Tropical Cyclones
[Index] | Tropical Cyclone MONA : JTWC Advisories |
Season 1999-2000 Summaries (Operational Data): [AU] [SIO] [SPAC] [SH] | |
---> Tropical Cyclone MONA Track Map and Data |
WTPS 22 PHNC 20000308 00:00z RMKS/1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 100 NM EITHER SIDE OF A LINE FROM 19.1S1 174.5W7 TO 22.4S8 176.9W3 WITHIN THE NEXT 00 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 30 TO 35 KNOTS. METSAT IMAGERY AT 072030Z2 INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 19.2S2 174.5W7. THE SYSTEM IS MOVING SOUTHWESTWARD AT 10 KNOTS. THE NEXT SATELLITE INVESTIGATION IS SCHEDULED FOR 081800Z7. 2. REMARKS: LATEST MICROWAVE IMAGERY 072030Z INDICATES A WELL DEFINED LOW LEVEL CIRCULATION AND OUTFLOW IS GOOD. SYSTEM WILL CONTINUE TO BE MONITORED FOR FURTHER DEVELOPMENT. 3. THIS ALERT VALID UNTIL 090000Z9.// ========================================================================= WTPS 32 PHNC 20000308 03:00z 1. TROPICAL CYCLONE 19P WARNING NR 001 04 ACTIVE TROPICAL CYCLONES IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 080000Z8 --- NEAR 19.5S5 175.2W5 MOVEMENT PAST SIX HOURS - 230 DEGREES AT 14 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 RADIUS OF 035 KT WINDS - 065 NM SOUTHEAST SEMICIRCLE 055 NM NORTHWEST SEMICIRCLE REPEAT POSIT: 19.5S5 175.2W5 --- FORECASTS: 12 HRS, VALID AT: 081200Z1 --- 20.9S1 176.0W4 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT RADIUS OF 035 KT WINDS - 075 NM SOUTHEAST SEMICIRCLE 060 NM NORTHWEST SEMICIRCLE VECTOR TO 24 HR POSIT: 175 DEG/ 09 KTS --- 24 HRS, VALID AT: 090000Z9 --- 22.6S0 175.8W1 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 085 NM SOUTHEAST SEMICIRCLE 070 NM NORTHWEST SEMICIRCLE VECTOR TO 36 HR POSIT: 170 DEG/ 09 KTS --- 36 HRS, VALID AT: 091200Z2 --- 24.3S9 175.5W8 MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 050 KT WINDS - 015 NM RADIUS OF 035 KT WINDS - 090 NM SOUTHEAST SEMICIRCLE 075 NM NORTHWEST SEMICIRCLE VECTOR TO 48 HR POSIT: 160 DEG/ 13 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 100000Z1 --- 26.7S5 174.6W8 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT BECOMING EXTRATROPICAL RADIUS OF 035 KT WINDS - 085 NM SOUTHEAST SEMICIRCLE 070 NM NORTHWEST SEMICIRCLE --- REMARKS: TROPICAL CYCLONE (TC) 19P HAS TRACKED SOUTHWESTWARD OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 072330Z5 VISIBLE AND INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 35 KNOTS. SATELLITE ANIMATION CONTINUES TO SHOW IMPROVED LOW-LEVEL ORGANIZATION WITH OUTFLOW REMAINING GOOD IN ALL QUADRANTS. MODELS REMAIN IN GOOD AGREEMENT THROUGH THE 36 HOUR FORECAST PERIOD. TC 19P IS FORECAST TO TRACK SOUTHWARD UNDER THE STEERING INFLUENCE OF THE SUBTROPICAL RIDGE TO THE EAST. TC 19P IS FORECAST TO INTENSIFY CLIMATOLOGICALLY OVER THE 36 HOUR FORECAST PERIOD. AFTER THAT, INCREASING VERTICAL SHEAR WILL SERVE TO BEGIN WEAKENING THE SYSTEM. