Australian Government Bureau of Meteorology
Western Australia
Fire Weather Warning
for Ravensthorpe Shire, East Pilbara Coast, West Pilbara Coast, Exmouth Gulf Coast, Gascoyne Inland, Goldfields, Eucla, South Interior, Esperance Shire Inland, Roe, Lakes, Ninghan and Jilbadgie fire weather districts
Issued at 01:27 AM WST on Saturday 07 December 2019
Weather Situation
Fresh and gusty westerly winds over western parts of the State as a cold front moves over the southwest. Very hot and dry conditions remain over inland parts of the State with fresh west to northwesterly winds through the Pilbara, Gascoyne, Goldfields and Interior.
For the rest of Saturday 07 December:
Extreme Fire Danger for the following areas:
Eucla and South Interior
Severe Fire Danger for the following areas:
Ravensthorpe Shire, East Pilbara Coast, West Pilbara Coast, Exmouth Gulf Coast, Gascoyne Inland, Goldfields, Esperance Shire Inland, Roe, Lakes, Ninghan and Jilbadgie
The Department of Fire and Emergency Services advises you to:
Action your Bushfire Survival Plan now.
Monitor the fire and weather situation through your local radio station, www.dfes.wa.gov.au and www.bom.gov.au.
Call 000 (Triple Zero) in an emergency.
For information on preparing for bushfires go to www.dfes.wa.gov.au.
No further warnings will be issued for this event, but the situation will continue to be monitored and further warnings issued if necessary.
Forecast
Williamstown (30.7444°S, 121.4853°E, 400m AMSL) set as my default location ›
-
My MLA
-
Current condition
TODAY27° 38° thunderstorms clearing Chance of rain: 30% Likely amount: < 1mm First
lightLast light Sunrise Sunset 4:16am WST 4:44am WST 6:47pm WST 7:15pm WST NOW31.5° Feels Like: 26.7° Relative Humidity: 14% Dew: 0.8° Wind: SW 15km/h Gust: 17km/h Rainfall since 9am: 0.0mm Pressure: 1006.9hPa -
Today Weather
WilliamstownNow26.9°cFeels Like:24.4°Wind:WNW 13km/hGusts:17km/hHumidity:35%27°Min38°MaxToday in WilliamstownVery hot. Partly cloudy. Slight chance of a shower. The chance of a thunderstorm. Winds E/NE 15 to 25 km/h shifting W/SW 20 to 30 km/h during the morning. Overnight temperatures falling to 23 to 28 with daytime temperatures reaching 37 to 44.Tomorrow21°Min32°MaxMostly sunny. Slight chance of a shower in the east, near zero chance elsewhere. The chance of a thunderstorm in the east in the morning and afternoon. Winds S/SW 20 to 30 km/h tending S/SE during the day. Overnight temperatures falling to between 17 and 25 with daytime temperatures reaching 29 to 37. -
Radar
-
Popup Radar
-
Warnings
-
7 day forecast
Today: Very hot. Partly cloudy. Slight chance of a shower. The chance of a thunderstorm. Winds E/NE 15 to 25 km/h shifting W/SW 20 to 30 km/h during the morning. Overnight temperatures falling to 23 to 28 with daytime temperatures reaching 37 to 44.
Forecast for Williamstown (30.7444°S, 121.4853°E, 400m AMSL) Sat Sun Mon Tue Wed Thu Fri Summary Minimum 27° 21° 16° 16° 17° 17° 19° Maximum 38° 32° 31° 34° 34° 34° 37° Chance of rain 30% 5% 5% 20% 20% 5% 5% Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm UV index Extreme Extreme Extreme Extreme Extreme - - Frost risk Nil Nil Nil Nil Nil Nil Nil 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm Wind speed 15
(km/h)28
(km/h)12
(km/h)14
(km/h)17
(km/h)15
(km/h)17
(km/h)14
(km/h)19
(km/h)20
(km/h)20
(km/h)20
(km/h)16
(km/h)16
(km/h)Wind direction WSW W SSW SW SE SSE E ESE E ESE E SE E E Relative humidity 25% 14% 41% 18% 44% 18% 36% 15% 37% 18% 39% 14% 32% 9% Dew point 11°C 6°C 11°C 5°C 9°C 4°C 8°C 4°C 7°C 7°C 9°C 3°C 9°C -0°C -
28 Day Rainfall forecast
Williamstown Rain Forecast
Williamstown 28-day Rainfall ForecastSUNMONTUEWEDTHUFRISAT7
LOW8
9
10
11
12
13
14
15
16
17
18
19
20
21
LOW22
23
24
25
26
27
28
29
30
31
LOWJan 1
2
LOW3
4
LOWCHANCE OF RAINFALL WITHIN DISTRICTNIL < 25%LOW 25% to 50%MEDIUM 50% to 75%HIGH ≥ 75%Issued Dec 6Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, eastern Australia, the south Pacific, South America, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 14 December to 18 December, 26 December to 30 December, and 4 January to 8 January. Rain events originating in the tropics and moving south are possible about 11 December to 15 December, 29 December to 2 January, and 5 January to 9 January. Over Western Australia the strongest cold fronts should occur about 13 December to 17 December, 27 December to 31 December, and 4 January to 8 January.
Forecast ExplanationThis forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.
The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.
In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.
