October Fest (Weather Style) 2012

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Re: October Fest (Weather Style) 2012

Postby @weather_wa » Wed Oct 31, 2012 1:50 pm

Forecast for the rest of Wednesday

Image

Summary

Max 21
Light rain, thunderstorm risk.
Chance of any rain: 90% Image
Rainfall amount: 3 to 6 mm

Perth area

Becoming cloudy. Areas of rain and the chance of a thunderstorm. Winds easterly 25 to 30 km/h.

Fire Danger
Perth Coastal Plain: Low-Moderate
Perth Hills: Low-Moderate

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Re: October Fest (Weather Style) 2012

Postby i.like.weather » Wed Oct 31, 2012 4:51 pm

NO action what so ever

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Re: October Fest (Weather Style) 2012

Postby Pete » Wed Oct 31, 2012 5:19 pm

Once that trough becomes more dominant near the west coast, then things will get going. Other than that, they'll be random, isolated cells apart from that stuff in the eastern wheatbelt and goldfields area.

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Re: October Fest (Weather Style) 2012

Postby @weather_wa » Wed Oct 31, 2012 5:57 pm

The radar is showing a rocket is heading for Rockingham! Image

Image

There's Lots of lightning in the Goldfields and central WA:

Image

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Re: October Fest (Weather Style) 2012

Postby Rusted From the Rain » Wed Oct 31, 2012 8:24 pm

So far BOM has been pretty far off today, areas of rain and thunderstorms forecast, but I guess that's weather for you. Hopefully tomorrow afternoon comes off, good instability just north of Perth throughout the afternoon, south east steering winds once again. Western Wheatbelt mid-late afternoon looking okay

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Re: October Fest (Weather Style) 2012

Postby @weather_wa » Wed Oct 31, 2012 8:32 pm

They said on the news weather forecast that the storms are most likely to occur before sunrise.

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Re: October Fest (Weather Style) 2012

Postby Fu Manchu » Wed Oct 31, 2012 9:07 pm

EOS wrote:
Forecast for the rest of Wednesday

Image

Summary

Max 21
Light rain, thunderstorm risk.
Chance of any rain: 90% Image
Rainfall amount: 3 to 6 mm

Perth area

Becoming cloudy. Areas of rain and the chance of a thunderstorm. Winds easterly 25 to 30 km/h.

Fire Danger
Perth Coastal Plain: Low-Moderate
Perth Hills: Low-Moderate


You should be doing the graphics for BoM. I think you'd come up with icons that reflect the weather a little better :)

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Re: October Fest (Weather Style) 2012

Postby Pete » Wed Oct 31, 2012 9:23 pm

Lightning on the tracker between Perth and Jurien Bay

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Re: October Fest (Weather Style) 2012

Postby Fu Manchu » Wed Oct 31, 2012 9:27 pm

Pete wrote:Lightning on the tracker between Perth and Jurien Bay

Thanks for the heads up Pete :mrgreen:

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Re: October Fest (Weather Style) 2012

Postby Fu Manchu » Wed Oct 31, 2012 9:32 pm

A farmer by the name of Ropey says he can see lightning NE of Kataning

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Re: October Fest (Weather Style) 2012

Postby supersmell » Wed Oct 31, 2012 9:42 pm

getting sum decent gusts here

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Re: October Fest (Weather Style) 2012

Postby @weather_wa » Wed Oct 31, 2012 9:45 pm

Pete wrote:Lightning on the tracker between Perth and Jurien Bay


Image

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Re: October Fest (Weather Style) 2012

Postby @weather_wa » Wed Oct 31, 2012 9:45 pm

supersmell wrote:getting sum decent gusts here


Windy here too!

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Re: October Fest (Weather Style) 2012

Postby Rusted From the Rain » Wed Oct 31, 2012 10:02 pm

EOS wrote:
Pete wrote:Lightning on the tracker between Perth and Jurien Bay


Image

Spot on with the models on bsch, but later. Tracker going off but the radar isn't picking up much in terms of intensity.

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Re: October Fest (Weather Style) 2012

Postby Haydn Jones » Wed Oct 31, 2012 10:48 pm

more cloud movement today
https://vimeo.com/52546992

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Re: October Fest (Weather Style) 2012

Postby @weather_wa » Sun Nov 04, 2012 9:50 pm

Perth in October 2012: A hot and dry month:

http://www.bom.gov.au/climate/current/m ... erth.shtml

Rainfall: very much below average

Maximum temperature: highest on record at a number of sites

Minimum temperature: above average

Details Extremes Records Summaries Important notes the top
Rainfall

Rainfall across the Perth metropolitan area during October 2012 was very much below average, with monthly rainfall totals generally in the 10 mm to 20 mm range, grading to close to 40 mm in the Perth hills.

A cold front crossed the Perth region early on the 3rd, with showers developing ahead of the front late on the 2nd and persisting into early on the 4th, although daily rainfall totals were generally light. A weak low moved across southwest WA on the 7th, resulting in generally light showers across the Perth region, and a cold front moved across southwest WA on the 13th, resulting in showers across the Perth region which persisted in the westerly flow following the front through to the morning of the 15th. Jarrahdale recorded the highest daily rainfall in the Perth metropolitan area for October 2012 during this event with 14.2 mm on the 14th. Another cold front crossed southwest WA on the 22nd resulting in generally light falls across Perth. Showers and thunderstorms moved over Perth from the north during the late morning and early afternoon on the 29th, associated with northerly winds, a hot morning, and a surface trough. Recorded rainfall totals were light however. Light showers were also observed over Perth from the afternoon of the 30th and into the 31st as cloudband moved over the region.

