ABIO10 PGTW 161800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN /OCEAN/161800Z-171800ZJUN2019// REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/161351ZJUN2019// AMPN/REF A IS A TROPICAL CYCLONE WARNING.// RMKS/ 1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: (1) AT 161200Z, TROPICAL CYCLONE 02A (VAYU) WAS LOCATED NEAR 20.5N 65.3E, APPROXIMATELY 275 NM SOUTH- SOUTHWEST OF KARACHI, PAKISTAN, AND HAD TRACKED SOUTHEASTWARD AT 03 KNOTS OVER THE PAST SIX HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 40 KNOTS GUSTING TO 50 KNOTS. SEE REF A (WTIO31 PGTW 161500) FOR FURTHER DETAILS. (2) NO OTHER TROPICAL CYCLONES. B. TROPICAL DISTURBANCE SUMMARY: NONE. 2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE.// NNNN
Cyclone names are selected in advance by the RA I Tropical Cyclone Committee of the World Meteorological Organization.
Classification of cyclones depends on the maximum continuous wind speed.
Cyclones migrating from the Australian observation area over the 90th degree of longitude are given a new name.
The other way around, they keep their name.
is, with 1 min peaks of 285 km/h, the strongest tropical cyclone measured in the southwestern Indian Ocean.
|Cyclone Classes||When they come into effect|
|Class 1||If possible 36 to 48 hours before Mauritius, gusts of up to 120 km/h are to be expected.|
|Class 2||Issued to allow, as far as practicable, 12 hours of daylight before gusts of 120 km/h occur|
|Class 3||Issued to allow, as far as possible, 6 hours of daylight before gusts of 120 km/h occur.|
|Class 4||It is issued when gusts of 120 km/h have been registered in some places and are expected.|
|Cyclone Warning Removed||It is issued when there is no longer a risk of gusts above 120 km/h.|