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Sandy/Posttrop Phase Thread For PHL Area


phlwx

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NHC disco indicates Sandy might be downgraded to a TS in the next advisory and held there for about 36 hrs.

Looks like our CWA is most susceptible to the landfall. Intensity forecasting esp. inland always seems annoying though. Seems like it could be anything between wind advisory criteria to your house being blown over, and we probably won't know until it happens.

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This graphic might have been better if it just used relative terms like high, higher and highest for the shading to give an idea of where the greatest risk is for high winds.

Do they really have enough confidence to put numbers like that on a map?

well at some point you gotta start giving numbers...granted fri night might not be to early...but by sat night u gotta start showing numbers.

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On the GFS, with that track NNJ-state college, we get strong winds at landfall with the heavy rain threat, and then as it stalls around central pa, and wraps up, as cold air wraps up into the SE quad where we'll be located, the jet stays strong. Assuming it clears out we could see some heavy winds for an EXTENDED period of time... 925mb winds never drop below 50knots. Just some food for thought.

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1. The Euro at 12z did not "cave" to the GFS. It shifted north slightly. It might shift back south and fall back in line with the tropical guidance, it might not, but it's hard to call it a "cave". The Euro's consistency for the last 5 days has been so much greater than the GFS's.

2. It doesn't matter whether you have a landfall at Toms River, ACY, Lewes, or Chincoteague...in terms of inland effects, since as Tom mentioned earlier, Sandy will be extra-tropical so we'll see a more uniform wind dispersion than we would with a purely tropical system. (The coast, of course, is another story entirely....)

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1. The Euro at 12z did not "cave" to the GFS. It shifted north slightly. It might shift back south and fall back in line with the tropical guidance, it might not, but it's hard to call it a "cave". The Euro's consistency for the last 5 days has been so much greater than the GFS's.

2. It doesn't matter whether you have a landfall at Toms River, ACY, Lewes, or Chincoteague...in terms of inland effects, since as Tom mentioned earlier, Sandy will be extra-tropical so we'll see a more uniform wind dispersion than we would with a purely tropical system. (The coast, of course, is another story entirely....)

One run does not constitute a "caving" by any stretch at all...

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1. The Euro at 12z did not "cave" to the GFS. It shifted north slightly. It might shift back south and fall back in line with the tropical guidance, it might not, but it's hard to call it a "cave". The Euro's consistency for the last 5 days has been so much greater than the GFS's.

2. It doesn't matter whether you have a landfall at Toms River, ACY, Lewes, or Chincoteague...in terms of inland effects, since as Tom mentioned earlier, Sandy will be extra-tropical so we'll see a more uniform wind dispersion than we would with a purely tropical system. (The coast, of course, is another story entirely....)

Agree strongly with number 2...even a track towards NYC/LI....would not preclude flooding rain and damaging wind...the primary thing that track would impact is coastal flooding in terms of long term duration of onshore flow or a much shorter duration. For the majority on these boards any landfall from the lower Delmarva right up to LI still means one heckuva storm...it is our friends right on the water and along tidal tributaries for whom an exact track is of extreme importance

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