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霧峰追風者|2019-4-24 17:58
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JTWC 強度升至70kts,MFR 強度升"強烈熱帶風暴"巔峰上望80KT。WTXS31 PGTW 240900
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TROPICAL CYCLONE 24S (KENNETH) WARNING NR 006//
RMKS/
1. TROPICAL CYCLONE 24S (KENNETH) WARNING NR 006
02 ACTIVE TROPICAL CYCLONES IN SOUTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
240600Z --- NEAR 10.9S 45.7E
MOVEMENT PAST SIX HOURS - 260 DEGREES AT 11 KTS
POSITION ACCURATE TO WITHIN 025 NM
POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
SATELLITE AND EXTRAPOLATION
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 015 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
015 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
025 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
105 NM SOUTHEAST QUADRANT
085 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
REPEAT POSIT: 10.9S 45.7E
---
FORECASTS:
12 HRS, VALID AT:
241800Z --- 11.2S 43.6E
MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
025 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
045 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT
105 NM SOUTHEAST QUADRANT
095 NM SOUTHWEST QUADRANT
065 NM NORTHWEST QUADRANT
VECTOR TO 24 HR POSIT: 260 DEG/ 10 KTS
---
24 HRS, VALID AT:
250600Z --- 11.5S 41.6E
MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 064 KT WINDS - 020 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
020 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
040 NM SOUTHEAST QUADRANT
040 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
100 NM SOUTHEAST QUADRANT
100 NM SOUTHWEST QUADRANT
060 NM NORTHWEST QUADRANT
VECTOR TO 36 HR POSIT: 255 DEG/ 06 KTS
---
36 HRS, VALID AT:
251800Z --- 11.8S 40.4E
MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
RADIUS OF 064 KT WINDS - 000 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 050 KT WINDS - 010 NM NORTHEAST QUADRANT
020 NM SOUTHEAST QUADRANT
010 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 070 NM NORTHEAST QUADRANT
070 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
020 NM NORTHWEST QUADRANT
VECTOR TO 48 HR POSIT: 235 DEG/ 04 KTS
---
EXTENDED OUTLOOK:
48 HRS, VALID AT:
260600Z --- 12.3S 39.7E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
080 NM SOUTHEAST QUADRANT
000 NM SOUTHWEST QUADRANT
000 NM NORTHWEST QUADRANT
VECTOR TO 72 HR POSIT: 220 DEG/ 02 KTS
---
72 HRS, VALID AT:
270600Z --- 12.9S 39.2E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
240900Z POSITION NEAR 11.0S 45.2E.
TROPICAL CYCLONE 24S (KENNETH), LOCATED APPROXIMATELY 148 NM EAST-
NORTHEAST OF COMOROS ISLAND, HAS TRACKED WESTWARD AT 11 KNOTS (KTS)
OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY
(MSI) DEPICTS AN IMPROVING CONVECTIVE SIGNATURE AND EXCELLENT RADIAL
OUTFLOW. IN ADDITION, THE MSI LOOP SUGGESTS AN EYE MAY REVEAL ITSELF
IN THE NEXT FEW HOURS. THE INITIAL POSITION IS PLACED WITH HIGH
CONFIDENCE USING THE MSI LOOP AND BY EXTRAPOLATING FROM AN EYE
FEATURE IN A 240313Z SSMIS 91 GHZ MICROWAVE IMAGE. THE INITIAL
INTENSITY OF 70 KTS IS HEDGED SLIGHTLY ABOVE PGTW/KNES DVORAK
CURRENT INTENSITY ESTIMATES OF T4.0 (65 KTS) BASED ON A 240347Z
CIMSS SATCON ESTIMATE OF 80 KTS. LOW (10-15 KT) VERTICAL WIND SHEAR
(VWS), RADIAL OUTFLOW, AND WARM (29-30 CELSIUS) SEA SURFACE
TEMPERATURES ARE VERY SUPPORTIVE OF CONTINUED INTENSIFICATION. FOR
THE DURATION OF THE FORECAST, TC 24S WILL TRACK ALONG THE NORTHERN
PERIPHERY OF A SUBTROPICAL RIDGE (STR). AN APPROACHING MID-LATITUDE
TROUGH IS EXPECTED TO CREATE A BREAK IN THE STR AS IT DISSIPATES BY
TAU 72. THROUGH TAU 24, THE ENVIRONMENT WILL SUPPORT RAPID
INTENSIFICATION TO 105 KTS BEFORE LAND INTERACTION ALONG THE
