THURSDAY, APRIL 11, 1985
THE TROUGH OF LOW PRESSURE EVENTUALLY REACHED HONG KONG EARLY ON MARCH 29 BRINGING SQUALLY THUNDERSTORMS AND PERIODS OF HEAVY RAIN. STRONG EASTERLY WINDS WERE EXPERIENCED OFF-SHORE AND IN EXPOSED AREAS DURING THE DAY. IT REMAINED OVERCAST WITH LIGHT RAIN ON MARCH 30 AND THE WINDS GRADUALLY MODERATED. THE WEATHER CONTINUED CLOUDY WITH LIGHT RAIN ON MARCH 31.
THERE WERE NO TROPICAL CYCLONES OVER THE WESTERN NORTH PACIFIC AND THE SOUTH CHINA SEA DURING THE MONTH.
DURING THE MONTH FIVE AIRCRAFT WERE DI VERTED FROM HONG KONG DUE TO ADVERSE WEATHER. THE YELLOW FIRE DANGER WARNING WAS IN EFFECT ON MARCH 24 AND THUNDERSTORM WARNINGS WERE ISSUED ON MARCH 29.
SIGNALS HOISTED DURING THE MONTH WERE AS FOLLOWS:
WEATHER SYSTEM
SIGN AL
DATE AND TIME OF HOISTING
DATE AND TIME OF LOWERING
WINTER MONSOON STRONG MONSOON
WINTER MONSOON
WINTER MONSOON STRONG MONSOON
WINTER MONSOON STRONG MONSOON
STRONG MONSOON
MARCH 5 8.30 AM
MARCH 29 8.10 AM
MARCH 29 6.35 PM
MARCH 31 11.00 PM
MARCH 5 11.30 AM
MARCH 29 2.47 PM
MARCH 30 1.40 AM
APRIL 1 8.10 AM
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:
SUNSHINE
RAINFALL
CLOUDINESS
RELATIVE HUMIDITY
MEAN MAXIMUM TEMPERATURE
MEAN TEMPERATURE
MEAN MINIMUM TEMPERATURE
MEAN DEW POINT
TOTAL EVAPORATION
51.7 HOURS = 49.7 HOURS BELOW NORMAL
64.2 MM - 9.4 MM ABOVE NORMAL
38% ☐ 12% MORE THAN NORMAL
82%
#
- NORMAL
19.0 DEG. C 2.3 DEG. C BELOW NORMAL
16.7 DEG. C = 1.8 DEG. C BELOW NORMAL
15.0 DEG. C = 1.3 DEG. C BELOW NORMAL
13.6 DEG. C = 1.4 DEG. C BELOW NORMAL
63.4 MM = 36.5 MM BELOW NORMAL
MAXIMUM TEMPERATURE OF 34.9 DEGREES CELSIUS WAS RECORDED ON MARCH 29,
MINIMUM TEMPERAT. RE OF 10. DEGREES CELSIUS WAS RECORDED ON MARCH 14.