GaWx Posted August 31 Share Posted August 31 7 hours ago, SnoSki14 said: His schtick regarding winter forecasts is not that much different than JB though, just the opposite (always warm, snowless winter). And yeah more often than not he'll be right due to pattern persistence and background warming from CC. But there's no nuance, just copy and paste. Why are you calling it schtick? He’s been actively posting in these ENSO threads only since last winter if I’m not mistaken. Correct me if I’m wrong. So, if true this is only the 2nd winter he’s been actively posting in these general winter threads. Last winter he did well with warmth and that’s the important thing, whether he was influenced by bias or not. Even if he was he backed up his warm forecast very well with history/analog data/reasoning/tweets from well respected pro Mets like Roundy, etc., over and over and over. This winter remains to be seen but I agree with AN unlike last year. He’s incorporating some changed factors from last winter like ENSO/QBO. I thought last winter would be NN to only slightly AN NE and was wrong unlike snowman. This winter I’m closer to him with AN even though the NE could easily not be as AN. Last winter was 40.6 at NYC, or ~4.5 AN (warmest since 2015-6). So, odds are 2024-5 won’t be nearly that warm. The best test for him will be when the NE gets backs to a cold DJF and if he successfully predicts cold for that one. That could very well be 2025-6 for all anyone knows. Did you make a fcast for last winter? What’s your forecast for this winter? 4 Link to comment Share on other sites More sharing options...
George001 Posted August 31 Author Share Posted August 31 9 hours ago, SnoSki14 said: His schtick regarding winter forecasts is not that much different than JB though, just the opposite (always warm, snowless winter). And yeah more often than not he'll be right due to pattern persistence and background warming from CC. But there's no nuance, just copy and paste. On a science based board where the goal should be the pursuit of knowledge and truth, this matters A LOT. Link to comment Share on other sites More sharing options...
rclab Posted August 31 Share Posted August 31 9 hours ago, SnoSki14 said: His schtick regarding winter forecasts is not that much different than JB though, just the opposite (always warm, snowless winter). And yeah more often than not he'll be right due to pattern persistence and background warming from CC. But there's no nuance, just copy and paste. Hello SS14. I believe JB is an able Meteorologist. Unfortunately he allows his desire to overwhelm the logic of reality. S19 is quite the opposite; the reality of our situation, atmospherically will always supersede his desire. That desire occasionally peeks out. I’ve caught it, however it will never, in his case, super cede the ongoing atmospheric/pattern. Stay well, as always …. Link to comment Share on other sites More sharing options...
raindancewx Posted August 31 Share Posted August 31 My forecast calls for -3 to -5 for the Northeast this winter, with the first ever 0" snowfall season for the Boston area. Nothing but 37-42 degree rain, with storm after storm moving in during the 'just warm enough' afternoons but never at night. After each storm, a powerful cold front will drive through pushing temps well below average overnight. These cold fronts will also clear the moisture out of the air. So lows will be cold with highs near average. But timing will prevent measurable snow. You saw it here first. Meanwhile due to slightly better timing, with storms arriving in the morning, Philadelphia and DC will be just cold enough for each system, and see 50-60 inches of snow. The South will be graced with ice and sleet, floods, tornado outbreaks, with the Plains and West alternating between brief record cold snaps and +10 readings for the rest of the winter. 3 Link to comment Share on other sites More sharing options...
