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May 2016 Discussion/Observations


dmillz25

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Euro shifted the heaviest rains from the Delmarva up across Long Island like the NAM.

GFS came in similar to the old 12z Euro run with best rains over eastern PA. Someone

within 150 miles of NYC is going to get the heaviest rain event of the spring so far.

Maybe the first time in a while that the heaviest spring precip event happens on Memorial Day.

We just need a few more runs to pin down where the heaviest sets up.

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Euro shifted the heaviest rains from the Delmarva up across Long Island like the NAM.

GFS came in similar to the old 12z Euro run with best rains over eastern PA. Someone

within 150 miles of NYC is going to get the heaviest rain event of the spring so far.

Maybe the first time in a while that the heaviest spring precip event happens on Memorial Day.

We just need a few more runs to pin down where the heaviest sets up.

 

Regardless, everyone is going to get some rain out of this, its just a matter of what areas see the heaviest. Both the Mt.Holly and Upton NWS offices mention a PRE in their morning discussions and highlight the concern for heavy rain.

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That 2.00" tropical PWAT plume would be a new record for Memorial Day. So the areas that get the best training

will probably see 2+. It figures that it would take a tropical interaction to finally deliver some much needed heavy

rains around the region.

 

On another note, this system continues the trend of recent seasons focusing development north of 20N in the tropics. The last major hurricane to impact as far south as 20N was Sandy.

 

Its going to be interesting to see how this tropical season is going to play out around here, going to be interesting since we are moving from El Nino into a La Nina. Something tells me that we won't be able to completely dodge the bullet this year and if we get the heavy rains from what will most likely become TS Bonnie we are off to a fast start even if its not a direct impact. Also, while I am buying into the idea of a hotter summer this year I am not so sold on it being drier which there seems to be more of a consensus for.

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Euro shifted the heaviest rains from the Delmarva up across Long Island like the NAM.

GFS came in similar to the old 12z Euro run with best rains over eastern PA. Someone

within 150 miles of NYC is going to get the heaviest rain event of the spring so far.

Maybe the first time in a while that the heaviest spring precip event happens on Memorial Day.

We just need a few more runs to pin down where the heaviest sets up.

another 30-50 mile shift east and most miss the big rains....

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another 30-50 mile shift east and most miss the big rains....

 

That's true. The PRE would set up across Eastern LI and New England instead. That would be bad news

for the dry conditions around here.The 0z Euro made a big shift SE. We'll have to wait and see if this

is the storm to finally buck the seasonal trend of south and east.

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The synoptic-scale set-up looks conducive for areas of heavy rainfall, indeed; however, I'm not entirely convinced that the axis of heaviest rains will occur over our area. Typically, predecessor rainfall events (this might be a miniature one) generally develop along SSW-NNE axis near the longitude of the tropical cyclone.

 

Initially, the most significant rains may be to our west, with a gradual progression eastward as the forthcoming tropical cyclone begins to drift northeastward. The rain over our area might not be as impressive, though.

 

Here's a good schematic based upon the work of Bosart and Carr (1978) which coincidentally appears similar to the projected track of this cyclone - initially:

 

We'll have to monitor where the theta-e ridge axis aligns as that will determine the spatial distribution of rainfall.

 

wkmnv5.png

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Look like a weak sea breeze developing, leveling off temps in qns bk etc. Hasnt made it uptown for now still climbing thru the 90s.

It's full-on Midsummer heat wave disgusting outside. I refuse to complain though at least not yet.

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