Really, no changes to my forecast for tomorrow night and Wednesday. Still thinking primarily snow through about 3am. This should allow a significant front end dump especially between 11pm and 3am when snow could fall near an inch per hour. Omega looks great during this time period, with good frontogenisys just east of the area. By 3am, should already be mixing with some sleet, and will likely change to freezing rain by 5am. Good model agreement that 850mb temperatures will warm above freezing by this time. However, the models have been trending stronger with high pressure to the north, which should reinforce the already cold air mass in place at the surface. Between 5am and 9am, should be freezing rain and sleet. This storm once again has a good signal for signficant icing. Between 9am and 1pm, some potential for a switch to plain rain, however main axis of precipitation should be out of the area by then, and only light rain would fall anyway. The evening could be interesting if low pressure that develops in the southeast can push west enough to lay down the hammer on the region. Hasnt had a very good signal, and as I said this morning, back end snows arent looking very promising. As for total accumulations, still good consensus for at least an inch of water equivalent. The 18z NAM unloaded close to 2 inches of water equivalent over the area, but the NAM is usually too wet. Probably looking at something between 1" and 1.25" of water equivalent. The first .4 to .7 should go to snow, with .2 to sleet and .3 to freezing rain and around .1" to possibly to plain rain.
Snow accumulation forecast: 5" to 8"
Ice accretion forecast: .2" to .35"
--- Snowday Outlook ---
No changes to this either. Looks very good for a snowday on Wednesday.
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Potential exists for another moderate snow event Sunday and into Presidents Day. At this point, still doesnt looks like anything major. But there's a good set up with this storm. An intense southern branch storm is forecasted to move up the coast Sunday afternoon. Northern branch storm is already long gone. To get a really good snow event out of this, ideally, the northern branch storm needs to slow down to phase with the southern storm. Good blocking in place by that time should allow mostly snow in the area. Current first guess is 3 to 6 inches.
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