04 December 2011

Soggy Weather...

Rain showers this morning making their way into the western half of the region as the cold front is still moving through Illinois at this point. The front will make it into the region this afternoon and when it does, it will start to slow down and become stationary late tonight in Ohio. This will keep rain showers in the region.

The low pressure centre right now is making its way just off to the west of Chicago this morning as it continues to head northeastward towards the western half of the Great Lakes. The low pressure is doing well this morning at 1007-mbs as of the 09Z charts. Now this low pressure has a trailing cold front with it, and as this low moves off to the northeast, it will pull its front into the region. Now because this low pressure will be making a sharp northeast course, the cold front will start to slow down in its west-east course and then stall out over Ohio later tonight.

As this front stalls out in the region, it will keep the rain showers in the region. Now the ground is already saturated from the rains we saw a few days ago, and though the rain fall totals for today and tonight wont be nearly as high as what we saw the other day, it won’t take much to help kick up some of that field flooding again. But that is a topic for another update.

Now as this front stalls out, it will extend all the way down into the southern states. This front will allow for another area of low pressure to develop down in the souther states (along with a few other waves of low pressure) tomorrow. Of the waves of low pressure, one of them will be an alright sized low pressure centre and this is going to help kick up the rain showers back into the region.(SREF's Precip/Pressure look at Monday night).

The low pressure will actually start in helping to move to the front out of the region, but that does come with the price of rain showers. Looks like tomorrow will be another good day of rain showers throughout the region as the low pressure centre moves up towards the region.

The upper level trough isn’t going to be as strong as I was originally expecting, but it will still be around and rather influencial for the low (as the normally are). Now this second low pressure (the one that will develop tomorrow along the stationary front) won’t be very strong as it passes through the eastern half of the region. This means that it won’t have as good of a cold air pool as I was expecting this time yesterday. This doesn’t mean that the snow shower chances are going to be completely gone in the region. Hardly.

The low will be able to pull in enough cool air that some of those rain showers (especially in the east) will be able to turn over to snow showers. At this point, I am not expecting any accumulation from this system, and at most the system could give us would be a half inch.

This low pressure will pull the stationary front out of the region around Tuesday and that is giong to help to end the precip chances throughout the region. A nice sized high pressure will build in behind the front and that is going to push our temperatures down to below average temps. The highs on Thursday might not even get out of the mid 30’s in some places, some obviously some cooler weather in the region towards the end of the week.

I’ll keep you updated throughout the day…I’ll have a brief update coming up between 10.00 a.m. and 11.00 a.m. and I’ll be tweaking up those extended forecasts around that time as well. But for now, I am Timmy Albertson and that’s the weather! Keep checking back for updates becauseI’ll have them for you as always.

No comments:

Post a Comment