WPAC: MERBOK - Post-Tropical

[Yellow Evan]

Why is the JTWC ignoring ASCAT?

[cycloneye]

Final warning from JTWC.

WTPN31 PGTW 122100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE FINAL WARNING//
RMKS/
1. TROPICAL STORM 04W (MERBOK) WARNING NR 008
01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
121800Z --- NEAR 23.0N 114.6E
MOVEMENT PAST SIX HOURS - 005 DEGREES AT 09 KTS
POSITION ACCURATE TO WITHIN 045 NM
POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
SATELLITE AND RADAR
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 23.0N 114.6E
---
FORECASTS:
12 HRS, VALID AT:
130600Z --- 24.9N 115.6E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 060 DEG/ 13 KTS
---
24 HRS, VALID AT:
131800Z --- 26.1N 118.2E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
122100Z POSITION NEAR 23.5N 114.9E.
TROPICAL STORM (TS) 04W (MERBOK), LOCATED APPROXIMATELY 47 NM NORTH-
NORTHEAST OF HONG KONG, HAS TRACKED NORTHWARD AT 09 KNOTS OVER THE
PAST SIX HOURS. ANIMATED RADAR IMAGERY FROM HONG KONG INDICATES THAT
TS 04W MADE LANDFALL AT 12/14-15Z SHORTLY AFTER THE CENTER PASSED
10NM EAST OF WAGLAN ISLAND (45045), WHICH REPORTED MAXIMUM WINDS OF
54 KNOTS WITH A MINIMUM SLP NEAR 990.3MB. ANIMATED ENHANCED INFRARED
SATELLITE IMAGERY AND RJTD RADAR FIXES SHOW THAT THE SYSTEM HAS
CONTINUED TO TRACK FURTHER INLAND AND IS WEAKENING DUE TO LAND
INTERACTION AND MODERATE, NORTHERLY VERTICAL WIND SHEAR. TS 04W IS
FORECAST TO ROUND THE NORTHWEST PERIPHERY OF THE SUBTROPICAL RIDGE
AFTER TAU 12 AND WILL BEGIN TO INTERACT WITH THE MIDLATITUDE
WESTERLIES AND STRONG BAROCLINIC ZONE, HOWEVER, THE SYSTEM IS
EXPECTED TO DISSIPATE OVER LAND BEFORE COMPLETING EXTRA-TROPICAL
TRANSITION. AFTER RE-EMERGING OVER THE EAST SEA (NEAR TAU 36), THE
REMNANTS WILL RE-STRENGTHEN AS AN EXTRA-TROPICAL LOW ON THE NEAR-
STATIONARY BAIU BOUNDARY, WHICH IS THEN EXPECTED TO TRACK CLOSE TO
OKINAWA BY TAU 48. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE
JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY
MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 121800Z IS 12 FEET.//

[1900hurricane]

JMA is still carrying Merbok as a Tropical Depression.

TD
Issued at 00:40 UTC, 13 June 2017

<Analysis at 00 UTC, 13 June>
Scale -
Intensity -
TD
Center position N24°00' (24.0°)
E115°00' (115.0°)
Direction and speed of movement N 20 km/h (10 kt)
Central pressure 1002 hPa

[euro6208]

ANIMATED RADAR IMAGERY FROM HONG KONG INDICATES THAT
TS 04W MADE LANDFALL AT 12/14-15Z SHORTLY AFTER THE CENTER PASSED
10NM EAST OF WAGLAN ISLAND (45045), WHICH REPORTED MAXIMUM WINDS OF
54 KNOTS WITH A MINIMUM SLP NEAR 990.3MB.

[1900hurricane]

Just for completion's sake, here's the SHARPpy version of the 00Z Hong Kong sounding immediately following landfall to complement the others I've posted in this thread.