Terpeast Posted August 31 Share Posted August 31 2 minutes ago, raindancewx said: My forecast calls for -3 to -5 for the Northeast this winter, with the first ever 0" snowfall season for the Boston area. Nothing but 37-42 degree rain, with storm after storm moving in during the 'just warm enough' afternoons but never at night. After each storm, a powerful cold front will drive through pushing temps well below average overnight. These cold fronts will also clear the moisture out of the air. So lows will be cold with highs near average. But timing will prevent measurable snow. You saw it here first. Meanwhile due to slightly better timing, with storms arriving in the morning, Philadelphia and DC will be just cold enough for each system, and see 50-60 inches of snow. The South will be graced with ice and sleet, floods, tornado outbreaks, with the Plains and West alternating between brief record cold snaps and +10 readings for the rest of the winter. Thanks for the laugh! Do you have some sort of beef with Boston, though? I’m genuinely curious. Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted September 1 Share Posted September 1 Only 4 amarillos have queefed in Albuquerque this August. Usually the good snow years in Boston have at least 6 queefs on the northeast side of the plateau here between August 15-19 alone. My data has between 3 and 5 queefs as a pretty solid southwest cold signal for January and February with above average precip for wherever I live. Link to comment Share on other sites More sharing options...
raindancewx Posted September 1 Share Posted September 1 The Canadian has a -WPO look for Oct-Feb looks like. La Nina is dead in February. The look isn't really a technical La Nina. It's cold from 100-150W, but barely below average for 120-180W. It's close enough, but may not ever get designated officially as a La Nina. To me the Canadian is on the right track - it has the North Central US cold with cold air in Western Canada feeding the US cold. Doesn't look crazy if Canada isn't flooded with warm air from the +WPO. If cold dumps into the US from Western Canada to the North-Central Plains I'd expect the warmest areas of the US to be areas of the SE/SW most separated by mountain ranges from the cold waves in the Plains. So Southeast US east of the Appalachians and Southwest US west of the Continental Divide. We'd be in this weird transition zone here where one or two of the Blue Northers would be tall enough to move directly north to south, and then the Arctic air in the Plains would probably ooze over the shorter mountain passes here a few times. As we have literally no hurricane activity in the Atlantic, I've just about given up on going super hot here. Atlantic is rapidly correcting toward 'average' not hyperactivity at the moment. The lower activity hurricane seasons tend to see arctic air dumps into the West. I will say, the pattern v. 2020 is semi-opposite. Fall 2020 had basically all-time record -WPO cold dumps into the Rockies/Plains/Mexico in Sept/Oct that then flipped back to very +WPO conditions for a while. We're looking at +/neutral WPO conditions in September and then only 'normal' -WPO conditions in October. 1 Link to comment Share on other sites More sharing options...
michsnowfreak Posted September 1 Share Posted September 1 5 hours ago, George001 said: On a science based board where the goal should be the pursuit of knowledge and truth, this matters A LOT. Normals change every 10 years though, so if your climate has consistently warmed, it'll show in the next set of normals. Winters won't always be warmer and less snowy than normal, because then normal wouldn't be normal. Yes, the past 10 years have seen mild winters dominate. But the prior 10 years saw quite a bit of cold. Weather also tends to go in cycles regardless of whst is "normal". Link to comment Share on other sites More sharing options...
mitchnick Posted September 1 Share Posted September 1 8 hours ago, raindancewx said: The Canadian has a -WPO look for Oct-Feb looks like. La Nina is dead in February. The look isn't really a technical La Nina. It's cold from 100-150W, but barely below average for 120-180W. It's close enough, but may not ever get designated officially as a La Nina. To me the Canadian is on the right track - it has the North Central US cold with cold air in Western Canada feeding the US cold. Doesn't look crazy if Canada isn't flooded with warm air from the +WPO. If cold dumps into the US from Western Canada to the North-Central Plains I'd expect the warmest areas of the US to be areas of the SE/SW most separated by mountain ranges from the cold waves in the Plains. So Southeast US east of the Appalachians and Southwest US west of the Continental Divide. We'd be in this weird transition zone here where one or two of the Blue Northers would be tall enough to move directly north to south, and then the Arctic air in the Plains would probably ooze over the shorter mountain passes here a few times. As we have literally no hurricane activity in the Atlantic, I've just about given up on going super hot here. Atlantic is rapidly correcting toward 'average' not hyperactivity at the moment. The lower activity hurricane seasons tend to see arctic air dumps into the West. I will say, the pattern v. 2020 is semi-opposite. Fall 2020 had basically all-time record -WPO cold dumps into the Rockies/Plains/Mexico in Sept/Oct that then flipped back to very +WPO conditions for a while. We're looking at +/neutral WPO conditions in September and then only 'normal' -WPO conditions in October. Comparing this run to August's, it's a little cooler here in south central PA in Dec & Jan and a little warmer in Feb. In typical Nina fashion, unfortunately, it's a dry'ish run for much of the east. Verbatim, January looks like our best shot for wintry weather, which is typical here in Niñas. Really looks like a congrats NNE and Midwest sorta year. 1 Link to comment Share on other sites More sharing options...
