Elly Spark
Hi Synopticians,
Today,
as has become quite common in recent times, we have had another day
with gale force winds in the Sydney/Ilawarra region. However, today,
unlike previously, these surface gales have NOT been accompanied by
50/60
knots gradient winds.
I attach
.gif copies of the sydney and
shane
park profiler winds for this afternoon - hopefully john mcbride
can put these on his web site. Winds aloft are no more than 35/40
knots with winds at 2000ft generally
W/SW
20/25 knots.
Why then surface winds of W 35 knots gusting 41 knots or more?
For example for Sydney:
SPECIAWS
YSSY 0330Z 26030G41KT CAVOK 16.0/M04.8 Q1011.9 RMK
RF00.0/000.0
CLD:CLR BLW 125 VIS:9999
TTF:FM0300
MOD TURB BLW 5000FT
SPECIAWS
YSSY 0300Z 27035G40KT CAVOK 17.0/M04.0 Q1011.4 RMK
RF00.0/000.0
CLD:SCT072 VIS:9999
TTF:FM0300
25030G40KT CAVOK
FM0300
MOD TURB BLW 5000FT
SPECIAWS
YSSY 0230Z 27030G41KT CAVOK 16.7/M03.1 Q1011.4 RMK
RF00.0/000.0
CLD:CLR BLW 125 VIS:9999
TTF:FM0230
MOD TURB BLW 5000FT
SPECIAWS
YSSY 0200Z 26030G41KT CAVOK 16.5/M01.2 Q1011.0 RMK
RF00.0/000.0
CLD:CLR BLW 125 VIS:9999
TTF:FM0200
24025G39KT CAVOK
FM0200
MOD TURB BLW 5000FT
SPECIAWS
YSSY 0130Z 25028G38KT CAVOK 16.8/M02.1 Q1011.2 RMK
RF00.0/000.0
CLD:CLR BLW 125 VIS:9999
TTF:FM0130
24025G39KT CAVOK
and
for Richmond
SPECIAWS
YSRI 0351Z 26023G31KT //// 16.3/M02.2 Q1012.7 RMK
RF00.0/000.0
CLD:CLR BLW 125 VIS:9999 BV:13.4 IT:27.7
SPECIAWS
YSRI 0331Z 25031G42KT //// 16.5/M03.5 Q1012.7 RMK
RF00.0/000.0
CLD:SCT077 VIS:9999 BV:13.4 IT:28.0
SPECIAWS
YSRI 0322Z 26036G44KT //// 16.6/M05.8 Q1012.3 RMK
RF00.0/000.0
CLD:SCT077 VIS:9999 BV:13.4 IT:28.0
SPECIAWS
YSRI 0321Z 25025G44KT //// 16.8/M05.6 Q1012.4 RMK
RF00.0/000.0
CLD:SCT077 VIS:9999 BV:13.4 IT:28.0
SPECIAWS
YSRI 0318Z 25022G32KT //// 17.1/M02.0 Q1012.6 RMK
RF00.0/000.0
CLD:SCT077 VIS:9999 BV:13.4 IT:28.0
METARAWS
YSRI 0300Z 26022G30KT //// 17.1/M02.0 Q1012.6 RMK
RF00.0/000.0
CLD:CLR BLW 125 VIS:9999 BV:13.4 IT:27.8
WE
generally explain similar winds on the Illawarra by mountain waves,
but
if this is what is causing it in Sydney this afternoon, I would have
expected
to see some evidence on this on the profiler. It appears as
though
all the gales are below 1000ft!
There
is a little low formong in the tasman to the east of Gabo island.
cheers
Elly
