22
TUESDAY, APRIL 12, 1988
29,
ON MARCH
THE COLD FRONT PASSED HONG KONG SHORTLY AFTER MIDDAY GIVING RISE TO SOME HEAVY SHOWERS AND A DROP IN TEMPERATURE.
PRIOR TO THE ARRIVAL OF THE COLD FRONT, HEAVY FOG ON THE MORNING OF MARCH 29 RESULTED IN TEMPORARY SUSPENSION OF FERRY SERVICES BETWEEN CENTRAL AND CHEUNG CHAU AND THOSE IN TOLO HARBOUR.
OVERCAST CONDITIONS PREVAILED AFTER THE PASSAGE OF THE COLD FRONT. AS A RESULT, TEMPERATURES STAYED ON THE LOW SIDE FOR THE LAST TWO DAYS OF THE MONTH.
DURING THE MONTH OF MARCH, NO TROPICAL CYCLONE OCCURRED OVER THE WESTERN NORTH PACIFIC AND THE SOUTH CHINA SEA.
THIRTY-EIGHT AIRCRAFT WERE DIVERTED FROM HONG KONG DUE TO HEAVY FOG. A THUNDERSTORM WARNING WAS ISSUED ON MARCH 22.
THE YELLOW FIRE DANGER WARNING WAS IN EFFECT ON MARCH 6 AND 27 AND THE RED FIRE DANGER WARNING WAS IN EFFECT ON MARCH 9 AND 10.
13
7
THE STRONG MONSOON SIGNAL WAS NOT HOISTED DURING THE MONTH.
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:
TOTAL BRIGHT SUNSHINE
MEAN DAILY GLOBAL SOLAR
RADIATION
TOTAL RAINFALL
MEAN AMOUNT OF CLOUD
37.1 HOURS ; 64.3 HOURS BELOW NORMAL
6.58 MJ/SQ.M; 4.84 MJ/SQ.M BELOW NORMAL
40.6 MM;
90 PER CENT;
14.2 MM BELOW NORMAL
MEAN RELATIVE HUMIDITY
MEAN DAILY MAXIMUM AIR
TEMPERATURE
MEAN AIR TEMPERATURE
MEAN DAILY MINIMUM AIR
TEMPERATURE
MEAN DEW POINT
TOTAL EVAPORATION
84 PER CENT ;
18.9 DEGREES ; CELSIUS
16.8 DEGREES ; CELSIUS
15.2 DEGREES ; CELSIUS
14.1 DEGREES ;
CELSIUS
49.6 MM :
14 PER CENT MORE THAN NORMAL
2 PER CENT HIGHER THAN NORMAL
2.4 DEGREES CELSIUS BELOW NORMAL
1.7 DEGREES CELSIUS BELOW NORMAL
1.1 DEGREES CELSIUS BELOW NORMAL
0 .9 DEGREE CELSIUS BELOW NORMAL
46.3 MM BELOW NORMAL
/23