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Central PA Fall Thread


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... A strong thunderstorm will affect northeastern Dauphin and

northwestern Lebanon counties...

At 130 am EDT... a strong thunderstorm was near Penn National

raceway... moving north at 25 mph.

Wind gusts to 40 mph are possible with this storm. This storm will

affect Lykens and Williamstown.

Slight rotation has been detected in this storm. Be prepared to

take action if a severe thunderstorm or Tornado Warning is issued.

This will impact I-81 between mile markers 78 and 93.

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Take a look at this IR loop, stunning. Plus it seems like the trough is finally going negative the last few frames as tops are starting to build back west in Virginia and take on a more NNW flow. Any MET be able to interpret what that means for us?

http://www.goes.noaa...LOOPS/ecir.html

Hurricane Katia continues to crank that ridge off the coast and essentially hold the powerful jet in place. Katia is still pressing on a NNW-N trajectory it appears so it certainly doesn't bode well for things to make any kind of a marked shift as of yet. What an incredible setup. Ewalls WV imagery illustrates things even better.

http://www.meteo.psu.edu/~gadomski/SAT_ATL/anim8wv.html

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In a non related subject...I'm heading up to Port Royal, PA after my last class at Lock Haven Friday, what should the weather be like for the Tuscarora 50 weekend MAG?? Not looking good??

It still looks kinda meh for Friday, probably some showers and whatnot possible. After that though we may look a little bit better Sat/Sun.

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canderson, are they reporting any bad flash flooding down your way?? That has got to be the heaviest radar returns I have seen in a LONG time just training over one spot!!

I don't have a scanner and my satellite's out, so I'm kinda in the dark. With this rain, no way are streets not flooded. I'd guess since midnight we have 3.5". I have a fear Rhe river crest here gets to 28'. With all the rain north and this training HBG area is likely f'd more than most realize.

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Did KMDT really just go over 13" for a storm total so far? If so, my sarcastic remark at 8 am this morning when there storm total was just over 7" to some coworkers about how Harrisburg might surpass Agnes's rain total is looking really bad in hindsight. Ironically, I don't think they took it as sarcasm, and instead thought I was dead serious.

Also, there seems to be a new line of heavy storms developing west of the main firehose, and building back to those crazy returns in the western D.C suburbs.

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Hurricane Katia continues to crank that ridge off the coast and essentially hold the powerful jet in place. Katia is still pressing on a NNW-N trajectory it appears so it certainly doesn't bode well for things to make any kind of a marked shift as of yet. What an incredible setup. Ewalls WV imagery illustrates things even better.

http://www.meteo.psu...TL/anim8wv.html

Agreed! Meteorologically speaking, it is a fascinating setup! Amazing to see Katia blocking up the entire flow pattern on the East Coast. Looks like things will finally get a kick from that piece of energy entering Alabama.

The results tomorrow morning will be fascinating in a different way though. :(

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Did KMDT really just go over 13" for a storm total so far? If so, my sarcastic remark at 8 am this morning when there storm total was just over 7" to some coworkers about how Harrisburg might surpass Agnes's rain total is looking really bad in hindsight. Ironically, I don't think they took it as sarcasm, and instead thought I was dead serious.

Also, there seems to be a new line of heavy storms developing west of the main firehose, and building back to those crazy returns in the western D.C suburbs.

It was 9.9" as of 11 pm and heavy rain continuously since then, so it's likely.

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Also down south, that main firehouse is still moving due north, but look at the heavy returns starting to align more in a NNW fashion as the move N or NNE, while the new firehouse over Philly the heavy returns as moving north but aligning themselves in a more NNE fasion. I wish I understood the synoptic dynamics that are causing it, cause it looks really interesting.

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Wow at the new band setting up over the delaware region down towards Norfolk. I wonder if this new band that is developing, if it is going to be the primary band later on. The band that is over Harrisburg now looks like it is dying off slighly and is definetely on the move to the NNE now, albeit slowly. The back edge looks to push through within the next two hours. This all spells bad news for Binghamton.

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they're talking 38.5ft on the susquehanna river at the wilkes barre gauge by 06Z friday morning, 40.4ft in meshoppen, 27.2ft in towanda, and a record 26ft in binghamton by 18Z today. . the big hope is that the dikes hold there. I am hearing big trouble in binghamton, with evacuations there and in johnson city, enough to worry if the flood walls will hold (they hold to 25.6ft).

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The outflow is setting off storms just to the east of the main firehose moving due East. Wow, never saw so many streams of storms moving all different directions with a south-north flow before.

And then there's the little borough of Tamaqua wedged in between, getting hardly anything.

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they're talking 38.5ft on the susquehanna river at the wilkes barre gauge by 06Z friday morning, 40.4ft in meshoppen, 27.2ft in towanda, and a record 26ft in binghamton by 18Z today. . the big hope is that the dikes hold there. I am hearing big trouble in binghamton, with evacuations there and in johnson city, enough to worry if the flood walls will hold (they hold to 25.6ft).

yeah this whole storm is bad for a lot of areas, but if I had to pick a decent size city that looks to take the worst it would be Binghamton, I'm really worried about them. I wouldn't be surprised to see it over 26ft there, it is already around 21 approaching 22ft and they are going to get hvy rainfall the rest of the morning seeming how they are on the far eastern edge of the training storms, so even with a shift towards the east, they still have to bare the brunt of the storm.

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