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Global models has been showing a very active monsoon trough in the NWPAC w/ as many as 5 TCs at once. 5 named storms in this basin has happened many times. 6 only once on 8/15/2018. You get large monsoonal depressions and small spin-up gyres that are not always declared by JTWC. GFS for Monday shows 5 distinct systems of various intensity and size.

Spiral galaxy mode engaged.

You really need to start tagging other peoples work and not trying to show it off as your own even if it is from twitter.

"The bi-monthly Multivariate El Niño/Southern Oscillation (ENSO) index (MEI.v2) is the time series of the leading combined Empirical Orthogonal Function (EOF) of five different variables (sea level pressure (SLP), sea surface temperature (SST), zonal and meridional components of the surface wind, and outgoing longwave radiation (OLR)) over the tropical Pacific basin (30°S-30°N and 100°E-70°W). The EOFs are calculated for 12 overlapping bi-monthly "seasons" (Dec-Jan, Jan-Feb, Feb-Mar,..., Nov-Dec) in order to take into account ENSO's seasonality, and reduce effects of higher frequency intraseasonal variability. During the typical height of ENSO during late Fall/early Winter, the canonical features of atmosphere and ocean anomalies are shown schematically below based on a composite of 11 historical El Niño and La Niña events. Key features of composite positive MEI events (warm, El Niño) include (1) anomalously warm SSTs across the east-central equatorial Pacific, (2) anomalously high SLP over Indonesia and the western tropical Pacific and low SLP over the eastern tropical Pacific, (3) reduction or reversal of tropical Pacific easterly winds (trade winds), (4) suppressed tropical convection (positive OLR) over Indonesia and Western Pacific and enhanced convection (negative OLR) over the central Pacific (Fig. 1a). Key features of composite negative MEI events (cold, La Niña, Fig. 1b) are of mostly opposite phase. For any single El Niño or La Niña situation, the atmospheric articulations may depart from this canonical view." https://psl.noaa.gov/enso/mei/ What would this second combined EOF do exactly to help with this metric? A 'V' component to wind is important just not as functional in the sloshing of waters as the 'U' wind tends to be. Wind and SLP go hand in hand so they should carry the same weight. OLR is covered over a very large area of the equatorial Pacific it literally is measuring the intensity/location of forcing within the atmosphere. WWBs being further east and west is also important into the evolution of an ENSO (El Nino) event. I completely disagree that OHC should be added, SSTs do just fine. We already have RONI which is just stating the obvious of what is happening in a warming world with warming oceans. The only criticism I would have of MEI is it plays catch up in all events but it often signals when the state has changed properly. We have been also noticing more lately that each block tropics/subtropics, mid latitudes, and polar regions have not been cohesive with each other. So while the tropics may be humming along in an El Nino the mid latitudes can react very differently and can be destructive to the evolution of ENSO in either state. Just as much as the northern hemisphere and southern hemisphere will experience ENSO events differently. This El Nino has been awfully more impactful within the southern hemisphere than so far in the northern hemisphere. This could change but have yet to see those signs show up in the 500mb pattern. Unfortunately this has not updated for July so I can't do a longer comparison but over the time period of greatest warming and exertion of a changing ENSO state these are the 500mb maps and wind anomalies we have seen between these two events. We seem to be running out of resources for plotting data so we are left with what we can find. Just because we are having something producing similar numbers in SST anomalies does not mean things will follow the exact same way as a previous event did. Overall this just tells me in the near 30 years that ocean temps have become dramatically warmer globally, to a rather drastic extent. The implications of such we do not fully understand yet or how it will affect these events as we go through time.

Was delayed, now goes into effect 8/11/26. https://dd.meteo.gc.ca/doc/genots/2026/08/03/NOCN04_CWAO_031225___62572

One of the best weather days of the season. Going to have to wait awhile for another one as we will be back in the Sauna starting later Wednesday - with heat advisories likely and severe and flooding watches warnings to go along with it.

I get what you’re saying with adding an OHC component to the formula, but I think looking at it separately is just as effective

And the MEI cope has officially failed miserably, down in flames!! Womp, womp!! The last 5 months have been absolutely hilarious. Let’s see…First there was the RONI cope, FAIL, then there was the SOI cope, FAIL, then there was the trade winds are going to come back cope, FAIL, then there was the ridiculous Modoki cope, FAIL, then there MEI cope, FAIL, now we have the -PDO cope, also destined to miserably fail this fall. Can’t wait to see what the next copium will be to downplay the strongest east-based super El Niño in history…. Have to post this again….makes me smile

tbf i have only been on here for a week but i will say the index has its flaws for starters theres only one eof so if an el nino has wwbs centered slightly east or west of typical or if the olr response is aytypical ( but still nino like) that can hurt the index i think adding a second mei w a second eof could be usueful but the third issue is the variables people act like its represntitve of the coupled system but the atmosphere counts for 4/5 of the index so its really an atmospheric index, secondly all indices counting the same is also a problem, im sorry "v wind" should not count the same as slp which has a very tight correlation to enso. Imo we shoud also add upper ocean heat conent and u componet of sfc current and remove v wind but i digress. Despite its flaws its still good at capturing the atmospheric response to enso it just needs to be looked at alongside the maps for slp winds olr vp to confirm super nino coupling. So when ppl discredit it there could be a reason im not saying they are correct tho.

I would be pissed if this dude kept tagging me in everything.