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 080000Z IS 10 FEET. THIS WARNING SUPERSEDES AND CANCELS NAVPACMETOCCEN 072351Z MAR 00 TROPICAL CYCLONE FORMATION ALERT (WTPS22 PHNC 080000). REFER TO TROPICAL CYCLONE 16S (NORMAN) WARNINGS (WTXS32 PGTW) FOR TWELVE- HOURLY UPDATES. REFER TO TROPICAL CYCLONE 14P (STEVE) WARNINGS (WTXS35 PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL CYCLONE 18P (LEO) WARNINGS (WTPS31 PHNC) FOR TWELVE-HOURLY UPDATES. NEXT WARNINGS AT 081500Z4 AND 090300Z2.// ========================================================================= WTPS32 PHNC 20000308 15:00z 1. TROPICAL CYCLONE 19P WARNING NR 002 04 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 081200Z1 --- NEAR 19.8S8 175.2W5 MOVEMENT PAST SIX HOURS - 225 DEGREES AT 03 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 REPEAT POSIT: 19.8S8 175.2W5 --- FORECASTS: 12 HRS, VALID AT: 090000Z9 --- 20.1S3 175.4W7 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT VECTOR TO 24 HR POSIT: 195 DEG/ 04 KTS --- 24 HRS, VALID AT: 091200Z2 --- 20.9S1 175.6W9 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT VECTOR TO 36 HR POSIT: 190 DEG/ 05 KTS --- 36 HRS, VALID AT: 100000Z1 --- 21.9S2 175.8W1 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT RADIUS OF 035 KT WINDS - 090 NM SOUTHEAST SEMICIRCLE 075 NM NORTHWEST SEMICIRCLE VECTOR TO 48 HR POSIT: 180 DEG/ 07 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 101200Z4 --- 23.3S8 175.9W2 MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT RADIUS OF 035 KT WINDS - 085 NM SOUTHEAST SEMICIRCLE 070 NM NORTHWEST SEMICIRCLE --- REMARKS: TROPICAL CYCLONE (TC) 19P (MONA), LOCATED APPROXIMATELY 425 NM TO THE EAST-SOUTHEAST OF FIJI, HAS TRACKED SOUTHWESTWARD AT 3 KNOTS DURING THE LAST 6 HOURS. THE WARNING POSTION IS BASED ON 080530Z INFRARED SATELLITE IMAGERY AND SYNOPTIC DATA. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 25 KNOTS AND SYNOPTIC DATA OF 20 KNOTS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 081200Z IS 10 FEET. REFER TO WWPN30 PHNC FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 090300Z2 AND 091500Z5. ========================================================================= WTPS32 PHNC 20000308 21:00z 1. TROPICAL CYCLONE 19P(MONA) WARNING NR 003 03 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 081800Z7 --- NEAR 20.8S0 175.8W1 MOVEMENT PAST SIX HOURS - 210 DEGREES AT 07 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 060 NM SOUTHWEST SEMICIRCLE 045 NM NORTHEAST SEMICIRCLE RADIUS OF 035 KT WINDS - 100 NM SOUTHWEST SEMICIRCLE 075 NM NORTHEAST SEMICIRCLE REPEAT POSIT: 20.8S0 175.8W1 --- FORECASTS: 12 HRS, VALID AT: 090600Z5 --- 22.3S7 176.5W9 MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 080 NM SOUTH SEMICIRCLE 060 NM NORTH SEMICIRCLE RADIUS OF 035 KT WINDS - 120 NM SOUTH SEMICIRCLE 080 NM NORTH SEMICIRCLE VECTOR TO 24 HR POSIT: 185 DEG/ 10 KTS --- 24 HRS, VALID AT: 091800Z8 --- 24.3S9 176.7W1 MAX SUSTAINED WINDS - 060 KT, GUSTS 075 KT RADIUS OF 050 