Day to Day Northern Territory

Greysrigging

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Darwin Airport

Darwin Airport 2020-2021 Wet Oct-April
Total = 1857.8mm
Mean = 1678.4mm
Median = 1548.7mm.
As with the Northern Suburbs, started well early, but the Monsoonal stuff buggered off in Feb, so finished with a whimper. That 35mm the other day saved April somewhat.
A pass mark, 180mm above average, particularly given the last two seasons.
 

wernerk

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Darwin Airport

Darwin Airport 2020-2021 Wet Oct-April
Total = 1857.8mm
Mean = 1678.4mm
Median = 1548.7mm.
As with the Northern Suburbs, started well early, but the Monsoonal stuff buggered off in Feb, so finished with a whimper. That 35mm the other day saved April somewhat.
A pass mark, 180mm above average, particularly given the last two seasons.
Always good to reach close to the mean (or median, depending on which you prefer to use).
Happy to oblige with the late April rain, haha!!
 

Greysrigging

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Yawn.....
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Greysrigging

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After a few decent 'dry season' type days and nights. the heat returned a bit today.
34.6c at the Airport was a shock to the system. I was out in the rural area at Southport giving a mate a hand with his jetty repairs on the Blackmore River. Lost a fair bit of sweat today and I note that the nearby Noonamah Airstrip made it to 35.8c today, so no wonder I have a sunburnt face and feel a bit dehydrated this afternoon.
PS. remedying aformentioned dehydration with beer atm....:)
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Greysrigging

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Unbelievably there was a nice dry season downpour in Darwin City yesterday afternoon. natuarally it missed all the official BOM gauges, although some private backyarders are reporting 20 -23mm. Not a drop at the Airport or the Northern Suburbs, was just a hot sweaty 'wet season' kind of day....in June ! last two days have been 33,3c/24.8c and 32c/24.2c. Oh and a DP of 24c at one point at the Airport is not what we wanna see in the Dry Season !
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stallie

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That said I remember Territory Day in Timber Creek in 1999 was rainy.... so much so that no-one let off their fireworks. The day itself was grey and overcast before steady but light rain came in the evening - not isolated downpours.
 
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wernerk

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Yep, Timber Creek had 10.4mm that day AND a top temp of only 16.9c ! Very wintery !!
I remember camping at Lee Point Caravan Park in mid August 1996 and there was a deluge in the middle of the night resulting in an inch of water running across the ground and a very soggy mattress in the tent as the floor was no longer waterproof. A new tent was procured after I got home!
 
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Greysrigging

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I remember camping at Lee Point Caravan Park in mid August 1996 and there was a deluge in the middle of the night resulting in an inch of water running across the ground and a very soggy mattress in the tent as the floor was no longer waterproof. A new tent was procured after I got home!
I looked up my old rain charts for August 1996 ( Leanyer, not too far from Lee Point ). I recorded 9mm that day. The Hospital in Tiwi got 20.5mm, so yep, I can well imagine the campsite being flooded out....haha.
 
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Greysrigging

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Typical ! 2 or 3 days of 'winter', before the weather reverts back to the 21st Century norms of 33c days in the middle of July. Since 1990, only 5 July's out of 31 have recorded a mean monthly temp below the long term average of 30.6c
1991 - 30.4c
1994 - 30.3c
2000 - 30.5c
2006 - 29.6c
2007 - 29.9c
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Hermon

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Alice Springs hit 30.4c today. Got close to the 1996 record of 31.4c.

Incidentally, winter 2021 feels a lot like winter 1996 so far (in Vic at least). Decent ski season that one...
 
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Claude Cat

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What's the haze situation up there?
We're positioning to capture some airborne imagery with haze in Darwin, as I understand it's usually pretty common this time of year.
 

Billy Bob

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I noticed that the Jabiru Airport webcam (not Darwin, I know) has smoke haze on the horizon this afternoon. You don't hear much about it, but smoke haze is probably more persistent in Darwin than Sydney.

 

Greysrigging

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Max temp peaked at 31.5c today. ( 12.30pm ). Some cloud has moved in as the temp is around 30c and DP of 22c, RH 65%. Bit of a shock after 5 dryish days above 33c. Today 'feels' more opressive.
My son flew down to Alice Springs this morning for a weeks work, They had extreme winter heat in the town yesterday, a max of 30,4c and a min of 18.3c. July averages are 19.9c/4.0c.
Only the 7th time since 1941 that the Airport has exceeded 30c in July. Record is 31.6c
 
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Greysrigging

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Bit of chit chat on local FB weather pages re the degree of crappiness this 'Dry'season compared to previous years.
This is my take looking at some stats.

