Cyclocane

( cyclocane is a CYCLOne and hurriCANE tracker by hayley )

English Español Deutsch Français 日本語

TWENTYONE Current Status

Current Wind Speed 30 knots / 35 MPH

Max Predicted Wind Speed 40 knots / 46 MPH at 2025-09-04T12:00:00.000Z

TWENTYONE Land Hazards

Northwest Pacific Weather Warnings

Taiwan Central Weather Bureau: no warnings
Hong Kong Observatory: no warnings

TWENTYONE Tracker

TWENTYONE Satellite Loop

TWENTYONE Alternate Tracking Map

TWENTYONE Spaghetti Models

Spaghetti models for TWENTYONE can be found here:

TWENTYONE spaghetti models page »

TWENTYONE Watches and Warnings

TROPICAL DEPRESSION TWENTYONE Tropical Cyclone Update

TROPICAL DEPRESSION TWENTYONE Public Advisory

WTPN31 PGTW 031500
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL DEPRESSION 21W (TWENTYONE) WARNING NR 001//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/021451ZSEP2025//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. TROPICAL DEPRESSION 21W (TWENTYONE) WARNING NR 001    
   01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   031200Z --- NEAR 27.0N 131.6E
     MOVEMENT PAST SIX HOURS - 345 DEGREES AT 14 KTS
     POSITION ACCURATE TO WITHIN 030 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF 
     SATELLITE AND RADAR
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   REPEAT POSIT: 27.0N 131.6E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   040000Z --- 30.0N 131.2E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
                            100 NM SOUTHEAST QUADRANT
                            000 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 015 DEG/ 15 KTS
    ---
   24 HRS, VALID AT:
   041200Z --- 32.8N 132.1E
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
                            120 NM SOUTHEAST QUADRANT
                            000 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   VECTOR TO 36 HR POSIT: 055 DEG/ 11 KTS
    ---
   36 HRS, VALID AT:
   050000Z --- 34.0N 134.2E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
                            130 NM SOUTHEAST QUADRANT
                            020 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   VECTOR TO 48 HR POSIT: 070 DEG/ 12 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   051200Z --- 34.8N 136.9E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT
                            130 NM SOUTHEAST QUADRANT
                            020 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   VECTOR TO 72 HR POSIT: 085 DEG/ 15 KTS
    ---
   72 HRS, VALID AT:
   061200Z --- 35.2N 144.4E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 210 NM NORTHEAST QUADRANT
                            220 NM SOUTHEAST QUADRANT
                            190 NM SOUTHWEST QUADRANT
                            180 NM NORTHWEST QUADRANT
    ---
REMARKS:
031500Z POSITION NEAR 27.8N 131.5E.
03SEP25. TROPICAL DEPRESSION 21W (TWENTYONE), LOCATED
APPROXIMATELY 648 NM SOUTHWEST OF YOKOSUKA, JAPAN, HAS TRACKED
NORTH-NORTHWESTWARD AT 14 KNOTS OVER THE PAST SIX HOURS.
MINIMUM CENTRAL PRESSURE AT 031200Z IS 1002 MB. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 031200Z IS 12 FEET. NEXT WARNINGS
AT 032100Z, 040300Z, 040900Z AND 041500Z.
2. THIS CANCELS AND SUPERSEDES REF A (WTPN21 PGTW 021500).//
NNNN

Public Advisory not available for this storm.

TROPICAL DEPRESSION TWENTYONE Forecast Discussion

Forecast Discussion not available for this storm.

TWENTYONE storm path from JTWC

Time	Speed	Location	Status
2025-09-03T12:00:00.000Z	30 knots	27.0, 131.6
2025-09-04T00:00:00.000Z	35 knots	30.0, 131.2
2025-09-04T12:00:00.000Z	40 knots	32.8, 132.1
2025-09-05T00:00:00.000Z	35 knots	34.0, 134.2
2025-09-05T12:00:00.000Z	35 knots	34.8, 136.9
2025-09-06T12:00:00.000Z	35 knots	35.2, 144.4

---

Hurricane Forecast   |   Tropical Storm Risk   |   Hurricane Spaghetti Models   |   Cyclone and Hurricane Names

---

Cyclocane   |   National Hurricane Center   |   Joint Typhoon Warning Center   |   Japan Meteorological Agency

site by Hayley Croft

Play solitaire and track all of the cyclocane storms at the same time at Hurricane Solitaire.

---

---