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Jan/Early Feb Medium/Long Range Discussion Part 3


WinterWxLuvr
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DT update 

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WORKING HYPOTHESIS so if we accept the idea that the northern Jet Stream is overdone then the southern LOW is not along the Gulf Coast on FEB 4-5 . It will be back in the Tennessee Valley and the big snowstorm threat is still alive.  IMAGE 2 shows the individual 30 members of the 12z GFS Ensemble . Of the 30 members ….13 of them show a significant surface LOW that would bring significant snowfall to the Middle Atlantic region. some of these Solutions also include the northern Mid-Atlantic and New England. Some do not. Given the GFS propensity to overdo the northern branch and suppress southern systems 13 out of 30 is almost 50% which is not bad.

 

 

GE9T897WMAAYHSw.jpeg.2f2095638aaf9ee9f8a61ee48f3302c8.jpeg

 

GE9T_KCWsAAfirV.thumb.png.16a01205ee1c7d1a2cd2851a40e7552d.png

 

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19 minutes ago, frd said:

This would be a plus to hopefully extend or magnify the upcoming pattern change. 

 

 

Imo This gets less and less relevant the deeper into winter we get. There's always a lag anyway...something in Feb we may not see the effect of until March (a la 2018). I tune this out after awhile

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25 minutes ago, frd said:

DT update 

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9,047
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WORKING HYPOTHESIS so if we accept the idea that the northern Jet Stream is overdone then the southern LOW is not along the Gulf Coast on FEB 4-5 . It will be back in the Tennessee Valley and the big snowstorm threat is still alive.  IMAGE 2 shows the individual 30 members of the 12z GFS Ensemble . Of the 30 members ….13 of them show a significant surface LOW that would bring significant snowfall to the Middle Atlantic region. some of these Solutions also include the northern Mid-Atlantic and New England. Some do not. Given the GFS propensity to overdo the northern branch and suppress southern systems 13 out of 30 is almost 50% which is not bad.

 

 

GE9T897WMAAYHSw.jpeg.2f2095638aaf9ee9f8a61ee48f3302c8.jpeg

 

GE9T_KCWsAAfirV.thumb.png.16a01205ee1c7d1a2cd2851a40e7552d.png

 

Why didnt you show the 18z?  It was out when you posted this.

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1 hour ago, Maestrobjwa said:

Imo This gets less and less relevant the deeper into winter we get. There's always a lag anyway...something in Feb we may not see the effect of until March (a la 2018). I tune this out after awhile

You must have missed the part where fred says “hopefully extend or magnify the upcoming pattern change.”

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Hi everyone!  Thought I’d simply share some of the statistical research I’ve been conducting most recently…examining the correlation between El Niño and seasonal snowfall in the Eastern U.S.

Here’s the link to the post showing how each of the 5 selected Mid-Atlantic cities all saw a VERY significant decrease in seasonal snowfall during strong El Niño episodes.  
 

https://x.com/tbrite89/status/1751700478864265580?s=20

On the flip side, a few of the largest snowstorms occurred during a strong El Niño season such as 2016 and 1983.  
 

In essence, strong El Niño seasons are generally boom or bust and highly reliant on a KU event to achieve the climatological average.   

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1 hour ago, ncforecaster89 said:

Hi everyone!  Thought I’d simply share some of the statistical research I’ve been conducting most recently…examining the correlation between El Niño and seasonal snowfall in the Eastern U.S.

Here’s the link to the post showing how each of the 5 selected Mid-Atlantic cities all saw a VERY significant decrease in seasonal snowfall during strong El Niño episodes.  
 

https://x.com/tbrite89/status/1751700478864265580?s=20

On the flip side, a few of the largest snowstorms occurred during a strong El Niño season such as 2016 and 1983.  
 

In essence, strong El Niño seasons are generally boom or bust and highly reliant on a KU event to achieve the climatological average.   

Interesting stats.

I'm surprised Philly's mod Nino average (52.2") is a lot higher than Baltimore's (35.6"). I wonder which winters made the difference, because 2002-03 and 2009-10 both seemed very close.

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12 minutes ago, Fozz said:

Interesting stats.

I'm surprised Philly's mod Nino average (52.2") is a lot higher than Baltimore's (35.6"). I wonder which winters made the difference, because 2002-03 and 2009-10 were more or less very similar in both cities.

Hi Fozz, 

Here are the specific seasonal snowfall totals….during moderate El Niño episodes….for the two respective cities.  

Comparatively, the years of 1912 and 1914 stand out whereby the snowfall received in Philadelphia far exceeded the amounts recorded in Baltimore.  Otherwise, they’re pretty close, overall.             

Philadelphia, PA: 

2010: 1.5 67.3    

1987: 1.2 28.2    

1969: 1.1 27.9    

1966:1.4 46.2 

1964: 1.1 27.5    

1914: 1.1 94.1   

1912: 1.4. 73.9 


365.1” (52.2”) 

 

Baltimore, MD:

2010: 1.5 58.1   

1987: 1.2 41.7  

1969: 1.1 23.3  

1966: 1.4 53.2  

1964: 1.1 42.9  

1914: 1.1 26.0  

1912: 1.4 27.8  

1906: 1.3 19.5

1905: 1.1 27.6  

 

320.1” (35.6”) 

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7 minutes ago, ncforecaster89 said:

Hi Fozz, 

Here are the specific seasonal snowfall totals….during moderate El Niño episodes….for the two respective cities.  

