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July 2013 Observations and Discussions


bluewave

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The NAEFS which had earlier been on the warm train for the Northeast have now trended toward the other guidance w/ a normal to below normal temp regime to the coast. I still think its a bit too bullish on the WAR for the New England coast. The ECMWF ensembles certainly led the way with this pattern reversal to troughiness in the Northeast.

 

zkomjn.png

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Cooldown

 

 

NYC:

7/24: 83/68 (-1)

7/25: 68/64 (-11)

7/26: 83/65 (-3)

7/27:  82/70 (-1)

7/28: 73/69 (-6)

7/29: 85/69 (0)

7/30:

7/31:

 

EWR:

7/24: 84/68 (-2)

7/25: 68/62 (-12)

7/26: 85/66 (-2)

7/27: 84/67 (-2)

7/28: 80/69 (-2)

7/29:  87/70 (+2)

7/30:

7/31:

 

LGA:

7/24: 83/69 (-2)

7/25: 70/64 (-11)

7/26: 84/65 (-3)

7/27: 84/71 (0)

7/28: 82/71 (-1)

7/29: 89/71 (+2)

7/30:

7/31:

 

JFK:

7/24: 88/70 (+3)

7/25: 70/63 (-9)

7/26: 84/64  (-2)

7/27: 81/68 (-1)

7/28: 78/68 (-3)

7/29: 84/73 (+2)

7/30:

7/31:

 

New brunswick:

7/24: 83/64 (-2)

7/25: 69/64 (-9)

7/26: 84/65 (0)

7/27: 86/64 (0)

7/28: 84/64 (-1)

7/29: 87/62 (+0)

7/30:

7/31:

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Yesterday was a 0.0

Today looks like a -2 or -3

Tomorrow similar.

That should leave NYC at about +3.1 to +3.3 for the month of July.

 

The park running abuot 1/2 a degree behind other sites.

 

NYC:  +3.4

LGA: +4.2

EWR: +4.0

JFK: +3.9

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The NAEFS which had earlier been on the warm train for the Northeast have now trended toward the other guidance w/ a normal to below normal temp regime to the coast. I still think its a bit too bullish on the WAR for the New England coast. The ECMWF ensembles certainly led the way with this pattern reversal to troughiness in the Northeast.

 

zkomjn.png

 

 

Iso, good call with the late July/early august cooldown. I had thought we'd ride closer to normal/above normal similar to yesterday.   Certainly the repetition since Jun 20th of the WAR expansion  broke last week and the timing between western Atlantic ridging has been prolonged.  It will be interesting to see how cool we get through the first 10 days of August.  I do think there is continued hinting and trends in the latest guidance that trough backs into the lakes and a more humid/southerly flow develops between 8th and 10th.  Whether this actually materializes and how long it persists before we see more of the WAR toward mid/end of the  month will determine how August avaerages overall.     

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Man the next two weeks are going to be September like!

 

I wouldn't go that far unless you mean very early September like Labor Day time. It's probably just going to end up near normal for this time of year, maybe slightly below for a couple days. 

 

Either way this feels like a dream compared to 10 days ago. 

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I wouldn't go that far unless you mean very early September like Labor Day time. It's probably just going to end up near normal for this time of year, maybe slightly below for a couple days.

Either way this feels like a dream compared to 10 days ago.

Not to often do we get weather like this, during this time of the year. Lately it has been a torch the last few years. Going to be great

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Iso, good call with the late July/early august cooldown. I had thought we'd ride closer to normal/above normal similar to yesterday.   Certainly the repetition since Jun 20th of the WAR expansion  broke last week and the timing between western Atlantic ridging has been prolonged.  It will be interesting to see how cool we get through the first 10 days of August.  I do think there is continued hinting and trends in the latest guidance that trough backs into the lakes and a more humid/southerly flow develops between 8th and 10th.  Whether this actually materializes and how long it persists before we see more of the WAR toward mid/end of the  month will determine how August avaerages overall.     

 

Thanks man. You were on fire with the early/mid July pattern. I agree that the WAR will eventually retrograde back into the picture. My thinking at this point is we'll start the transition by the middle/latter part of August w/ a warmer than normal regime resuming possibly the last 1/3 of the month.

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First 90 degree shut out for Newark 8-1 to 8-7 since 2004 in forecast.

http://www1.ncdc.noaa.gov/pub/orders/IPS-7599C5EC-B577-402B-A8BF-A53FB646A345.pdf

NEWARK, NJ

SUNNY SUNNY TSTRMS PTCLDY SUNNY SUNNY SUNNY

/84 66/84 69/82 70/85 70/84 68/83 67/81

/00 00/10 10/60 70/20 10/10 10/20 10/10

M7D8.gif

temp.gif

this pattern is very reminiscent of 1994.. very warm July followed by a cool beginning of August.. IIRC, very chilly morning of 8/7

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this pattern is very reminiscent of 1994.. very warm July followed by a cool beginning of August.. IIRC, very chilly morning of 8/7

 

Yeah, the WAR shifted to the east that August like the current forecast.

 

 

 

 

 

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The GFS, ECMWF and their ensembles means, have actually been backing off the extent of the trough over the Northeast, in the 8-10 day period. The cool, dry air mass around Aug. 5th is more transient. With a big ULL digging into the Upper Midwest/Great Lakes. If this is correct, it could turn warmer, humid and unsettled again around the Aug 8th or so.:

 

Looks like 12z went back to a prolonged troughy period again.

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The cooler to seasonable airmass could last a while even if models show it breaking down in the long range. Models often do that Day 8-10 and patterns usually take longer to change. I wouldn't be surprised if the cooler pattern lasts a good 2/3 of August and I certainly don't expect to see anything near as hot as in mid July moving forward. 

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The cooler to seasonable airmass could last a while even if models show it breaking down in the long range. Models often do that Day 8-10 and patterns usually take longer to change. I wouldn't be surprised if the cooler pattern lasts a good 2/3 of August and I certainly don't expect to see anything near as hot as in mid July moving forward. 

 

 

Agree. I don't think we'll see a transition until 8/15-20 at the earliest and by that point the pattern will probably be more humid than hot. Long duration 90s are likely over for the summer IMO.

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KFRG sounding indicates not much in the way of severe weather tomorrow with the indication of the tall/skinny cape look to the sounding suggest mostly heavy rainfall.

 

130731211606.gif

 

 

The PW's have been among the highest that we have seen for July in the Northeast with record rainfall

in places like Philly and Eastern CT.

 

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