"So, what is the difference between a 'good' dry and a 'bad' dry ?
Most of us probably use the old 'rule of thumb' number of mins below 20c. Yeah ?
Nah, I'm asleep at night so I don't think too much on the mins, its the days and months above the long term averages that puts a dampener ( no pun intended, not talking about unseasonal rain events ) on the 'dry'.
Consider this....
Airport mean max temps 1961-1990.
May 32.1c, June 30.6c, July 30.5c, August 31.3c
Airport mean max temps 1991-2020
May 32.3c, June 31.1c, July 31.1c, August 31.9c
Airport mean max temps 1941-2020
May 32.1c, June 30.7c, July 30.6c, August 31.4c
So yeah, dry season days have warmed somewhat.
Most of us can't remember what happened last year, let alone 10 years ago. So some figures back to 2010 for May-August.
2021 - 32.7, 31.8, 32.3 ( so far as of 16/7 )
2020 - 32.1, 32.4, 32.0, 32.6.
2019 - 32.3, 31.0, 31.3, 32.0.
2018 - 32.7, 31.6, 31.9, 32.0.
2017 - 32.9, 31.3, 32.6, 33.1.
2016 - 33,3, 33.2, 31.5, 32.6.
2015 - 32.6, 32.0, 31.3, 31.8.
2014 - 32.7, 31.2, 31.1, 31.9.
2013 - 32.7, 31.8, 31.5, 32.8.
2012 - 31.1, 29.7, 30.6, 31.5.
2011 - 30.8, 29.0, 31.2, 31.9.
2010 - 32.3, 31.1, 32.6, 32.8.
Airport mean max temps 2010-2021.
May 32.35c, June 31.34c, July 31.74c, August 32.18c
The figures show a clear warming trend in the these dry season months ( max temps ), especially in the last decade.
So only 4 dry season months out of 47 have recorded below av max temps since 2010, Two in May and two in June !
Another thing I looked at was July days above 33c. So yeah, July, our 'coldest' month.
1941 - 1950 = 11 July days +33c
1951 - 1960 = 7 July days +33c
1961 - 1970 = 13 July days +33c
1971 - 1980 = 24 July days +33c
1981 - 1990 = 16 July days +33c
1991 - 2000 = 17 July days +33c
2001 - 2010 = 30 July days +33c
2011 - 2021 + 54 July days +33c
1942 - 8 days ( 6 consecutive ) +33c
1975 - 9 days ( 6 consecutive ) +33c
1998 - 9 days +33c
2010 - 13 days ( 8 consecutive ) +33c
2016 - 8 days +33c
2017 - 13 days ( including 4 days above 34c ! ) +33c
2021 - 5 consecutive days +33c
Honourable mention to June and July 2020, with both months recording record max temps of 35c !
Bit of a long winded way to say it....yes, the 'Drys' are getting warmer !"
 
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Billy Bob

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Great analysis. Darwin is becoming an equatorial climate in terms of temps, without the year round rain chances that it should entail.

I think mins are important for overall comfort as well; they influence indoor temps as much if not more than max temps. Though probably less important in a tropical maritime climate like Darwin than a cool dry inland climate like Bungendore. A 15C/40C day is much more tolerable than a 25/40C day- and also more tolerable than the standard humid tropical 25/32 day in the wet.

One thing I have noticed with Darwin's dry is the increasing amount of +20C DP days. I think this is directly related to our cold fronts; weaker cold fronts mean weaker dry SE'ly surges for you up there. Without the influence from the south, more equatorial like conditions can take hold, especially since SSTs in the Timor Sea are hot year round. I am surprised the DP is still over 20C today...we had snow yesterday.
 
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Greysrigging

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Yearly rainfall, Darwin. Most people up our way quote the rainfall figures by the season, ie the 2020-2021 Wet Season and such.
I still like to see the calender year figures for comparison.
The driest year, 1946.
Capture.JPG 1946.JPG

And the wettest year 1998
Capture.JPG 1998.JPG

And a recent year without a drop of rain for 5 full calendar months ! Hard on the garden, hard on the water bill ! 2017.
Capture.JPG 2017.JPG
 

Greysrigging

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A tough winter's day in the VRD, Gregory and north eastern Kimberley's yesterday. While its been very cold in the south eastern states, The deep north of the Top End has experienced record breaking July heat with max temps climbing into the mid and high 30c's.
Victoria River Downs maxed out at 37.7c yesterday, a full 1.2c above their previous July record. Digitised data back to 1965.
Daly Waters also notched a record max of 36.2c, 0.4c above the previous July high. Records since 1939.
Other shorter term records may have been broken at Tindal and Ngukurr today with forecasts of 36c and 37c respectively.
 

