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Tropical Cyclone HALI : JTWC Advisories
Season 1998-1999 Summaries (Operational Data): [AU] [SIO] [SPAC] [SH]
---> Tropical Cyclone HALI Track Map and Data

WHPS31 PHNC 990312 15:00z
1. TROPICAL CYCLONE 27P WARNING NR 001
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   121200Z6 --- NEAR 20.5S7 159.6W1
     MOVEMENT PAST SIX HOURS - 225 DEGREES AT 07 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   REPEAT POSIT: 20.5S7 159.6W1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   130000Z4 --- 21.3S6 160.8W5
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 24 HR POSIT: 235 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   131200Z7 --- 22.1S5 162.0W9
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 055 NM
   VECTOR TO 36 HR POSIT: 230 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   140000Z5 --- 23.1S6 163.3W3
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 055 NM
   VECTOR TO 48 HR POSIT: 220 DEG/ 10 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   141200Z8 --- 24.6S2 164.7W8
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 055 NM
    ---
REMARKS:
THIS SYSTEM HAS INCREASED IN INTENSITY OVER THE LAST 6 HOURS.
THE LATEST IR SATELLITE IMAGERY INDICATES THIS SYSTEM TO BE
MOREORGANIZED. THIS SYSTEM IS TURNING MORE TO THE SOUTH DUE
TO AMID-LATITUDE TROUGH APPROACHING FROM THE WEST THAT WILL
CAUSE AWEAKNESS IN THE SUB-TROPICAL RIDGE. MAXIMUM SIGNIFICANT
WAVEHEIGHT AT 121200Z IS 15 FEET.THIS WARNING SUPERSEDES AND
CANCELS NAVPACMETOCCEN 111800Z MAR 99TROPICAL CYCLONE FORMATION
ALERT (WHPS21 PHNC 111753 )NEXT WARNINGS AT 130300Z7 AND 131500Z0.//
=========================================================================
WHPS31 PHNC 990313 03:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 002
   01 ACTIVE TROPICAL CYCLONE IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   130000Z4 --- NEAR 20.0S2 160.1W8
     MOVEMENT PAST SIX HOURS - 300 DEGREES AT 04 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   REPEAT POSIT: 20.0S2 160.1W8
    ---
   FORECASTS:
   12 HRS, VALID AT:
   131200Z7 --- 19.8S8 160.4W1
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 285 DEG/ 02 KTS
    ---
   24 HRS, VALID AT:
   140000Z5 --- 19.7S7 160.8W5
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 36 HR POSIT: 285 DEG/ 02 KTS
    ---
   36 HRS, VALID AT:
   141200Z8 --- 19.6S6 161.2W0
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
   VECTOR TO 48 HR POSIT: 270 DEG/ 02 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   150000Z6 --- 19.6S6 161.7W5
   MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT
   RADIUS OF 035 KT WINDS - 050 NM NORTHEAST SEMICIRCLE
                            070 NM ELSEWHERE
    ---
REMARKS:
TROPICAL CYCLONE 27P (HALI) HAS INTENSIFIED OVER THE PAST
12 HOURS. CURRENT FORECAST HAS SYSTEM MOVING ON A MORE WESTERLY
TRACK THAN PREVIOUSLY FORECAST. LATEST FORECAST GUIDANCE
INDICATES THE WESTERN PORTION OF THE SUBTROPICAL RIDGE WILL
BUILD, STEERING THIS SYSTEM TO THE WEST-NORTHWEST.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 130000Z IS 14 FEET.
