@sausiuswx.bsky.social
Average weather enthusiast -
Main areas of interest: Tropical Cyclones and (European) severewx
Main areas of interest: Tropical Cyclones and (European) severewx
Tiny Tropical Cyclone Bakung has undergone an impressive period of rapid intensification over the least several hours. Inside the tiny circulation now almost surely swirl winds far in excess of the category 1 threshold, likely C2+ already.
December 13, 2025 at 3:12 PM
Tiny Tropical Cyclone Bakung has undergone an impressive period of rapid intensification over the least several hours. Inside the tiny circulation now almost surely swirl winds far in excess of the category 1 threshold, likely C2+ already.
Going by UTC, it is still technically the anniversary of a day that will forever remain seared in my (and so many other peoples mind) memory. That of the 2021 'Mayfield Tornado'💔
In honor of that: Here is an image of that tornado outbreak made by the MODIS instrument.
In honor of that: Here is an image of that tornado outbreak made by the MODIS instrument.
December 11, 2025 at 11:26 PM
Going by UTC, it is still technically the anniversary of a day that will forever remain seared in my (and so many other peoples mind) memory. That of the 2021 'Mayfield Tornado'💔
In honor of that: Here is an image of that tornado outbreak made by the MODIS instrument.
In honor of that: Here is an image of that tornado outbreak made by the MODIS instrument.
On the afternoon of December 11th 1998 (local time), Cyclone Thelma, one of the most powerful Cyclones to be ever observed in these parts (135 kts at peak), made landfall along a deserted part of Australias Pilbara coast. Tragically, there was still one indirect death. #OTDwx
December 11, 2025 at 11:19 PM
On the afternoon of December 11th 1998 (local time), Cyclone Thelma, one of the most powerful Cyclones to be ever observed in these parts (135 kts at peak), made landfall along a deserted part of Australias Pilbara coast. Tragically, there was still one indirect death. #OTDwx
Tropics have been quite for quite a while but alas now here is Tropical Cyclone Seven in the southeast Indian Ocean. The system is expected to stay over open waters only and likely to stay weak, tho may become a C1 SSHWS. Also not sure if I have said "Welcome back Him-9" already.
December 11, 2025 at 11:18 PM
Tropics have been quite for quite a while but alas now here is Tropical Cyclone Seven in the southeast Indian Ocean. The system is expected to stay over open waters only and likely to stay weak, tho may become a C1 SSHWS. Also not sure if I have said "Welcome back Him-9" already.
Turns out I didn't EUMETSATs stupid coordinate file. So me and Gemini have now got Meteosat First generation to work. So here is Medicane Celano from January 16th 1995 as seen by the MIVIRI instrument of Meteosat 5 in visible and thermal infrared. True color isn't possible.
December 10, 2025 at 7:42 PM
Turns out I didn't EUMETSATs stupid coordinate file. So me and Gemini have now got Meteosat First generation to work. So here is Medicane Celano from January 16th 1995 as seen by the MIVIRI instrument of Meteosat 5 in visible and thermal infrared. True color isn't possible.
#StormBram as seen by the MODIS instrument aboard NASA's Aqua Satellite about 2 and half hours ago. At the time the main windfield was beginning to move across Ireland, SW England and Wales. Now dangerous winds are about to move into the Hebrides.
December 9, 2025 at 5:14 PM
#StormBram as seen by the MODIS instrument aboard NASA's Aqua Satellite about 2 and half hours ago. At the time the main windfield was beginning to move across Ireland, SW England and Wales. Now dangerous winds are about to move into the Hebrides.
I really really expected this to be a lot harder but thanks to Chiba University and their amazingly still operational FTP service and thanks to Gemini 3.0 Pro, I can present to you Cyclone Val raking the Samoan archipelego 24 days ago OTD as seen by JMA's GMS4 Satellite.
December 8, 2025 at 9:30 PM
I really really expected this to be a lot harder but thanks to Chiba University and their amazingly still operational FTP service and thanks to Gemini 3.0 Pro, I can present to you Cyclone Val raking the Samoan archipelego 24 days ago OTD as seen by JMA's GMS4 Satellite.
Well after a considerable gemini skill issue that I didn't question sufficiently, I finally got it to write me a scipt that can correctly access satellite data from EUMETSAT. As seen here by images of Subtropical Storm Karen from earlier this year.
