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Sunday 13 August 2000

Brief heavy rain in NSW
A band of moderate rain with sporadic heavier falls moved southwards through NSW today. The rain developed under a significant upper pool of cold air (see chart), with the heaviest falls occurring between the upper Hunter Valley and Tamworth. Keeva, near Nundle, recorded 33mm in the 24 hours to 9am Monday, while Tamworth registered 31mm at the Airport. Much of the rain fell during the few hours that the main rainband took to pass, as can be seen from these registrations for 3 hours: Norah Head on the Central Coast 10mm to 6am, Bellambi in the Illawarra 12mm to noon, Wagga Airport 10mm to 6pm, and Albury 10mm and Tuggeranong, south of Canberra, 11mm to 9pm. However, a second area of rain gave the upper Hunter/Tamworth area close to an inch of rain between 9 this evening and 3am Monday, with Tamworth Airport recording 20mm and Murrurundi 22mm during the 6 hour period.
Though there was little of note on the surface weather maps, the 10pm chart for 500hPa (around 5.5km) showed the cause of today's rain in NSW. A broad upper low covers the state (white lines), while temperatures were as low as -30 over the state's Central West (green lines). The cold pool moved slowly SE today and Monday. Fiorino

Today's highest rainfall totals for the 24 hours to 9am

16.0 Frenchs Forest NSW
14.0 Bunbury WA
14.0 Norah Head LH NSW
13.0 Belrose NSW

High falls for other periods:

WA:
Bunbury: 13mm in 3h to 3am

NSW:
Bellambi: 12mm in 3h to noon

Today's highest & lowest temps

Other extremes

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Records set this day

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Maximum Minimum
36.3 Curtin AP Derby WA 24.0 McCluer Is NT
24.0 Coconut Is Qld
0.1 Mt Wellington Tas -10.0 Charlotte Pass NSW

Greatest variations from normal

Maximum Minimum
+4.9
22.0 Salmon Gums WA
+6.6
9.0 Quirindi NSW
-9.2
12.0 Bollon Qld
-7.2
-1.0 Ceduna AP SA