THURSDAY, DECEMBER 12, 1991
10
A NORTHERLY REPLENISHMENT OF THE WINTER MONSOON, WHICH ARRIVED
MOMENTARILY DURING THE DAY EARLY ON NOVEMBER 10, RETREATED
BEFORE
FINALLY BECOMING ESTABLISHED THAT NIGHT.
THE DRY CONTINENTAL AIR MASS ASSOCIATED WITH THE NORTHERLIES ENSURED FINE AND VERY DRY CONDITIONS FOR THE NEXT FIVE DAYS.
HUMIDITY THE DAILY MEAN RELATIVE
STAYED BELOW 50 PER CENT DURING THE PERIOD AS A FURTHER REPLENISHMENT OF THE NORTHERLIES
DRY EXTREMELY ARRIVED ON THE EVENING OF NOVEMBER 13. THE AND THE BLUSTERY WINDS ABETTED THE SPREADING OF HILL FIRES.
CONDITIONS
MOISTER CONDITIONS RETURNED ON NOVEMBER 16 AFTER WINDS HAD
FRESH TURNED EASTERLY THE PREVIOUS DAY. WINDS WERE
AT FIRST BEFORE GRADUALLY MODERATING OVER THE NEXT COUPLE OF DAYS.
THE WEATHER TURNED CLOUDIER ON NOVEMBER 19 FRESHENED AGAIN.
AS THE EASTERLIES
AND
PERSISTED
INTO
AFTER SOME SUNNY INTERVALS ON THE MORNING OF NOVEMBER 20, LIGHT RAIN BECAME MORE FREQUENT LATER IN THE DAY THE FOLLOWING MORNING.
EVEN THOUGH THE RAIN THEN EASED OFF, THE CLOUDS REMAINED AND DID NOT BREAK UNTIL THE EASTERLIES MODERATED ON NOVEMBER 22.
MUCH WARMER DAY A LULL IN THE NORTHEAST MONSOON LED TO A
ON
THE NOVEMBER 23.
WEATHER BECAME CLOUDY AND COOLER AS A STRONG EASTERLY SURGE ARRIVED EARLY NEXT DAY.
LASTED EASTERLIES
LIGHT RAIN STARTED ON THE EVENING OF NOVEMBER 24 AND
DURING TILL THE MORNING OF NOVEMBER 26,
WHICH
THE TIME WERE GRADUALLY REPLACED BY A FRESH NORTHERLY AIRSTREAM.
EVEN COOLER AIR ARRIVED FROM THE INLAND REGION OF AND THE TEMPERATURE DROPPED PROGRESSIVELY TO 15.8 DEGREES IN THE EARLY HOURS OF NOVEMBER 26.
THE
MONTH'S
GUANGDONG LOWEST OF
THE SAME MINIMUM WAS ATTAINED EARLY ON NOVEMBER 28 AS CLEARING SKY ALLOWED MORE EFFECTIVE NIGHT-TIME COOLING.
HOWEVER, THE FINE WEATHER TURNED OUT TO BE RATHER
AS CLOUDS RETURNED ON NOVEMBER 29.
THE
SHORT-LIVED
A WEAK NORTHEAST MONSOON MAINTAINED THE CLOUDY WEATHER WHICH PERSISTED TILL THE END OF THE MONTH.
THERE WERE SIX TROPICAL CYCLONES OVER THE WESTERN NORTH
OF PACIFIC AND THE SOUTH CHINA SEA IN THE MONTH
NOVEMBER, BUT NONE HAD ANY DIRECT IMPACT ON THE WEATHER IN HONG KONG.
OF THE THREE TROPICAL CYCLONES THAT ENTERED
ENHANCED SEA, THE PRESENCE OF SETH AND WILDA
THE OVER THE COASTAL WATERS OF SOUTHERN CHINA.
THE SOUTH CHINA NORTHEAST MONSOON
/DURING THE