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June 2016 Discussions/Observations


bluewave

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It will be interesting to see what the 00z EURO and GGEM do with the 00z NAM jumping on board.

 

The 0z OP Euro started to back off as expected and is moving closer to the EPS mean further offshore.

It's pretty much a given that the OP will back off when the OP will is the outlier among its ensembles.

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6z NAM has rain NYC S and W Thurs/Fri-bone dry NE of there.  I think the big Euro cutoff was Sunday however, so appears folks are talking about two different events here.

 

 

The 0z Euro has chamber of commerce weather the next 10 days with only 0.3 of rain in NYC.

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yeah, looks like a dry pattern coming up.  My last big rain was Sun Jun5th.  Could go 2 weeks from then with almost nothing.

 

I am glad that I finally got to see some heavy downpours here over the last week or so.

Saw on the news last night that the dry conditions this spring caused a gypsy moth problem.

 

http://newyork.cbslocal.com/2016/06/09/gypsy-moth-caterpillars/

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The big story over the next week or so will be the potential record heat wave and 600 dm

ridge over the SW US. That would be pretty close to record 500 mb heights and heat for

that area.

 

Friday through next Tuesday...
Confidence continues to increase that we will see a major, if not
historic heat wave during this period. The operational GFS, along
with most of its respective ensemble members now show 500mb heights
rising AOA 600dm by Sunday, then holding at, or near these levels
into next Tuesday as the upper low center along the Pac NW coast
weakens and strong longwave trofing drops southward along the East
Coast. These 500mb heights, along with 850mb temperatures in the 35-
38C range are very close to what we saw during the late June 1990
heat wave when Phoenix Sky Harbor recorded temperatures as high as
122F. Thus, confidence is now quite high that we will see
temperatures approach these levels during this period, especially on
Sunday and Monday. It also now appears, given the latest
euro/gfs/gem output, that very strong ridging aloft over the Desert
Southwest will persist into at least the middle part of next week,
which will likely mean that our current Excessive Heat Watch will
have to be extended even further into the future.

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Once again, the GFS schools the Euro.

 

Not really since it had the same solution also in earlier runs.

But the EPS and GEFS had the right more suppressed idea.

That's why ensemble forecasting is one of the biggest model

advances of the last 20 years.

 

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