Greysrigging

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Some record and near record heat accross the Top End yesterday, including Middle Point ( Darwin's Rural Area ), Batchelor, Tindal ( Katherine ). Kalumburu over on the north Kimberley coast cracked the old 100f mark with 38.1c, just 0.2c shy of the Australian July max temp record, which they also hold.
very large diurnals as well, cool/cold night and record heat not that common in the deep North.
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Australian records for July
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Greysrigging

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The record July heat continues accross the Top End.

From the BOM page.
Bureau of Meteorology
· "While below average temperatures and unsettled weather has been the theme for southern areas of Australia, record warm temperatures continue for central and northern areas.
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Heat is rebuilding across interior WA and this will spread east during the week. This round of heat may be more intense, reaching the mid-high-30s inland. This builds during today with maximums 8-10 °C above average over broad inland areas of NT/SA/WA. Temperatures will be within 1-2 °C of July records.
This heat will largely persist over for Central Australia, shifting slightly east into western Queensland, with no large high to flush out the warm air. Record temperatures may be set on Thursday and Friday over corner country. Forecast maximums getting up to 35 °C just east of Alice Springs – remarkable for July."

Meanwhile, Alice Springs topped 30c for the second time this July....and only the 8th time the mercury has climbed to the 30c mark since records began in 1941. 30th and 31st max temps forecast 32c and 33c !
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An honourable mention Jabiru.
The record breaking July heatwave continues across the Top End of the Northern Territory. Jabiru, the former service town for Ranger Uranium Mine ( within Kakadu National Park ) has a series of 37c max temps forecast to end the month. The site is running at 2.1c and 1.7c above the July mean max and min temps. Also running 0.4c above the previous July monthly record of 33.8c set in 2017. Site has data back to 1971.
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Greysrigging

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A large swathe of Northern and Central Australia have set or will set new max temp heat records for July. See list below.
Kununurra, WA ( record 35.5c ) Forecast last 3 days of July - 37c, 37c, 37c.
Wyndham, WA ( 37.2c ) - 37c, 37c, 36c.
Jabiru, NT ( 36.2c ) - 37c, 37c, 37c.
Humpty Doo, NT ( 36.1c ) - 36c, 36c, 36c.
Katherine, NT ( 35.8c ) - 36c, 36c, 36c.
V R D, NT ( 36.5c ) - 36c, 36c, 37c.
Lajamanu, NT ( 34.7c ) - 35c, 35c, 35c.
Wave Hill, NT ( 36.0c ) - 36c, 36c, 37c.
Tennant Creek, NT ( 34.7c ) - 34c, 35c, 35c.
Alice Springs, NT ( 31.6c ) - 30c, 32c, 33c.
Birdsville, QLD ( 32.9c ) - 26c, 34c, 34c.
Tiboorburra, NSW ( 29.8c ) - 19c, 27c, 30c.
Bourke, NSW ( 29.2c ) - 19c, 22c, 31c.
 

Greysrigging

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Alice Springs has set a new July max temp today, 31.8c ( previous record 31.6c )
Wyndham recorded another 38.1c ( same as yesterday ) a new July record..
Tennant Creek, Tindal, Jabiru ( 37c is 0.8c above the previous July record ). There will be quite a few others too out in the VRD region too I'd say.
Oh and Birdsville too, with a 33.7c.
Last day of the month will see some more records broken accross Northen Australia.
 

Greysrigging

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Cracked 35c today as per the BOM forecast.
The second one for 2021 after a 35.9c back in April.
Also the first time this early in August to ever hit 35C. The next earliest is 35.1C on the 14th which occurred back in 1969.
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Greysrigging

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Rain, glorious rain ! The first of the season. Some PWS out in Palmerston and Howard Springs are reporting over 2" ( 50mm ) in several showers from mid afternoon and overnight.
Darwin Airport scored a very nice drop of 19mm. My gauge in Leanyer Heights ( Northern Suburbs ) only 12mm, but August rain ? Hell yeah, I'll take it !
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And, would you believe, there is a Total Fire Ban for Darwin and Adelaide River Districts as a dry surge pushes in today, clearing the showers away with gusty south easterlies and a forecast top temp of 34c.
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Greysrigging

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Our 3rd consecutive +35c temp at the Airport.
How good is it when the sea breeze kicks in ?
Here's what it looked like at the Airport
Darwin and District Obs for today, and yesterday and todays half hourly observations at the Airport. The DP's very low during the peak max temp, then the sea breeze kicks in, raising the DP's and humidity.
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Greysrigging

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Some record breaking heat to end the month of August right accross the Top End. 38c's and 39c's in the forecast out Kakadu way.
And some high diurnals down at Daly Waters.....
Capture.JPG
 
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Greysrigging

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Darwin Airport ( 1941-2021 ) 12.4239°S 130.8925°E 30m AMSL.

