WPAC: INVEST 90W

[supercane4867]

25.7N 156.3E

[Meow]

This is an extratropical cyclone per JMA. It has already formed south of Kyushu on 5 January.



WWJP25 RJTD 140000
WARNING AND SUMMARY 140000.
...
SUMMARY.
...
LOW 1008 HPA AT 25N 156E SW 10 KT.
...

JAPAN METEOROLOGICAL AGENCY.=

[euro6208]

AN AREA OF CONVECTION (REMNANTS OF TD 03W) HAS PERSISTED
NEAR 32.2N 138.6E, APPROXIMATELY 200 NM SOUTH-SOUTHWEST OF YOKOSUKA,
JAPAN. ANIMATED INFRARED SATELLITE IMAGERY SHOWS THE REMNANTS OF TD
03W HAVE MAINTAINED A BROAD LOW LEVEL CIRCULATION CENTER (LLCC) WITH
PERSISTENT SHALLOW CONVECTION. ALTHOUGH THIS SYSTEM HAS DISSIPATED
AS A SIGNIFICANT TROPICAL CYCLONE, IT HAS BEGUN TO EXHIBIT
SUBTROPICAL CHARACTERISTICS WHILE PERSISTING OVER COOLER SEA SURFACE
TEMPERATURES (<24 DEGREES CELSIUS) IN CLOSE PROXIMITY TO THE
BAROCLINIC ZONE. A 132030Z SSMIS MICROWAVE IMAGE DEPICTS ORGANIZED
SHALLOW CONVECTION ASSOCIATED WITH AN ELONGATED LLCC. A RECENT
SCATTEROMETRY PASS INDICATES 20 KNOT WINDS SURROUNDING THE LLCC WITH
STRONGER GRADIENT FLOW TO THE NORTHWEST. UPPER LEVEL ANALYSIS
INDICATES THE SYSTEM IS LOCATED TO THE SOUTHEAST OF AN UPPER LEVEL
RIDGE IN AN AREA OF LOW VERTICAL WIND SHEAR (5 TO 10 KNOTS). MAXIMUM
SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23 KNOTS. MINIMUM SEA
LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1007 MB. DUE TO THE
PERSISTENT 20 KNOT LLCC AND SUBTROPICAL NATURE OF THE SYSTEM, THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS LOW.

[Typhoon Hunter]

That's Yagi's remnants Euro, not Invest 90W which appeared to be spawned from a vigorous TUTT. Upcoming area to watch would appear to be off east coast of Philippines where a number of model runs are spawning a TC.

[ManilaTC]

Hi James, JMA is reporting on that area in the East of Mindanao as a LPA already... No invest yet