N
SUNDAY, AUGUST 21, 1983
DURING THE MONTH, THREE TROPICAL CYCLONES FORMED OVER THE WESTERN NORTH PACIFIC AND CAME WITHIN 400 NAUTICAL MILES OF HONG KONG. TROPICAL CYCLONE SIGNALS WERE HOISTED ON ALL THREE OCCASIONS.
SEVERE *TROPICAL STORM TIP DEVELOPED OVER THE PHILIPPINES ABOUT 130 NAUTICAL MILES SOUTHEAST OF MANILA ON JULY 10. IT MOVED NORTHWESTWARDS, ACROSS THE NORTHERN PART OF THE SOUTH CHINA SEA AND EVENTUALLY DISSIPATED NEAR ZHANJIANG ON JULY 13.
TYPHOON VERA ORIGINATED OVER THE WESTERN NORTH PACIFIC ABOUT 700 NAUTICAL MILES EAST-SOUTHEAST OF MANILA ON JULY 12. IT SWEPT ACROSS THE PHILIPPINES AND THE SOUTH CHINA SEA BETWEEN JULY 14 AND 16 AND LANDED AT NORTH-EASTERN HAINAN ON JULY 17. IT FINALLY DISSIPATED ABOUT 200 NAUTICAL MILES WEST OF HANOI EARLY ON JULY 19.
TYPHOON WAYNE DEVELOPED OVER THE WESTERN NORTH PACIFIC ABOUT 510 NAUTICAL MILES WEST OF GUAM ON JULY 22. IT PASSED THROUGH THE BASHI CHANNEL EARLY ON JULY 25 AND LANDED NEAR XIAMEN IN SOUTHEAST CHINA LATER DURING THE DAY. IT EVENTUALLY DISSIPATED INLAND EARLY ON JULY 26.
THERE WERE NO REPORTS OF DAMAGE IN HONG KONG.
DURING THE MONTH, NO AIRCRAFT WERE DIVERTED FROM HONG KONG DUE TO ADVERSE WEATHER.
THUNDERSTORM WARNINGS WERE ISSUED ON JULY 16, 17, 27 AND 28 WHILE A FLOOD WARNING WAS IN EFFECT ON JULY 27. NO FIRE DANGER WARNINGS WERE ISSUED.
SIGNALS HOISTED DURING THE MONTH WERE AS FOLLOWS:
WEATHER SYSTEM SIGNAL DATE AND TIME
OF HOISTING
DATE AND TIME OF LOWERING
SEVERE TROPICAL
1
JULY 12 6 AM
JULY 13
2 PM
STORM TIP
TYPHOON VERA
13
1
JULY 16 6.30 AM
JULY 16
3
JULY 16 4 PM
JULY 17
4 PM 4.05 PM
TYPHOON WAYNE
1
JULY 24 9.50 PM
JULY 25
4.10 PM
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE :
SUNSHINE
RAINFALL
CLOUDINESS
RELATIVE HUMIDITY
268.4 HOURS 37.5 HOURS ABOVE NORMAL
131.2 MM - 185.6 MM BELOW NORMAL
63 PER CENT
3 PER CENT LESS THAN NORMAL
78 PER CENT 3 PER CENT LOWER THAN
-
NORMAL
MEAN MAXIUM