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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.
A small percentage of post-tropical cyclones will become tropical again. In that case, this page will be updated again with the latest advisories and warnings.
Current Wind Speed 25 knots / 29 MPH
Max Predicted Wind Speed 25 knots / 29 MPH at
Alternate tracking maps are only available on NHC tracked storms.
Spaghetti models for Sonamu can be found here:
SONAMU spaghetti models page »
Watches and Warnings are currently only available for NHC tracked storms.
WTPQ20 RJTD 080000 RSMC TROPICAL CYCLONE ADVISORY NAME TD DOWNGRADED FROM TS 1301 SONAMU (1301) ANALYSIS PSTN 080000UTC 06N 108E MOVE ALMOST STATIONARY PRES 1006HPA =
WTPN31 PGTW 082100 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL DEPRESSION 01W (SONAMU) WARNING NR 022 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 081800Z --- NEAR 4.8N 109.8E MOVEMENT PAST SIX HOURS - 130 DEGREES AT 06 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY REPEAT POSIT: 4.8N 109.8E --- FORECASTS: 12 HRS, VALID AT: 090600Z --- 4.2N 110.1E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 145 DEG/ 04 KTS --- 24 HRS, VALID AT: 091800Z --- 3.6N 110.5E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 082100Z POSITION NEAR 4.6N 109.9E. TROPICAL DEPRESSION 01W (SONAMU), LOCATED APPROXIMATELY 305 NM WEST OF BRUNEI, HAS TRACKED SOUTHEASTWARD AT 06 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY INDICATES ISOLATED FLARES OF CONVECTION AROUND A DISORGANIZED AND BROAD LOW-LEVEL CIRCULATION CENTER (LLCC). SCATTEROMETER DATA FROM 081632Z SHOWS A BROAD AREA OF TROUGHING WITH A WEAK (10-15 KNOT) CIRCULATION CENTER EMBEDDED WITHIN. VERTICAL WIND SHEAR HAS INCREASED TO 30 TO 40 KNOTS AS THE SYSTEM HAS TRACKED TO THE SOUTHEAST. DUE TO THE DISORGANIZED AND WEAK NATURE OF THE SYSTEM AND DECREASING UPPER-LEVEL ENVIRONMENT, 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 081800Z IS 11 FEET.// NNNN
Forecast Discussion not available for this storm.
Time | Speed | Location | Status |
---|---|---|---|
25 knots | 4.8, 109.8 | ||
20 knots | 4.2, 110.1 | dissipating | |
20 knots | 3.6, 110.5 | dissipated |
Time | Speed | Location | Status |
---|---|---|---|
knots | 6.0, 108.0 |
Time | Speed | Location | Status |
---|---|---|---|
25 knots | 4.8, 109.8 | ||
20 knots | 4.2, 110.1 | dissipating | |
20 knots | 3.6, 110.5 | dissipated |
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