Tag Archive for 'cyclogenesis'
December 28th, 2008 by Steven DiMartino
10:22 AM
The up coming forecast for the middle and end of this week is going to be very difficult. The overall idea here on all model guidance is that the negative NAO block will be established while a series of clippers move through the forecast area. One clipper intensifies, and produces a strong Miller B [...]
December 7th, 2008 by Steven DiMartino
I spent a long time looking at the model guidance this afternoon and developing the basic idea for what will unfold the next several days. Once again, those that worship models from run to run will most likely go insane as the guidance swings wildly from various solutions. Let’s first break down what we know [...]
November 30th, 2008 by Steven DiMartino
There is some good news and bad news I want to share with everyone this morning based on this coming week and the weeks to follow. I’ll start with the bad news first to get it out of the way.
The bad news for the medium and long range pattern is that upper low over the [...]
November 23rd, 2008 by Steven DiMartino
I know there is a lot of excitement for the model runs over the past couple of days. There has been plenty of rumors of potential storms and very impressive arctic out breaks. However, ahead of the hysteria and excitement that we are all feeling (cause let’s face it, the winters the past 3 years [...]
November 22nd, 2008 by Steven DiMartino
A continued theme from the December forecast, looks like model guidance is strongly jumping onto the idea of a very cold start to December for much of the CONUS. We have a strong PNA ridge developing for the start of December, but also some other interesting features. A strong upper low over California is expected [...]
November 21st, 2008 by Steven DiMartino
Monday is going to be the warmest day for the past 7 days and the next 7 days after as a cold front approaches the forecast area. Don’t expect above normal temperatures though as the strengthening southwesterly flow will support near normal temperatures and increasing clouds through the period. 850 MB temperatures only barely cross [...]
November 20th, 2008 by Steven DiMartino
We are heading towards the finish line for November (wow, this month went fast), and all signs continue to point to some interesting potential for the forecast area through the Thanksgiving week.
First lets deal with the end of the weekend, which will be dry yet very cold on Sunday. Temperatures will continue to average [...]
November 19th, 2008 by Steven DiMartino
High pressure that will move from the Great Lakes through the forecast area this weekend will provide clear and dry conditions through Saturday and Sunday for the forecast area. Temperatures will remain below normal at a rate of 8 to 12 degrees, so continue to expect chilly conditions.
The idea of a rapid warm up [...]
November 11th, 2008 by Steven DiMartino
This week is certainly going to end on the very wet side as a storm gets it’s act together over the eastern third of the nation through Saturday morning.
I’m going to jump right to Thursday afternoon. The most interesting aspect of this period is the small yet intense southern branch disturbance that moves from the [...]
November 11th, 2008 by Steven DiMartino
The pattern is becoming more amplified and we will begin to feel the effects of the amplification by Wednesday night.
First, it’s interesting to see that all model guidance now keeps the southern branch disturbance not only separate, but nearly shears the disturbance apart as the northern branch of the Jet Stream dominates the eastern United [...]