snowman19 Posted September 1 Share Posted September 1 32 minutes ago, mitchnick said: Comparing this run to August's, it's a little cooler here in south central PA in Dec & Jan and a little warmer in Feb. In typical Nina fashion, unfortunately, it's a dry'ish run for much of the east. Verbatim, January looks like our best shot for wintry weather, which is typical here in Niñas. Really looks like a congrats NNE and Midwest sorta year. Just saw the new Nov-Mar 500mb maps and it looks unimpressive, completely void of high latitude NAO/AO blocking and it goes canonical Niña torch Feb/Mar. Aleutian ridge city, negative PNAish and it pumps the SE ridge starting in Jan 1 Link to comment Share on other sites More sharing options...
snowman19 Posted September 1 Share Posted September 1 9 hours ago, raindancewx said: The Canadian has a -WPO look for Oct-Feb looks like. La Nina is dead in February. The look isn't really a technical La Nina. It's cold from 100-150W, but barely below average for 120-180W. It's close enough, but may not ever get designated officially as a La Nina. To me the Canadian is on the right track - it has the North Central US cold with cold air in Western Canada feeding the US cold. Doesn't look crazy if Canada isn't flooded with warm air from the +WPO. If cold dumps into the US from Western Canada to the North-Central Plains I'd expect the warmest areas of the US to be areas of the SE/SW most separated by mountain ranges from the cold waves in the Plains. So Southeast US east of the Appalachians and Southwest US west of the Continental Divide. We'd be in this weird transition zone here where one or two of the Blue Northers would be tall enough to move directly north to south, and then the Arctic air in the Plains would probably ooze over the shorter mountain passes here a few times. As we have literally no hurricane activity in the Atlantic, I've just about given up on going super hot here. Atlantic is rapidly correcting toward 'average' not hyperactivity at the moment. The lower activity hurricane seasons tend to see arctic air dumps into the West. I will say, the pattern v. 2020 is semi-opposite. Fall 2020 had basically all-time record -WPO cold dumps into the Rockies/Plains/Mexico in Sept/Oct that then flipped back to very +WPO conditions for a while. We're looking at +/neutral WPO conditions in September and then only 'normal' -WPO conditions in October. All the new model runs look terrible for Atlantic TC development now. We are starting to run out of time for a hyperactive season with very high ACE and a big number of named storms Link to comment Share on other sites More sharing options...
SnoSki14 Posted September 1 Share Posted September 1 Very unusual to see such low tropical activity given all the preceding factors...not Nina like at all Good call by raindance doubting all the hyperactive forecasts Link to comment Share on other sites More sharing options...
mitchnick Posted September 1 Share Posted September 1 1 hour ago, snowman19 said: Just saw the new Nov-Mar 500mb maps and it looks unimpressive, completely void of high latitude NAO/AO blocking and it goes canonical Niña torch Feb/Mar. Aleutian ridge city, negative PNAish and it pumps the SE ridge starting in Jan For the inland Mid-Atlantic and most SNE areas, snow to sleet/zr seem like our best chances this year, with a flat out change to all rain in coastal/lowland areas. Short of a fluke, or should I say miracle, it's not a pattern conducive to 6"+ all snow events imby by any stretch. 1 Link to comment Share on other sites More sharing options...
