Tag Archive for 'central Pennsylvania'
January 9th, 2009 by Steven DiMartino
7:30 AM
The Arctic Express is on the way, and this has nothing to do with Santa Claus, however for some it might seem like Christmas morning all over again.
The negative EPO is going to be doing a heck of a job driving arctic cold air into the eastern two-third of the nation through next week. [...]
December 31st, 2008 by Steven DiMartino
6:50 AM
The low pressure system this morning that was expected to move through central New Jersey to actually developing over northern Delaware with significant pressure falls to the east of Atlantic City. The precipitation seen over central Pennsylvania will continue to solidy as the new low pressure system takes over and intensifies this morning.
Temperatures along [...]
December 30th, 2008 by Steven DiMartino
7:12 AM
While there is a lot of uncertainty for the end of the week, model guidance is at least converging on the idea of a strong Alberta Clipper moving through the forecast area on Wednesday.
Today, a much weaker disturbance will move to the north of the forecast area this afternoon. Currently, this disturbance is enhancing [...]
December 29th, 2008 by Steven DiMartino
7:26 AM
The negative NAO pattern is well on the way of developing and the first clipper that will impact the forecast area will help to enhance the 50/50 low that will be a major player in the later pattern. First though, let’s discuss the next three days.
High pressure will slide through the forecast area today [...]
December 28th, 2008 by Steven DiMartino
4:09 PM
I’m sure everyone has seen the latest 12Z guidance. The GFS is having trouble with the upper level features and the ECMWF is beginning to strut it’s stuff in the type 3 to 7 day span of dominance of accuracy.
Do I believe the ECMWF, well to an extent yes. I don’t want to put [...]
December 12th, 2008 by Steven DiMartino
7:00 AM
The strong low pressure system responsible for the heavy rain and limited ice accumulations is currently over New York City and is rapidly moving towards southern New England. While the heavy rain was expected along the coast, the further northward push of the surface and 850 MB low even managed to put an end [...]
December 10th, 2008 by Steven DiMartino
So far the overall forecast is going well in the timing and structure of the overall low pressure system over the Gulf Coast. The phase, so close yet so far away, has never meant more than what we are seeing in the water vapor images and the surface features.
At 500 MB, the shortwave associated [...]
December 10th, 2008 by Steven DiMartino
If you want to see what a strong cold front can do, check out the observations over Pennsylvania. Over western Pennsylvania, temperatures are falling into the lower 30’s meanwhile central Pennsylvania is in the 50’s! Here are some examples.
BFD: 32 IPT: 50
PIT: 37 AOO: 52
BGM: 35 AVP: 53
SYR: 31 [...]
December 3rd, 2008 by Steven DiMartino
Can you hear that? Can you hear the beat of excitement grow for this Sunday? There are even hints on the morning news of a snow threat. Well, now let’s wait for a moment before we all start doing snow dances and watching individual model runs at 3 AM. Does the upper level pattern support [...]
November 24th, 2008 by Steven DiMartino
If you want an idea of how cold last week was, consider this. Temperatures will return to normal this week with the morning lows for tomorrow morning being in the same range as last week’s highs for much of last week. Impressive right?
Clouds will begin to increase today as a cold front with a great [...]