Overall Green alert Tropical Cyclone for FOUR-17
in India

Global Telecommunication Service

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Original Message :

WTIO51 PGTW 090900
WARNING ATCG MIL 04B NIO 171209070705
2017120906 04B FOUR 003 01 020 06 SATL 060
T000 188N 0868E 035 R034 030 NE QD 030 SE QD 045 SW QD 050 NW QD
T012 200N 0874E 030
T024 213N 0885E 025
AMP 000HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
012HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 003
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 003
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
090600Z --- NEAR 18.8N 86.8E
MOVEMENT PAST SIX HOURS - 020 DEGREES AT 06 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
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
045 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.8N 86.8E
---
FORECASTS:
12 HRS, VALID AT:
091800Z --- 20.0N 87.4E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
VECTOR TO 24 HR POSIT: 040 DEG/ 08 KTS
---
24 HRS, VALID AT:
100600Z --- 21.3N 88.5E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
---
REMARKS:
090900Z POSITION NEAR 19.1N 86.9E.
TROPICAL CYCLONE (TC) 04B (FOUR), LOCATED APPROXIMATELY 245 NM SOUTH-
SOUTHWEST OF KOLKATA, INDIA, HAS TRACKED NORTH-NORTHEASTWARD AT
06 KNOTS OVER THE PAST SIX HOURS.
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 090600Z
IS 11 FEET.//
0417120518 75N 897E 25
0417120600 86N 896E 25
0417120606 93N 892E 25
0417120612 101N 890E 25
0417120618 108N 885E 30
0417120700 115N 883E 30
0417120706 122N 881E 30
0417120712 130N 879E 30
0417120718 138N 876E 30
0417120800 145N 871E 30
0417120806 157N 868E 30
0417120812 168N 867E 30
0417120818 175N 866E 40
0417120900 182N 866E 40
0417120906 188N 868E 35


Original Message :

WTIO51 PGTW 090300 RRA
WARNING ATCG MIL 04B NIO 171209011517
2017120900 04B FOUR 002 01 015 12 SATL 060
T000 193N 0869E 040 R034 025 NE QD 025 SE QD 025 SW QD 040 NW QD
T012 208N 0875E 035 R034 000 NE QD 000 SE QD 020 SW QD 020 NW QD
T024 223N 0885E 020
AMP
012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
090000Z --- NEAR 19.3N 86.9E
MOVEMENT PAST SIX HOURS - 015 DEGREES AT 12 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 19.3N 86.9E
---
FORECASTS:
12 HRS, VALID AT:
091200Z --- 20.8N 87.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 030 DEG/ 09 KTS


Original Message :

WTIO51 PGTW 090300
WARNING ATCG MIL 04B NIO 171209011517
2017120900 04B FOUR 002 01 015 12 SATL 060
T000 193N 0869E 040 R034 025 NE QD 025 SE QD 025 SW QD 040 NW QD
T012 208N 0875E 035 R034 000 NE QD 000 SE QD 020 SW QD 020 NW QD
T024 223N 0885E 020
AMP
012HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
024HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
090000Z --- NEAR 19.3N 86.9E
MOVEMENT PAST SIX HOURS - 015 DEGREES AT 12 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 19.3N 86.9E
---
FORECASTS:
12 HRS, VALID AT:
091200Z --- 20.8N 87.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 030 DEG/ 09 KTS
---
24 HRS, VALID AT:
100000Z --- 22.3N 88.5E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
090300Z POSITION NEAR 19.7N 87.0E.
TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 215 NM SOUTH-
SOUTHWEST OF CALCUTTA, INDIA, HAS TRACKED NORTH-NORTHEASTWARD AT
12 KNOTS OVER THE PAST SIX HOURS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090000Z IS 13 FEET. NEXT
WARNINGS AT 090900Z, 091500Z AND 092100Z.//
0417120506 63N 905E 25
0417120512 67N 902E 25
0417120518 75N 897E 25
0417120600 86N 896E 25
0417120606 93N 892E 25
0417120612 101N 890E 25
0417120618 108N 885E 30
0417120700 115N 883E 30
0417120706 122N 881E 30
0417120712 130N 879E 30
0417120718 138N 876E 30
0417120800 145N 871E 30
0417120806 157N 868E 30
0417120812 168N 867E 30
0417120818 181N 866E 40
0417120900 193N 869E 40


Original Message :

WTIO31 PGTW 090300 RRA
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 04B (FOUR) WARNING NR 002//
RMKS/
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN NORTH IO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
090000Z --- NEAR 19.3N 86.9E
MOVEMENT PAST SIX HOURS - 015 DEGREES AT 12 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 19.3N 86.9E
---
FORECASTS:
12 HRS, VALID AT:
091200Z --- 20.8N 87.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 030 DEG/ 09 KTS
---
24 HRS, VALID AT:
100000Z --- 22.3N 88.5E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
090300Z POSITION NEAR 19.7N 87.0E.
TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 215 NM SOUTH-