mitchnick Posted September 1 Share Posted September 1 14 minutes ago, SnoSki14 said: Very unusual to see such low tropical activity given all the preceding factors...not Nina like at all Good call by raindance doubting all the hyperactive forecasts Oz Gfs went a little tropical happy, but 6z naso much. Link to comment Share on other sites More sharing options...
bluewave Posted September 1 Share Posted September 1 On 8/31/2024 at 8:42 AM, PhiEaglesfan712 said: I think we've been in a record -PDO cyclical pattern since the beginning of 2020: 2020 -1.41 -1.48 -1.75 -1.32 -0.53 -0.75 -0.92 -1.33 -1.04 -0.62 -1.59 -0.99 2021 -0.61 -1.09 -1.68 -1.84 -2.01 -1.81 -1.96 -0.94 -1.96 -3.13 -2.75 -2.71 2022 -2.40 -1.91 -1.67 -2.10 -2.25 -1.33 -2.62 -2.39 -2.29 -1.82 -2.41 -2.21 2023 -1.25 -1.65 -2.45 -3.07 -2.42 -2.53 -2.52 -2.47 -2.98 -2.23 -1.79 -1.66 This looks like it will be one of the strongest -PDO summers since 1950. The -PDO pattern was so strong that year that it produced a +13.0 January in Atlanta. While this is not meant to be a forecast for next winter, it just shows what is within the range of possibilities should we get a strong enough Aleutian ridge and deep enough trough out West. We already had a +13.2 with the 21-22 La Niña and -PDO at DFW in December 21. Extreme months like this usually pop up in forecasts very close to the time period. So it’s not usually something that we can forecast from so far out. Hopefully, we get some type of mismatch pattern next winter that takes an extreme winter month off of the table. But it’s something to just be aware of with such extreme -PDOs. https://www.ncei.noaa.gov/pub/orders/IPS/IPS-017CC821-F4F4-4CF6-868A-42E597844BF5.pdf 3 Link to comment Share on other sites More sharing options...
snowman19 Posted September 1 Share Posted September 1 42 minutes ago, bluewave said: This looks like it will be one of the strongest -PDO summers since 1950. The -PDO pattern was so strong that year that it produced a +13.0 January in Atlanta. While this is not meant to be a forecast for next winter, it just shows what is within the range of possibilities should we get a strong enough Aleutian ridge and deep enough trough out West. We already had a +13.2 with a 2020s La Niña at DFW in December 2021. Extreme months like this usually pop up in forecasts very close to the time period. So it’s not usually something that we can forecast from so far out. Hopefully, we get some type of mismatch pattern next winter that takes an extreme winter month off of the table. But it’s something to just be aware of with such extreme -PDOs. https://www.ncei.noaa.gov/pub/orders/IPS/IPS-017CC821-F4F4-4CF6-868A-42E597844BF5.pdf Now that we are into September, the following look like very good bets going into November, baring some dramatic, unexpected change over the next 2 months: strong -PDO, -PMM, weak -IOD, -ENSO (central based), +QBO (possibly strong?), +AMO/New Foundland warm pool, MJO favoring phases 4-6, high solar flux/high geomag, low arctic sea ice, any minor, unkown impacts on the stratosphere from the Ruang volcanic eruptions back in April@Gawx 1 1 Link to comment Share on other sites More sharing options...
PhiEaglesfan712 Posted September 1 Share Posted September 1 This would mark the first time in 27 years that not a single named storm, those with winds of at least 39 mph, has developed in the Atlantic between Aug. 21 and Sept. 2. 1 1 Link to comment Share on other sites More sharing options...
snowman19 Posted September 1 Share Posted September 1 3 hours ago, mitchnick said: Oz Gfs went a little tropical happy, but 6z naso much. I also wonder how much of a factor the warm tropical tropopause in the Atlantic (AGW related) is playing in this… 1 Link to comment Share on other sites More sharing options...