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 100 NM SOUTHEAST SEMICIRCLE 075 NM NORTHWEST SEMICIRCLE VECTOR TO 36 HR POSIT: 185 DEG/ 12 KTS --- 36 HRS, VALID AT: 100600Z7 --- 26.6S4 177.0W5 MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 050 KT WINDS - 050 NM SOUTHEAST SEMICIRCLE 035 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 090 NM SOUTHEAST SEMICIRCLE 075 NM NORTHWEST SEMICIRCLE VECTOR TO 48 HR POSIT: 195 DEG/ 14 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 101800Z0 --- 29.3S4 177.8W3 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM NORTHWEST SEMICIRCLE --- REMARKS: TROPICAL CYCLONE 19P (MONA) HAS TRACKED SOUTH-SOUTHWESTWARD AT 07 KTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 081800Z7 INFRARED SATELLITE IMAGERY, SYNOPTIC DATA, AND RADAR DATA. SYSTEM HAS SHOWN RAPID INTENSIFICATION THUS INTENSITY HAS BEEN ADJUSTED TO 55 KTS. ANIMATED IMAGERY VERIFIES THESE ESTIMATES WITH STRONG OUTFLOW EVIDENT IN ALL QUADRANTS AND DEVELOPING CENTRAL DENSE OVERCAST (CDO). TC 19P IS FORECAST TO TRACK SOUTH-SOUTHWEST THEN TRACK MORE SOUTHWARD, DUE TO A WEAKENESS IN THE RIDGE TO ITS SOUTH. AS THE SYSTEM TRACKS SOUTHWARD, GRADUAL WEAKENING IS FORECAST DUE TO INCREASED SHEAR AND LOWERING SST=S. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 081800Z7 IS 26 FEET. 12 HOURLY FORECAST WARNING TIMES FOR TC19P (MONA) HAVE BEEN CHANGED IN VIEW OF THIS RAPID INTENSIFICATION. NEXT WARNINGS WILL NOW BE VALID AT 090900Z8 AND 092100Z2. REFER TO TROPICAL CYCLONE 14P (STEVE) WARNINGS (WTXS35 PGTW) FOR TWELVE-HOURLY UPDATES. REFER TO TROPICALVCYCLONE 16S (NORMAN) WARNING (WTXS32 PGTW) FOR TWELVE-HOURLY UPDATES. REFER TO TROPICAL CYCLONE 18P (LEO) WARNINGS (WTPS31 PHNC) FOR TWELVE-HOURLY UPDATES. ========================================================================= WTPS32 PHNC 20000309 09:00z 1. TROPICAL CYCLONE 19P (MONA) WARNING NR 004 01 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 090600Z5 --- NEAR 21.4S7 175.9W2 MOVEMENT PAST SIX HOURS - 180 DEGREES AT 07 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT RADIUS OF 050 KT WINDS - 060 NM SOUTH SEMICIRCLE 045 NM NORTH SEMICIRCLE RADIUS OF 035 KT WINDS - 100 NM SOUTH SEMICIRCLE 075 NM NORTH SEMICIRCLE REPEAT POSIT: 21.2S5 176.0W4 --- FORECASTS: 12 HRS, VALID AT: 091800Z8 --- 23.3S8 175.9W2 MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 045 NM SOUTHEAST SEMICIRCLE 030 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 080 NM SOUTHEAST SEMICIRCLE 060 NM NORTHWEST SEMICIRCLE VECTOR TO 24 HR POSIT: 160 DEG/ 13 KTS --- 24 HRS, VALID AT: 100600Z7 --- 25.7S4 174.9W1 MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 045 NM SOUTHEAST SEMICIRCLE 030 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 080 NM SOUTHEAST SEMICIRCLE 060 NM NORTHWEST SEMICIRCLE VECTOR TO 36 HR POSIT: 160 DEG/ 13 KTS --- 36 HRS, VALID AT: 101800Z0 --- 28.1S1 173.8W9 MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 035 