ABIO10 PGTW 311800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN 
OCEAN/311800ZMAR2023-011800ZAPR2023//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/311351ZMAR2023//
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: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 31MAR23 1200Z, TROPICAL CYCLONE 17S (HERMAN) WAS LOCATED 
NEAR 17.8S 106.7E, APPROXIMATELY 497 NM WEST-NORTHWEST OF LEARMONTH, 
AUSTRALIA, AND HAD TRACKED SOUTHEASTWARD AT 05 KNOTS OVER THE PAST SIX 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 110 KNOTS 
GUSTING TO 135 KNOTS. SEE REF A (WTXS31 PGTW 311500) FOR FURTHER 
DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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