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The Dog Days of Summer: August 2015 Discussion


dmillz25

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Overnight guidance with an interesting split between the warmer GFS and more troughy ECM for the 8/24 - 8/26 period.  We've seen this disagreement recently with a solution more towards the warmer eventually playing out.  GFS/ECM will prove to have been too hot in the 8/21 - 8/23 timeframe from a few days ago, thanks in part to hung up front but steamy few days in route.

 Overall it continues to look above normal with any trough transient and any cooling more focused to the north as heights continue to bounce up into the mid section and EC with troughing persistent into the WC.  If not arm to hot days its by humid southerly flow over the next  week or so.  The one thing is it does in fact look wetter beginning tomorrow.

 

8/18 : widespread 90s continues

8/19 -  8/22 : Storms, potential heavy rain.  Hung up front.  Humid

8/23 - 8/25 : Warmer than normal , potential for 90s in warmer spots 8/24

8/26 - beyond : Overall warmer than normal, potential late Aug heat (8/27)  

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Overnight guidance with an interesting split between the warmer GFS and more troughy ECM for the 8/24 - 8/26 period.  We've seen this disagreement recently with a solution more towards the warmer eventually playing out.  GFS/ECM will prove to have been too hot in the 8/21 - 8/23 timeframe from a few days ago, thanks in part to hung up front but steamy few days in route.

 Overall it continues to look above normal with any trough transient and any cooling more focused to the north as heights continue to bounce up into the mid section and EC with troughing persistent into the WC.  If not arm to hot days its by humid southerly flow over the next  week or so.  The one thing is it does in fact look wetter beginning tomorrow.

 

8/18 : widespread 90s continues

8/19 -  8/22 : Storms, potential heavy rain.  Hung up front.  Humid

8/23 - 8/25 : Warmer than normal , potential for 90s in warmer spots 8/24

8/26 - beyond : Overall warmer than normal, potential late Aug heat (8/27)

good summary. Weenie question, but I'm camping Thur-Sun in South central CT-any guesses as to where the front hangs up during that time. (bringing my tarp!)
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Overnight guidance with an interesting split between the warmer GFS and more troughy ECM for the 8/24 - 8/26 period. We've seen this disagreement recently with a solution more towards the warmer eventually playing out. GFS/ECM will prove to have been too hot in the 8/21 - 8/23 timeframe from a few days ago, thanks in part to hung up front but steamy few days in route.

Overall it continues to look above normal with any trough transient and any cooling more focused to the north as heights continue to bounce up into the mid section and EC with troughing persistent into the WC. If not arm to hot days its by humid southerly flow over the next week or so. The one thing is it does in fact look wetter beginning tomorrow.

8/18 : widespread 90s continues

8/19 - 8/22 : Storms, potential heavy rain. Hung up front. Humid

8/23 - 8/25 : Warmer than normal , potential for 90s in warmer spots 8/24

8/26 - beyond : Overall warmer than normal, potential late Aug heat (8/27)

the EPS has a much flatter trough. the op run has been too aggressive with ne canadian troughs all summer
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good summary. Weenie question, but I'm camping Thur-Sun in South central CT-any guesses as to where the front hangs up during that time. (bringing my tarp!)

 

Wish i knew Brian.  Either way im sure youll have fun and a decent amount of time without rain.  Enjoy

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the EPS has a much flatter trough. the op run has been too aggressive with ne canadian troughs all summer

 

True, itll be interesting to see how warm we can get for August (overall monthly departures)

 

11AM ROund up

 

HPN: 84

TEB: 82

NYC: 85

EWR: 87

LGA: 86

JFK: 82

ISP: 80

New Brunswick: 86

BLM: 84

TTN: 82

PHL: 83

ACY: 84

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We've got a bingo. The general steering currents suggest that this should be a highly impact-full system for at least the islands, and then possibly other land masses down the road.

144842W5_NL_sm.gif

I haven't looked at this threat on guidanxe but you'd imagine the steering currents are arguing west maybe this could come in south of the bigger islands. Anyway it'll be interesting to see where it tracks over the next few days

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The tropical system should survive fine the next 5-7 days. Most of the latest guidance brings it up to a low end cat 2 in five days with steady strengthening. After that it will all come down to the strength of the building ridge to the North. The global models want to bend the track back to the West, Southwest which would bring a landfall into the Lesser Antilles this weekend. Thereafter, a track into the Eastern Caribbean would bring almost certain death with the near record shear occurring as a result of the El Nino.  If the system is allowed to escape a bit North, the 00z EPS mean maintains the ridge all the way into the Bahamas opening the door for a Southeast US impact. The third option is that it runs a ground trying to island hop and the system eventually gets torn apart by the mountains in about 10 days.

 

04L_intensity_latest.png

 

ecmwf-ens_mslpa_sd_atl_11.png

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