Tuesday, 4 March 2008 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in February 2008
Cooler than normal month

Summary

  • Daytime temperatures below average for WA.
  • Near average overnight temperatures for WA.
  • WA statewide rainfall above average.

Temperature

February 2008 was a relatively cool month as a large area of WA saw below to very much below average daytime temperatures (see February mean maximum temperature anomaly map). Averaged across the state, the mean maximum temperature was 1.19°C below the long term average.

Several locations in the Central West and Central Wheat Belt registered their lowest February maximum temperatures on record in the third week of February, whilst Kalgoorlie in the Goldfields experienced  its three coldest February days on record, on the 19th, 20th and 21st. The cool conditions in these districts during this period were a result of rainband development as a middle-level trough interacted with TC Nicholas near the west Pilbara and Gascoyne coasts.

Overnight temperatures in February were near average in a large area of WA whilst above to very much above average minimum temperatures were recorded  in southwestern parts of the Gascoyne and western parts of the Southwest Land Division.(see February mean minimum temperature anomaly map). Overall, the statewide mean minimum temperature was near average with an anomaly of −0.04°C.

Rainfall

February rainfall was above to very much above average for a large part of WA, with parts of the Central West, southern Gascoyne, and Kimberley receiving highest on record February totals. An active monsoon combined with two middle-level trough events over the southern half brought the mostly above average totals to WA. Only a small part in  the northeast Interior and Southeast Coastal received below average rainfall (see February rainfall decile map). Overall, rainfall averaged across the whole of WA in February exceeded the 1961−1990 mean by 26.1 mm.

Some extremes and records for individual locations in WA are tabulated below.



Extremes

Hottest day
Highest temperature
45.1°C at Eyre on the 17th
Warmest days on average
Highest mean daily maximum temperature
39.6°C at Emu Creek Station
Coolest days on average
Lowest mean daily maximum temperature
22.8°C at Albany
Coldest day
Lowest daily maximum temperature
15.0°C at Kalgoorlie-Boulder Airport on the 19th
15.1°C at Kalgoorlie-Boulder Airport on the 20th & 21st
Coldest night
Lowest temperature
3.5°C at Jarrahwood on the 20th
Coolest nights on average
Lowest mean daily minimum temperature
14.4°C at Jacup
Warmest nights on average
Highest mean daily minimum temperature
26.8°C at Karratha Aero 
Warmest night
Highest daily minimum temperature
30.0°C at Roebourne on the 16th
Wettest overall
Highest total rainfall
721.8 mm at Kalumburu
Wettest day
Highest daily rainfall
172.8 mm at Kalumburu on the 13th
Highest wind gust
100 km/h at Learmonth Airport on the 19th

Records

Record highest total February rainfall
Total rainfall
for February 2008 (mm)
Previous highest
for February
Years of
record
Normal for
February
Burnerbinmah 235.4 224.2 in 1995 106 25.4
Barnong 172.9 139.0 in 1995 105 21.6
Mellenbye 133.7 114.1 in 1970 94 19.7
Mount Padbury 196.0 188.4 in 1942 66 31.4
Kimberley Res.Station 531.6 503.5 in 1969 64 205.5
Cygnet Bay 428.2 425.4 in 1980 45 185.4
Eneabba 93.2 72.6 in 1976 42 13.9
Wyndham 598.8 376.6 in 1997 40 197.8
Kununurra Aero 414.8 404.2 in 1994 35 206.6



Record lowest February daily maximum temperature
Lowest daily maximum
temperature
in February 2008 (°C)
Previous lowest
for February
Years of
record
Normal for
February
Kalgoorlie-Boulder Airport 15.0 on the 19th 16.4 on the 7th in 1993 67 32.1
Carnamah 19.0 on the 20th 21.1 on the 14th in 1955 66 35.5
Geraldton Airport 21.7 on the 21st 22.6 on the 20th in 1986 66 32.5
Mullewa 19.0 on the 20th 22.0 on the 16th in 1990 62 36.4
Dalwallinu Comparison 19.9 on the 20th 20.0 on the 15th in 1990 52 34.6


Record lowest February temperature
Lowest temperature
in February 2008 (°C)
Previous lowest
for February
Years of
record
Normal for
February
Kalbarri 11.6 on the 22nd 12.3 on the 8th in 1994 35 20.5



Notes

This statement has been prepared based on information available at 10 am on Tuesday 4 March 2008. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Normals are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 30 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of "normal" rain.

Further information

Yanhui Blockley & Glenn Cook, Western Australia Climate Services Centre
Bureau of Meteorology
Phone (08) 9263 2222
Email climate.wa@bom.gov.au