Week’s Weather 13.9.09

A surface frontal system moved through the Ranges on Monday afternoon bringing the prospect of some rain as it interacted with a north-west cloudband. The rain came in a thunderstorm, with some heavy falls measuring as much as 147 mm per hour. Total rainfall resulting from the thunderstorm was 28.8 mm. Fine weather prevailed for the remainder of the week with long hours of sunshine. A week of high fire danger brought on by tinder dry undergrowth, strong winds, 26 mm of evapotranspiration, solar radiation of over 1000 watts per m2 , low humidity and 52 hours of bright sunshine. These were all a recipe for disaster, averted only by the skill and expertise of our local rural fire-fighters.  Extensive burn-back was in full operation mainly during late afternoons. A temperature inversion, combined with lack of overnight wind, prevented dispersal of smoke until the following day.

Aug/Sept

2009

Rain 9 am

Evap.

Soil @20cm

Temp.&(Moist)

Gust

Knots

Bright Sun

Hours

Cloud 3pm

Mon  7th

Nil

2.4 mm

16.7ºC(43)

19

5.3

5Sc,2Ac

Tues  8tht

28.8 mm

3.0 mm

17.2ºC(12)

10

7.0

3Cu2,2Cb

Wed  9th

Nil

3.8 mm

16.7ºC(24)

11

8.3

Nil

Thurs 10th

Nil

4.0 mm

16.1ºC(37)

10

7.3

5Sc

 Fri    11th

Nil

4.0 mm

16.1ºC(44)

13

8.3

Nil

 Sat   12th

Nil

5.2 mm

16.1ºC(51)

11

8.3

Nil

 Sun  13th

Nil

3.4 mm

17.2ºC(52)

10

7.8

Nil

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