Cyclocane

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KROSA Current Status

Current Wind Speed 45 knots / 52 MPH

Max Predicted Wind Speed 45 knots / 52 MPH at 2025-08-03T18:00:00.000Z

KROSA Land Hazards

Northwest Pacific Weather Warnings

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

KROSA Tracker

KROSA Satellite Loop

KROSA Alternate Tracking Map

KROSA Spaghetti Models

Spaghetti models for KROSA can be found here:

KROSA spaghetti models page »

KROSA Watches and Warnings

TROPICAL STORM KROSA Tropical Cyclone Update

TROPICAL STORM KROSA Public Advisory

WTPN31 PGTW 032100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL STORM 12W (KROSA) WARNING NR 045//
RMKS/
1. TROPICAL STORM 12W (KROSA) WARNING NR 045    
   02 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   031800Z --- NEAR 42.0N 160.3E
     MOVEMENT PAST SIX HOURS - 070 DEGREES AT 22 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   BECOMING EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
                            120 NM SOUTHEAST QUADRANT
                            120 NM SOUTHWEST QUADRANT
                            045 NM NORTHWEST QUADRANT
   REPEAT POSIT: 42.0N 160.3E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   040600Z --- 43.2N 166.0E
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
   RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
                            120 NM SOUTHEAST QUADRANT
                            120 NM SOUTHWEST QUADRANT
                            070 NM NORTHWEST QUADRANT
   VECTOR TO 24 HR POSIT: 080 DEG/ 23 KTS
    ---
   24 HRS, VALID AT:
   041800Z --- 43.8N 172.4E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   EXTRATROPICAL
    ---
REMARKS:
032100Z POSITION NEAR 42.3N 161.7E.
03AUG25. TROPICAL STORM 12W (KROSA), LOCATED APPROXIMATELY 866 NM
EAST-NORTHEAST OF MISAWA, JAPAN, HAS TRACKED EAST-NORTHEASTWARD
AT 22 KTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED (EIR)
SATELLITE IMAGERY DEPICTS AN ELONGATED AND HEAVILY SHEARED SYSTEM,
WITH NEARLY FULLY EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) AND
REMAINING ASSOCIATED CONVECTION TO THE EAST. ADDITIONALLY, AN OLDER
021048Z METOP-B ASCAT IMAGE SHOWED HIGHLY ASYMMETRIC WIND FIELD,
WITH HIGHER INTENSITIES ALONG THE SOUTHERN PORTION OF THE
CIRCULATION. THE SYSTEM IS CURRENTLY BECOMING EXTRATROPICAL,
DUE TO CROSSING INTO THE BAROCLINIC ZONE TO THE NORTH. TS 12W IS
POSITIONED POLEWARD OF A WESTERN EXTENSION OF A SUBTROPICAL JET.
ASSESSMENT IS SUPPORTED BY GFS AND ECMWF PHASE CYCLONE DIAGRAMS.
ADDITIONALLY, VERY COLD (17-18 C) SEA SURFACE TEMPERATURES AND
INCREASING VERTICAL WIND SHEAR ARE CREATING AN INCREASINGLY HOSTILE
ENVIRONMENT FOR TROPICAL DEVELOPMENT. NUMERICAL MODEL GUIDANCE IS
IN STRONG AGREEMENT IN REGARD TO THE TRACK AND INTENSITY, RESULTING
IN HIGH CONFIDENCE OF THE OFFICIAL JTWC FORECAST. 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.
MINIMUM CENTRAL PRESSURE AT 031800Z IS 983 MB. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 031800Z IS 22 FEET. REFER TO TROPICAL STORM 13W (BAILU) 
WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.
//
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Public Advisory not available for this storm.

TROPICAL STORM KROSA Forecast Discussion

Forecast Discussion not available for this storm.

KROSA storm path from JTWC

Time	Speed	Location	Status
2025-08-03T18:00:00.000Z	45 knots	42.0, 160.3
2025-08-04T06:00:00.000Z	35 knots	43.2, 166.0
2025-08-04T18:00:00.000Z	30 knots	43.8, 172.4

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