Winter Storm Threat: Dec 28-29 (final call)
I did end up bringing the contours further south from DC eastward. Not really anything to add to yesterday’s discussion. I’m leaving to go up north now where there’s 18 inches of snow on the ground.
Winter Storm Threat: Dec 28-29 (initial call)
Another quick-turnaround forecast as the next system looks to bring widespread 1-4″ totals to the Mid-Atlantic, with higher totals in the central Appalachians. Marginal boundary layer temperatures and initial surface winds out of the southeast makes finding that 1″ boundary a challenge yet again. Luckily, the upper-level temperatures are cooperating more this time around, so [...]
Winter Storm Threat: Dec 26-27 (only/final call)
Forecast confidence is low as most of the snow falls at the front end of the system before many areas switch over to mixed precipitation and/or rain. Very small changes in temperature at various levels of the atmosphere could lead to significantly different snowfall totals, especially east of the mountains. The northwestern parts of the [...]
Winter Storm Threat: Dec 21-23 (final call)
No major changes to the forecast, though I did decide to go a bit more aggressive with the totals in some areas. The most notable changes were in northern PA and southwestern NY, with an 8-12 inch contour added as lake-effect off of Lake Erie helps drive up totals. The back edge of the main [...]
Winter Storm Threat: Dec 21-23 (initial call)
Most if not all of the snow with this disturbance will accumulate well behind the cold front, with lake-effect snow bringing some respectable totals to western PA and WV. Most of the snow will fall Friday morning through Saturday afternoon. Low-level temperatures will limit accumulations across central and eastern PA. South and east of the [...]
Snowfall Verification for Dec 7-8
Quite a trying forecast, but overall it wasn’t a complete loss. Verified the mountain areas and highest totals fairly well, but the more heavily populated areas left much to be desired. Looking back, I could have been less generous with the 2-4 inch range in northern MD and southeastern PA, but other than that [...]
Winter Storm Threat: Dec 7-8 (final call)
Had to make some big changes in the northern areas… the boundary layer temperatures did not cool off as much as I thought it would on the models in addition to a quicker end to the snowfall. I think that a couple of areas will be able to top out just above 8 inches [...]