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM NORTHWEST SEMICIRCLE VECTOR TO 48 HR POSIT: 160 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 110600Z8 --- 30.9S2 172.6W6 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM NORTHWEST SEMICIRCLE --- REMARKS: TROPICAL CYCLONE 19P (MONA) HAS TRACKED SOUTHWARD AT 07 KNOTS OVER THE PAST 06 HOURS. THE WARNING POSITION IS BASED UPON 090530Z7 INFRARED AND VISIBLE SATELLITE IMAGERY. ANIMATED SATELLITE IMAGERY SHOWS THAT TC 19P IS UNDER MODERATE NORTHWESTERLY VERTICAL WIND SHEAR. HOWEVER, AN IRREGULAR CLOUD-FILLED EYE IS ALSO EVIDENT. BASED ON A TROPICAL RAINFALL MEASURING MISSION PASS AT 090530Z7, THERE IS A NEAR CONCENTRIC EYEWALL WITH DEEP CONVECTION TO THE WEST. TC 19P IS EXPECTED TO TRACK SOUTH-SOUTHEASTWARD UNDER THE STEERING INFLUENCE OF A MID TO UPPER LEVEL RIDGE TO THE EAST. TC 19P SHOULD WEAKEN RAPIDLY AS IT ENCOUNTERS INCREASING VERTICAL WIND SHEAR DUE TO AN APPROACHING MID-LATITIUDE TROUGH. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090600Z5 IS 30 FEET. NEXT WARNINGS AT 092100Z2 AND 100900Z0.// ========================================================================= WTPS32 PHNC 20000309 21:00z 1. TROPICAL CYCLONE 19P (MONA) WARNING NR 005 02 ACTIVE TROPICAL CYCLONES IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 091800Z8 --- NEAR 22.6S0 175.4W7 MOVEMENT PAST SIX HOURS - 135 DEGREES AT 05 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 075 KT, GUSTS 090 KT RADIUS OF 050 KT WINDS - 060 NM EAST SEMICIRCLE 045 NM WEST SEMICIRCLE RADIUS OF 035 KT WINDS - 100 NM EAST SEMICIRCLE 075 NM WEST SEMICIRCLE REPEAT POSIT: 22.6S0 175.4W7 --- FORECASTS: 12 HRS, VALID AT: 100600Z7 --- 23.6S1 174.5W7 MAX SUSTAINED WINDS - 065 KT, GUSTS 080 KT RADIUS OF 050 KT WINDS - 040 NM EAST SEMICIRCLE 030 NM WEST SEMICIRCLE RADIUS OF 035 KT WINDS - 090 NM EAST SEMICIRCLE 060 NM WEST SEMICIRCLE VECTOR TO 24 HR POSIT: 145 DEG/ 10 KTS --- 24 HRS, VALID AT: 101800Z0 --- 25.2S9 173.3W4 MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 020 NM SOUTHEAST SEMICIRCLE 010 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 070 NM SOUTHEAST SEMICIRCLE 050 NM NORTHWEST SEMICIRCLE VECTOR TO 36 HR POSIT: 175 DEG/ 10 KTS --- 36 HRS, VALID AT: 110600Z8 --- 27.1S0 173.2W3 MAX SUSTAINED WINDS - 050 KT, GUSTS 065 KT RADIUS OF 035 KT WINDS - 060 NM SOUTHEAST SEMICIRCLE 045 NM NORTHWEST SEMICIRCLE VECTOR TO 48 HR POSIT: 180 DEG/ 11 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 111800Z1 --- 29.3S4 173.3W4 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT RADIUS OF 035 KT WINDS - 050 NM SOUTHEAST SEMICIRCLE 035 NM NORTHWEST SEMICIRCLE --- REMARKS: MAXIMUM SIGNIFICANT WAVE HEIGHT AT 091800Z8 IS 30 FEET. TROPICAL CYCLONE 19P (MONA)HAS TRACKED SOUTHEASTWARD AT 05 KTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 091800Z8 INFRARED AND VISIBLE SATELLITE IMAGERY. MOVEMENT OF TC 19P IS INFLUENCED BY A MID-UPPERL LEVEL TROUGH TO ITS SOUTH. SATELLITE IMAGERY AT 092022Z5 INDICATES RE-FORMATION OF AN EYE WITH WARMING CLOUD TOPS. STRONG OUTFLOW CONTINUES IN ALL QUADRANTS OF THE SYSTEM. NEXT WARNINGS AT 100900Z0 AND 102100Z4 REFER TO TROPICAL CYCLONE WARNING 14P (STEVE) WARNINGS (WTXS35 PGTW) FOR TWELVE HOURLY UPDATES.