NorthShoreWx

Mmmmm, perdy. Lock it in.

Is this how you met: "Read any good skew-T's lately"?

Are you a bot?

I kind of get the rationale for -3C being a threshold proxy for enduring winter snow cover, but what is behind the 64.4 for tropical? (apologies that we are mixing °C and °F)

I agree. But it's not colder.

I'm not sure everyone would agree. By the way, the two charts you posted show NYC's warmest period and one of Raleigh's coldest. It still says something about how NYC has warmed, but is a stretch for the subtropical argument.

Those places are not warmer (except for the subway grate scenario)

No denying the recent winter warmth in the park, but I'm not sure where you will find a more urban environment. Maybe on top of a subway vent.

Koppen may be useful for some sort of macro-climate modeling, but not for much else. I think the "subtropical" nomenclature is off. As a speaker of English it does nothing for me. I'll take the USDA hardiness zones, unless they've been updated to make some political point.

Could be. I'll check that or when I get a moment. I think there were some negative mid-teens in places here around 1984 and 2009 as well, but usually my memory of radiational cooling fades as fast as the temperature rises when the wind picks up.

That looks like a MA blockbuster with snow to mix and dry slot NYC to BOS. I guess I'm still a little disappointed about 1993

The Jan 1961 period is when BNL recorded its lowest ever at -23⁰ F (-31C). Surprised that KFOK only got down to -1 during that period.

Today's record low for Islip is -4 from 1968.

Corresponds with the persistent cloud cover over the east end. https://weather.cod.edu/satrad/?parms=local-Rhode_Island-02-48-1-100-1&checked=map&colorbar=undefined

Attention complaint department: What's with the Koppen Climate classifications? Calling NYC "subtropical" seems like poor nomenclature. What is the utility of having NYC in the same climate classification (humid subtropical climate) as Orlando? If that's true, why are there snowbirds?

Nooo...NYC got 4"+ in December. Doesn't that mean the rest of this winter is a burial?

Wondering if he is using something like chat GPT to generate his posts. Most of them seem to poorly reflect something or other that has been posted previously in this thread and to change subtly over time. Either way, the outcome is a synthesis of nonsense. Edit: That may have been a strong word, but hopefully his posts will improve.

Same here, except that most of the additional area was well away from the Northeast.

My best guess is, because Ohio, Kentucky, Tennessee, Alabama, Mississippi, Louisiana and Texas. Is that really northeast?

If its a Northeast Snowfall Impact rating, why does the storm of January 19-21, 1978 rank higher than the famous blizzard a little over 2 weeks later:

