XN000022-1991-10-13 — Page 6

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SUNDAY, OCTOBER 13, 1991

THE FINE THEME WAS ONLY MOMENTARILY INTERRUPTED BY SOME CLOUDY INTERLUDES AND OCCASIONAL RAIN CHURNED UP BY SHORT BURST OF WEAK

NORTHEAST MONSOON SURGES.

AMONG SUCH RAINY EPISODES, THE MOST SIGNIFICANT THE AFTERNOON AND EVENING OF SEPTEMBER 25.

OCCURRED ON

A FURTHER REPLENISHMENT OF THE NORTHEAST MONSOON ARRIVED LÅTER ON SEPTEMBER 27 AND BROUGHT. CLOUDIER WEATHER FOR THE NEXT COUPLE OF DAYS.

HOWEVER, WHILE THE WINDS CONTINURD то INCREASE AND BECAME STRONG BY SEPTEMBER 29, THE RAIN WAS MOSTLY LIGHT DURING THE PERIOD. ONCE THE WINDS SUBSIDED, SUNNY PERIODS RETURNED ON THE LAST DAY OF THE MONTH.

THERE WERE SEVEN AIRCRAFT DIVERSIONS DUE TO INCLEMENT WEATHER IN SEPTEMBER. THUNDERSTORM WARNINGS WERE ISSUED ON SEPTEMBER 4. 12, 14 AND 15. FLOOD WARNINGS WERE IN EFFECT ON SEPTEMBER 12, 14 AND 15.

SIGNALS HOISTED DURING THE MONTH WERE AS FOLLOWS:

WEATHER SYSTEM

SIGNAL

DATE AND TIME OF HOISTING

DATE AND TIME OF LOWERING

JOEL

1

3

SEPT 3 9.45 PM SEPT 4

10.30 PM

SEPT 4 SEPT 7

10.30 PM

9.30 AM

NAT

1

SEPT 16

7.30 PM

SEPT 18

11.15 AM

NAT

1

SEPT 23

1.30 PM

SEPT 25

2.30 PM

WINTER

STRONG

MONSOON

MONSOON

SEPT 29

3.15 AM

SEPT 29

1.45 PM

NAT

1

SEPT 29

9.45 PM

SEPT 30

10.40 PM

THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:

TOTAL BRIGHT SUNSHINE

MEAN DAILY GLOBAL SOLAR RADIATION

TOTAL RAINFALL

MEAN AMOUNT OF CLOUD

MEAN RELATIVE HUMIDITY

160.3 HOURS ;

21.4 HOURS BELOW NORMAL

14.34 MJ/SQ M ;

2.15 MJ/SQ M BELOW NORMAL

178.7 MM;

121.0 MM BELOW NORMAL

58 PER CENT ;

5 PER CENT LESS THAN NORMAL

75 PER CENT

3 PER CENT LOWER THAN NORMAL

/MEAN DAILY