NEXT WARNINGS AT 131500Z0 AND 140300Z8.//
=========================================================================
WHPS31 PHNC 990313 15:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 003
   01 ACTIVE TROPICAL CYCLONE IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   131200Z7 --- NEAR 20.3S5 161.2W0
     MOVEMENT PAST SIX HOURS - 260 DEGREES AT 06 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 150 NM
   REPEAT POSIT: 20.3S5 161.2W0
    ---
   FORECASTS:
   12 HRS, VALID AT:
   140000Z5 --- 20.6S8 162.4W3
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 120 NM
   VECTOR TO 24 HR POSIT: 250 DEG/ 05 KTS
    ---
   24 HRS, VALID AT:
   141200Z8 --- 20.9S1 163.4W4
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 120 NM
   VECTOR TO 36 HR POSIT: 250 DEG/ 05 KTS
    ---
   36 HRS, VALID AT:
   150000Z6 --- 21.2S5 164.5W6
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 100 NM
   VECTOR TO 48 HR POSIT: 245 DEG/ 05 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   151200Z9 --- 21.6S9 165.5W7
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
    ---
REMARKS:
LATEST IR IMAGERY INDICATES CONVECTION ASSOCIATED WITH HALI IS
CURRENTLY WEAKENING. THE LATEST SCAT PASS SHOWS 39 KNOTS NEAR THE
CENTER. EXPECT HALE TO CONTINUE ON A WESTWARD TRACK DUE TO UPPER
LEVEL RIDGING TO THE SOUTH. MAXIMUM SIGNIFICANT WAVE HEIGHT AT
131200Z IS 14 FEET. NEXT WARNINGS AT 140300Z8 AND 141500Z1.//
=========================================================================
WHPS31 PHNC 990314 03:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 004
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   140000Z5 --- NEAR 20.4S6 162.4W3
     MOVEMENT PAST SIX HOURS - 260 DEGREES AT 07 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
   RADIUS OF 035 KT WINDS - 160 NM
   REPEAT POSIT: 20.4S6 162.4W3
    ---
   FORECASTS:
   12 HRS, VALID AT:
   141200Z8 --- 20.5S7 163.8W8
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 150 NM
   VECTOR TO 24 HR POSIT: 260 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   150000Z6 --- 20.7S9 165.2W4
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 150 NM
   VECTOR TO 36 HR POSIT: 255 DEG/ 05 KTS
    ---
   36 HRS, VALID AT:
   151200Z9 --- 21.0S3 166.3W6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 48 HR POSIT: 230 DEG/ 05 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   160000Z7 --- 21.7S0 167.2W6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
    ---
REMARKS:
LATEST SSMI, INFRARED, AND VISUAL SATELLITE IMAGERY INDICATES THE
CYCLONE HAS INTENSIFIED SLIGHTLY OVER THE PAST 12 HRS. EXPECT THE
SYSTEM TO SLOWLY WEAKEN OVER THE NEXT 48 HRS DUE TO INCREASED
VERTICAL WINDSHEAR. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 140000Z IS
15 FEET. NEXT WARNINGS AT 141500Z1 AND 150300Z9.//
=========================================================================
WHPS31 PHNC 990314 15:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 005
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   141200Z8 --- NEAR 20.4S6 161.9W7
     MOVEMENT PAST SIX HOURS - 105 DEGREES AT 09 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 150 NM
   REPEAT POSIT: 20.4S6 161.9W7
    ---
   FORECASTS:
   12 HRS, VALID AT:
   150000Z6 --- 21.1S4 162.0W9
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 150 NM
   VECTOR TO 24 HR POSIT: 155 DEG/ 07 KTS
    ---
   24 HRS, VALID AT:
   151200Z9 --- 22.4S8 161.4W2
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 150 NM
   VECTOR TO 36 HR POSIT: 150 DEG/ 08 KTS
    ---
   36 HRS, VALID AT:
   160000Z7 --- 23.8S3 160.5W2
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 150 NM
   VECTOR TO 48 HR POSIT: 125 DEG/ 08 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   161200Z0 --- 24.8S4 159.0W5
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   BECOMING EXTRATROPICAL
    ---
REMARKS: LATEST METSAT ANIMATION INDICATES SYSTEM HAS WEAKENED
OVER PAST 6 HOURS DUE TO INCREASED SHEAR, AND HAS BEGUN TO
RECURVE TO THE SOUTHEAST AS AN UPPER LEVEL TROUGH TO SOUTH
CREATES A WEAKNESS IN THE RIDGE. MAXIMUM SIGNIFICANT WAVE
HEIGHT AT 141200Z IS 18 FEET. NEXT WARNINGS AT 150300Z9 AND
151500Z2.//
=========================================================================
WHPS31 PHNC 990315 03:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 006
   01 ACTIVE TROPICAL CYCLONE IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   150000Z6 --- NEAR 20.3S5 163.8W8
     MOVEMENT PAST SIX HOURS - 295 DEGREES AT 05 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 060 NM
   REPEAT POSIT: 20.3S5 163.8W8
    ---
   FORECASTS:
   12 HRS, VALID AT:
   151200Z9 --- 20.3S5 164.9W0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 060 NM
   VECTOR TO 24 HR POSIT: 240 DEG/ 05 KTS
    ---
   24 HRS, VALID AT:
   160000Z7 --- 20.8S0 165.8W0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 060 NM
   VECTOR TO 36 HR POSIT: 220 DEG/ 05 KTS
    ---
   36 HRS, VALID AT:
   161200Z0 --- 21.6S9 166.5W8
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   VECTOR TO 48 HR POSIT: 215 DEG/ 06 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   170000Z8 --- 22.5S9 167.2W6
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
    ---
REMARKS:
LATEST METSAT DATA INDICATES INCREASED CONVECTION AT CENTER
OF SYSTEM AND A WESTWARD MOVEMENT OVER THE PAST 6 HRS. SYSTEM
REMAINS IN AN AREA BETWEEN TWO UPPER LEVEL RIDGES WHICH WILL
AID IN ITS SLOW MOVEMENT WEST UNTIL A WEAKENESS IN THE RIDGE
ALLOWS FOR A MORE SOUTHWEST MOVEMENT FOR THE 48 HR FORECAST.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 150000Z IS 16 FEET.
