Innisfail Aerodrome - IFD Analysis

Innisfail Aerodrome - IFD

9:00pm 13/05/2026 to 9:00pm 15/05/2026

You can find out more about Design Rainfall and IFD here.

Observations for this analysis :

Maximum observed rainfall by duration, estimated return period and AEP

Duration

Rainfall

Start

End

Years

AEP

10m

9.4 mm

10:20pm 14/05/2026

10:30pm 14/05/2026

1 in 1.0 years

99.97 %

20m

15.8 mm

10:20pm 14/05/2026

10:40pm 14/05/2026

1 in 1.0 years

99.61 %

30m

18.4 mm

10:10pm 14/05/2026

10:40pm 14/05/2026

1 in 1.0 years

99.77 %

60m

23.6 mm

10:00pm 14/05/2026

11:00pm 14/05/2026

1 in 1.0 years

99.79 %

90m

28.6 mm

10:00pm 14/05/2026

11:30pm 14/05/2026

1 in 1.0 years

99.62 %

120m

30.4 mm

9:40pm 14/05/2026

11:40pm 14/05/2026

1 in 1.0 years

99.78 %

31.2 mm

9:10pm 14/05/2026

12:10am 15/05/2026

1 in 1.0 years

99.93 %

33.8 mm

9:40pm 14/05/2026

2:10am 15/05/2026

1 in 1 years

100.0 %

37.4 mm

9:40pm 14/05/2026

3:40am 15/05/2026

1 in 1 years

100.0 %

44.4 mm

9:40pm 14/05/2026

6:40am 15/05/2026

1 in 1 years

100.0 %

12h

48.6 mm

5:40pm 14/05/2026

5:40am 15/05/2026

1 in 1 years

100.0 %

18h

50.0 mm

4:10pm 14/05/2026

10:10am 15/05/2026

1 in 1 years

100.0 %

24h

54.0 mm

9:00pm 14/05/2026

9:00pm 15/05/2026

1 in 1 years

100.0 %

30h

59.0 mm

3:00pm 14/05/2026

9:00pm 15/05/2026

1 in 1 years

100.0 %

36h

60.8 mm

9:00am 14/05/2026

9:00pm 15/05/2026

1 in 1 years

100.0 %

48h

66.6 mm

9:00pm 13/05/2026

9:00pm 15/05/2026

1 in 1 years

100.0 %

Note: A '1 in 1.0 years' estimate means that it is almost certain to occur at least once in a year, and could occur much more than once per year on average. For smaller values like this the Annual Recurrance Interval (ARI) may be of more relevance, but it is complex to calculate for common events.

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Last 4 hours of SD and HD radar imagery
Last 4 days of AWS, rain gauge and river height observations
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