Comparatively, the years of 1912 and 1914 stand out whereby the snowfall received in Philadelphia far exceeded the amounts recorded in Baltimore.  Otherwise, they’re pretty close, overall.             

Philadelphia, PA: 

2010: 1.5 67.3    

1987: 1.2 28.2    

1969: 1.1 27.9    

1966:1.4 46.2 

1964: 1.1 27.5    

1914: 1.1 94.1   

1912: 1.4. 73.9 


365.1” (52.2”) 

 

Baltimore, MD:

2010: 1.5 58.1   

1987: 1.2 41.7  

1969: 1.1 23.3  

1966: 1.4 53.2  

1964: 1.1 42.9  

1914: 1.1 26.0  

1912: 1.4 27.8  

1906: 1.3 19.5

1905: 1.1 27.6  

 

320.1” (35.6”) 

Out of curiosity, where did you get your Philly data from?

I looked up the numbers and found much lower numbers for those two seasons which look a lot more believable.

1914: 34.2"

1912: 23.8"

https://www.weather.gov/wrh/Climate?wfo=phi

 

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8 minutes ago, ncforecaster89 said:

Hi Fozz, 

Here are the specific seasonal snowfall totals….during moderate El Niño episodes….for the two respective cities.  

Comparatively, the years of 1912 and 1914 stand out whereby the snowfall received in Philadelphia far exceeded the amounts recorded in Baltimore.  Otherwise, they’re pretty close, overall.             

Philadelphia, PA: 

2010: 1.5 67.3    

1987: 1.2 28.2    

1969: 1.1 27.9    

1966:1.4 46.2 

1964: 1.1 27.5    

1914: 1.1 94.1   

1912: 1.4. 73.9 


365.1” (52.2”) 

 

Baltimore, MD:

2010: 1.5 58.1   

1987: 1.2 41.7  

1969: 1.1 23.3  

1966: 1.4 53.2  

1964: 1.1 42.9  

1914: 1.1 26.0  

1912: 1.4 27.8  

1906: 1.3 19.5

1905: 1.1 27.6  

 

320.1” (35.6”) 

The Philadelphia area is a little off.  The yearly snowfall total for 2009-2010 is below as reported at Philadelphia International Airport what's 11.4"?

2009–2010   78.7
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16 minutes ago, ncforecaster89 said:

Hi Fozz, 

Here are the specific seasonal snowfall totals….during moderate El Niño episodes….for the two respective cities.  

Comparatively, the years of 1912 and 1914 stand out whereby the snowfall received in Philadelphia far exceeded the amounts recorded in Baltimore.  Otherwise, they’re pretty close, overall.             

Philadelphia, PA: 

2010: 1.5 67.3    

1987: 1.2 28.2    

1969: 1.1 27.9    

1966:1.4 46.2 

1964: 1.1 27.5    

1914: 1.1 94.1   

1912: 1.4. 73.9 


365.1” (52.2”) 

 

Baltimore, MD:

2010: 1.5 58.1   

1987: 1.2 41.7  

1969: 1.1 23.3  

1966: 1.4 53.2  

1964: 1.1 42.9  

1914: 1.1 26.0  

1912: 1.4 27.8  

1906: 1.3 19.5

1905: 1.1 27.6  

 

320.1” (35.6”) 

That’s a wild difference in 1914. I wonder why Philly received so much more snow 

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23 minutes ago, Fozz said:

Out of curiosity, where did you get your Philly data from?

I looked up the numbers and found much lower numbers for those two seasons which look a lot more believable.

1914: 34.2"

1912: 23.8"

https://www.weather.gov/wrh/Climate?wfo=phi

 

Whoa!  That’s a HUGE difference in totals. I relied entirely on the validity of the stats compiled at this particular website:

https://www.extremeweatherwatch.com/cities/philadelphia/most-yearly-snow

Not sure where they got their numbers as they appear to be vastly inaccurate.   

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4 minutes ago, ncforecaster89 said:

Whoa!  That’s a HUGE difference in totals. I relied entirely on the validity of the stats compiled at this particular website:

https://www.extremeweatherwatch.com/cities/philadelphia/most-yearly-snow

Not sure where they got their numbers as they appear to be vastly inaccurate.   

Makes sense. A lot of those numbers are clearly way off. It's always a good idea to know where your data is coming from. That website doesn't seem to show a source for it.

NWS will always be far more trustworthy.

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9 minutes ago, Fozz said:

They did not. His Philly data is definitely off.

No doubt I’m going to have to go back through each individual year to verify the accuracy of the data I compiled.  
 

Thank you so much for catching those inaccuracies.  I shouldn’t have relied on second-hand sources.  Simply trusted the data…as they had already compiled the yearly totals for virtually every observing site in the nation.   Thereby, saving myself a tremendous amount of time. 
 

I verified their totals for my home city (Wilmington, NC) and they matched perfectly.  With that, I wrongly assumed the rest of the data for the other respective cities were entirely accurate as well.  

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7 hours ago, Allsnow said:

Yup..better pac now kicked closer to the 15th. Gefs and eps dragging their feet with kicking the trough out 

Dude maybe go back and post in your forum. Nobody really cares for your nonsensical posts. 

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