NEXT WARNINGS AT 151500Z2 AND 160300Z0.//
=========================================================================
WHPS31 PHNC 990315 15:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 007
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   151200Z9 --- NEAR 20.2S4 164.5W6
     MOVEMENT PAST SIX HOURS - 270 DEGREES AT 04 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   REPEAT POSIT: 20.2S4 164.5W6
    ---
   FORECASTS:
   12 HRS, VALID AT:
   160000Z7 --- 20.4S6 165.4W6
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 060 NM
   VECTOR TO 24 HR POSIT: 240 DEG/ 04 KTS
    ---
   24 HRS, VALID AT:
   161200Z0 --- 20.8S0 166.2W5
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 35 KT WINDS - 060 NM
   VECTOR TO 36 HR POSIT: 225 DEG/ 06 KTS
    ---
   36 HRS, VALID AT:
   170000Z8 --- 21.6S9 167.1W5
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 060 NM
   VECTOR TO 48 HR POSIT: 215 DEG/ 07 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   171200Z1 --- 22.7S1 167.9W3
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   BECOMING EXTRATROPICAL
    ---
REMARKS: LATEST METSAT IMAGERY OVER PAST 8 HOURS HAS SHOWN
INCREASED DEEP CONVECTION AND A SLOW MOVEMENT TO THE WEST.
SYSTEM REMAINS OVER WATERS WITH SUBSTAINING SST OVER 81
DEGREES FARENHEIT. SYSTEM CONTINUES TO BE STEERED BY THE
RIDGE TO THE SOUTH AND IS FORECAST TO MOVE ON A MORE
SOUTHWESTWARD TRACK BY 24 HRS TOWARD A WEAKNESS IN THE
RIDGE. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 151200Z IS 17
FEET. NEXT WARNINGS AT 160300Z0 AND 161500Z3.//
=========================================================================
WHPS31 PHNC 990316 03:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 008
   01 ACTIVE TROPICAL CYCLONE IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   160000Z7 --- NEAR 22.1S5 164.3W4
     MOVEMENT PAST SIX HOURS - 180 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 045 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   RADIUS OF 035 KT WINDS - 040 NM
   REPEAT POSIT: 22.1S5 164.3W4
    ---
   FORECASTS:
   12 HRS, VALID AT:
   161200Z0 --- 23.6S1 163.9W9
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 040 NM
   VECTOR TO 24 HR POSIT: 135 DEG/ 08 KTS
    ---
   24 HRS, VALID AT:
   170000Z8 --- 24.7S3 162.7W6
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 36 HR POSIT: 115 DEG/ 11 KTS
    ---
   36 HRS, VALID AT:
   171200Z1 --- 25.6S3 160.5W2
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 48 HR POSIT: 115 DEG/ 11 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   180000Z9 --- 26.4S2 158.3W7
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
    ---
REMARKS:
LATEST METSAT IMAGERY INDICATES CENTRAL CONVECTION OF THIS
SYSTEM HAS INCREASED DIURNALLY. A MORE SOUTHWARD MOVEMENT
IS EXPECTED AS THIS SYSTEM MOVES ALONG THE BACK SIDE OF AN
UPPER LEVEL RIDGE AND IS INFLUENCED BY A TROUGH SOUTH OF THE
SYSTEM TO ALLOW A SOUTHEAST MOVEMENT BY 24 HRS. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 160000Z IS 16 FEET.