Perth Metro recorded 15.6 mm of rainfall on 6 rain days in October 2012, well below the long term October average of 52.3 mm on 8.8 rain days, and the 10th driest October at Perth Metro in 136 years of record. The wettest day during the month was the 4.4 mm in the 24 hours to 9am on the 14th. Historically, October rainfall in Perth has ranged from 1.0 mm in 1969 to 199.9 mm in 1890, while last October (2011), Perth Metro recorded 64.2 mm on 9 rain days.

The total rainfall for the 2012 year to date (January to October) at Perth Metro is 529.8 mm on 88 rain days, which is the equal 6th driest such period, equal with the 529.8 mm on 100 rain days in 1979. The average rainfall for the January to October period is 814.6 mm on 98.7 rain days, while the driest is 445.4 mm on 87 rain days in 2006.
Maximum temperature

Mean maximum temperatures in October 2012 were very much above average across the Perth region, with a number of sites observing their hottest October on record. Most sites recorded mean maxima between 2 °C and 3 °C above their October average.

October 2012 began with a very warm day across Perth, with temperatures in the low to mid-thirties in warm northerly winds ahead of a trough, and coastal and island sites recorded their hottest day of the month on the 1st. The trough moved inland on the 2nd, with temperatures dropping to the mid-twenties across Perth, before a cold front on the 3rd reduced temperatures further, and all sites observed their coolest day for the month on the 4th in the cold airmass behind the front, with temperatures in the mid-to-high teens. Warm conditions returned to the Perth area on the 10th and 11th with temperatures increasing to the high twenties and low thirties ahead of a cold front, and a similar pattern occured on the 20th and 21st. Maximum temperatures gradually rose from the 23rd to 26th before a hot weekend was observed on the 27th and 28th as temperatures reached the low to mid-thirties due to a deepening trough near the west coast. Conditions were particularly hot during the morning of the 28th, with most locations away from the coast on the coastal plain exceeding 36 °C, before temperatures moderated in the late morning and early afternoon as showers and thunderstorms moved over Perth from the north and the trough moved eastward. All sites away from the coast recorded their highest maximum for October 2012 in the morning on the 28th, with the highest in the metropolitan region being 36.5 °C at Gosnells City.

Perth Metro's mean daily maximum temperature in October was 25.0 °C, which was the 2nd warmest October in 116 years of record, only behind a mean maximum 25.8 °C registered in 1969. The average for October at Perth Metro is 23.1 °C. In terms of mean maximum temperature, six out of the eight warmest Octobers on record at Perth Metro have occurred since 2000 (Perth Metro's warmest Octobers were 1969, 2012, 2010, 2011, 1914, 2006, 2000 and 2008 in descending order). Last October (2011), Perth Metro experienced its 4th warmest October on record with 24.5 °C.

Daily maxima at Perth Metro ranged from a hot 36.2 °C on the 28th, the equal 8th hottest October day on record at Perth Metro, to a mild 19.2 °C on the 4th, the only sub-20 °C day during October 2012. Perth Metro has now recorded only one sub-20 °C day in both October 2012 and 2011, when previous to 2011 the lowest was two sub-20 °C days in 2010 and in 1969. The maximum temperature of 34.3 °C on the 1st was the earliest instance of a temperature of 34 °C or higher in spring since records commenced in 1897, with the previous records being 34.1 °C and 34.0 °C recorded on 12 October in 1968 and 1991 respectively. Perth Metro’s hottest day on record in October is 37.3 °C on 29 October 1967.

Perth Metro's mean daily maximum temperature for the 2012 year to date (January to October) is 25.1 °C, and is the 2nd warmest on record behind a January to October mean maximum of 25.2 °C observed in 2011. The average for the January to October period is 24.0 °C. Perth Metro has also seen a particularly warm two month period, with the September and October mean daily maximum temperature of 23.3 °C the warmest on record, breaking 23.2 °C set in 2010. The average for the September to October period is 21.6 °C.
Minimum temperature

Mean minimum temperatures in October 2012 were above average at most sites in the Perth, with mean minima generally between 11 °C and 14 °C, and mostly 1.0 °C to 1.5 °C above average.

After a mild start to the month in terms of overnight temperatures in the Perth area, where temperatures were mostly in the low to mid-teens, generally cool conditions were observed from the 4th to 8th, particularly on the morning of the 5th when most sites observed their lowest minimum temperature for the month. Jandakot observed the lowest temperature for October 2012 in the Perth area with 4.4 °C on the 5th. Warm overnight temperatures were observed from the 11th to 14th, with a trough located near the west coast and most sites observing their warmest night of the month during this period. Cool nights on the 16th, 18th and 23rd were interspersed with mild nights on the 17th and 22nd; while, warm overnight conditions returned to Perth on the 27th to 29th as a trough deepened near the west coast.

Perth Metro's mean daily minimum temperature in October 2012 was 12.5 °C, above the average of 11.3 °C. Daily minima ranged from a cool 8.5 °C on the 5th to a warm 18.4 °C on the 13th.
Sunshine

The mean daily sunshine hours for October was 9.8 hours which is close to the average of 9.6 hours.

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