Dark mode
Light mode-35.21477, 149.15815
5:00pm 24/02/2018 to 12:00pm 26/02/2018
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
10.3 mm
8:20am 25/02/2018
8:30am 25/02/2018
1 in 2.4 years
41.07 %
20m
18.7 mm
8:20am 25/02/2018
8:40am 25/02/2018
1 in 5.6 years
17.74 %
30m
22.9 mm
8:20am 25/02/2018
8:50am 25/02/2018
1 in 6.6 years
15.15 %
60m
36.8 mm
7:50am 25/02/2018
8:50am 25/02/2018
1 in 19.5 years
5.13 %
90m
43.1 mm
7:40am 25/02/2018
9:10am 25/02/2018
1 in 23.7 years
4.22 %
120m
48.4 mm
7:40am 25/02/2018
9:40am 25/02/2018
1 in 27.8 years
3.59 %
3h
60.6 mm
7:00am 25/02/2018
10:00am 25/02/2018
1 in 47.1 years
2.12 %
4h
68.0 mm
7:00am 25/02/2018
11:30am 25/02/2018
1 in 44.0 years
2.27 %
6h
71.7 mm
6:50am 25/02/2018
12:50pm 25/02/2018
1 in 36.2 years
2.76 %
9h
73.9 mm
3:10am 25/02/2018
12:10pm 25/02/2018
1 in 22.4 years
4.46 %
12h
75.9 mm
12:10am 25/02/2018
12:10pm 25/02/2018
1 in 16.6 years
6.01 %
18h
79.8 mm
7:00pm 24/02/2018
1:00pm 25/02/2018
1 in 11.7 years
8.53 %
24h
85.8 mm
6:20am 25/02/2018
6:20am 26/02/2018
1 in 10.8 years
9.27 %
30h
90.1 mm
12:10am 25/02/2018
6:10am 26/02/2018
1 in 9.9 years
10.13 %
36h
93.7 mm
5:30pm 24/02/2018
5:30am 26/02/2018
1 in 9.3 years
10.75 %
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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