Original Message :

WTIO31 PGTW 090300
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 04B (FOUR) WARNING NR 002//
RMKS/
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 002
01 ACTIVE TROPICAL CYCLONE IN NORTH IO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
090000Z --- NEAR 19.3N 86.9E
MOVEMENT PAST SIX HOURS - 015 DEGREES AT 12 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 025 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
REPEAT POSIT: 19.3N 86.9E
---
FORECASTS:
12 HRS, VALID AT:
091200Z --- 20.8N 87.5E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 000 NM NORTHEAST QUADRANT
000 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 030 DEG/ 09 KTS
---
24 HRS, VALID AT:
100000Z --- 22.3N 88.5E
MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
090300Z POSITION NEAR 19.7N 87.0E.
TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 215 NM SOUTH-
SOUTHWEST OF KOLKATA, INDIA, HAS TRACKED NORTH-NORTHEASTWARD AT
12 KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED
SATELLITE IMAGERY DEPICTS FLARING CONVECTION WHICH IS BEING SHEARED
TO THE NORTH OF THE LOW LEVEL CIRCULATION CENTER (LLCC) ASSOCIATED
WITH TC 04B. THE INITIAL INTENSITY OF 40 KNOTS IS BASED ON A 081514Z
METOP-A ASCAT IMAGE SHOWING AN AREA OF 40 KNOT WINDS IN THE WESTERN
SEMICIRCLE OF TC 04B. ENVIRONMENTAL ANALYSIS SHOWS UNFAVORABLE
VERTICAL WIND SHEAR VALUES (20 TO 25 KNOTS). POLEWARD OUTFLOW IS
MODERATE AND EQUATORWARD OUTFLOW IS POOR. SEA SURFACE TEMPERATURES
ARE UNFAVORABLE (25 TO 26 DEGREES CELSIUS). TC 04B IS UNDER THE
STEERING INFLUENCE OF A SUBTROPICAL RIDGE (STR) LOCATED TO THE EAST.
THE STR WILL STEER TC 04B NORTHEASTWARD FOR THE REMAINDER OF THE
FORECAST. AS A RESULT OF UNFAVORABLE ENVIRONMENTAL CONDITIONS TC 04B
WILL WEAKEN IN INTENSITY TO 35 KNOTS BY TAU 12 BEFORE DISSIPATING
OVER LAND BY TAU 24. DYNAMIC MODEL GUIDANCE IS IN GOOD AGREEMENT
RESULTING IN HIGH CONFIDENCE IN THE JTWC TRACK FORECAST. MAXIMUM
SIGNIFICANT WAVE HEIGHT AT 090000Z IS 13 FEET. NEXT WARNINGS AT
090900Z, 091500Z AND 092100Z.//


Original Message :

WTIO51 PGTW 082100 RRA
WARNING ATCG MIL 04B NIO 171208194645
2017120818 04B FOUR 001 01 005 15 SATL 060
T000 183N 0868E 040 R034 020 NE QD 020 SE QD 050 SW QD 065 NW QD
T012 198N 0871E 040 R034 015 NE QD 015 SE QD 025 SW QD 040 NW QD
T024 212N 0877E 035 R034 010 NE QD 010 SE QD 015 SW QD 020 NW QD
T036 226N 0889E 030
AMP
024HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
036HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
081800Z --- NEAR 18.3N 86.8E
MOVEMENT PAST SIX HOURS - 005 DEGREES AT 15 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.3N 86.8E
---
FORECASTS:
12 HRS, VALID AT:
090600Z --- 19.8N 87.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT


Original Message :

WTIO51 PGTW 082100
WARNING ATCG MIL 04B NIO 171208194645
2017120818 04B FOUR 001 01 005 15 SATL 060
T000 183N 0868E 040 R034 020 NE QD 020 SE QD 050 SW QD 065 NW QD
T012 198N 0871E 040 R034 015 NE QD 015 SE QD 025 SW QD 040 NW QD
T024 212N 0877E 035 R034 010 NE QD 010 SE QD 015 SW QD 020 NW QD
T036 226N 0889E 030
AMP
024HR DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
036HR DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
SUBJ: TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
081800Z --- NEAR 18.3N 86.8E
MOVEMENT PAST SIX HOURS - 005 DEGREES AT 15 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.3N 86.8E
---
FORECASTS:
12 HRS, VALID AT:
090600Z --- 19.8N 87.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 020 DEG/ 08 KTS
---
24 HRS, VALID AT:
091800Z --- 21.2N 87.7E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 010 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
015 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 040 DEG/ 09 KTS
---
36 HRS, VALID AT:
100600Z --- 22.6N 88.9E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
082100Z POSITION NEAR 18.7N 86.9E.
TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 370 NM
SOUTHWEST OF CHITTAGONG, HAS TRACKED NORTHWARD AT 15 KNOTS OVER
THE PAST SIX HOURS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 081800Z IS 15 FEET. NEXT
WARNINGS AT 090300Z, 090900Z, 091500Z AND 092100Z.//
0417120506 63N 905E 25
0417120512 67N 902E 25
0417120518 75N 897E 25
0417120600 86N 896E 25
0417120606 93N 892E 25
0417120612 101N 890E 25
0417120618 108N 885E 30
0417120700 115N 883E 30
0417120706 122N 881E 30
0417120712 130N 879E 30
0417120718 138N 876E 30
0417120800 145N 871E 30
0417120806 156N 868E 30
0417120812 168N 867E 30
0417120818 183N 868E 40


