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July 2018 Discussions & Observations Thread


Rtd208

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Southerly tropical flow the next 7-10 days = rain / storms high humidity.  On around 7/31 some hints the ridge / height push west and we get more SW flow and more heat.  We'll see how it evolves which to me is much like Jun 2013 and Aug 2003 both were followed by a period of warmth / heat.  Either way its wet / humid from here on out.

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24 minutes ago, CIK62 said:

EURO WEEKLIES are AN Temps. for all 6 weeks.    The AN Precip. holds up till Mid-August, then Normal.

RWTT is screaming AN Temps. for the entire Northern Hemisphere during the next 90.

A large portion of that will be by way of elevated minimums due to high DP's/humidity.  But some heat mixed in as well is possible.

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This July is one for the record books across the Northern Hemisphere. A very unusual ring of 500 mb blocking set up across the entire hemisphere near 50N. It resulted in the heat and drought in many locations. The current MJO pulse appears to be disturbing this pattern. The single ridge is breaking up into several segments. The WAR shifting east to the Maritimes is ushering in the wetter pattern with the deep tropical moisture feed. 

IMG_0190.GIF.25b66f2f47057558c7238ad1f87211fe.GIF

ecmwf-ens_z500aMean_nhem_1.thumb.png.fccf052170da02e86b6e2350080c7a03.png

ecmwf-ens_z500aMean_nhem_6.thumb.png.dd39b587a9610b27094750e332d6c2d1.png

 

 

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Still some hint / progression that on/around 7/31 into first week of August heights / ridge push west inland as WC ridge is breached a bit - if things progress this way - look for a period of more heat whether brief or not TBD, otherwise humid and very wet as was the likely flip from where we were late June to yesterday.

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On 7/11/2018 at 3:05 AM, SnoSki14 said:

I don't know about that, I had dews that were pushing 80F and the 70+ dew stretch lasted almost a week. 

Right now there's nothing to indicate we'll see a repeat of that, in fact a troughy late July/August is much more likely.

You sure about that? The humidity is back. August is always humid and disgusting. I think I’m going to go on a limb and say August is way below average

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36 minutes ago, NewYorkweatherfan said:

You sure about that? The humidity is back. August is always humid and disgusting. I think I’m going to go on a limb and say August is way below average

What would constitute way below average in August? That seems like very risky call. August looks normal to maybe just below normal for temps to me, but the dew points look to be quite high. All you need is a few breaks of sun with humidity and you can easily get to the mid-80s, just like today. I think the overnight lows help keep us at normal even if day time highs are not super hot. 

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There should be some enhanced chances for showers/thunder with locally heavy rain tonight into tomorrow morning as the moisture plume evident over the Atlantic towards eastern Long Island and New England backs west.  Should see the lift from the low to mid-level moisture and warm advection along with the right-entrance quad of the upper-level jet help spark scattered convection in the humid and fairly unstable airmass at times through Monday before the core of the moisture axis and better jet support shift a little west.  Still could be spotty showers/thunder thereafter through Tuesday, but heaviest stuff should be to our west (maybe clipping NW NJ).  This could end up being pretty bad just to our west in PA where they got more rain last night and will be in a pattern supportive of numerous storms with heavy rain rates through Wednesday.  The moisture axis shifts back east for Wednesday and perhaps into Thursday which should cause our chances for storms with locally heavy rain to ramp back up.  

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35 minutes ago, OHweather said:

There should be some enhanced chances for showers/thunder with locally heavy rain tonight into tomorrow morning as the moisture plume evident over the Atlantic towards eastern Long Island and New England backs west.  Should see the lift from the low to mid-level moisture and warm advection along with the right-entrance quad of the upper-level jet help spark scattered convection in the humid and fairly unstable airmass at times through Monday before the core of the moisture axis and better jet support shift a little west.  Still could be spotty showers/thunder thereafter through Tuesday, but heaviest stuff should be to our west (maybe clipping NW NJ).  This could end up being pretty bad just to our west in PA where they got more rain last night and will be in a pattern supportive of numerous storms with heavy rain rates through Wednesday.  The moisture axis shifts back east for Wednesday and perhaps into Thursday which should cause our chances for storms with locally heavy rain to ramp back up.  

 

Good post. I concur with this analysis. 

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1 hour ago, SACRUS said:

Miami afternoon.  Probable see lots of rainbows later.  Up to 86 here for the high

Another summer at JFK with 10 or more dew point days reaching 75 degree or higher. It's been quite a run especially over the last 3 summers.

JFK 75+ dew point days for 2018 so far with daily dew point max

6-19...75

7-1....75

7-2....76

7-3....78

7-4....76

7-5....77

7-6....77

7-17..76

7-17..76

7-22..76

 

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Next 8 days will be averaging 78degs., or 1deg. AN.

Month to date is  +1.7.   Should be  +1.5 by the 31st.

Seems if you throw away the first 5 days of July, the remainder of it will end up just Normal.

CMC/GFS still have 5" to 6" over next 10 days.  The PW may drop and LI may go + for 60hrs. around the weekend.

Longer range the RWTT says we dry out and burn up in August.   Tropical mischief near the 20th.  We get the Ridge Treatment and PacificNW gets the trough.  Then next switcheroo not till early Sept.

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