10 AM Wednesday, 3/5/2008 - Can you say active? No sooner does one storm start to move out, and our attention turns to another messy system coming our way from the Gulf of Mexico. As we've had to deal with for just about all this winter, this is not a cut and dry forecast. Surprise here.
The European model has been the most consistent in showing a storm moving into the Northeast, and has been consistent tracking it farther and farther west. This would mean a better chance of rain for us. The Euro is getting some support from the NAM, as it takes a low into Central PA by midday Saturday. That too should get some rain in here.
The GFS is farther east with the track of the low, meaning more snow. The Canadian is the most impressive looking if you want a snowstorm, with a strong low pressure area over NYC Saturday evening, and our temperatures cold enough for snow.
So once again, we have our two camps. Rain or snow. The trend this winter has been for storms to be warm and bring rain in here, so initially that's what I'm leaning toward. You see the drops in the 7-day forecast. One thing is for sure, this thing coming at us out of the Gulf of Mexico will be loaded with moisture, so it will need to be watched closely.
I'm troubled by the fact that all the models we have at our disposal are all over the place with this one, only 3 days out. This tells me the models are having trouble latching onto all the key ingredients. Also, with the Euro showing remarkable consistency in showing a storm, and tracking it westward, gives me a few bits of confidence in keeping rain in the forecast Friday and Saturday.
The more I think of it. We're forecasting highs in the mid 40s tomorrow (Thursday). Where is the baroclinicity (temperature packing) to push this thing to the coast?????????? A perfect nor'easter would have some cold air packed up along the coast, and that temperature gradient providing the focus for the advancing low. That's not going to happen if we're in the 40s tomorrow.
Time will tell. The new 12Z NAM keeps the storm inland. We'll see what the GFS says later this morning.
-Dave