WPAC SINLAKU: Severe Tropical Storm - Discussion

[Chacor]

Still going from JMA:

WTPQ20 RJTD 201200
RSMC TROPICAL CYCLONE ADVISORY
NAME STS 0813 SINLAKU (0813)
ANALYSIS
PSTN 201200UTC 35.0N 146.3E FAIR
MOVE E 14KT
PRES 992HPA
MXWD 050KT
GUST 070KT
30KT 90NM SOUTHEAST 60NM NORTHWEST
FORECAST
24HF 211200UTC 35.0N 153.2E 85NM 70% EXTRATROPICAL LOW =

[HURAKAN]

It has to be non-tropical by now.

[RattleMan]

JMA disagrees:

WTPQ20 RJTD 202100
RSMC TROPICAL CYCLONE ADVISORY
NAME TS 0813 SINLAKU (0813)
ANALYSIS
PSTN 202100UTC 35.1N 151.2E FAIR
MOVE E 24KT
PRES 994HPA
MXWD 045KT
GUST 065KT
30KT 90NM SOUTHEAST 60NM NORTHWEST
FORECAST
24HF 212100UTC 35.1N 160.2E 85NM 70% EXTRATROPICAL LOW =

[Chacor]

It's gone now.

WTPQ20 RJTD 210000
RSMC TROPICAL CYCLONE ADVISORY
NAME DEVELOPED LOW FORMER TS 0813 SINLAKU (0813)
ANALYSIS
PSTN 210000UTC 35N 152E
MOVE E 25KT
PRES 996HPA
MXWD 040KT
30KT 300NM =

[Chacor]

This doesn't really look so much "extratropical" but rather more like a "remnant low"...