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September 2014


Rtd208

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Goodbye summer! It was nice knowing you!

Yes thank goodness. While we will still see some warmer and more humid days like late this week the true summer heat and humidity is done until next May-July. Just looking at the upcoming forecast shows a stunning change when you go from a +10 or greater day to a minus 5 or so. Next weekend looks really cool especially during the nights/mornings with a shot at 40s for lows. True fall weather will be here before you know it. 

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Good to see the -EPO/+PNA holding steady. Our EL Nino is slowly starting to round into shape. The only other piece of the puzzle will be if the Atlantic cooperates this winter… -NAO/-AO. If so, we'll be locked and loaded. :gun:

This winter is looking more and more tantalizing as we get closer by the day. I agree we get the -AO/NAO to go along with the -EPO/+PNA and weak el nino it wont be if we get snow but how much come december through march ;)

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Looking ahead at the latest guidance we should see the brunt of any cool remain to our west this week (through the 12th).  It looks  close to normal with clouds and some rain mon - wed (9/8 - 9/10).  Ridge builds back by Thursday and Friday (9/11 - 9/12) with increasing humidity and pending on sun, we should see temps push into the low or mid 80s.  Some of the warmer spots may touch higher if its mainly sunny.  Cold front and much cooler airmass arrives next weekend (9/13) and it looks to remain below normal into the week of the 9/15th.  Beyond there, the Ecm rebuilds heights and warmth towards the 16th with a deep trough and  cool airmass into the plains/GL.

 

We'll see where today's guidance goes for the period 9/15 and beyond

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This winter is looking more and more tantalizing as we get closer by the day. I agree we get the -AO/NAO to go along with the -EPO/+PNA and weak el nino it wont be if we get snow but how much come december through march ;)

when is the last time we had all the indicies favorable here for the majority of the winter ? and what happened ? anyone ?

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The euro agrees somewhat, haven't looked at the QPF maps tho. It's west of the GFS.

People need to stop making serious reference of bad models or models showing their notorious biases. (NAM, DGEX, GGEM, JMA). For a hobbyist it may be excusable but for a meteorologist it isn't (ref. Bastardi).

LOWS MOVING UP/OFFSHORE THE EAST COAST

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PREFERENCE: GFS/ECMWF/UKMET COMPROMISE

CONFIDENCE: SLIGHTLY ABOVE AVERAGE

THE 12Z NAM/00Z CANADIAN ARE STRONGER ALOFT WITH THE PARENT

SHORTWAVE -- THEIR USUAL BIAS. THIS SYSTEM IS EMBEDDED WITHIN

QUICK FLOW, WHICH SHOULD LIMIT ITS AMPLITUDE. A COMPROMISE OF THE

12Z GFS/00Z ECMWF/00Z UKMET IS BEST SUPPORTED BY THE 06Z GEFS/00Z

ECMWF ENSEMBLE MEAN SOLUTIONS, AND ARE PREFERRED WITH SLIGHTLY

ABOVE AVERAGE CONFIDENCE.

www.wpc.ncep.noaa.gov/html/model2.shtml...

www.wpc.ncep.noaa.gov/h5pref/h5pref.shtml...

ROTH

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People need to stop making serious reference of bad models or models showing their notorious biases. (NAM, DGEX, GGEM, JMA). For a hobbyist it may be excusable but for a meteorologist it isn't (ref. Bastardi).

LOWS MOVING UP/OFFSHORE THE EAST COAST

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PREFERENCE: GFS/ECMWF/UKMET COMPROMISE

CONFIDENCE: SLIGHTLY ABOVE AVERAGE

THE 12Z NAM/00Z CANADIAN ARE STRONGER ALOFT WITH THE PARENT

SHORTWAVE -- THEIR USUAL BIAS. THIS SYSTEM IS EMBEDDED WITHIN

QUICK FLOW, WHICH SHOULD LIMIT ITS AMPLITUDE. A COMPROMISE OF THE

12Z GFS/00Z ECMWF/00Z UKMET IS BEST SUPPORTED BY THE 06Z GEFS/00Z

ECMWF ENSEMBLE MEAN SOLUTIONS, AND ARE PREFERRED WITH SLIGHTLY

ABOVE AVERAGE CONFIDENCE.

www.wpc.ncep.noaa.gov/html/model2.shtml...

www.wpc.ncep.noaa.gov/h5pref/h5pref.shtml...

ROTH

Whatever man, it isn't a non-event for everyone. Here is Mount Holly's disco

 

 

 

MONDAY-TUESDAY...ANY WAY YOU LOOK AT IT EXCEPT THE BENIGN GGEM...

A PERIOD OF NASTY EARLY SEPTEMBER WX SEEMS DESTINED FOR AT LEAST

COASTAL DE IF NOT MOST OF THE NJ SHORE. TOO MUCH EASTERLY LOW LVL

GRADIENT INFLOW IS ENSEMBLED (3SD ABOVE NORMAL 850 INFLOW BY LATE

MONDAY) ..COURTESY OF A NICE CHILLY STRONG HIGH OVER THE MARITIMES

AND LOW PRESSURE OVER GEORGIA. THE ARRIVAL OF THAT CHILLY AIR OUT

OF THE CANADIAN MARITIMES IS MODIFIED BY THE WARMER ATLC WATERS

BUT STILL THERE SHOULD BE SUBSTANTIAL TRANSFER OF WIND UP TO 925

MB DUE TO STEEPER LOW LVL LAPSE RATES. MEANWHILE PULSES OF

INSTABILITY LEAKING NORTHWARD ALOFT AND PWAT OF OVER 1.5 INCHES

MODELED BY THE 03Z/7 SREF FROM THE I95 CORRIDOR SEWD...SUGGESTS WE

MAY BE LOOKING AT SUBSTANTIAL COASTAL RAINFALL. HAVE THUNDER IN

THE GRIDS PER THE SWI OF THE ECMWF. SEVERAL 00Z/7 MODELS ARE

TRYING TO PAINT VERY LARGE AMOUNTS OF RAIN NOT TOO FAR TO OUR

SOUTH (3-10 INCHES). THIS LOW PRESSURE SYSTEM NEEDS A LITTLE

RESPECT AND MONITORING FOR ITS POTENTIAL IMPACT ON OUR COASTAL

AREA.

THE NORTHWEST EXTENT OF THE SHOWER BANDS IN OUR FORECAST AREA IS

UNKNOWN AND FOR NOW... WE`VE ABOVE AVG CONFIDENCE IN THE FCST

DETAILS I95 SEWD BUT BELOW AVG ON WHEN AND WHETHER OR NOT IT WILL

RAIN IN NE PA AND NNJ.

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