GaWx Posted September 1 Share Posted September 1 1 minute ago, snowman19 said: I also wonder how much of a factor the warm tropical tropopause in the Atlantic (AGW related) is playing in this… I’m suspecting that one of the factors leading to the current quiet is the record warm E Atlantic from 30 to 45N. Any opinions about this? 1 Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted September 1 Share Posted September 1 6 hours ago, mitchnick said: Comparing this run to August's, it's a little cooler here in south central PA in Dec & Jan and a little warmer in Feb. In typical Nina fashion, unfortunately, it's a dry'ish run for much of the east. Verbatim, January looks like our best shot for wintry weather, which is typical here in Niñas. Really looks like a congrats NNE and Midwest sorta year. I'll take my chances on precip with a +NAO and inferno over the ATL....hedge warmer and wetter given CC. 1 Link to comment Share on other sites More sharing options...
mitchnick Posted September 1 Share Posted September 1 2 minutes ago, 40/70 Benchmark said: I'll take my chances on precip with a +NAO and inferno over the ATL....hedge warmer and wetter given CC. I'd take that bet too if I were you. 1 Link to comment Share on other sites More sharing options...
PhiEaglesfan712 Posted September 1 Share Posted September 1 3 hours ago, snowman19 said: I also wonder how much of a factor the warm tropical tropopause in the Atlantic (AGW related) is playing in this… 1 Link to comment Share on other sites More sharing options...
GaWx Posted September 1 Share Posted September 1 6 hours ago, snowman19 said: Now that we are into September, the following look like very good bets going into November, baring some dramatic, unexpected change over the next 2 months: strong -PDO, -PMM, weak -IOD, -ENSO (central based), +QBO (possibly strong?), +AMO/New Foundland warm pool, MJO favoring phases 4-6, high solar flux/high geomag, low arctic sea ice, any minor, unkown impacts on the stratosphere from the Ruang volcanic eruptions back in April@Gawx Do you think that the current very active sun could be one of the main factors (especially when considering lag) keeping the recent Atlantic tropics quiet? Aug of 2024 had a 216, the highest mean sunspots in Aug since 1991. That means that this Aug had the highest mean for Aug of the current active Atlantic tropics era so far.https://www.sidc.be/SILSO/DATA/SN_m_tot_V2.0.txt Per met. Joe D’Aleo: “We have mentioned the strong solar spike which research has shown can suppress hurricane activity.” “One negative may be the big spike in solar in cycle 25. Most cycles have had a dual max and recent ones had the second one higher. This warms the upper atmosphere and hampers development.” 1 Link to comment Share on other sites More sharing options...
40/70 Benchmark Posted September 1 Share Posted September 1 6 minutes ago, GaWx said: Do you think that the current very active sun could be one of the main factors (especially when considering lag) keeping the recent Atlantic tropics quiet? Aug of 2024 had a 216, the highest mean sunspots in Aug since 1991. That means that this Aug had the highest mean for Aug of the current active Atlantic tropics era so far.https://www.sidc.be/SILSO/DATA/SN_m_tot_V2.0.txt Per met. Joe D’Aleo: “We have mentioned the strong solar spike which research has shown can suppress hurricane activity.” “One negative may be the big spike in solar in cycle 25. Most cycles have had a dual max and recent ones had the second one higher. This warms the upper atmosphere and hampers development.” If you look at most of the hyper ACE seasons, they were near solar min...just like neg NAO . 1 1 Link to comment Share on other sites More sharing options...
bluewave Posted September 1 Share Posted September 1 6 hours ago, PhiEaglesfan712 said: This would mark the first time in 27 years that not a single named storm, those with winds of at least 39 mph, has developed in the Atlantic between Aug. 21 and Sept. 2. It’s the first time in known history that a El Niño summer ahead of a winter ONI of +2.0 or greater had 7 named storms and 2 category 4 hurricanes develop between August 20th and 31st to be followed by a developing La Niña the next summer with no new storms during this period. 2023 New developments between 8-20 and 8-31 TS Gert TS Emily Cat 4 Franklin TS Harold Cat 4 Idalia TS Jose TS Katina 2024 No new developments Link to comment Share on other sites More sharing options...