// ========================================================================= WTPS32 PHNC 20000310 09:00z 1. TROPICAL CYCLONE 19P (MONA) WARNING NR 006 02 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 100600Z7 --- NEAR 24.3S9 173.3W4 MOVEMENT PAST SIX HOURS - 125 DEGREES AT 18 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT RADIUS OF 050 KT WINDS - 070 NM SOUTHEAST SEMICIRCLE 055 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 110 NM SOUTHEAST SEMICIRCLE 095 NM NORTHWEST SEMICIRCLE REPEAT POSIT: 24.3S9 173.3W4 --- FORECASTS: 12 HRS, VALID AT: 101800Z0 --- 27.5S4 171.7W6 MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT RADIUS OF 050 KT WINDS - 050 NM SOUTHEAST SEMICIRCLE 035 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 090 NM SOUTHEAST SEMICIRCLE 075 NM NORTHWEST SEMICIRCLE VECTOR TO 24 HR POSIT: 155 DEG/ 20 KTS --- 24 HRS, VALID AT: 110600Z8 --- 31.1S5 169.8W4 MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT RADIUS OF 050 KT WINDS - 030 NM SOUTHEAST SEMICIRCLE 015 NM NORTHWEST SEMICIRCLE RADIUS OF 035 KT WINDS - 070 NM SOUTHEAST SEMICIRCLE 055 NM NORTHWEST SEMICIRCLE VECTOR TO 36 HR POSIT: 155 DEG/ 22 KTS --- 36 HRS, VALID AT: 111800Z1 --- 35.1S9 167.4W8 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT BECOMING EXTRATROPICAL RADIUS OF 035 KT WINDS - 050 NM SOUTHEAST SEMICIRCLE 035 NM NORTHWEST SEMICIRCLE VECTOR TO 48 HR POSIT: 140 DEG/ 24 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 120600Z9 --- 38.6S7 163.4W4 MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT BECOMING EXTRATROPICAL RADIUS OF 035 KT WINDS - 050 NM SOUTHEAST SEMICIRCLE 035 NM NORTHWEST SEMICIRCLE --- REMARKS: TROPICAL CYCLONE 19P (MONA) HAS TRACKED SOUTHEASTWARD AT 18 KTS DURING THE PAST SIX HOURS. THE WARNING POSITION IS BASED UPON 100530Z9 INFRARED AND VISIBLE SATELLITE IMAGERY. ANIMATED SATELLITE IMAGERY SHOWS A PARTIALLY CLOUD-FILLED EYE AND GOOD OUTFLOW IN ALL QUADRANTS. NORTHWESTERLY WIND SHEAR ASSOCIATED WITH A MID TO UPPER LEVEL TROUGH IS ALSO EVIDENT. TC 19P IS CONTINUES TO BE STEERED BY A MID TO UPPER LEVEL RIDGE TO THE EAST-NORTHEAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 100600Z7 IS 30 FEET. NEXT WARNINGS AT 102100Z4 AND 110900Z1.// ========================================================================= WTPS32 PHNC 20000310 21:00z 1. TROPICAL CYCLONE 19P (MONA) WARNING NR 007 02 ACTIVE TROPICAL CYCLONES IN SOUTHERN HEMISPHERE MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 101800Z0 --- NEAR 27.3S2 171.4W3 MOVEMENT PAST SIX HOURS - 165 DEGREES AT 18 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 BECOMING EXTRATROPICAL RADIUS OF 035 KT WINDS - 090 NM NORTHEAST SEMICIRCLE 075 NM SOUTHWEST SEMICIRCLE REPEAT