posted January 28, 2021 4 minutes ago, ORH_wxman said: 3km still hits the outer Cape decently tomorrow. What is timing looking like? Would probably drive down tomorrow pm and stay in brewster Link to comment Share on other sites More sharing options...
Dan Posted January 28, 2021 Share Posted January 28, 2021 1.5" total from today's snow showers Link to comment Share on other sites More sharing options...
ORH_wxman Posted January 28, 2021 Author Share Posted January 28, 2021 1 minute ago, DotRat_Wx said: What is timing looking like? Would probably drive down tomorrow pm and stay in brewster Prob rolls through there between 3-5pm or so....they may have a bit of OES on either side of it, but the main intense band prob won't last more than a couple hours. Link to comment Share on other sites More sharing options...
The 4 Seasons Posted January 28, 2021 Share Posted January 28, 2021 Watches up for Jimmy! God bless. 2 1 Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 28, 2021 Share Posted January 28, 2021 6 minutes ago, The 4 Seasons said: Watches up for Jimmy! God bless. thanks, I think more snow will fall Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 29, 2021 Share Posted January 29, 2021 Cold air has arrived and so has the ocean enhanced snows along the trough/surface boundary. Temp is 30F Link to comment Share on other sites More sharing options...
SouthCoastMA Posted January 29, 2021 Share Posted January 29, 2021 2 minutes ago, USCAPEWEATHERAF said: Cold air has arrived and so has the ocean enhanced snows along the trough/surface boundary. Temp is 30F Yeah actually starting to stick finally. It was snowing all day but little to show for. Maybe we grab an inch before tomorrow Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 29, 2021 Share Posted January 29, 2021 5 minutes ago, SouthCoastMA said: Yeah actually starting to stick finally. It was snowing all day but little to show for. Maybe we grab an inch before tomorrow The band is being enhanced by the Bay. The precipitation is blossoming. 18z GFS was west with the H5 low as it travels over RI. This brings the band inching west a bit. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 29, 2021 Share Posted January 29, 2021 The biggest difference is that cold air has arrived and you can feel it outside. Link to comment Share on other sites More sharing options...
OceanStWx Posted January 29, 2021 Share Posted January 29, 2021 12 minutes ago, USCAPEWEATHERAF said: Cold air has arrived and so has the ocean enhanced snows along the trough/surface boundary. Temp is 30F The CAA is definitely helping steepen in the low level lapse rates in the inverted trof and thus increasing the intensity of snow showers. Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted January 29, 2021 Share Posted January 29, 2021 What has developed off of Portland Maine over the western Gulf of Maine and is moving southward? It looks like the beginnings of a northerly fetched band of snow. Link to comment Share on other sites More sharing options...
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