December 8, 2025 at 8:10 PM
Well after a considerable gemini skill issue that I didn't question sufficiently, I finally got it to write me a scipt that can correctly access satellite data from EUMETSAT. As seen here by images of Subtropical Storm Karen from earlier this year.
#StormBram has been named and will slam into the British Isles late tommorow. It is expected to bring storm-force gusts to large parts of Ireland & esp. Scotland. Most dangerous conditions are expected in the Hebrides, where gusts in excess of 160 km/h (100 mph) will be possible.
December 8, 2025 at 8:09 PM
#StormBram has been named and will slam into the British Isles late tommorow. It is expected to bring storm-force gusts to large parts of Ireland & esp. Scotland. Most dangerous conditions are expected in the Hebrides, where gusts in excess of 160 km/h (100 mph) will be possible.
I have really been cooking today👨🍳Now I have also implemented the ability to access historical Microwave images from the "TC-PRIMED" dataset. Here are a few samples, once again for the infamous Dorian, as it was punishing the island of Great Abaco.
December 7, 2025 at 1:42 AM
I have really been cooking today👨🍳Now I have also implemented the ability to access historical Microwave images from the "TC-PRIMED" dataset. Here are a few samples, once again for the infamous Dorian, as it was punishing the island of Great Abaco.
It was more difficult then I thought it would be but I can now also generate GOES-R and Himawari 8/9 'True Color' images. Major Hurricane Dorian from 2019 raking great Abaco and Super Typhoon Goni (RollyPH) from 2020 bearing down on Catanduanes attached for demonstration.
December 7, 2025 at 12:34 AM
It was more difficult then I thought it would be but I can now also generate GOES-R and Himawari 8/9 'True Color' images. Major Hurricane Dorian from 2019 raking great Abaco and Super Typhoon Goni (RollyPH) from 2020 bearing down on Catanduanes attached for demonstration.
I have now implemented the Visible (both single channel and 'true color' modes) for MODIS and VIIRS. To celebrate, here are the respective images of infamous Major Hurricane Melissa, as she approached her devestating landfall in Jamaica from MODIS and VIIRS.
December 6, 2025 at 5:26 PM
I have now implemented the Visible (both single channel and 'true color' modes) for MODIS and VIIRS. To celebrate, here are the respective images of infamous Major Hurricane Melissa, as she approached her devestating landfall in Jamaica from MODIS and VIIRS.
Trying to access the same data for Haiyan however already revealed a weakness of this mode: It requires the moon. In the case of Haiyan, the moon had already long set by the time the image was taken (and was a 20% waxing crescent anyway), so no usable image can be generated.
December 5, 2025 at 8:32 PM
Trying to access the same data for Haiyan however already revealed a weakness of this mode: It requires the moon. In the case of Haiyan, the moon had already long set by the time the image was taken (and was a 20% waxing crescent anyway), so no usable image can be generated.
I have once again been cooking today. So far I have already successfully implemented the 700 nm Day/Night channel of VIIRS that essentially uses moonlight to turn night into day. Once again demonstrating with Typhoon Bopha on the way to its devestating landfall in Mindanao.
December 5, 2025 at 8:32 PM
I have once again been cooking today. So far I have already successfully implemented the 700 nm Day/Night channel of VIIRS that essentially uses moonlight to turn night into day. Once again demonstrating with Typhoon Bopha on the way to its devestating landfall in Mindanao.
Animation of the infamous 2022 Hunga Tonga–Hunga Haʻapai eruption to celebrate my ability to produce EIR loops for any coordinates.
Data courtesy of JMA and provided via AWS, Visualisation is my own with help from Gemini 3.0 Pro
Data courtesy of JMA and provided via AWS, Visualisation is my own with help from Gemini 3.0 Pro
December 3, 2025 at 10:49 PM
Animation of the infamous 2022 Hunga Tonga–Hunga Haʻapai eruption to celebrate my ability to produce EIR loops for any coordinates.
