4
SUNDAY, NOVEMBER 12, 1989
LOCALLY, WINDS ONLY INCREASED RETURNED QUICKLY ON OCTOBER 22.
MARGINALLY AND FINE WEATHER
UNDER THE INFLUENCE OF A RIDGE OF HIGH PRESSURE OVER SOUTH CHINA. FINE WEATHER PREVAILED FROM OCTOBER 23 TO 28. HOWEVER. STABLE CONDITIONS AND INCREASING MOISTURE IN THE LOWER ATMOSPHERE GAVE RISE TO PERIODS OF HAZE AND POOR VISIBILITY FROM OCTOBER 25 TO 28.
A WEAK SURGE OF COOL AIR FROM THE EAST BROUGHT CLOUDINESS AND PATCHES OF LIGHT RAIN EARLY ON OCTOBER 29. CLOUDS BROKE DURING THE DAY. FINE BUT HAZY WEATHER THEN PERSISTED TILL THE END OF THE MONTH.
DURING THE MONTH OF OCTOBER, NO AIRCRAFT WERE DIVERTED DUE ΤΟ ADVERSE WEATHER. A THUNDERSTORM WARNING WAS ISSUED ON OCTOBER 16. THE RED FIRE DANGER WARNING WAS IN EFFECT ON OCTOBER 7 AND 8 AND YELLOW FIRE DANGER WARNINGS WERE ISSUED FOR OCTOBER 6 TO 10,
14.
15 AND 20
TO 22.
A TOTAL OF SIX TROPICAL CYCLONES OCCURRED OVER NORTH PACIFIC AND THE SOUTH CHINA SEA DURING THE MONTH.
WEATHER SYSTEM
SIGNALS HOISTED DURING THE MONTH WERE AS FOLLOWS:
SIGNAL
DATE AND TIME OF HOISTING
THE
WESTERN
DATE AND TIME OF LOWERING
TYPHOON BRIAN
1
WINTER
MONSOON
STRONG MONSOON
TYPHOON
1
ANGELA
3
WINTER MONSOON
STRONG MONSOON
TYPHOON DAN
1
SEPTEMBER 30 5.10 PM OCTOBER 1
.45 PM
OCTOBER 2 12 NOON
OCTOBER 6 8.50 PM OCTOBER 7 9 TM
OCTOBER 9 9.15 AM
OCTOBER 1 1 8 IM OCTOBER 12 5 AN
OCTOBER 13 6.30 AM
WINTER MONSOON
STRONG MONSOON
WINTER
STRONG
MONSOON
MONSOON
OCTOBER 8.30 PM
19
OCTOBER 1 3.45 PM OCTOBER 2 12 NOON
OCTOBER 4 9.45 AM
OCTOBER 7
9 PM
OCTOBER O 9.45 AM
OCTOBER 10 10.05 AM
OCTOBER 12
5 AM
OCTOBER 13
6.30 AM
OCTOBER 14 12 NOON
OCTOBER 20 9.15 AM
/THE MONTH'S