-
12 Month Rainfall Forecast
Williamstown Rain Forecast
Williamstown 12-month Rainfall ForecastDecJanFebMarAprMayJunJulAugSepOctNov20192020577876649789105012 - 34 - 78 - 910Well below normalBelow normalNear normalAbove normalWell above normalIssue Notes - Issued Nov 8
ENSO status: Neutral IOD status: Positive Sea surface temperatures (SSTs) across the equatorial central Pacific warmed up slightly over the past few weeks. As a reflection, the Nino3.4 index lingered between 0.5 and 0.7 throughout the month of October. The Southern Oscillation Index (SOI) recorded a value of -5.6 during the past month. The current outlook consensus suggests warmer than average SSTs will persist across the equatorial Pacific Ocean through the coming months, but remaining within neutral values. Five out of eight international models maintain a warmer than average Pacific Ocean through the end of 2019 and first quarter of 2020, however, none of these reaching El Nino thresholds. The IRI ENSO forecast continues to suggest less than 40% of another El Nino developing over the next 12 months, with a neutral ENSO the most likely outcome. To the west of Australia, the Indian Ocean Dipole (IOD) remains strongly positive, with the highest positive value since the early 2000s. All six international models maintain a strong positive event until December. In terms of rainfall, there is little variation to the outlook issued last month. The climate outlook for October continues to favour below average rainfall for most of Australia, in particular the eastern half of the continent. During Positive IODs, central and southeastern Australia tend to see a reduction in rainfall during spring, due to a reduction of moisture streaming from the northwest. For northern Australia, the current outlook is for a late onset of the wet season across the Northern Territory and Queensland. Thus far, Darwin and South Eastern Qld have seen the onset of the wet season this year though a week later than usual. Further south, a negative trend in the Southern Annular Mode (SAM) will continue to enhance frontal activity over the far south during October and early. This is likely to offset the Positive IOD in far southern Victoria and western Tasmania, which could see average-to-above average rainfall during October and early December. Looking further ahead, with no significant signature from ENSO, there are no significant climate drivers tilting the balance towards a drier or wetter summer. The current outlook suggest neutral odds.
-
Long range rainfall forecast
Williamstown Rain Forecast
Williamstown 28-day Rainfall ForecastSUNMONTUEWEDTHUFRISAT7
LOW8
9
10
11
12
13
14
15
16
17
18
19
20
21
LOW22
23
24
25
26
27
28
29
30
31
LOWJan 1
2
LOW3
4
LOWCHANCE OF RAINFALL WITHIN DISTRICTNIL < 25%LOW 25% to 50%MEDIUM 50% to 75%HIGH ≥ 75%Issued Dec 6Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, eastern Australia, the south Pacific, South America, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 14 December to 18 December, 26 December to 30 December, and 4 January to 8 January. Rain events originating in the tropics and moving south are possible about 11 December to 15 December, 29 December to 2 January, and 5 January to 9 January. Over Western Australia the strongest cold fronts should occur about 13 December to 17 December, 27 December to 31 December, and 4 January to 8 January.
Forecast ExplanationThis forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.
The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.
In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.
-
Popup - Daily historical
-
Past 5 Days
Williamstown Past 5 Days
This MonthMinimum Maximum Rainfall Monday
Dec 0215.7 °C 33.8 °C 0.0 mmTuesday
Dec 0320.5 °C 36.6 °C 0.0 mmWednesday
Dec 0421.2 °C 39.7 °C 0.0 mmThursday
Dec 0523.2 °C 40.2 °C 0.0 mmFriday
Dec 0621.2 °C 42 °C 0.0 mmLegend -
Almanac
Almanac
Williamstown minimum temp history (30.7444°S, 121.4853°E, 400m AMSL) MAXIMUM TEMPERATURE MINIMUM TEMPERATURE Hottest this month 40.0° 05/12/2019 Coldest this month 11.7° 01/12/2019 Hottest on record 45.0 31/12/1972 Coldest on record 5.5 02/12/1973 Hottest this year 45.3° 28/02/2019 Coldest this year -0.5° 29/06/2019 Long term average 32.0° Long term average 16.6° Average this month 35.8° Average this month 18.5° Hottest December On Record Avg. max. temp. 36.5° 1972 Coldest December on record Avg. min. temp. 14.2° 1952 Williamstown rainfall history (30.7444°S, 121.4853°E, 400m AMSL) RAINFALL Wettest This Month 0.0mm 01/12/2019 Total This Month 0.0mm
0.0 daysLong Term Average 17.4mm 3.8 days Wettest December on record 88.6mm 1972 -
Popup - Radar
Weather Radar for WA
-
Year to Date
Williamstown Year To Date
Average Rainfall To Dec 273.1mm 68.9 day(s) Total For 2019 129.6mm 40.0 day(s) Total To This Day 2018 322.6mm 78.0 day(s) Wettest Day 15.8mm Jun 8 Lowest Temperature -0.5°C Jun29 Highest Temperature 45.3°C Feb28 -
Popup - Monthly historical
-
Climatology
Williamstown Climatology
Williamstown Long-Term Averages
Long-Term Averages Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Mean Max (°C) 33.7 32.1 29.4 25.2 20.7 17.5 16.8 18.7 22.3 25.9 29.1 32.0 25.2 Mean Min (°C) 18.3 17.9 16.1 12.7 8.7 6.2 5.0 5.7 8.0 11.2 14.2 16.6 11.7 Mean Rain (mm) 27.7 31.0 27.6 20.8 25.6 28.0 25.3 21.7 14.3 15.3 18.4 17.4 273.0 Mean Rain Days 3.8 4.4 4.5 5.3 7.1 9.2 9.5 7.5 5.5 4.3 4.0 3.8 68.1