NEXT WARNINGS AT 161500Z3 AND 170300Z1.//
=========================================================================
WHPS31 PHNC 990316 15:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 009
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   161200Z0 --- NEAR 24.8S4 162.5W4
     MOVEMENT PAST SIX HOURS - 150 DEGREES AT 15 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
   RADIUS OF 035 KT WINDS - 040 NM
   REPEAT POSIT: 24.8S4 162.5W4
    ---
   FORECASTS:
   12 HRS, VALID AT:
   170000Z8 --- 26.2S0 161.2W0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 040 NM
   VECTOR TO 24 HR POSIT: 140 DEG/ 11 KTS
    ---
   24 HRS, VALID AT:
   171200Z1 --- 27.9S8 159.5W0
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   VECTOR TO 36 HR POSIT: 130 DEG/ 11 KTS
    ---
   36 HRS, VALID AT:
   180000Z9 --- 29.2S3 157.6W9
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   VECTOR TO 48 HR POSIT: 120 DEG/ 16 KTS
   BECOMING EXTRATROPICAL
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   181200Z2 --- 30.8S1 154.5W5
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   BECOMING EXTRATROPICAL
    ---
REMARKS: LATEST METSAT ANIMATION INDICATES DECREASED
CONVECTIVE ACTIVITY OVER THE PAST 8 HRS. OUTFLOW
REMAINS FAIR IN ALL QUADS EXCEPT THE SOUTHWEST. WITH
SYSTEM BECOMING MORE DISORGINIZED AND OBLONGED. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 161200Z IS 18 FEET. NEXT
WARNINGS AT 170300Z1 AND 171500Z4. DTG HAS BEEN CORRECTED
TO COINCIDE WITH NUMBERING SYSTEM FOR NEXT TROPICAL
CYCLONES.//
=========================================================================
WHPS31 PHNC 990317 03:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 010
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   170000Z8 --- NEAR 23.5S0 162.2W1
     MOVEMENT PAST SIX HOURS - 115 DEGREES AT 07 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
   RADIUS OF 035 KT WINDS - 045 NM NORTHEAST SEMICIRCLE
                            035 NM ELSEWHERE
   REPEAT POSIT: 23.5S0 162.2W1
    ---
   FORECASTS:
   12 HRS, VALID AT:
   171200Z1 --- 24.9S5 161.4W2
   MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
   RADIUS OF 035 KT WINDS - 040 NM NORTHEAST SEMICIRCLE
                            030 NM ELSEWHERE
   VECTOR TO 24 HR POSIT: 135 DEG/ 10 KTS
    ---
   24 HRS, VALID AT:
   180000Z9 --- 26.3S1 159.9W4
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   VECTOR TO 36 HR POSIT: 120 DEG/ 11 KTS
    ---
   36 HRS, VALID AT:
   181200Z2 --- 27.5S4 157.7W0
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 48 HR POSIT: 130 DEG/ 14 KTS
    ---
   EXTENDED OUTLOOK:
   48 HRS, VALID AT:
   190000Z0 --- 29.3S4 155.2W3
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
    ---
REMARKS:
TROPICAL CYCLONE 27P (HALI) CONTINUES TO TRACK SOUTHEAST DUE TO
THE UPPER LEVEL STEERING ASSOCIATED WITH THE SUB-TROPICAL RIDGE
TO THE EAST COMBINED WITH A TROUGH TO THE SOUTHWEST. LATEST
METSAT ANIMATION INDICATES CONVECTION HAS DECREASED SLIGHTLY IN
INTENSITY OVER THE PAST 6 HOURS ALTHOUGH SYSTEM STILL SHOWS
STRONG CENTRALIZED CONVECTION. WE EXPECT INCREASING UPPER LEVEL
SHEAR TO INHIBIT ANY REGENERATION OF CONVECTION WHICH WILL CAUSE
SYSTEM DISSIPATION BY THE 24 HOUR TIME FRAME. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 170000Z IS 15 FEET. NEXT WARNINGS AT 171500Z4 AND
180300Z2.//
=========================================================================
WHPS31 PHNC 990317 15:00z
1. TROPICAL CYCLONE 27P (HALI) WARNING NR 011
   01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
    ---
   WARNING POSITION:
   171200Z1 --- NEAR 24.2S8 164.2W3
     MOVEMENT PAST SIX HOURS - 270 DEGREES AT 02 KTS
     POSITION ACCURATE TO WITHIN 060 NM
     POSITION BASED ON CENTER LOCATED BY SATELLITE
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   REPEAT POSIT: 24.2S8 164.2W3
   FORECASTS:
   12 HRS, VALID AT:
   180000Z9 --- 24.4S0 164.6W7
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 24 HR POSIT: 270 DEG/ 02 KTS
   24 HRS, VALID AT:
   181200Z2 --- 24.4S0 165.0W2
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
   VECTOR TO 36 HR POSIT: 285 DEG/ 02 KTS
REMARKS: LATEST IR IMAGERY OVER PAST 8 HOURS HAS SHOWN DECREASING
CONVECTIVE ACTITY WITH THIS SYSTEM. LOW LEVEL CIRCULATION HAS
REMAINED EXPOSED TO THE WEST OVER THE PAST 6 HOURS. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 171200Z IS 10 FEET. THIS IS THE FINAL
WARNING ON THIS SYSTEM BY THE NAVAL PACIFIC METEOROLOGY AND
OCEANOGRAPHY CENTER (NAVPACMETOCCEN). THE SYSTEM WILL BE CLOSELY
MONITORED FOR SIGNS OF REGENERATION.//

Tropical cyclone tracks developed by Michael Bath using operational warnings and advisories.


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Document: tropical_cyclone_hali_jtwc_advisories.htm Updated: 28 May 2013