GaWx Posted September 1 Share Posted September 1 4 hours ago, 40/70 Benchmark said: If you look at most of the hyper ACE seasons, they were near solar min...just like neg NAO . Thanks, Ray. Great point. I’m going to look more closely now to see if I can confirm your suspicions about hyper seasons tending to be near solar min. Here are the 13 ATL seasons with 180+ ACE along with ASO averaged monthly sunspots: 1878: 5 (min) 1887: 20 (quiet) 1893: 160 (max) 1926: 110 (1.5 yrs before max) 1933: 5 (min) 1950: 95 (halfway from max to min) 1961: 75 (halfway from max to min) 1995: 20 (nearing min) 1998: 110 (2 years after min) 2004: 65 (3 years after max) 2005: 35 (quiet/3 years before min) 2017: 30 (quiet/2 years before min) 2020: 10 (just after min) So, of the 13 180+ ACE seasons, 7 had low sunspots, 3 had near avg, and 3 had above avg. though only one of those 3 had well above avg (1893) like 2024. And 2024 has an excellent shot at exceeding the 160 of 1893 since Aug was 215. It could end up near 200 for all we know now. I’d say 175+ is pretty safe. The avg monthly of these 13 seasons’ ASO sunspots was only ~55, which is well under the 1900-2022 avg of ~85 for all months. When looking at ASO averaged monthly sunspots of 135+, the only other high ACE were the 166 of 1969 (ASO sunspots avg 135), the 149 of 1980 (ASO sunspots avg of 215), and the 177 of 1999 (ASO sunspot avg of 140). So, the highest ACE during a 200+ ASO (edit: actually 175+) sunspot avg was only 149 (1980). https://en.m.wikipedia.org/wiki/Accumulated_cyclone_energy https://www.sidc.be/SILSO/DATA/SN_m_tot_V2.0.txt Link to comment Share on other sites More sharing options...
PhiEaglesfan712 Posted September 1 Share Posted September 1 1 hour ago, bluewave said: It’s the first time in known history that a El Niño summer ahead of a winter ONI of +2.0 or greater had 7 named storms and 2 category 4 hurricanes develop between August 20th and 31st to be followed by a developing La Niña the next summer with no new storms during this period. 2023 New developments between 8-20 and 8-31 TS Gert TS Emily Cat 4 Franklin TS Harold Cat 4 Idalia TS Jose TS Katina 2024 No new developments I'm still salty about Idalia not getting retired. Lesser storms in the past have gotten retired. I guess the WMO changed the criteria and made it harder for storms to be retired. If Idalia didn't get retired, I highly doubt Debbie or Ernesto will. I think only really big storms, like Beryl, will be retired going forward. Link to comment Share on other sites More sharing options...
GaWx Posted September 1 Share Posted September 1 Since 1851 here are the 19 years with 175+ sunspot avg during ASO (11% of the years), where 2024 is very likely headed, along with their respective ACE (* means El Niño (including incoming) season): 1859: 56 1860: 62 1870: 88 1917: 61 1937: 66 1947: 88 1948: 95 1949: 96 1956: 57 *1957: 79 *1958: 110 1959: 77 *1979: 93 1980: 149 1981: 100 1989: 135 1990: 97 *1991: 36 2001: 110 AVG ACE for ASO sunspots >175: 82 (near longterm avg)(same if throw out El Niño seasons) Highest ACE for ASO sunspots >175: 149 Link to comment Share on other sites More sharing options...
