Dark mode
Light mode-35.23760, 149.14172
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
11.9 mm
8:00am 25/02/2018
8:10am 25/02/2018
1 in 3.7 years
26.83 %
20m
19.4 mm
8:20am 25/02/2018
8:40am 25/02/2018
1 in 6.2 years
16.04 %
30m
31.0 mm
7:40am 25/02/2018
8:10am 25/02/2018
1 in 25.4 years
3.94 %
60m
56.5 mm
7:40am 25/02/2018
8:40am 25/02/2018
1 in 186.9 years
0.53 %
90m
74.8 mm
7:20am 25/02/2018
8:50am 25/02/2018
1 in 411.4 years
0.24 %
120m
85.3 mm
7:10am 25/02/2018
9:10am 25/02/2018
1 in 500.0 years
0.2 %
3h
91.0 mm
7:00am 25/02/2018
10:00am 25/02/2018
1 in 342.7 years
0.29 %
4h
96.0 mm
7:10am 25/02/2018
11:40am 25/02/2018
1 in 218.9 years
0.46 %
6h
98.4 mm
6:50am 25/02/2018
12:50pm 25/02/2018
1 in 155.2 years
0.64 %
9h
99.4 mm
3:20am 25/02/2018
12:20pm 25/02/2018
1 in 84.2 years
1.19 %
12h
100.4 mm
1:40am 25/02/2018
1:40pm 25/02/2018
1 in 55.8 years
1.79 %
18h
105.3 mm
6:50pm 24/02/2018
12:50pm 25/02/2018
1 in 37.7 years
2.65 %
24h
111.8 mm
6:00am 25/02/2018
6:00am 26/02/2018
1 in 32.8 years
3.05 %
30h
113.9 mm
1:20am 25/02/2018
7:20am 26/02/2018
1 in 26.5 years
3.77 %
36h
118.4 mm
6:50pm 24/02/2018
6:50am 26/02/2018
1 in 24.8 years
4.04 %
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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