WEDNESDAY, JUNE 17, 1992
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THE WEATHER BECAME EVEN MORE UNSETTLED AS ANOTHER TROUGH OF LOW PRESSURE FORMED OVER SOUTHERN CHINA.
HEAVY RAIN AND THUNDERSTORMS AFFECTED THE TERRITORY ON THE AFTERNOON OF MAY 30. THE TROUGH WEAKENED AFTER CROSSING THE SOUTH CHINA COAST AND SOME BRIGHT INTERVALS EMERGED ON MAY 31.
DURING THE MONTH, NO TROPICAL CYCLONES OCCURRED WESTERN NORTH PACIFIC AND THE SOUTH CHINA SEA.
OVER THE
INDEED, MORE THAN THREE MONTHS HAD ELAPSED SINCE THE LAST TROPICAL CYCLONE EKEKA WAS OBSERVED IN FEBRUARY. THERE WERE 21 FLIGHTS DIVERTED DUE TO INCLEMENT WEATHER IN MAY. THUNDERSTORM WARNINGS WERE IN EFFECT ON MAY 2, 7-10, 14-17, 21 AND 29-30. FLOOD WARNINGS WERE ISSUED ON MAY 7-9, 15, 17, AND 30. A LANDSLIP WARNING WAS IN EFFECT ON MAY 8-11.THE STRONG MONSOON SIGNAL WAS HOISTED ONCE EARLIER IN THE MONTH, WITH DETAILS GIVEN AS FOLLOWS:
WEATHER SYSTEM
SIGNAL
DATE AND TIME
OF HOISTING
DATE AND TIME OF LOWERING
WINTER
MONSOON
STRONG MONSOON
MAY 3
10.30 AM
MAY 3 5 PM
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:
TOTAL BRIGHT SUNSHINE
94.0 HOURS
59.8 HOURS BELOW NORMAL
MEAN DAILY GLOBAL
SOLAR RADIATION.
TOTAL RAINFALL
MEAN AMOUNT OF CLOUD
MEAN RELATIVE HUMIDITY
MEAN DAILY MAXIMUM AIR
TEMPERATURE
MEAN AIR TEMPERATURE
MEAN DAILY MINIMUM AIR
TEMPERATURE
MEAN DEW POINT
11.38 MJ/SQ.M ; 4.74 MJ/SQ.M
BELOW NORMAL
602.3 MM ;
285.6 MM ABOVE NORMAL
80%
;
6% MORE THAN NORMAL
86%
;
3% HIGHER THAN NORMAL
271. DEGREES CELSIUS
24.8 DEGREES CELSIUS
23.3 DEGREES CELSIUS
22.3 DEGREES CELSIUS
; 1.6 DEGREE CELSIUS
BELOW NORMAL
1.1 DEGREE CELSIUS BELOW NORMAL
0.6 DEGREE CELSIUS BELOW NORMAL
0.3 DEGREE CELSIUS BELOW NORMAL
TOTAL EVAPORATION
79.8 MM
57.9 MM BELOW NORMAL
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