Friday, December 19, 2008

Dry Slotting

Snow Totals:
10AM- Dusting
11AM- 0.5"
12PM- 1.5"
1PM- 3.2"
2PM- 4.2"
3PM- 4.6"

Post:
Bad news for snow totals, good news for traveling...but the storm's dry slot is going to just hit Groton. It is racing eastward across Southern New York and should be entering Tompkins and Cortland Counties by 3:30. This should more or less end the snow.



Now, the low is forecast to start taking more of a southeasterly track, so I think we will get back into the snow this evening. However, we will be hard pressed to get to 8" I think...let alone a foot. I think 5-9" total would be a good projection for Groton now. Areas just to the north, however, that remain in the snow will stick in that 8-14" range.

Morning Storm Update

It is now quarter after 10am, and everything is going pretty much as expected. The snow started here in Groton about an hour ago, and already visibilities are down to roughly a mile as the snow has started to pick up in intensity. Looking at the official 10AM observations, Ithaca is reporting light snow, with moderate snow in Rochester, Penn Yan, and Dansville, and heavy snow falling in Buffalo. Over the next hour, expect the snow to continue to increase in intensity to the rate of an inch or so an hour. The snow will continue at least at that intensity, likely reaching 2" per hour at times, through the afternoon. Heavy and moderate snow is being reported back through Michigan. There is actually heavy snow in Wisconsin as well, but I think Lake Michigan is enhancing that snow since the winds are out of the northeast. Here is a look at the radar (from 9:30...but that is recent enough to get the point across). You can see any mixed precipitation is well south, and the snow extends back into the areas I just described. All this is moving more or less east-southeast.



Bottom line is the snow is going to come down hard very soon and continue at rates of 1-2" per hour until at least sundown. There may even be some thunder and lightning in the snow during the early and mid afternoon. Please leave a comment here, or log onto the chat (assuming it is open) and report any thunder! The chat room will likely be open most of the day today as well. I will continue to update this blog hourly, probably just with snow totals, but also any new information that comes in.

Thursday, December 18, 2008

Another Friday Snow Storm

Another Friday, another snow storm for Central New York. Unlike last week's storm, this storm is not a nor' easter. It is pretty much moving west to east, so there is no worry about the models having an eastward bias. That makes my life a little easier this time around. I decided to do a snow map after all, even though the entire GrotonWeather forecast area should get the same amount.



As you can see, this will be a big storm, despite its relatively short duration. The snow will being to move in during the morning, before coming heavy by 10 or 11AM. It will really come down hard for a period of 6-8 hours, likely exceeding an inch per hour at times. By the evening, it will quickly taper off to just flurries over night.

I am going to dinner now, but once I get back (by 6:30-7), I will open the chatroom to field questions...and I will likely be there a good part of the night!