Finally, since its a slow wx news day, here is how my backyard fared in every NESIS event since 1/1/1996 as listed at https://www.ncei.noaa.gov/access/monitoring/rsi/nesis Rank Start End NESIS Cat Description Smithtown Snowfall 2 1/6/1996 1/8/1996 11.78 5 Extreme 22.3 59 3/31/1997 4/1/1997 2.29 1 Notable 3.0 56 1/24/2000 1/26/2000 2.52 2 Significant 5.3 58 12/30/2000 12/31/2000 2.37 1 Notable 11.0 87 1/19/2001 1/21/2001 1.12 1 Notable 4.0 57 1/2/2003 1/5/2003 2.49 1 Notable 2.2 82 2/6/2003 2/8/2003 1.3 1 Notable 6.8 6 2/15/2003 2/18/2003 7.5 4 Crippling 18.8 75 3/3/2003 3/6/2003 1.54 1 Notable 5.7 51 12/14/2003 12/16/2003 2.77 2 Significant 4.9 63 1/27/2004 1/28/2004 2.03 1 Notable 13.5 9 1/21/2005 1/24/2005 6.8 4 Crippling 14.4 50 2/28/2005 3/2/2005 2.84 2 Significant 7.2 34 2/12/2006 2/13/2006 4.1 3 Major 13.3 16 2/12/2007 2/15/2007 5.63 3 Major 1.3 54 3/15/2007 3/18/2007 2.54 2 Significant 4.8 85 12/19/2008 12/20/2008 1.25 1 Notable 7.3 80 1/17/2009 1/19/2009 1.32 1 Notable 3.1 73 3/1/2009 3/3/2009 1.59 1 Notable 11.5 37 12/18/2009 12/21/2009 3.99 2 Significant 17.0 69 1/29/2010 1/30/2010 1.66 1 Notable 0.0 30 2/4/2010 2/7/2010 4.38 3 Major Trace 33 2/9/2010 2/11/2010 4.1 3 Major 14.5 17 2/23/2010 2/28/2010 5.46 3 Major 12.1 26 12/24/2010 12/28/2010 4.92 3 Major 12.0 21 1/9/2011 1/13/2011 5.31 3 Major 15.8 61 1/26/2011 1/27/2011 2.17 1 Notable 14.5 22 2/1/2011 2/3/2011 5.3 3 Major 0.8 66 10/29/2011 10/30/2011 1.75 1 Notable Trace 31 2/7/2013 2/10/2013 4.35 3 Major 27.0 48 3/4/2013 3/9/2013 3.05 2 Significant 6.9 49 12/13/2013 12/16/2013 2.95 2 Significant 4.2 45 12/30/2013 1/3/2014 3.31 2 Significant 8.5 84 1/20/2014 1/22/2014 1.26 1 Notable 9.0 35 1/29/2014 2/4/2014 4.08 3 Major 8.8 44 2/4/2014 2/5/2014 3.34 2 Significant 3.1 23 2/11/2014 2/14/2014 5.28 3 Major 13.5 74 11/26/2014 11/28/2014 1.56 1 Notable Trace 76 12/9/2014 12/14/2014 1.49 1 Notable 1.4 53 1/25/2015 1/28/2015 2.62 2 Significant 15.0 18 1/29/2015 2/3/2015 5.42 3 Major 8.3 79 2/8/2015 2/10/2015 1.32 1 Notable 0.3 81 2/20/2015 2/22/2015 1.31 1 Notable 4.4 68 3/3/2015 3/5/2015 1.66 1 Notable 6.3 5 1/22/2016 1/24/2016 7.66 4 Crippling 17.5 55 1/4/2017 1/8/2017 2.52 2 Significant 9.5 64 2/9/2017 2/10/2017 1.87 1 Notable 12.0 24 3/12/2017 3/15/2017 5.03 3 Major 4.5 60 1/3/2018 1/5/2018 2.27 1 Notable 11.0 70 3/1/2018 3/3/2018 1.65 1 Notable 0.1 42 3/5/2018 3/8/2018 3.45 2 Significant 9.1 47 3/11/2018 3/15/2018 3.16 2 Significant 6.0 71 3/20/2018 3/22/2018 1.63 1 Notable 13.6 62 1/11/2019 1/13/2019 2.03 1 Notable Trace 83 3/3/2019 3/4/2019 1.29 1 Notable 4.8 46 12/14/2020 12/18/2020 3.21 2 Significant 6.7 25 1/30/2021 2/3/2021 4.93 3 Major 16.6 88 1/1/2022 1/3/2022 1.06 1 Notable Trace 72 1/4/2022 1/7/2022 1.6 1 Notable 9.1 67 1/28/2022 1/30/2022 1.73 1 Notable 16.4 4 12/13/2022 12/20/2022 8.52 4 Crippling 0.0 52 12/21/2022 12/26/2022 2.66 2 Significant 0.0

Here is the local data that I looked at: Smithtown NESIS Outcomes by season Winter Total Seasonal Snowfall # of NESIS storms Snowfall from NESIS events Net Snowfall excluding NESIS 1995-1996 94.9 1 22.3 72.6 1996-1997 17.3 1 3.0 14.3 1997-1998 4.3 0 0.0 4.3 1998-1999 25.6 0 0.0 25.6 1999-2000 16.3 1 5.3 11.0 2000-2001 50.0 2 15.0 35.0 2001-2002 7.3 0 0.0 7.3 2002-2003 62.5 4 33.5 29.0 2003-2004 56.2 2 18.4 37.8 2004-2005 62.9 2 21.6 41.3 2005-2006 24.2 1 13.3 10.9 2006-2007 11.7 2 6.1 5.6 2007-2008 14.0 0 0.0 14.0 2008-2009 38.2 3 21.9 16.3 2009-2010 60.1 5 43.6 16.5 2010-2011 60.8 4 43.1 17.7 2011-2012 4.5 1 0.0 4.5 2012-2013 46.0 2 33.9 12.1 2013-2014 68.0 6 47.1 20.9 2014-2015 67.0 7 35.7 31.3 2015-2016 38.2 1 17.5 20.7 2016-2017 41.6 3 26.0 15.6 2017-2018 65.1 5 39.8 25.3 2018-2019 21.7 2 4.8 16.9 2019-2020 9.4 0 0.0 9.4 2020-2021 41.9 2 23.3 18.6 2021-2022 36.2 3 25.5 10.7 2022-2023 8.6 2 0.0 8.6 For this period, our average annual snowfall was 37.7", of which 17.9" (47.5%) fell during NESIS ranked storms.

Some examples: