The NAM once again screws up the positioning of the front. (note to self: forget using the NAM in close call situations). So as it is, temperatures were warmer today by about 5 degrees, and have been slower to fall this evening as well. Still expecting temperatures to fall to freezing in time for some icing before midnight. By midnight, the bulk of precipitation will be over the area, falling as freezing rain through 1am, and then sleet and snow between 1am and 4am, followed by all snow afterwards. The models are fairly consistent in water equivalents reaching an inch. About .2" to .3" will be taken away due to rain, another .2" to .3" for freezing rain and sleet, and the rest is left for snow. Bulk of the precipitation will be out by 6am. Light snows likely to continue through 9am to 10am. Main issue for both the snow and ice forecast is the timing of cold air advection into the area. Has not been up to par through today, and its performance through this evening will be the deciding factor in accumulations.
Snow accumulation: 4" to 6"
Ice accretion: .2" to .3"
- Snowday outlook -
I'll quote what I have said to many people today: "At least a delay." Icing and at least light snow accumulation through 7am should be enough for a delay. The actual timing of the precipitation will dictate whether or not a cancellation is in store. A cancellation may be issued just for clean up purposes.
No comments:
Post a Comment