Explanatory notes:
Scroll down below this section for forecast.
Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 06 UTC(2 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).
As predicted maximum temperature occurred before noon on Friday which was also the first day of lunar new year with the sea breeze as the west coast trough moved inland and cloud cover ahead of an upper/middle level trough/disturbance limiting temperatures during the afternoon.
Strong gusty easterlies occurred over the hills and foothills during the early hours with the west coast trough offshore.Wind gusts reached 82 km/h at Gooseberry Hills!
A cloudband of middle and high level clouds lied over the region from afternoon with some elevated showers,though much the precipitation was virga.
Marine layer clouds likely on Saturday with the very slight chance of drizzle during the early hours and morning.The chance of showers over northeastern areas during the early hours from the cloudband.
The west coast trough remains inland during the weekend resulting in mild conditions.
Some marine layer clouds expected on Sunday too.
On Monday with the west coast trough inland,southerly pressure gradient "bends" with solar heating leading to strong sea breezes during the afternoon and evening.Wind gusts up to 60 km/h possible the afternoon and evening over coastal and riverside suburbs.
The synoptic conditions next week depends on a tropical weather system expected to lie over the northern part of the State.Large uncertainty with wide variation between ensemble members.
Currently it looks like a somewhat eats-southeasterly pressure gradient throughout much of next week after Monday,possible sea breezes in the afternoon and evening as the pressure gradient "bends" with solar heating but as previously discussed plenty of uncertainty.
The long spell with no 40+ Degree Days continues with the last 40+ Degree Day being Australia Day last year!With no 40+ Degree day within the forecast period,the next 40+ Degree Day will be at least the latest on record during summer for the Perth Metro station or if there is no 40+ Degree Day at all this summer the first since the 2001-2002 summer.
Saturday February 17:
Perth metropolitan area:
City:
19-27 Degrees Celsius
Partly cloudy.
Chance of any rain:10%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.A slight(20%) chance of showers in the northeast in the early hours.The very slight chance of drizzle in the early hours and morning.Light winds becoming southwesterly at 15-25 km/h from around the middle of the day easing to 5-15 km/h at night.
Perth metropolitan area:
Sunday February 18:
City:
18-28 Degrees Celsius
Partly cloudy.
Chance of any rain:5%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.Light winds becoming southwesterly at 20-30 km/h from afternoon becoming south-southwesterly at 15-25 km/h night.
Perth metropolitan area:
Monday February 19:
City:
18-29 Degrees Celsius
Sunny.Breezy between afternoon to early night.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Sunny.Winds southerly at 15-25 km/h tending south-southwesterly at 25-40 km/h between afternoon to early night.Wind gusts up to 60 km/h possible in the afternoon and evening over coastal and riverside suburbs.
Perth metropolitan area:
Tuesday February 20:
City:
18-31 Degrees Celsius
Sunny.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Mostly sunny.Winds south to southeasterly at 15-25 km/h.
Perth metropolitan area:
Wednesday February 21:
City:
17-30 Degrees Celsius
Partly cloudy.
Chance of any rain:0%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.Winds southeasterly at 15-25 km/h,tending south-southwesterly at 20-30 km/h in the afternoon and evening.
Thursday February 22:
Perth metropolitan area:
Thursday February 22:
City:
20-30 Degrees Celsius
Partly to mostly cloudy.
Chance of any rain:5%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly to mostly cloudy.Winds south to southeasterly at 15-25 km/h.
Friday February 23:
Perth metropolitan area:
Friday February 23:
City:
20-29 Degrees Celsius
Partly cloudy.
Chance of any rain:5%
Rainfall amount:0 mm.
Perth metropolitan area:
Partly cloudy.Winds south to southeasterly at 15-25 km/h.
Forecast for today produced at 12:00 AM,forecast for the rest of the days produced at 6:00 PM Friday February 16.Weather icons courtesy of the US National Weather Service.
