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August 2013 Observations And Discussions


bluewave

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Day 15 of the Cooldown - shuould moderate back to and above normal today thru sat before next cooldown which should peak 8/13 - 8/15. 

 

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: 83/65 (-2)

7/31: 83/66 (-3)

8/1: 75/68 (-5)

8/2: 87/67 (+1)

8/3: 80/69 (-2)

8/4: 82/64 (-4)

8/5: 80/62 (-6)

8/6: 81/61 (-6)

8/7:  80/69 (-2)

 

 

NYC:

7/24: 83/68 (-1)

7/25: 68/64 (-11)

7/26: 83/65 (-3)

7/27: 82/70 (-1)

7/28: 78/70 (-3)

7/29: 85/69 (0)

7/30: 83/67 (-2)

7/31: 8/3 / 67 (-2)

8/1: 76/66 (-6)

8/2: 83/67 (-2)

8/3: 78/68 (-3)

8/4: 80/66 (-3)

8/5: 78/62 (-6)

8/6: 82/64 (-3)

8/7: 80/70 (-1)

 

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: 82/70 (-2)

7/31: 82/71 (-1)

8/1: 79/69 (-4)

8/2: 86/70 (+0)

8/3: 80/71 (-2)

8/4: 81/69 (-3)

8/5: 79/64 (-6)

8/6: 82/67 (-2)

8/7: 82/72 (+0)

 

 

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: 85/67 (+0)

7/31: 82/68 (-1)

8/1: 77/68 (-3)

8/2: 85/68 (+1)

8/3: 78/70 (-2)

8/4: 83/67 (-1)

8/5: 80/64 (-4)

8/6: 80/64 (-4)

8/7: 80/70 (-1)

 

 

New Brunswick:

7/24: 83/64 (-2)

7/25: 69/65 (-9)

7/26: 84/65 (0)

7/27: 86/64 (0)

7/28: 84/65(0)

7/29: 87/57 (-3)

7/30: 84/58 (-4)

7/31: 83/68 (+1)

8/1: 72/63 (-7)

8/2: 86/64 (+0)

8/3: 79/59 (-5)

8/4: 81/54 (-7)

8/5: 81/56 (-6)

8/6: 82/63 (-2)

8/7: 80/64 (-2)

00Z guidance showed well above normal temperatures (probably more 90+ days here) starting sometime between August 17th or 19th with a huge ridge in the eastern US. But the GFS keeps going back & forth on this idea while the Euro timing of it seems extremely uncertain. The details remain unclear.

WX/PT

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00Z guidance showed well above normal temperatures (probably more 90+ days here) starting sometime between August 17th or 19th with a huge ridge in the eastern US. But the GFS keeps going back & forth on this idea while the Euro timing of it seems extremely uncertain. The details remain unclear.

WX/PT

 

 

Any strong heat of more than 1 day of 90F temperatures should wait until at least several days after that IMO. The 12z GFS brings a strong cool shot into the Northeast for the 13th-18th period and although we moderate to near normal by the following week, it's not a torch pattern yet. The GFS ensembles originally though the WAR would be strong in the East for August 1st-7th and NYC is -3.5 on the month, so we see how that idea verified. The Euro ensembles have been superior in this pattern regarding the handling of the WAR and the Northeast trough. They don't really reverse the Northeast trough through 240 hours, and anything beyond that is pretty uncertain at this point.

 

Still, I believe the analogs, pattern persistence, and SSTA of the Atlantic favor the return to the mid level ridge in the NE for September, possibly late August.

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Appreciate the posts, being that the models (GFS and Euro) only go out 384 hrs how do you guys see this warm up end of month? Im new to watching models and trying to understand the rationale.  Are we assuming that currently we are going through the same pattern as we saw in June? And toward the end of the month we should return to the pattern seen in July?  Thanks. 

 

 

No problem. The pattern from late June-late July was historic in the sense that we rarely see such high humidity for 3-4 consecutive weeks. In all likelihood the high dew point air will be prevalent during September but I doubt it will be as persistent or long lasting as June 20th-July 20th. We'll probably see more interruptions of cooler air as is typical once we get to mid/late September. I also strongly doubt that we'll see a string of days in the 95-100F range for end of August--September, and it's more probable that we have a bunch of low 90s days, maybe some mid 90s depending upon the strength of the ridge. We'll have to wait to see on that.

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watching remote from the GOM.  Looks like clouds/showers will kill any chance of 90 today but there could be some longer breaks should see temps climb to the mid/upper 80s.  Tomorrow looks like the best shot at 90s since Jul 23.   It will depend on how much we can clear. 

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