The coupling is extreme. Biggest April - July MEI rise in history, like you said, up to +2.4 now. The highest MEI value we’ve had since 1998 and only 0.5 from the all time record of +2.9:

Chesco, you are quite welcome. Seems like an important step towards understanding the data adjustments done by NCEI and BEST, and the topic of this forum.. The next step is to look at how break points are identified using reference stations. Chubbs has a graph above showing the 1946 break resulting from 1 SW's move to Newlinville, and here is similar graph also using raw data. What I have done is synchronize the temperature series at 1945, and removed the absolute temperature values on the Y-axis--because the absolute values don't matter if we are looking for climate trends. This shows just the 1946 break, and shows the RESULT/IMPACT the station move made on Tavg. Now, imagine repeating this process with a large set of reference stations across the whole history of 1 SW to create a time line of breaks and the deg F size of the shift at each break. That is what is done. With the new information from the breaks, we can adjust the station data by reversing the IMPACT of the moves. With the repaired data set, we can then identify baselines and departures from those baselines--anomalies. Absolute values don't matter, the change over time does. Also, by convention the adjustments are made with the end of the raw data series aligned to the same temperature as the end of the adjusted data series. This may lead to confusion when the raw and the adjusted data are viewed in the same graph, because it looks like one series has been "chilled" or "warmed" with respect to the other. The reality is that the raw data for Coatesville is actually several distinct stations, and the adjusted data has been upgraded to be a lot closer to what the raw data would have looked like if the station never moved. Trying to assign absolute temperatures to either time series is not useful when the information we want is change over time. With that in mind, would you clarify what you mean by "there were no unusual temperature changes at Coatesville 1SW that were not statistically aligned with the nearby stations within 30 miles of that point" & "This supports the fact that there was no need for any adjustments to the raw data at all!"?

Sorry for the delay here is August. I think I want to try adding persistence into the new year. I will base it off of a 6 month running mean of the actual anomalies. If anyone has criticisms on this please feel free to let me know how best to approach something like this.

Good weather watching opportunities doing a route like that.

Short Term / High Res Guidance is fairly confident in redevelopment more locally after midnight, that's what the FFWatch is for.

Came across this site. Excellent current stats and ranking for global TCs! https://global-tropical-cyclones.com/ And I got a better list of the top TCs globally by ACE. For some reason they counted Paka from 1997 twice. I think b/c the storm formed in the cntrl Pacific and crossed into the wrn Pacific. So really #20 on the list should be Lola from the NWPAC in 1957. This site from CSU is also excellent for S-T-D activity and archives. https://tropical.atmos.colostate.edu/Realtime/

Now I understand, we use MEI now that it has finally caught up but before it was discredited as a metric because it was not showing what people wanted. This thread gets more funny by the day. I feel I should just create a twitter account based off this.

It has become a very large typhoon, which is to be expected w/ a system around this long gradually moving out of the tropics, but the inner core reforming like that w/ a smaller eye that a few days ago is surprising. The other day the eye was about 35 nm in diameter, but now about 20 nm. We still have another 5 days before landfall, so it may form a giant eye yet. Fcst to pass right over Okinawa. Three METAR sites to look at for Okinawa for the passage -- RODN, ROTM, and ROAH. It's too bad the WSR-88D at RODN was decommissioned a few years ago!

The one you seem to be discrediting has actually been more negative than the one you posted. 2020 -1.41 -1.48 -1.75 -1.32 -0.52 -0.75 -0.92 -1.33 -1.04 -0.62 -1.58 -0.98 2021 -0.61 -1.09 -1.67 -1.84 -2.04 -1.82 -2.00 -0.95 -1.96 -3.14 -2.75 -2.71 2022 -2.40 -1.91 -1.67 -2.09 -2.23 -1.31 -2.63 -2.38 -2.28 -1.81 -2.40 -2.21 2023 -1.24 -1.65 -2.45 -3.08 -2.41 -2.55 -2.54 -2.48 -2.99 -2.23 -1.79 -1.66 2024 -1.57 -1.34 -1.54 -2.11 -2.98 -3.15 -3.01 -2.91 -3.56 -3.80 -3.13 -2.03 2025 -1.29 -1.40 -1.12 -1.15 -1.66 -2.64 -4.21 -3.23 -2.31 -2.37 -1.51 -0.96 2026 -1.24 -1.00 -1.42 -1.62 -1.67 -1.71 -2.03 99.99 99.99 99.99 99.99 99.99 https://www.ncei.noaa.gov/pub/data/cmb/ersst/v5/index/ersst.v5.pdo.dat Versus 2020 -0.79 -1.12 -1.68 -1.32 -0.68 -0.86 -0.77 -0.85 -0.75 -0.29 -1.23 -0.92 2021 -0.73 -1.29 -1.70 -1.77 -2.33 -1.89 -1.93 -0.84 -1.70 -2.69 -2.37 -2.47 2022 -2.22 -1.72 -1.63 -2.19 -2.44 -1.42 -2.44 -1.78 -1.78 -1.48 -1.83 -1.85 2023 -1.24 -1.79 -2.50 -3.13 -2.46 -2.67 -2.44 -2.02 -2.52 -1.88 -1.16 -1.20 2024 -1.48 -1.33 -1.27 -1.99 -3.01 -2.93 -2.62 -2.37 -3.10 -3.24 -2.58 -1.57 2025 -0.97 -1.20 -0.81 -1.07 -1.84 -2.62 -3.83 -2.54 -1.71 -1.82 -1.02 -0.39 2026 -0.87 -0.79 -1.18 -1.28 -1.64 -1.32 -1.29 99.99 99.99 99.99 99.99 99.99 https://www.ncei.noaa.gov/pub/data/cmb/ersst/v5/v6/index/ersst.v6.pdo.dat This one is the one that site uses.