Cairns Aero - IFD Analysis

Cairns Aero - IFD

1:00am 14/05/2026 to 1:00am 16/05/2026

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

1.8 mm

4:50am 15/05/2026

5:00am 15/05/2026

1 in 1 years

100.0 %

20m

2.4 mm

5:50pm 15/05/2026

6:10pm 15/05/2026

1 in 1 years

100.0 %

30m

2.6 mm

4:40am 15/05/2026

5:10am 15/05/2026

1 in 1 years

100.0 %

60m

3.6 mm

4:00am 15/05/2026

5:00am 15/05/2026

1 in 1 years

100.0 %

90m

3.8 mm

3:40am 15/05/2026

5:10am 15/05/2026

1 in 1 years

100.0 %

120m

3.8 mm

3:10am 15/05/2026

5:10am 15/05/2026

1 in 1 years

100.0 %

4.2 mm

3:10pm 15/05/2026

6:10pm 15/05/2026

1 in 1 years

100.0 %

5.6 mm

12:50am 15/05/2026

5:20am 15/05/2026

1 in 1 years

100.0 %

6.0 mm

11:00pm 14/05/2026

5:00am 15/05/2026

1 in 1 years

100.0 %

7.6 mm

10:50pm 14/05/2026

7:50am 15/05/2026

1 in 1 years

100.0 %

12h

8.6 mm

9:40pm 14/05/2026

9:40am 15/05/2026

1 in 1 years

100.0 %

18h

11.6 mm

12:50am 15/05/2026

6:50pm 15/05/2026

1 in 1 years

100.0 %

24h

13.4 mm

11:30pm 14/05/2026

11:30pm 15/05/2026

1 in 1 years

100.0 %

30h

14.6 mm

5:30pm 14/05/2026

11:30pm 15/05/2026

1 in 1 years

100.0 %

36h

15.0 mm

11:30am 14/05/2026

11:30pm 15/05/2026

1 in 1 years

100.0 %

48h

16.6 mm

1:00am 14/05/2026

1:00am 16/05/2026

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.

Last 4 hours of data on the live weather map (satellite and radar)
Last 4 hours of SD and HD radar imagery
Last 4 days of AWS, rain gauge and river height observations
Automatic update of live radar and observation data
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