NORTHERN COAST OF MOZAMBIQUE WILL CAUSE THE SYSTEM TO WEAKEN
RAPIDLY. DYNAMIC MODEL GUIDANCE IS IN EXCELLENT AGREEMENT, LENDING
TO HIGH CONFIDENCE IN THE JTWC TRACK FORECAST. MAXIMUM SIGNIFICANT
WAVE HEIGHT AT 240600Z IS 24 FEET. NEXT WARNINGS AT 241500Z,
242100Z, 250300Z AND 250900Z. REFER TO TROPICAL CYCLONE 25S (LORNA)
WARNINGS (WTXS32 PGTW) FOR SIX-HOURLY UPDATES.//
NNNN
WTIO31 FMEE 240636
CMRS / CENTRE DES CYCLONES TROPICAUX DE LA REUNION
BULLETIN D'ANALYSE ET DE PREVISION CYCLONIQUE (SUD-OUEST OCEAN INDIEN)
0.A NUMERO DU BULLETIN : 7/14/20182019
1.A FORTE TEMPETE TROPICALE 14 (KENNETH)
2.A POSITION A 0600 UTC LE 24/04/2019 :
DANS UN RAYON DE 20 MN AUTOUR DU POINT 10.8 S / 45.8 E
(DIX DEGRES HUIT SUD ET QUARANTE CINQ DEGRES HUIT EST)
DEPLACEMENT: OUEST 10 KT
3.A ANALYSE DE DVORAK: 4.0/4.0/D 0.5/12 H
4.A PRESSION AU CENTRE: 986 HPA
5.A VENT MAX (MOYEN/10 MN): 60 KT
RAYON DES VENTS MAXIMAUX (RVM): 28 KM
6.A EXTENSION DES VENTS PAR QUADRANTS (KM):
28 KT NE: 110 SE: 170 SO: 190 NO: 170
34 KT NE: 90 SE: 110 SO: 130 NO: 110
48 KT NE: 60 SE: 60 SO: 60 NO: 60
7.A COTE/DIAM PREMIERE ISOBARE FERMEE: 1008 HPA / 700 KM
8.A EXTENSION VERTICALE DE LA CIRCULATION CYCLONIQUE: PROFONDE
1.B PREVISIONS:
12H: 24/04/2019 18 UTC: 11.0 S / 43.4 E, VENT MAX= 070 KT, CYCLONE TROPICAL
24H: 25/04/2019 06 UTC: 11.3 S / 41.2 E, VENT MAX= 080 KT, CYCLONE TROPICAL
36H: 25/04/2019 18 UTC: 11.6 S / 39.8 E, VENT MAX= 060 KT, DEPRESSION SUR TERRE
48H: 26/04/2019 06 UTC: 12.2 S / 39.1 E, VENT MAX= 040 KT, DEPRESSION SUR TERRE
60H: 26/04/2019 18 UTC: 12.6 S / 39.3 E, VENT MAX= 030 KT, DEPRESSION SUR TERRE
2.B TENDANCE ULTERIEURE:
NON RENSEIGNE
2.C COMMENTAIRES:
T=CI=4.0+
AU COURS DES SIX DERNIERES HEURES, LES BOUFFEES CONVECTIVES SONT
RESTEES TRES PUISSANTES AVEC DES SOMMETS TRES FROIDS PRES DU CENTRE. LE
CISAILLEMENT PRESENT SUR LA ZONE DE KENNETH EST PARTIELLEMENT
COMPENSER PAR LE DEPLACEMENT RAPIDE DU SYSTEME, CE QUI PERMETTRA AU
SYSTEME DE MAINTENIR SON INTENSIFICATION FUTURE. LES DERNIERES IMAGES
MICRO-ONDE DE 0313UTC PERMETTENT DE VALIDER UNE CIRCULATION DE BASSES
COUCHES BIEN SOLIDE. L'ANALYSE DVORAK EN CONFIGURATION CDO SITUE LE
SYSTEME AU DERNIER SEUIL DE FORTE TEMPETE TROPICALE.
PAS DE CHANGEMENT AU NIVEAU DE LA PREVISION, KENNETH EST PREVU SE
DEPLACER RAPIDEMENT VERS L'OUEST SUR LA FACE NORD DES HAUTES
PRESSIONS SUBTROPICALES DE BASSE A MOYENNE TROPO. LE SYSTEME DEVRAIT
SELON CETTE TRAJECTOIRE ATTERIR SUR LA COTE NORD DU MOZAMBIQUE JEUDI
EN FIN D'APRES-MIDI APRES UN TRANSIT AU NORD IMMEDIAT DE LA GRANDE
COMORES DANS LA NUIT MERCREDI A JEUDI, PASSANT A PRES DE 50KM DES COTES.
ENSUITE, L'ARRIVEE PAR LE SUD-OUEST D'UN PROFOND TALWEG POURRAIT
PERMETTRE AUX RESTES DU MINIMUM SUR TERRE DE TRANSITER VERS LE NORD
DU MOZAMBIQUE AVANT DE REVENIR SUR LE MER A ECHEANCE DE LUNDI
PROCHAIN MAIS CE SCENARIO RESTE POUR INSTANT ENCORE TRES INCERTAIN.
LE DEBUT DE LA BAISSE DU CISAILLEMENT VERTICAL DE SECTEUR EST, QUI SE
POURSUIVRA JEUDI, DEVRAIT PERMETTRE AU SYSTEME DE POURSUIVRE SON
INTENSIFICATION. LA MAJORITE DES MODELES NUMERIQUES PREVOIENT LE STADE
DE CYCLONE TROPICAL AVANT L'ATTERRISSAGE.
KENNETH EST DONC UN SYSTEME DANGEREUX QUAND IL SERA AU PLUS PRES DES
ILES LES PLUS NORD DE L'ARCHIPEL DES COMORES ET EN APPROCHE DE LA
REGION DU NORD DU MOZAMBIQUE / SUD TANZANIE. LE SYSTEME VA GENERER
AUSSI UNE SURCOTE LORS DE SON ATTERRISSAGE SUR LES COTES DU
MOZAMBIQUE, POUVANT ATTEINDRE ENTRE 2 ET 4M SUR CERTAINES ZONES, A
LAQUELLE IL FAUT AJOUTER LE DEFERLEMENT DES VAGUES ET LE PHENOMENE
D'ECOULEMENT DES FORTES PLUIES, POUVANT OCCASIONNER DES INONDATIONS
SUR LE MOZAMBIQUE. LES HABITANTS DE CES SECTEURS SONT INVITES A SUIVRE
DE PRES L'EVOLUTION DE CE SYSTEME AU COURS DES PROCHAINS JOURS.
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