Data courtesy of JMA and provided via AWS, Visualisation is my own with help from Gemini 3.0 Pro
Data courtesy of JMA and provided via AWS, Visualisation is my own with help from Gemini 3.0 Pro
On this day in 2004 Typhoon Nanmadol made landfall in Luzon. Even tho the storm had weakened considerably from its peak intensity as a Super Typhoon (JTWC), it still packed a punch. 70 people perished and damages amounted to 39.3 Million dollars (67 mil in todays money). #OTDwx
December 2, 2025 at 11:09 PM
On this day in 2004 Typhoon Nanmadol made landfall in Luzon. Even tho the storm had weakened considerably from its peak intensity as a Super Typhoon (JTWC), it still packed a punch. 70 people perished and damages amounted to 39.3 Million dollars (67 mil in todays money). #OTDwx
OTD in 1991 Tropical Storm Zelda moved through the Marshall Islands and destroyed 60% of residences on Ebeye Island, leaving 6,000 people homless. Operations of Kwajalein Missile Range were also disrupted severely. Mainly just wanted to show off historical TC sat imagery ability
November 28, 2025 at 10:50 PM
OTD in 1991 Tropical Storm Zelda moved through the Marshall Islands and destroyed 60% of residences on Ebeye Island, leaving 6,000 people homless. Operations of Kwajalein Missile Range were also disrupted severely. Mainly just wanted to show off historical TC sat imagery ability
Confusingly there appears to be a dual entry on the ATCF with both Tropical Depression Senyar and Tropical Depression 34W. Tho the JTWC website shows it as TD34W, implying that that is the official JTWC designation.
November 28, 2025 at 9:13 PM
Confusingly there appears to be a dual entry on the ATCF with both Tropical Depression Senyar and Tropical Depression 34W. Tho the JTWC website shows it as TD34W, implying that that is the official JTWC designation.
By now I am late to the party that Senyar has made history by crossing the Malay Peninsula from the west. JMA lists it as a TD at the moment but it is forecast to become a tropical storm again. JMA seems to treat it like a new system, so I assume they'll re-name it to Nokaen.
November 28, 2025 at 9:13 PM
By now I am late to the party that Senyar has made history by crossing the Malay Peninsula from the west. JMA lists it as a TD at the moment but it is forecast to become a tropical storm again. JMA seems to treat it like a new system, so I assume they'll re-name it to Nokaen.
Update: Koto is basically dead already😂
November 27, 2025 at 11:41 PM
Update: Koto is basically dead already😂
Typhoon Koto has suffered mightily at the hands of a joint assault from wind shear and dry air entrainment, compounded by decreased oceanic potential. CDO has mostly unravelled and Koto is likely to soon drop to TS status. Some re-strengthening is possible out 3-5 days.
November 27, 2025 at 1:48 PM
Typhoon Koto has suffered mightily at the hands of a joint assault from wind shear and dry air entrainment, compounded by decreased oceanic potential. CDO has mostly unravelled and Koto is likely to soon drop to TS status. Some re-strengthening is possible out 3-5 days.
The system has some very nice spin to it and much more organized convection to it then yesterday. Looking at UW-CIMSS analysis it is also apparent that in particular the mid to upper-level reflection of this system has become a lot more coherent compared to yesterday
November 26, 2025 at 11:40 PM
The system has some very nice spin to it and much more organized convection to it then yesterday. Looking at UW-CIMSS analysis it is also apparent that in particular the mid to upper-level reflection of this system has become a lot more coherent compared to yesterday
Invest 96B near Sri Lanka has been put under Tropical Cyclone formation alert by JTWC and labelled as a depression by IMD. The next name is Ditwah. It's likely to develop into a tropical storm under marginally favourable conditions as it stays near the (S)E coast of India.
November 26, 2025 at 11:40 PM
Invest 96B near Sri Lanka has been put under Tropical Cyclone formation alert by JTWC and labelled as a depression by IMD. The next name is Ditwah. It's likely to develop into a tropical storm under marginally favourable conditions as it stays near the (S)E coast of India.
Technically, according to JTWC best track, this unnamed storm from 2017 had briefly crossed into the strait of Malacca and then made a landfall on the W side of Malaysia
November 26, 2025 at 11:32 PM
Technically, according to JTWC best track, this unnamed storm from 2017 had briefly crossed into the strait of Malacca and then made a landfall on the W side of Malaysia
Tropical Storm Senyar looks very dishevelled right now. However JTWC still insists that it will survive to make an almost unprecedented landfall on the western coast Malaysia not far from Kuala Lumpur. Only one cyclone has ever made landfall (technically) on this side of Malaysia
November 26, 2025 at 11:32 PM
Tropical Storm Senyar looks very dishevelled right now. However JTWC still insists that it will survive to make an almost unprecedented landfall on the western coast Malaysia not far from Kuala Lumpur. Only one cyclone has ever made landfall (technically) on this side of Malaysia