MONDAY, APRIL 14, 1975.
MARCH 1975 WEATHER ROUND UP
*****
HONGKONG EXPERIENCED A WARMER AND CLOUDIER MARCH THAN USUAL, WITH ONLY 43.6 HOURS OF SUNSHINE. THIS WAS THE 8TH LOWEST ON RECORD FOR MARCH AND WAS 51.1 HOURS BELOW NORMAL.
THERE WERE ONLY FOUR DAYS LAST MONTH WITH NO RAINFALL RECORDED, BUT THE MONTHLY TOTAL RAINFALL ONLY EXCEEDED THE AVERAGE BY 13 PER CENT.
THE CLOUDY AND DULL WEATHER WAS A RESULT OF A WARM AND MOIST AIRSTREAM WHICH WAS ASSOCIATED WITH AN ANTICYCLONE CENTRED OVER EAST CHINA AND THE NEIGHBOURING SEAS.
MIST AND FOG OCCURRED QUITE OFTEN DUE TO THE HIGH RELATIVE HUMIDITY AND LIGHT WINDS. THE VISIBILITY AT KAITAK AIRPORT AND WAGLAN ISLAND REDUCED TO 600 AND 200 METRES RESPECTIVELY ON THE EVENING OF MARCH 5. FIVE AIRCRAFT WERE DIVERTED FROM HONG KONG DUE TO ADVERSE WEATHER CONDITIONS.
THE THUNDERSTORM AND HEAVY RAIN WARNING WAS ISSUED ON MARCH 4 AND THE YELLOW FIRE DANGER WARNING WAS ENFORCED ON DRIER DAYSON MARCH 17 - 18 AND MARCH 24 25.
THE MAXIMUM TEMPERATURE OF 26.3 DEGREES CELSIUS WAS RECORDED ON MARCH 23, AND THE MINIMUM TEMPERATURE OF 11.5 DEGREES CELSIUS WAS RECORDED ON MARCH 15 AFTER A RAINY NIGHT.
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE 1-
SUNSHINE
CLOUD INESS
RA INFALL
43.6 HOURS 81.5 MM 91 %
RELATIVE HUMIDITY
83%
MEAN MAXIMUM TEMPERATURE
MEAN TEMPERATURE
18.5 C
MEAN MINIMUM TEMPERATURE
16.9. C
MEAN DEW POINT
15.5 C
TOTAL EVAPORATION
75.0 MM
20.7 C
51.1 HOURS BELOW NORMAL - 9.3 MM ABOVE NORMAL
- 9% ABOVE NORMAL
- NORMAL
-0.8 C ABOVE NORMAL - 1.0 C ABOVE NORMAL - 1.3 C ABOVE NORMAL - 0.7 C ABOVE NORMAL
39.8 MM BELOW NORMAL
0
13.