15
THURSDAY, OCTOBER 15, 1992
ITS
31.
1
DEGREES
1
AND MIGHT BE
IN RESPECT OF ITS DAILY MEAN TEMPERATURE OF MINIMUM TEMPERATURE OF 29.5 DEGREES, SEPTEMBER REGARDED AS THE HOTTEST SEPTEMBER DAY ON RECORD.
ONE SIGNIFICANT RAINY EPISODE OCCURRED DURING THE PERIOD WHEN THE REMNANT OF TYPHOON OMAR MOVED ACROSS GUANGDONG AND PASSED TO THE NORTH OF HONG KONG.
OVERALL, THE MONTH'S RAINFALL OF 63.1 MILLIMETRES WAS ONLY ABOUT 21 PER CENT OF THE SEPTEMBER NORMAL OF 299.7 MILLIMETRES.
IT WAS THE DRIEST SEPTEMBER SINCE 1966 AND SEPTEMBER ON RECORD.
THE FOURTH DRIEST
TOTAL RAINFALL SINCE JANUARY 1 AMOUNTED TO 2,571.4 MILLIMETRES. WHEN COMPARED WITH THE PERIOD'S AVERAGE OF 2,007.1 MILLIMETRES, RAINFALL SO FAR IN 1992 WAS STILL ABOVE NORMAL BUT BY A REDUCED MARGIN OF 28 PER CENT.
THE HOT WEATHER ASSOCIATED WITH THE PASSAGE OF SEVERE TROPICAL STORM POLLY WAS CARRIED OVER FROM AUGUST INTO SEPTEMBER.
WEST TO NORTHWESTERLY WINDS BROUGHT DRY AIR OFF MAINTAINED A SPELL OF FINE WEATHER DESPITE SOME HAZE AND 3.
THE LAND AND ON SEPTEMBER 2
EVEN THOUGH POLLY HAD WEAKENED AND MOVED AWAY BY THEN, THE HEAT DID NOT RELENT AS TYPHOON OMAR SOON FOLLOWED AND MOVED TOWARDS TAIWAN.
TEMPERATURES AT THE ROYAL OBSERVATORY CLIMBED ΤΟ THE MONTH'S
HIGHEST OF 33.5 DEGREES ON SEPTEMBER 4.
THE WEATHER TURNED CLOUDY ON SEPTEMBER 5 AS OMAR SWEPT ACROSS TAIWAN AND CAME NEARER. BUT STILL THE OPPRESSIVE HEAT LINGERED, CULMINATING IN THE DEVELOPMENT OF THUNDERSTORMS THAT EVENING.
MEANWHILE, THE WESTERLIES FRESHENED AND RAIN BECAME FREQUENT OVERNIGHT. AS THE REMNANT OF OMAR MOVED PAST TO THE NORTH OF HONG KONG, WINDS TURNED SOUTHEASTERLY THE NEXT DAY BUT REMAINED FRESH AND GUSTY.
THERE WERE ALSO OCCASIONAL STRONG WINDS OFFSHORE ON THE NIGHT OF SEPTEMBER 6. THE HEAVIEST DOWNPOLR OCCURRED IN THE NEW TERRITORIES.
OVER 120 MILLIMETRES OF RAINFALL WAS RECORDED IN THE YUEN LONG AREA ON THE MORNING OF SEPTEMBER 7 AND 23 CASES OF FLOODING WERE REPORTED.
WINDS SOON MODERATED DURING THE DAY BUT LIGHT RAIN PERSISTED TILL THE NEXT MORNING, ENDING WITH AN OUTBREAK OF THUNDERY SHOWERS NEAR MIDDAY.
THE SUN RE-APPEARED ON THE AFTERNOON OF SEPTEMBER 8 AND THE WEATHER STAYED FINE THE NEXT DAY APART FROM A FEW ODD SHOWERS.
/THE ARRIVAL