[robair]

Gday Steve /All

Interesting forecast following, the current synoptics are quite unusual thus resulting in the severe weather in Vic and South NSW and the protracted rain that occured today. I was surprised by Gazza's photos of the field, I did not think we had that much rain.
I am unsure about this forecast in regards to model flying tomorrow as the TAF today did not seem to entirely relate to what actually occured here at Toonie. I am going to post this TAF however would like to request the additional and totally learned input of Cpt Reitsma as to what he thinks will actually happen tomorrow. After all it's fathers day!!
Also..
Andrew, I'd like to work and learn from you in regards to getting a good weekend forecast system for the field, hope you are agreeable to this.

0937 UTC 04/09/10 AIRSERVICES AUSTRALIA
GENERAL MET MESSAGE BRIEFING



Prepared for: ROBFLIGHT

YSSY
IDN42901
AUSTRALIAN GOVERNMENT BUREAU OF METEOROLOGY
NEW SOUTH WALES

SYDNEY AIRPORT WEATHER BRIEFING
ISSUED AT 0558Z ON THE 04/09/2010 [1558 ON THE 04/09/2010 LOCAL]

SYDNEY TAF: (THIS TAF MAY NOT BE THE LATEST ISSUE)
TAF YSSY 040441Z 0406/0512
01020G30KT 9999 -RA FEW010 SCT025 BKN045
FM040900 33020G30KT 9999 -RA SCT025 BKN045
FM041400 31020KT 9999 SCT025 SCT045
FM042300 29020G30KT CAVOK
FM050900 25015KT CAVOK
INTER 0406/0412 6000 -RA BKN010
RMK FM040600 MOD TURB BLW 5000FT TILL042400
T 20 20 18 16 Q 1005 1005 1006 1006


TAF SUMMARY:
A DEEPENING LOW PRESSURE SYSTEM IS SITUATED IN BASS STRAIT AND WILL
MOVE TO THE SOUTHEAST TOMORROW. FRESH TO STRONG AND GUSTY
NORTHEASTERLY WINDS WILL TURN NORTHWESTERLY THIS EVENING AS THE LOW
CONTINUES EAST, THEN MORE WESTERLY TOMORROW BEFORE TURNING
SOUTHWESTERLY TOMORROW EVENING AS THE LOW MOVES INTO THE TASMAN. A
CLOUD BAND ASSOCIATED WITH THIS LOW IS PRODUCING THE LIGHT RAIN WHICH
WILL CLEAR OVERNIGHT, SOME PERIODS OF REDUCED VISIBILITY AND LOW
CLOUD CAN BE EXPECTED FROM THE RAIN. THE LOW HAS GENERATED
SIGNIFICANT WINDS ALOFT SO MODERATE TURBULENCE CAN BE EXPECTED AT
TIMES.

THUNDERSTORM POTENTIAL:
NIL CHANCE WITHIN 20NM OF SYDNEY AIRPORT.

OTHER POSSIBILITIES:
20% CHANCE THE WIND WILL NOT TEND NW (33020G30KT) UNTIL LATER THIS
EVENING, AROUND 12Z AND WITH GUSTS TO 45 KNOTS REQUIRING AIRPORT
WARNING.
20% CHANCE WIND REMAINS STRONG AND GUSTY ALL NIGHT.
+/- 2 HOURS ON TIMING OF SW CHANGE TOMORROW.

SYDNEY OUTLOOK:
MONDAY : MOSTLY SUNNY. CITY MAX: 19
TUESDAY : SHOWER OR TWO. CITY MAX: 18

CODE GREY:
NO.

REGARDS
CHRIS UNTIL 7PM, THEN RICHARD.

NOTES:
1. THIS BRIEFING IS NOT AMENDED BETWEEN ROUTINE ISSUES. FOR
OPERATIONAL PLANNING, REFERENCE SHOULD BE MADE TO THE LATEST TAF OR
TTF.