FRIDAY, JANUARY 17, 1986
13
A COLD FRONT PASSED THE SOUTH CHINA COAST ON THE EARLY MORNING OF DECEMBER 31. NORTHERLY WINDS FRESHENED DURING THE DAY AND IT BECAME COLD DURING THE EVENING.
DURING THE MONTH TWO TROPICAL CYCLONES DEVELOPED OVER THE WESTERN NORTH PACIFIC AND THE SOUTH CHINA SEA BUT NONE AFFECTED HONG KONG.
NO AIRCRAFT WERE DIVERTED FROM HONG KONG DUE TO ADVERSE WEATHER.
THE RED FIRE DANGER WARNING WAS IN EFFECT FROM DECEMBER 14
THE YELLOW FIRE DANGER TO 17, ON 22 AND AGAIN FROM 23 TO 25. WARNING WAS IN EFFECT ON DECEMBER 1, 2, 7, 8, 14, 19, 20, 23, 26 AND 29.
THE STRONG MONSOON SIGNAL WAS HOISTED FOUR TIMES DURING THE MONTH AS FOLLOWS:
WEATHER SYSTEM
SIGNAL
DATE AND TIME OF HOISTING
DATE AND TIME OF LOWERING
WINTER MONSOON STRONG MONSOON WINTER MONSOON STRONG MONSOON
DEC 10
8 AM
DEC 10
2.05PM
DEC 11
4 AM
DEC 11
5.05PM
WINTER MONSOON STRONG MONSOON
DEC 14
6.05PM
DEC 15
3PM
WINTER MONSOON
STRONG MONSOON
DEC 22
9.05AM
DEC 22
NOON
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE :
182.3 HOURS 3.0 HOURS ABOVE NORMAL
-
SUNSHINE
RAINFALL
CLOUDINESS
RELATIVE HUMIDITY
MEAN MAXIMUM TERMPERATURE
MEAN TEMPERATURE
MEAN MINIMUM TEMPERATURE
MEAN DEW POINT
TOTAL EVAPORATION
12.9 MM =
12.4 MM BELOW NORMAL
50 %
2% LESS THAN NORMAL
67%
=
2% LOWER THAN NORMAL
19.7 DEG. C. 1.1 DEG. C. BELOW NORMAL
-
E
17.2 DEG. C. - 0.5 DEG. C. BELOW NORMAL 14.9 DEG. C. 0.3 DEG. C. BELOW NORMAL
10.6 DEG. C.
99.6 MM
0.8 DEG. C. BELOW NORMAL
- 19.0 MM BELOW NORMAL
MAXIMUM TEMPERATURE OF 25.6 DEG. C. WAS RECORDED ON DECEMBER 6 MINIMUM TEMPERATURE OF 9.6 DEG. C. WAS RECORDED ON DECEMBER 17
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