Since we're talking about a Sydney summer, this must have been an extremely regular occurrence!Used to hate these weekends when I did surf live saving patrols. Cold, wet and windy all day with nothing to do and the bastard duty lifeguard wouldn't close the beach so we could go home.
Looking at the models, I think that it’s more a matter of brief warm spells breaking up the Southerlies, with the warm days being cloudy and humid like Wednesday and Thursday.…Looks like we'll start to see a warm and humid period begin from Dec 2, but will see southerlies break up spells of warmth potentially more regularly than we are used to. No 35+ degree day on the horizon at this point though, even in Penrith.
Yh a bit of divergence between GFS and EC what a spell of long-fetch easterlies, looking like it's going to be many cloudy days ahead.Looking at the models, I think that it’s more a matter of brief warm spells breaking up the Southerlies, with the warm days being cloudy and humid like Wednesday and Thursday.
EDIT: the main cloud band and rain had passed by lunch time, it even brightened up with the Sun attempting to break through. Another rain band passed over late this afternoon. Now it’s cold, cloudy and windy with persistent, annoying light rain / drizzle.
AXS-C places 100mm of Rain for Canberra area from now upto tomorrow at 11pm.Canberra has had its wettest November on record with 147.8mm to date (around one quarter of our average annual rainfall), and probably the coldest. I can’t remember consistently turning on the heating before at this time of the year. NEWSFLASH - there was a glimpse of the sun today
Ridiculous. Less extreme but something I noted - Obs Hill had 3 days over 28C in September but only one this month.Side note for a bit of perspective: July had a warmer max temp for the month than November will (26.1 vs 24.7 at Bellambi Pt).
Yeah I drove Wollongong to Frenchs Forest and back. Was wet over at the nearly NBsFor the last few hours I have had mizzle here with the occasional heavier burst of drizzle.
All under a dull, slate grey, featureless overcast sky and a light sou-easter.
This is some depressingly bleak shite.
With November now finishing up, I have recorded the final averages for weather stations in Sydney, Canberra and Bathurst as well as Alice Springs (central Aus), and Marble Bar (Northwest Aus) to show how widespread and significant the negative anomalies has been. Northeast Aus, Southwest Aus and Southern Aus also had impressive negative anomalies but not as significant...
It's even more significant since being November because all those other months have much shorter daylight hours, so I wonder if it was measured in "potential sunshine hours" whether this month would come on top for least percentage of sunshine out of any month on record or at least since 1990.In fact since 1990, just 11 out of 383 months calendar months have averaged less than 5 hours of sunshine. Half those months were Junes, and the rest were either March, April, May or July. Nov 2021 is now number 12, the first month in the second half of the year to achieve this.
Actually that's an interesting way to think about it. The theoretical maximum sunshine for May/Jun/Jul is 10 hours, and for Nov/Dec/Jan it's just above 13 hours.It's even more significant since being November because all those other months have much shorter daylight hours, so I wonder if it was measured in "potential sunshine hours" whether this month would come on top for least percentage of sunshine out of any month on record or at least since 1990.
Yeah the illawarra started showery.Partly cloudy here with some lengthy periods of sunshine and a light to moderate NE'er. I think that Sydney's East is under a hole in the clouds - maybe the sea breeze causes it? Sydney's West still looks to be under cloud. It's about 24-26 degrees across Sydney. certainly an improvement on recent days.
The models show troughs alternating with SE'ers for the foreseeable future.
EDIT: scattered storm cells have developed between Goulburn and Oberon, more more activity over the Southern Tablelands and Snowys.
Biggest surprise out of that list is Jan 2020 being =3rd lowest month for sunshine, and Dec 2019 not being on the list at all for potential sunshine given there was only a few mm of rain that month.Actually that's an interesting way to think about it. The theoretical maximum sunshine for May/Jun/Jul is 10 hours, and for Nov/Dec/Jan it's just above 13 hours.
Based on percent of maximum sunshine, Nov 2021 is the lowest on record and also the first calendar month since 1990 with below 40% of maximum sunshine hours.
Lowest sunshine months
1. Nov 2021 - 38%
2. Mar 2017, Jun 2013 - 40%
3. Jan 2020, Mar 2000 - 41%
4. Dec 2020, Feb 2002, Jun 1998, Nov 1995, Feb 1992, Apr 1990 - 42%
Dec 2011 actually had 50% of maximum sunshine, and Nov 1999 had 64%! This surprised me a lot.
Highest sunshine months
The sunniest months by percent maximum sunshine are mainly Jul-Sep.
1. Aug 1991 - 90%
2. Jul 2018 - 86%
3. Apr 2006, Aug 1995 - 85%
4. Jul 2013, Sep 1994 - 83%
Since 1990 there have been only 14 calendar months with above 80% sunshine, and only one year has had more than 1 month above 80% - 2017 had 3 of those months - Jul, Aug and Sep.