GaWx Posted September 1 Share Posted September 1 Since 1851 here are the 18 years with 10 or lower sunspot avg during ASO (10% of the years): (* means El Niño (including incoming) season) *1855: 18 1856: 49 1878: 181 *1888: 85 1901: 99 *1911: 34 1912: 57 *1913: 36 1933: 259 1954: 111 1964: 153 1996: 166 2007: 74 2008: 146 *2009: 53 *2018: 133 2019: 132 2020: 180 AVG ACE for 18 years of 10- ASO sunspots: 104 (significantly > longterm avg) AVG ACE for 12 non-Nino years of 10- ASO sunspots: 124 (much > longterm avg) So, analysis of this post and post just above this for non-El Niño seasons only: - avg ACE was 124 for the twelve 10- ASO sunspot seasons - avg ACE was 82 for the nineteen 175+ ASO sunspot seasons - Whereas none of the 15 non-El Nino seasons with 175+ ASO sunspots had 150+ ACE, five of the 13 non-El Nino (38%) 10- sunspot seasons had 150+ ACE. Conclusions from the analysis in my 3 sunspot/ACE -correlation related posts: -I think @40/70 Benchmark’s idea about the tendency for high ACE seasons to be near solar min has a lot of merit and is backed up pretty well with the above data. That may also mean it is going to be difficult for 2024 or a typical future year with ASO sunspots >175 to get to 175+ ACE (or maybe even just 150+ ACE) despite other very favorable factors like La Niña and near record warm Atlantic MDR SSTs. -I think the research that Joe D’Aleo mentioned about the tendency for a strong solar spike to hamper hurricane activity via a lowering of instability due to warming of the upper atmosphere should be investigated further as quite possibly being one of the main reasons for the recent quiet. I read elsewhere about it being quite warm. @snowman19 Sources of data: Sunspots: https://www.sidc.be/SILSO/DATA/SN_m_tot_V2.0.txt ACE: https://en.m.wikipedia.org/wiki/Accumulated_cyclone_energy ENSO pre 1950: https://www.webberweather.com/ensemble-oceanic-nino-index.html ENSO 1950+: https://origin.cpc.ncep.noaa.gov/products/analysis_monitoring/ensostuff/ONI_v5.php 2 Link to comment Share on other sites More sharing options...
snowman19 Posted September 1 Share Posted September 1 10 hours ago, GaWx said: Since 1851 here are the 18 years with 10 or lower sunspot avg during ASO (10% of the years): (* means El Niño season) *1855: 18 1856: 49 1878: 181 *1888: 85 1901: 99 *1911: 34 1912: 57 *1913: 36 1933: 259 1954: 111 1964: 153 1996: 166 2007: 74 2008: 146 *2009: 53 *2018: 133 2019: 132 2020: 180 AVG ACE for 18 years of 10- ASO sunspots: 104 (significantly > longterm avg) AVG ACE for 12 non-Nino years of 10- ASO sunspots: 124 (much > longterm avg) So, analysis of this post and post just above this for non-El Niño seasons only: - avg ACE was 124 for the twelve 10- ASO sunspot seasons - avg ACE was 82 for the nineteen 175+ ASO sunspot seasons - Whereas none of the 15 non-El Nino seasons with 175+ ACE had 150+ ACE, five of the 13 (38%) 10- seasons had 150+ ACE. Conclusions from the analysis in my 3 sunspot/ACE -correlation related posts: -I think @40/70 Benchmark’s idea about the tendency for high ACE seasons to be near solar min has a lot of merit and is backed up pretty well with the above data. That may also mean it is going to be difficult for 2024 or a typical future year with ASO sunspots >175 to get to 175+ ACE (or maybe even just 150+ ACE) despite other very favorable factors like La Niña and near record warm Atlantic MDR SSTs. -I think the research that Joe D’Aleo mentioned about the tendency for a strong solar spike to hamper hurricane activity via a lowering of instability due to warming of the upper atmosphere should be investigated further as quite possibly being one of the main reasons for the recent quiet. I read elsewhere about it being quite warm. @snowman19 This (solar cycle) is exactly what happened back in 01-02. The incoming UV from the high solar flux warms the low and mid latitude’s upper troposphere’s @donsutherland1 1 1 Link to comment Share on other sites More sharing options...
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