August was another well above month for max temps, min temps and rainfall. the 19.2mm at the Airport was the wettest August since 1988 when 51.2mm fell.
The mean max for the month, 33.4c, is a full 2c above the long term averages ( since 1941 ) and 0.3c above the previous record set in 2017.
The mean min temp of 21.5c is 1.2c above the the long term averages.
Only 4 overnights dipped below 20c, the lowest number of such mornings since 1992. ( Average is 13 August mornings per year below 20c )
And, for the second year in a row, Darwin recorded 5 +35c days in August 2021. Up until 2019, there had only been 14 +35c August days since 1941. The total is now 24, after 5 such August days in 2020 and 5 such August days in 2021.
Bring On The Build Up !
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Billy Bob

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I wonder if other tropical cities are smashing temperature records as consistently as Darwin. It's sad when records like this- once alarming for the tropics- are now ho-hum.

Since there is little variability in tropical weather during the dry season, you're stuck in a perpetual loop of above average temperatures. Coastal NSW can suffer this during late summer and early autumn too, when cold front activity is at its minimum and sea surface temperatures are high.
 

Greysrigging

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2nd warmest Sept day at the Airport, topped 37.5c ( record 37,7 in 1983 ). I would suggest that most people would'nt pick today as an extreme heat day here in the 'Burbs. Humidity and DP's very low most of the day.
So here are the Obs when the sea breeze kicked in, dropping the max temp by 6/7c and dramatically raising the humidity and DP.
I have started to sweat for the first time today.
Capture.JPG 1o.JPG
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Greysrigging

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Not that I've really taken much notice in the past, but neg DP's at Darwin Airport during this afternoon's heat ! ( max temp of 35.8c ) Didn't think such things were possible....
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Greysrigging

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Darwin Airport Sept rainfall slightly above average. Both max and min temps also above average, in fact its been the hottest Sept ( max temps ) since records began in 1941.
Capture.JPG
 
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Greysrigging

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Darwin Airport ( 1941-2021 ) 12.4239°S 130.8925°E 30m AMSL.

The warming trend continues......September was another well above average month for both max and min temps. In fact the mean max of 34.1c was the highest since records began in 1941. The previous record of 34.0c was set in 2017. There was also a new record max of 38.0c, exceeding the previous record of 37.7c in 1983. Min temps were 1.0c above average at 24.0c.
Rainfall at the Airport came in at 26.2mm falling on 3 days, exceeding the average of 16.5mm. September is still a dry season month, the median ( ie what one can expect ) is only 6.4mm. Suburbs closer to the City did much better, with a guage at the Botanical Gardens recording 38.1mm. Meanwhile my home PWS only recorded 7.8mm for the month, pretty well what we expect in the Desierto de Leanyer in the early 'build up' months. Inland regions of Darwin generally do a bit better with the early storms.

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Greysrigging

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The 29.8c recorded at the Airport yesterday was the coolest day since the 4th July ( 29.0c ) and the previous sub 30c to that was on April 4th ( 29.3c )
Sub 30c days in October are as rare as rocking horse poo, yesterdays was only the 3rd this century, the previous ones were a 26.7c in 2016 and the all time low record ( and throughout the Top End ) of 24.7c in 2000.
In total, there have been 21 sub 30c October days since records began in 1941
2021 - 1
2016 - 1
2000 - 1
1996 - 1
1995 - 1
1981 - 1
1980 - 1
1975 - 2
1969 - 1
1958 - 1
1954 - 2
1950 - 2
1947 - 1
1945 - 2
1941 - 3
And as an aside, we have had some torrid overnight temps in the last few days, up around 27/28c. Howerver the dreaded ( for stats nerds) 9.00am reset has kicked in, so atm the last two overnights will be sub 24c.
For those who may not realise, max and min temps are recorded over a 24 hour period 9.00am to 9.00am, so this mornings 27c is not the lowest for the 24 hour period, it will be the 23.9c after 9.00am yesterday morning. Same as the previous day, with the 28c overnight dropping to 23.8c just before 9.00am with the passage of the storm. Curse you 9.00am reset !
 

Greysrigging

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Darwin forecast for the next 7 days....
Do I need to troll the August/Sept/Oct predictions of an early and bountiful 'build up' and repeat them here, or will the peddlers of such myths man up and 'fess up to 'fake news' ?
ps/- you know who youse are.....:rolleyes:
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