POSIT: 27.3S2 171.4W3 --- FORECASTS: 12 HRS, VALID AT: 110600Z8 --- 30.7S0 171.6W5 MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT BECOMING EXTRATROPICAL RADIUS OF 035 KT WINDS - 080 NM NORTHEAST SEMICIRCLE 055 NM SOUTHWEST SEMICIRCLE VECTOR TO 24 HR POSIT: 165 DEG/ 21 KTS --- 24 HRS, VALID AT: 111800Z1 --- 34.8S5 170.4W2 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT BECOMING EXTRATROPICAL VECTOR TO 36 HR POSIT: 150 DEG/ 22 KTS --- 36 HRS, VALID AT: 120600Z9 --- 38.6S7 167.4W8 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT EXTRATROPICAL --- REMARKS: TROPICAL CYCLONE (TC) 19P (MONA) HAS TRACKED SOUTHWARD AT 18 KTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED UPON 101752Z6 INFRARED AND VISIBLE SATELLITE DATA. THE WARNING INTENSITY IS BASED UPON CURRENT SATELLITE INTENSITY ESTIMATES 45 KTS. ANIMATED SATELLITE IMAGERY CONTINUES TO SHOW THE SYSTEMRAPIDLY BECOMING AN EXTRA-TROPICAL LOW AS IT MOVES FURTHER INTO THE PREVAILING WESTERLIES AND THE CONVECTION BECOMES SHEARED FROM THE LOW-LEVEL CIRCULATION. TC 19P (MONA) IS FORECAST TO TRACK SOUTHWARD IN THE FIRST 24 HOURS THEN SOUTHEASTERLY AS ITS MERGES WITH AN APPROACHING FRONTAL BOUNDARY. THIS SYSTEM WILL CONTINUE TO WEAKEN UNDER AN INCREASING SHEAR ENVIRONMENT. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 101800Z IS 24 FEET. REFER TO TROPICAL CYCLONE 14P (STEVE) (WTXS35 PGTW) FOR THE FINAL WARNING. NEXT WARNINGS AT 110900 AND 112100.// ========================================================================= WTPS 32 PHNC 20000311 09:00z 1. TROPICAL CYCLONE 19P (MONA) WARNING NR 008 02 ACTIVE TROPICAL CYCLONES IN SOUTHEASTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 110600Z8 --- NEAR 28.2S2 171.9W8 MOVEMENT PAST SIX HOURS - 175 DEGREES AT 12 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 BECOMING EXTRATROPICAL REPEAT POSIT: 28.2S2 171.9W8 --- FORECASTS: 12 HRS, VALID AT: 111800Z1 --- 30.4S7 171.7W6 MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT BECOMING EXTRATROPICAL VECTOR TO 24 HR POSIT: 155 DEG/ 13 KTS --- 24 HRS, VALID AT: 120600Z9 --- 32.8S3 170.5W3 MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT EXTRATROPICAL --- REMARKS: TROPICAL CYCLONE MONA HAS TRACKED SOUTHWARD AT 12 KNOTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED UPON 110552Z INFRARED SATELLITE DATA. THE WARNING INTENSITY IS BASED UPON CURRNET SATELLITE INTENSITY ESTIMATES OF 30 KNOTS. ANUMATED SATELLITE IMAGERY CONTINUES TO SHOW THE SYSTEM IS BECOMING EXTRA-TROPICAL AND THE CONVECTION IS COMPLETED SHEARED FROM THE LOW LEVEL CIRCULATION. THE FORECAST TRACK IS FOR CONTINUED MOVEMENT TO THE SOUTHEAST AND EXTRA-TROPICAL IN 24 HOURS. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 110600Z IS 16 FEET. REFER TO WWPN30 PHNC FOR ADDITIONAL SEA HEIGHT INFORMATION. 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.
Document: tropical_cyclone_mona_jtwc_advisories.htm
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