SUNDAY, AUGUST 6, 1989
COOLER AIR NORTH OF THE TROUGH CAUSED THE TEMPERATURE FROM 29.7 DEGREES ON JULY 28 TO 22.2 DEGREES THE NEXT TEMPERATURE FELL FURTHER TO 21.7 DEGREES ON THE MORNING OF BREAKING THE RECORD FOR THE LOWEST TEMPERATURE FOR JULY.
AFTER THE TROUGH OF LOW PRESSURE MOVED FURTHER SOUTH. REMAINED DULL WITH RAIN CONTINUING ON JULY 30 BUT EASING OFF 31.
ΤΟ DROP DAY. THE JULY 30,
WEATHER ON JULY
DUE ΤΟ
DURING THE MONTH OF JULY. 22 AIRCRAFT WERE DIVERTED ADVERSE WEATHER. THUNDERSTORM WARNINGS WERE ISSUED ON JULY 5. 23. 24. 28 AND 29. FLOOD WARNING AND THE LANDSLIP WARNING WELL ISSUED ON JULY 18 AND 19.
A TOTAL OF SEVEN TROPICAL CYCLONES OCCURRED OVER THE WESTFEN NORTH PACIFIC AND THE SOUTH CHINA SEA DURING THE MONTH.
SIGNALS HOISTED DURING THE MONTH WERE AS FOLLOWS:
WEATHER SYSTEM
SIGNAL
DATE AND TIME OF HOISTING
DATE AND TIME OF LOWERING
SEVERE TROPICAL
STORM FAYE
1
JULY 9
3.50 PM
JULY 10
4 PM
TYPHOON GORDON
1
JULY 16
10 AM
3
JULY 17
4.45 AM
JULY 17 JULY 17
4.45 AM 5.30 PM
8 NE
JULY 17
5.30 PM
JULY 18
8 SE
3
JULY 18 JULY 18
3 AM
9.10 AM
JULY 18 JULY 18
3 AM 9.10 AM
2 PM
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:
TOTAL BRIGHT SUNSHINE
238.2 HOURS : 7.3 HOURS ABOVE
MEAN DAILY GLOBAL SOLAR RADIATION
TOTAL RAINFALL
MEAN AMOUNT OF CLOUD
MEAN RELATIVE HUMIDITY
MEAN DAILY MAXIMUM
AIR TEMPERATURE
NORMAL
18.51 MJ/SQ, METRE
:
0.78 MJ/SQ. METRE BELOW NORMAL
237.9 MM
78.9 MM BELOW NORMAL
63 PER CENT
3 PER CENT LESS THAN NORMAL
79 PER CENT
:
2 PER CENT LOWER
THAN NORMAL
31.4 DEGREES CELSIUS
:
0.2 DEGREE CELSIUS
BELOW NORMAL
/MAIN AIR