Zyklone
Im Januar 2002 stürmte einer der stärksten Zyklone der letzten Jahrzehnte über Mauritius. Sein Name war Dina. Mit Windgeschwindigkeiten von über 270 km/h verwüstet ein solcher Sturm ganze Landstriche, zerstört große Teile der Infrastruktur, Landschaften und auch Korallenriffs. Für Touristen sind diese Stürme i.A. nicht bedenklich, da die Hotels recht gut geschützt sind und sich auf die Problematik eingestellt haben. Es kann die Urlaubsfreuden allerdings schon mal um 2-3 Tage verkürzen.
Hier ein paar Satellitenbilder von Zyklon Dina:
Aktuell kann man im Joint Typhoon Warning Center Products (Sturm-Warnungszentrum) die Situation abfragen. Hier werden für den pazifischen und indischen Ozean alle Stürme beobachtet und über die aktuelle Lage berichtet.
Zyklon "Dina" vom 21.01.2001
Eine typische Zyklonwarnung sieht folgendermaßen aus (Englisch):
SUBJ: TROPICAL CYCLONE WARNING WTXS31 PGTW 212100 IMMEDIATE DELIVERY REQ TO AMEMBASSY PORT LOUIS 1. TROPICAL CYCLONE 10S (DINA) WARNING NR 009 01 ACTIVE TROPICAL CYCLONE IN SOUTHIO MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 211800Z2 --- NEAR 19.3S3 58.5E8 MOVEMENT PAST SIX HOURS - 260 DEGREES AT 11 KTS POSITION ACCURATE TO WITHIN 025 NM POSITION BASED ON EYE FIXED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT RADIUS OF 100 KT WINDS - 030 NM RADIUS OF 050 KT WINDS - 040 NM NORTHEAST QUADRANT 070 NM SOUTHEAST QUADRANT 070 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT RADIUS OF 035 KT WINDS - 110 NM NORTHEAST QUADRANT 140 NM SOUTHEAST QUADRANT 140 NM SOUTHWEST QUADRANT OVER WATER 110 NM NORTHWEST QUADRANT REPEAT POSIT: 19.3S3 58.5E8 --- FORECASTS: 12 HRS, VALID AT: 220600Z0 --- 19.6S6 56.5E6 MAX SUSTAINED WINDS - 130 KT, GUSTS 160 KT RADIUS OF 100 KT WINDS - 030 NM RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT OVER WATER 080 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 035 KT WINDS - 110 NM NORTHEAST QUADRANT 140 NM SOUTHEAST QUADRANT OVER WATER 140 NM SOUTHWEST QUADRANT OVER WATER 110 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 260 DEG/ 07 KTS --- 24 HRS, VALID AT: 221800Z3 --- 19.8S8 55.0E0 MAX SUSTAINED WINDS - 135 KT, GUSTS 165 KT RADIUS OF 100 KT WINDS - 025 NM RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 080 NM SOUTHEAST QUADRANT OVER WATER 080 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 035 KT WINDS - 110 NM NORTHEAST QUADRANT 140 NM SOUTHEAST QUADRANT OVER WATER 140 NM SOUTHWEST QUADRANT 110 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 245 DEG/ 06 KTS --- 36 HRS, VALID AT: 230600Z1 --- 20.3S5 53.9E7 MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT RADIUS OF 100 KT WINDS - 025 NM RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 035 KT WINDS - 110 NM NORTHEAST QUADRANT 150 NM SOUTHEAST QUADRANT 150 NM SOUTHWEST QUADRANT 110 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 225 DEG/ 06 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 231800Z4 --- 21.2S5 53.0E8 MAX SUSTAINED WINDS - 140 KT, GUSTS 170 KT RADIUS OF 100 KT WINDS - 025 NM RADIUS OF 050 KT WINDS - 045 NM NORTHEAST QUADRANT 090 NM SOUTHEAST QUADRANT 090 NM SOUTHWEST QUADRANT 045 NM NORTHWEST QUADRANT RADIUS OF 035 KT WINDS - 110 NM NORTHEAST QUADRANT 150 NM SOUTHEAST QUADRANT 150 NM SOUTHWEST QUADRANT 090 NM NORTHWEST QUADRANT --- REMARKS: 212100Z6 POSITION NEAR 19.4S4 58.0E3. TROPICAL CYCLONE (TC) 10S (DINA), LOCATED APPROXIMATELY 75 NM NORTHEAST OF PORT LOUIS, HAS TRACKED WESTWARD AT 11 KNOTS DURING THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 211730Z4 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE INTENSITY ESTIMATES OF 115 AND 127 KNOTS. A 211738Z2 SSM/I PASS IS NO LONGER INDICATING CONCENTRIC EYEWALLS WITH 26 NM EYE DIAMETER NOTED IN LATEST INFRARED IMAGERY. THE MID-LEVEL SUBTROPICAL RIDGE SOUTH OF THE SYSTEM SHOULD INFLUENCE A GENERAL WESTWARD TRACK THROUGH THE NEXT 24 HOURS. AN UPSTREAM TROUGH IS EXPECTED TO WEAKEN THIS RIDGE BY 36 HOURS AND ALLOW FOR TC 10S (DINA) TO BEGIN TRACKING SOUTHWEST THROUGH THE REMAINDER OF THE PERIOD. THE FORECAST IS BASED ON A BLEND OF PERSISTENCE AND AVAILABLE NWP (NOGAPS, AVN, GFDN, UKMET) WHICH ARE ALL IN GOOD AGREEMENT ON THE SOUTHWEST MOTION LATE IN THE FORECAST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 211800Z2 IS 40 FEET. NEXT WARNINGS AT 220900Z3 AND 222100Z7.
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