The satellite evolution put together on the left frame is particularly impressive… often it’s rare to observe #CCKW propagation without filtering, but no such tool needed for this strong event.

Thanks Philippe for pointing out. This one is a really strong Kelvin wave, that caught up the MJO envelope.
A textbook case ! #CCKW
Another one expected by the end of the week.

Plot of the western hemisphere showing the filtered Kelvin Wave band (blue solid lines indicate upward vertical motion). Note the wave propagating eastward across from 22 Jul to 29 Jul (following the blue arrow).

GOES-18 Full Disk View Infrared Satellite Image valid 2205 UTC 26 July. Annotated is the bubble is convection being enhanced by the CCKW.

Graphical Tropical Weather Outlook for 11am PDT highlighting three areas for development.

Not hard to see what is causing the abrupt uptick in convective activity in the Central & East Pacific. A potent Convectively Coupled Kelvin Wave, #CCKW, has been marching eastward, activating the #ITCZ.

This convection may aid #ITCZ breakdown, with 3️⃣ areas being monitored for #TC formation.

#Invest #97L nearing fav. 850hPa +VP (conv) of tilted #CCKW. Lagged 200hPa area of kelvin wave promotes -VP & assists div outflow #tropics

Guidance via @carl_schreck shows a strong #CCKW will interact w/ low-lat #AEW. #TCG likelihood enhanced after they superimpose. #wx #tropics

A #CCKW marching across the #ATL basin may provide favorable env. for emerging #AEW to develop into a #TC. #tropics

As fcasted last week, strong #CCKW was critical in providing favorable env. for #TCG of #Agatha & #Blas. #tropics