Confidence increases this morning as the GFS and NAM slowly come into agreement in some respects with the euro. There will be 4 main events with this storm. The first will drop several inches monday night. The second will occur tuesday morning between 5 and 9:30 dropping several more inches. The third is the main event and will occur tuesday afternoon into the evening dropping a decent amount of snow between 1:30 and 8:30. The last will occur tuesday night dropping a couple of inches more. Snow totals/map will be adjusted this evening.
-Jack
As the storm draws closer, we see that mother nature will not waste even one day of her precious winter as I am tracking a late season winter storm that will blow into the region Monday night into Tuesday. There is currently a disturbance in the Ohio valley that will move NNE today. A low will develop over the Great Lakes and move north while a more robust coastal low will move right along the coastline. This low will draw cold air south from Canada helping to aid in snow totals. Models disagree on just how much QPF (Quantative Precipitation Forecast) or liquid will fall. The euro has 2″ of QPF or around 20″ of snow. I think this is a bit too high but just goes to show how much disagreement there is between the models. The GFS is in agreement with the NAM that a little over an inch of QPF will fall giving us about 12″ of snow. Now, this is if ALL the precip fell as snow on a 10:1 ratio. There are mixing concerns along the coast particularly south of Portland. So that could hold down totals there. Overall, over a foot is possible in the foothills and mountains where upslope flow will aid in snowfall. I will release a snow map either later today if the models do start to agree but a snow map is much more likely tomorrow at some point.
-Jack
After a mostly quiet week weather wise, we have yet another snowstorm to track. This one will arrive tuesday with snow inland and a rain/snow mix at the coast. Right now, the details are still a little hazy but a plowable snow is possible for many inland towns. It will also extend the ski season for many. Expect another, more detailed post sunday as the storm gets closer. Although spring officially arrives wednesday, mother nature has other plans as this stretch of cool weather will continue into the foreseeable future.
-Jack
We have just one storm to look at this week. This storm will arrive Tuesday and there is pretty much 100% agreement on how it will play out. This one will be will rain everywhere. Except MT. Washington of course but then again, the rules are different up there… Sorry for not updating in the past few days. I’ve been trying to figure out how to run the WRF model on my computer and that has been quite tricky. I still haven’t got beyond downloading some file onto a flashdrive and can’t go past there until I figure out how to create a directory or whatever. Anyway, Rain will move in Monday night and last through Tuesday evening. Temps will run near 50 making for a warn, snow murdering force not good for skiing (exactly what I will be doing…). Beyond that, cooler air will move in late week with no other storms in sight.
I will be at Sunday River skiing tomorrow through Wednesday so next update will be Wednesday when I return.
-Jack
Updated snow map. I did not include totals fron west of WVA. Not much change here. Upped Western VA totals based on current observations but otherwise the forecast is on track.
-Jack
Red=8-12 Blue shades go from highest being dark blue to lighest being a blue/gray. 4-8″, 3-6″, 2-4″, 1-3″, C-2″. Putting more weight on euro due to preformance but will update map tomorrow.
Tried to come up with a snow map after seeing such a discrepancy between the euro and the GFS regarding track which will be crucial in determining amounts.
A complex weather pattern will evolve over the mid atlantic states this week with a few factors will come into play. There will be a low pressure system moving out of the midwest that will move into VA tuesday. The low will move just south of DC and transfer its energy to a developing secondary low offshore. This low will rapidly deepen as it moves ENE. A powerful blocking high over Maine will keep this storm from affecting Northern New England. Models have been shifting north meaning light precip for Southern New England and a slightly warmer scenario for the DC region. We could see up to a foot or more west of DC.
Stay tuned!
-Jack
This storm is over the Gulf Of Maine and is moving east. It will keep clouds and snow showers in the forecast though the weekend and into early next week but clears out in the latter part of next week. Beyond that, I see no big storms as a ridge of high pressure takes over.
Forecasterjack 