SUNDAY, JULY 9, 1989
DURING THE MONTH OF JUNE, NO AIRCRAFT WAS DIVERTED DUR ΤΟ ADVERSE WEATHER. THUNDERSTORM WARNINGS WERE ISSUED ON JUNE 6, 10, 11, 12, 20, 23, 26, 27 AND 28.
APART FROM TYPHOON DOT, ANOTHER TROPICAL CYCLONE, ELLIS, ALSO OCCURRED OVER THE WESTERN 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
TYPHOON DOT
1
JUNE 8, 3 PM
JUNE 9, 7 PM
JUNE 9, 7 PM
JUNE 10, 12.15 PM
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:
TOTAL BRICHT SUNSHINE
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
TOTAL EVAPORATION
179.2 HOURS ; 20.0 HOURS ABOVE NORMAL
15.71;
MJ/SQUARE METRES
137.5 MM;
77 PER CENT ;
83 PER CENT;
29.7 DEGREES ; CELSIUS
27.5 DEGREES : CELSIUS
26.0 DEGREES ; CELSIUS
24.3 DEGREES ; CELSIUS
122.0 MM ;
0.98 MJ/8QUARE METRES BELOW NORMAL
294.3 MM BELOW NORMAL
2 PER CENT MORE THAN NORMAL
1 PER CENT LOWER THAN NORMAL
0.7 DEGREE CELSIUS BELOW NORMAL
0.2 DEGREE CELSIUS BELOW NORMAL
0.4 DEGREE CELSIUS ABOVE NORMAL
0.2 DEGREE CELSIUS BELOW NORMAL
25.7 MM BELOW NORMAL
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