Original Message :

WTIO31 PGTW 082100 RRA
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 04B (FOUR) WARNING NR 001//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/080136ZDEC17//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTH IO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
081800Z --- NEAR 18.3N 86.8E
MOVEMENT PAST SIX HOURS - 005 DEGREES AT 15 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.3N 86.8E
---
FORECASTS:
12 HRS, VALID AT:
090600Z --- 19.8N 87.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 020 DEG/ 08 KTS
---
24 HRS, VALID AT:
091800Z --- 21.2N 87.7E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 010 NM NORTHEAST QUADRANT


Original Message :

WTIO31 PGTW 082100
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 04B (FOUR) WARNING NR 001//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/080136ZDEC17//
AMPN/REF A IS A TROPICAL CYCLONE FORMATION ALERT.//
RMKS/
1. TROPICAL CYCLONE 04B (FOUR) WARNING NR 001
01 ACTIVE TROPICAL CYCLONE IN NORTH IO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
081800Z --- NEAR 18.3N 86.8E
MOVEMENT PAST SIX HOURS - 005 DEGREES AT 15 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
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
REPEAT POSIT: 18.3N 86.8E
---
FORECASTS:
12 HRS, VALID AT:
090600Z --- 19.8N 87.1E
MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 034 KT WINDS - 015 NM NORTHEAST QUADRANT
015 NM SOUTHEAST QUADRANT
025 NM SOUTHWEST QUADRANT
040 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 020 DEG/ 08 KTS
---
24 HRS, VALID AT:
091800Z --- 21.2N 87.7E
MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER
RADIUS OF 034 KT WINDS - 010 NM NORTHEAST QUADRANT
010 NM SOUTHEAST QUADRANT
015 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 040 DEG/ 09 KTS
---
36 HRS, VALID AT:
100600Z --- 22.6N 88.9E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
082100Z POSITION NEAR 18.7N 86.9E.
TROPICAL CYCLONE 04B (FOUR), LOCATED APPROXIMATELY 370 NM
SOUTHWEST OF CHITTAGONG, BANGLADESH, HAS TRACKED NORTHWARD AT 15
KNOTS OVER THE PAST SIX HOURS. ANIMATED ENHANCED INFRARED SATELLITE
IMAGERY DEPICTS FLARING CONVECTION TO THE NORTH OF THE LOW LEVEL
CIRCULATION CENTER (LLCC) ASSOCIATED WITH TC 04B. THE INITIAL
INTENSITY OF 40 KNOTS IS BASED ON A 081514Z ASCAT IMAGE SHOWING AN
AREA OF 40 KNOT WINDS IN THE WESTERN SEMICIRCLE OF TC 04B.
ENVIRONMENTAL ANALYSIS SHOWS FAVORABLE VERTICAL WIND SHEAR VALUES (10
TO 15 KNOTS) TO THE SOUTH OF TC 04B. HOWEVER, AS TC 04B TRACKS
NORTH-NORTHEASTWARD IT WILL ENCOUNTER UNFAVORABLE VERTICAL WIND SHEAR
VALUES (25 TO 30 KNOTS). POLEWARD OUTFLOW IS MODERATE AND EQUATORWARD
OUTFLOW IS POOR. SEA SURFACE TEMPERATURES ARE UNFAVORABLE (25 TO 26
DEGREES CELSIUS). TC 04B IS UNDER THE STEERING INFLUENCE OF A
SUBTROPICAL RIDGE (STR) LOCATED TO THE EAST. THE STR WILL STEER TC
04B NORTH-NORTHEASTWARD THROUGH TAU 36. AS A RESULT OF UNFAVORABLE
ENVIRONMENTAL CONDITIONS TC 04B WILL WEAKEN IN INTENSITY TO 35 KNOTS
BY TAU 24 BEFORE DISSIPATING OVER LAND BY TAU 36. DYNAMIC MODEL
GUIDANCE IS IN GOOD AGREEMENT RESULTING IN HIGH CONFIDENCE IN THE
JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 081800Z IS 15
FEET. NEXT WARNINGS AT 090300Z, 090900Z, 091500Z AND 092100Z. THIS
CANCELS AND SUPERSEDES REF A (WTIO21 PGTW 080030 COR).//