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This is the final warning / advisory for this storm as it has weakened below warning levels and/or the storm system is no longer a tropical cyclone.

Go to the main page to see active storms.

TAPAH Current Status

Current Wind Speed 55 knots / 63 MPH

Max Predicted Wind Speed 55 knots / 63 MPH at

TAPAH Land Hazards

Northwest Pacific Weather Warnings
Taiwan Central Weather Bureau: no warnings
Hong Kong Observatory: no warnings
China Meteorological Administration: no warnings

TAPAH Tracker

TAPAH Satellite Loop

TAPAH Alternate Tracking Map

TAPAH Spaghetti Models

Spaghetti models for TAPAH can be found here:

TAPAH spaghetti models page »

TAPAH Watches and Warnings

TROPICAL STORM TAPAH Tropical Cyclone Update

TROPICAL STORM TAPAH Public Advisory

WTPN31 PGTW 222100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 18W (TAPAH) WARNING NR 016//
RMKS/
1. TROPICAL STORM 18W (TAPAH) WARNING NR 016    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   221800Z --- NEAR 35.4N 131.5E
     MOVEMENT PAST SIX HOURS - 050 DEGREES AT 24 KTS
     POSITION ACCURATE TO WITHIN 050 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 170 NM NORTHEAST QUADRANT
                            105 NM SOUTHEAST QUADRANT
                            100 NM SOUTHWEST QUADRANT
                            100 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 230 NM NORTHEAST QUADRANT
                            205 NM SOUTHEAST QUADRANT
                            190 NM SOUTHWEST QUADRANT
                            165 NM NORTHWEST QUADRANT
   REPEAT POSIT: 35.4N 131.5E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   230600Z --- 39.2N 137.0E
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 050 KT WINDS - 080 NM NORTHEAST QUADRANT
                            090 NM SOUTHEAST QUADRANT
                            080 NM SOUTHWEST QUADRANT
                            060 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 180 NM NORTHEAST QUADRANT
                            160 NM SOUTHEAST QUADRANT
                            180 NM SOUTHWEST QUADRANT
                            120 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 055 DEG/ 35 KTS
    ---
   24 HRS, VALID AT:
   231800Z --- 43.1N 144.7E
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
                            200 NM SOUTHEAST QUADRANT
                            170 NM SOUTHWEST QUADRANT
                            100 NM NORTHWEST QUADRANT
    ---
REMARKS:
222100Z POSITION NEAR 36.3N 132.9E.
22SEP19. TROPICAL STORM 18W (TAPAH), LOCATED APPROXIMATELY 72 NM
NORTH-NORTHWEST OF IWAKUNI, JAPAN, HAS TRACKED NORTHEASTWARD AT
24 KNOTS OVER THE PAST SIX HOURS. TS 18W HAS CURRENTLY UNDERGOING 
EXTRA-TROPICAL TRANSITION (ETT) AND IS RAPIDLY ACCELERATING 
NORTHEASTWARD WITHIN THE MIDLATITUDE SOUTHWESTERLIES. THE SYSTEM HAS 
BEGUN TO DISPLAY FRONTAL CHARACTERISTICS IN SATELLITE IMAGERY 
SUGGESTING THAT IT WILL SOON BE AN EXTRA-TROPICAL SYSTEM. ANIMATED 
ENHANCED INFRARED SATELLITE DEPICTS A WEAK, ELONGATED LOW-LEVEL 
CIRCULATION (LLC) WITH DEEP CONVECTION SHEARED TO THE NORTHEAST. A 
221711Z AMSR2 36 GHZ MICROWAVE IMAGE SHOWS EXTENSIVE DEEP CONVECTION 
WITH FRONTAL CHARACTERISTICS HOWEVER, THERE IS NO LCC EVIDENT. THE 
INITIAL POSITION IS BASED ON THE IR LOOP AND THE JMA RADAR LOOP. THE 
OVERALL CONFIDENCE IN THE INITIAL POSITION IS LOW DUE TO THE 
ELONGATED NATURE AND WEAK SIGNATURE OF THE LCC. THE INITIAL 
INTENSITY OF 55 KNOTS WAS BASED ON AN EARLIER ASCAT IMAGE AND 
SUPPORTED BY BOTH A PGTW EXTRA-TROPICAL SATELLITE FIX OF T3.5 (55 
KNOTS) AND A RECENT SATCON ESTIMATE OF 53 KNOTS. ENVIRONMENTAL 
CONDITIONS ARE BECOMING INCREASINGLY UNFAVORABLE. THE SYSTEM IS 
CURRENTLY IN AN AREA OF HIGH (30-40 KNOT) VERTICAL WIND SHEAR AND IS 
TRACKING OVER COOLER (25-26 CELSIUS) SEA SURFACE TEMPERATURES. THE 
POOR ENVIRONMENT IS OFFSET BY STRONG POLEWARD OUTFLOW. TS TAPAH IS 
TRACKING NORTHEASTWARD ALONG THE NORTHWEST PERIPHERY OF THE 
SUBTROPICAL RIDGE (STR) LOCATED TO THE SOUTHEAST. THE SYSTEM IS 
FORECAST TO TRACK TO THE NORTHEAST FOR THE DURATION OF THE FORECAST. 
THE SYSTEM WILL CONTINUE TO EXPERIENCE A DEGRADING ENVIRONMENT WHICH 
WILL CAUSE A WEAKENING TREND AS EXTRATROPICAL TRANSITION OCCURS. TS 
18W WILL COMPLETE ETT BY TAU 12 AND CONTINUE TO ACCELERATE 
NORTHEASTWARD, EVENTUALLY MAKING LANDFALL ON NORTHERN HONSHU AND 
HOKKAIDO AFTER TAU 12. THE SYSTEM IS FORECAST TO REMAIN A STRONG 
COLD-CORE LOW WITH GALE-FORCE WINDS ANTICIPATED OVER NORTHERN 
HONSHU. DYNAMIC MODEL GUIDANCE REMAINS IN STRONG AGREEMENT THROUGH 
TAU 24 LENDING HIGH CONFIDENCE IN THE OFFICIAL JTWC FORECAST TRACK. 
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 221800Z
IS 26 FEET.//
NNNN

Public Advisory not available for this storm.

TROPICAL STORM TAPAH Forecast Discussion

Forecast Discussion not available for this storm.

TAPAH storm path from JTWC

Time Speed Location Status
55 knots 35.4, 131.5
50 knots 39.2, 137.0
45 knots 43.1, 144.7


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