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2026 Global Tropical Cyclone Discussion

The South Atlantic may officially become a TC basin by December 2026 according to a thread on Storm2K. That’s exciting to me, because I have been looking forward to it.
 
According to the Brazilian Navy, we have Subtropical Storm Caioba in the South Atlantic, with a subtropical depression to its NW, which is apparently the first time in history that two simultaneous cyclones have existed in the South Atlantic.
 
In my absence I was unable to mention that the South Pacific name Urmil was finally used, for Tropical Cyclone Urmil, which according to RSMC Nadi, is the latest first named storm on record in the South Pacifc. The JTWC noted the peak intensity at 65 kts (75 mph), barely a hurricane-force tropical cyclone. Its JTWC designation was 23P.
 
An invest in the eastern Australian Region has become Tropical Cyclone 24P by the JTWC as of the 00Z March 4th ATCF update.

IMG_5681.jpeg
 
An Invest on the other side of Australia has become Tropical Cyclone 25S. 25S is expected to be short lived as it begins to interact with Invest 93S to its southeast and dissipates or gets absorbed into 93S in the near future.
 
Tropical Cyclones 24P and 25S were short-lived cyclones, lasting about a day each. They are dissipated now, but now we have Tropical Cyclone 26S off of Western Australia, which isn’t expected to last long either. Sloppy times right now lol.
 
Invest 95W in the Western Pacific has been designated Tropical Storm Nuri by JMA, but it continues to be called an invest by the JTWC at the moment with a high chance of development in the next 24-48 hours.
IMG_5949.pngIMG_5950.gif
WTPN21 PGTW 100300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT (INVEST 95W)//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
090 NM EITHER SIDE OF A LINE FROM 11.0N 136.9E TO 13.3N 139.2E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 23 TO 28 KNOTS. METSAT
IMAGERY AT 100000Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 11.2N 137.1E. THE SYSTEM IS MOVING WEST-NORTHWESTWARD AT 05
KNOTS.
2. REMARKS: THE AREA OF CONVECTION (INVEST 95W) PREVIOUSLY LOCATED NEAR
10.0N 139.7E IS NOW LOCATED NEAR 11.2N 137.1E, APPROXIMATELY 119 NM
NORTH-NORTHWEST OF YAP. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A
092354Z METOP-C ASCAT PASS DEPICT AN ELONGATED LOW-LEVEL CIRCULATION
EMBEDDED IN FLARING CONVECTION WITH SWATHS OF ELEVATED WINDS ALONG THE
EASTERN AND NORTHWESTERN PERIPHERIES. THE CIRCULATION IS CONSIDERED TOO
ILL-DEFINED TO JUSTIFY ISSUANCE OF WARNINGS AT THIS TIME. ENVIRONMENTAL
ANALYSIS REVEALS A MARGINALLY FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH
MODERATE POLEWARD UPPER LEVEL OUTFLOW ALOFT, MODERATE VERTICAL WIND
SHEAR (15-20 KTS), AND WARM SEA SURFACE TEMPERATURES (28-29 C).
DETERMINISTIC AND ENSEMBLE MODELS AGREE ON SOME DEGREE OF CONSOLIDATION
OVER THE NEXT 24 HOURS PRIOR TO VERTICAL SHEAR BECOMING LESS FAVORABLE
FOR DEVELOPMENT IN 24 TO 48 HOURS. MODELS ALSO AGREE ON A GRADUAL
TRANSIT NORTHEASTWARD AROUND THE WESTERN PERIPHERY OF A MID-LEVEL RIDGE
TO THE SOUTHEAST OF THE MARIANAS DURING THE NEXT 48 HOURS. MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 23 TO 28 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1001 MB. THE POTENTIAL FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS
IS HIGH.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY
110300Z.//
NNNN
 
Atlantic said:
Invest 95W in the Western Pacific has been designated Tropical Storm Nuri by JMA, but it continues to be called an invest by the JTWC at the moment with a high chance of development in the next 24-48 hours.
View attachment 51344View attachment 51345
WTPN21 PGTW 100300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FORMATION ALERT (INVEST 95W)//
RMKS/
1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
090 NM EITHER SIDE OF A LINE FROM 11.0N 136.9E TO 13.3N 139.2E
WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY
ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME.
WINDS IN THE AREA ARE ESTIMATED TO BE 23 TO 28 KNOTS. METSAT
IMAGERY AT 100000Z INDICATES THAT A CIRCULATION CENTER IS LOCATED
NEAR 11.2N 137.1E. THE SYSTEM IS MOVING WEST-NORTHWESTWARD AT 05
KNOTS.
2. REMARKS: THE AREA OF CONVECTION (INVEST 95W) PREVIOUSLY LOCATED NEAR
10.0N 139.7E IS NOW LOCATED NEAR 11.2N 137.1E, APPROXIMATELY 119 NM
NORTH-NORTHWEST OF YAP. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A
092354Z METOP-C ASCAT PASS DEPICT AN ELONGATED LOW-LEVEL CIRCULATION
EMBEDDED IN FLARING CONVECTION WITH SWATHS OF ELEVATED WINDS ALONG THE
EASTERN AND NORTHWESTERN PERIPHERIES. THE CIRCULATION IS CONSIDERED TOO
ILL-DEFINED TO JUSTIFY ISSUANCE OF WARNINGS AT THIS TIME. ENVIRONMENTAL
ANALYSIS REVEALS A MARGINALLY FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH
MODERATE POLEWARD UPPER LEVEL OUTFLOW ALOFT, MODERATE VERTICAL WIND
SHEAR (15-20 KTS), AND WARM SEA SURFACE TEMPERATURES (28-29 C).
DETERMINISTIC AND ENSEMBLE MODELS AGREE ON SOME DEGREE OF CONSOLIDATION
OVER THE NEXT 24 HOURS PRIOR TO VERTICAL SHEAR BECOMING LESS FAVORABLE
FOR DEVELOPMENT IN 24 TO 48 HOURS. MODELS ALSO AGREE ON A GRADUAL
TRANSIT NORTHEASTWARD AROUND THE WESTERN PERIPHERY OF A MID-LEVEL RIDGE
TO THE SOUTHEAST OF THE MARIANAS DURING THE NEXT 48 HOURS. MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 23 TO 28 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1001 MB. THE POTENTIAL FOR THE
DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS
IS HIGH.
3. THIS ALERT WILL BE REISSUED, UPGRADED TO WARNING OR CANCELLED BY
110300Z.//
NNNN
Click to expand...
This one became a tropical depression according to the JTWC, but it was short lived and it has already degraded into a remnant low.
 
Another one forms. Welcome to Tropical Cyclone 27P, which could be around for a little while if the models are to be believed.

IMG_6219.jpeg
 
Kds86z said:
Click to expand...

Finally a mature tropical cyclone after all of the slop we’ve had recently. Not looking forward to a powerful landfall though.
 
Atlantic said:
Finally a mature tropical cyclone after all of the slop we’ve had recently. Not looking forward to a powerful landfall though.
Click to expand...
Narelle was named a day ago, and it has since become a 100-kt (115-mph) Category 3 on the SSHWS. BoM expects it to reach Category 5 on the Australian Scale, which is not seen often. It could circumnavigate northern Australia, going from the Coral Sea to the Indian Ocean.

Narelle is the fifth major cyclone globally in 2026 and the first major cyclone in the Australian Region in 2026.
 
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