Sunday, 1 January 2006
EXTREME HIGH TEMPERATURE REPORT
From: Raymond Terrace, Written by: Grant Burgess
http://www.raymondterrace.hunterweather.com
NSW Extreme Heat
~ The Hunter experienced it's highest ever temperature with 45.9C being recorded at Singleton. The previous high of
45.6C was held by Jerrys Plains on 25/12/1957. Unfortunately this station has not reported temperatures for the
last 2 weeks.
~ Sydney metropolitan recorded it's second all-time highest temperature with 45.2C from the airport.Sydney's
Observatory Hill recorded 45.3C on 14/01/1939.
~ Extreme temperatures were also reported from many areas of W & SW NSW but are far more common in that part
of the country.
Raymond Terrace Observations
~ Sunday saw a maximum temperature of 44.5C at 1649, and a temperature of 43.4C at 1500.
~ Previous records included a temperature of 42.8C for January, recorded on the 15/01/2001 and an overall maximum of
44.0C recorded on 21/02/2004.
~ The air temperature increased rapidly while humidity levels plummeted with the arrival of the NW winds shortly before
8am. Skies remained clear & winds maintained a moderate strength for all of the day & evening.
~ At this stage I remain unsure as to why such extreme temperatures were recorded over such a wide area. Days
such as this have been observed many times in the past with conditions more favourable to extreme heat in the hunter.
ie the 850hPa (approx 1500m) atmospheric temperature at Williamtown recorded 23.8C - not uncommon for this
time of year. As well as that the 1000-500 thickness (indicating the average temperature of the whole air mass) was
around 5760m - also not uncommon.
~ Conditions remained uncomfortable until a moderate southerly change pushed up the coast & passed through at 2326.
Initially winds remained only moderate but became strong & gusty when a maximum gust of 60.5km/h was recorded
at 0152.
Here is an hourly temperature plot for Sunday from Raymond Terrace
Time Air Temp Time Air Temp Time Air Temp Time Air Temp
0000 25.5 0600 23.1 1200 40.5 1800 43.6
0100 25.0 0700 23.4 1300 41.8 1900 41.2
0200 24.6 0800 27.5 1400 42.9 2000 38.9
0300 24.4 0900 31.2 1500 43.4 2100 37.0
0400 24.0 1000 35.5 1600 43.9 2200 35.6
0500 22.9 1100 38.5 1700 44.2 2300 34.0
Hunter record heat
Location Sunday Jan Record Date Recorded Overall Record Date Recorded Years of Data
Berry Park (Morpeth) * 44.2 43.4 15-01-01 44.1 21-02-04 11
Nobby's Signal Station 41.4 40.8 07-01-64 42.0 23-12-90 48
Newcastle Uni   43.2 42.1 30-01-03 43.1 21-02-04 6
Raymond Terrace *   44.5 42.8 15-01-01 44.0 21-02-04 8
Singleton   45.9 43.5 14-01-05 44.8 01-12-04 2
Tocal   44.0 43.7 15-01-01 44.6 21-02-04 31
Williamtown   44.4 44.1 07-01-64 44.1 07-01-64 55
* - Not a Bureau of Meteorology station
Other areas with record heat
Location Sunday Jan Record Date Recorded Overall Record Date Recorded Years of Data
Bega AWS   44.1 43.6 30-01-03 43.6 30-01-03 10
Bellambi AWS   43.7 35.0 07-01-02 39.0 27-02-98 8
Gosford   43.8 42.8 30-01-03 43.0 30-12-72 22
Jervis Bay AWS   42.1 33.0 07-01-02 36.9 28-11-04 4
Narooma RVCP   43.5 39.4 08-01-69 39.5 01-12-93 21
Norah Head   43.6 41.4 18-01-03 41.4 18-01-03 10
Sydney - Observatory Hill 44.2 45.3 14-01-39 45.3 14-01-39 146
Sydney Airport   45.2 43.0 27-01-60 43.4 25-11-82 66
Sydney Olympic Park 44.7 44.2 18-01-03 44.2 18-01-03 9
Ulladulla AWS   44.0 38.5 15-01-01 40.0 25-11-02 10
Wollongong Ap AWS   45.0 38.0 30-01-03 41.0 05-02-00 6
There were many other centres to record extreme temperatures that I have not included.
All data is from the Bureau of Meteorology unless specified