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February 2016 Forecasts/Disco/Obs


snowman19

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Moderate to occasional heavy rain all day here in Hunterdon County, plentiful fog. Snowpack being absolutely annihilated.

Storm totals seem certain to bust well high of the forecast of around 0.70 in especially with this next slug of rain coming through.

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Moderate to occasional heavy rain all day here in Hunterdon County, plentiful fog. Snowpack being absolutely annihilated.

Storm totals seem certain to bust well high of the forecast of around 0.70 in especially with this next slug of rain coming through.

Not surprised about the snowpack. Fog and warm rain are like kryptonite to it.
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CFSv2 Weeklies show just one window of opportunity, the 7 day period centered around the 13th.   Otherwise the 3 other weekly periods are all at least +4.   

Since a SSWEvent seems to be underway and in a favorably part of the stratosphere for us, does anyone know if this particular long range product is already aware of this SSWE and has considered it, but still produces this crummy result?

http://www.cpc.ncep.noaa.gov/products/people/mchen/CFSv2FCST/weekly/

 

Well at any rate the next 7 days are about +5 to +6.

http://www.nws.noaa.gov/cgi-bin/mos/getmex.pl?sta=KACY&sta=KEWR&sta=KNYC&sta=KJFK&sta=KLGA

 

This should put us @+8 or so, by the morning of the 11th.

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CFSv2 Weeklies show just one window of opportunity, the 7 day period centered around the 13th.   Otherwise the 3 other weekly periods are all at least +4.   

Since a SSWEvent seems to be underway and in a favorably part of the stratosphere for us, does anyone know if this particular long range product is already aware of this SSWE and has considered it, but still produces this crummy result?

http://www.cpc.ncep.noaa.gov/products/people/mchen/CFSv2FCST/weekly/

 

Well at any rate the next 7 days are about +5 to +6.

http://www.nws.noaa.gov/cgi-bin/mos/getmex.pl?sta=KACY&sta=KEWR&sta=KNYC&sta=KJFK&sta=KLGA

 

This should put us @+8 or so, by the morning of the 11th.

It's generally forecast to unfold at 10 mb and above. There's still no guidance suggesting that it will propagate downward, but it's still a little soon to be sure about that aspect. Moreover, propagation would take some time to unfold, so the impact on blocking wouldn't be immediate (it might develop toward the end of February or early March if the typical timeframe is involved.). Wave 2 is forecast to break in the highest levels of the stratosphere and that may be the reason most of the warming is forecast to occur where it is.

 

The CFSv2 is an atmosphere-ocean-ice coupled model. So, in theory, were the stratosphere warm sufficiently to erode, split or displace the polar vortex, one should begin to see that outcome showing up on the CFSv2's week 4 forecasts. FWIW, Arctic sea ice was more than 200,000 square kilometers below the previous daily record for 2/2. Another record appears very likely when today's data is released tonight.

 

Incidentally, the last two runs of the GFS have turned cold throughout the extended range. That's quite different from the weeklies that had been touting warmer anomalies after the possible Arctic outbreak. That's still way out there, but at least there's a piece of guidance that argues against assuming a rapid return of much warmer conditions. Hopefully, that colder guidance will be reaffirmed in subsequent runs. 

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Just a few more inches necessary for NYC to go 40-30" on the winter.

A normal or above normal February temperature finish would lock the 

DJF 40 degree reading in. NYC is already well ahead of the 3 other 40 degree

winters in the snowfall department. 

 

15-16....42.7....27.2"...so far.

01-02....41.5......3.5"

11-12....40.5......7.4"

31-32....40.1".....5.3"

I would think NYC could get at least 2.8 inches of snow in the next 2 weeks given the pattern...maybe even 12.8 to get to 40-40

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40 degree winters are normal further south in the Midatlantic, While 30" or higher snowfall is average 

further north over the Northeast. I wonder if a 40-30 or 40-40 winter ever occurred close to sea level

in the US?

There's at least one: 1979-80 in Norfolk

 

Seasonal snowfall: 41.9"

December-February mean temperature: 40.1°

December-March mean temperature: 41.7°

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With the GFS showing continued cold after mid-month and the ECMWF oscillating between cold and warm anomalies in its extended range, it's still premature to assume that the very warm weekly guidance for the period beyond mid-February will necessarily verify. A lot will depend on whether blocking is sustained or redevelops. The most recent GFS ensembles suggest more blockiness than had been shown even a few days ago. Hence, any warm up after mid-month relative to normal, if it occurs, may be delayed or even short-lived. Should the blocking break down as had previously been indicated, then the prospects of a sustained warmer period would increase.

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