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MONDAY, MAY 15, 1978
A WEAK RIDGE OF HIGH PRESSURE COVERED SOUTHEAST CHINA FROM APRIL 11 TO 14 AND THE WEATHER IN HONG KONG WAS MAINLY FINE APART FROM SOME FOG ON APRIL 11 TO 13.
SHOWERS AND THUNDERSTORMS WERE AGAIN REPORTED ON APRIL 15 AND 16. RAIN WAS HEAVIEST BETWEEN 8 P... AND 11 P.M. ON APRIL 16 WHEN A COLD FRONT ARRIVED OVER HONG KONG.
DURING THESE THREE HOURS THE ROYAL OBSERVATORY RECORDED 52.7 MM OF RAINFALL OR NEARLY A QUARTER OF THE MONTH'S TOTAL.
WEATHER GRADUALLY IMPROVED ON APRIL 18 AND BECAME FINE AND SUNNY FROM APRIL 20 TO 21 WITH FOG AT SEA EARLY ON APRIL 20.
A WEAK COLD FRONT REACHED THE SOUTH CHINA COAST ON THE EVENING OF APRIL 21 AND CONDITIONS BECAME MAINLY CLOUDY DURING THE FOLLOWING SIX DAYS.
ALTHOUGH TYPHOON OLIVE WAS OVER THE NORHTERN PART OF THE SOUTH CHINA SEA FROM APRIL 23 TO 25, IT HAD LITTLE EFFECT ON THE WEATHER.
IT WAS BRILLIANTLY FINE ON THE MORNING OF APRIL 25 AND IN THE AFTERNOON A MAXIMUM TEMPERATURE OF 31.5 DEGREES WAS RECORDED, THE HIGHEST IN THE MONTH.
A TROUGH OF LOW PRESSURE REMAINED STATIONARY NEAR THE SOUTH CHINA COAST FROM APRIL 28 UNTIL THE END OF THE MONTH AND GAVE RISE TO FREQUENT SHOWERS AND THUNDERSTORMS.
RAIN WAS VERY HEAVY ON THE MORNING OF APRIL 28 AND FLOODING WAS REPORTED IN MANY LOCATIONS ON BOTH SIDES OF THE HARBOUR.
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