Dark mode
Light mode-35.28244, 149.11360
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
7.5 mm
8:10am 25/02/2018
8:20am 25/02/2018
1 in 1.4 years
70.51 %
20m
14.4 mm
8:10am 25/02/2018
8:30am 25/02/2018
1 in 2.4 years
41.2 %
30m
21.3 mm
8:00am 25/02/2018
8:30am 25/02/2018
1 in 4.7 years
21.41 %
60m
33.9 mm
8:00am 25/02/2018
9:00am 25/02/2018
1 in 11.4 years
8.74 %
90m
41.1 mm
8:00am 25/02/2018
9:30am 25/02/2018
1 in 15.8 years
6.32 %
120m
44.8 mm
7:50am 25/02/2018
9:50am 25/02/2018
1 in 16.0 years
6.27 %
3h
49.6 mm
8:00am 25/02/2018
11:00am 25/02/2018
1 in 14.9 years
6.73 %
4h
57.2 mm
7:40am 25/02/2018
12:10pm 25/02/2018
1 in 16.2 years
6.18 %
6h
58.5 mm
6:30am 25/02/2018
12:30pm 25/02/2018
1 in 12.0 years
8.31 %
9h
59.7 mm
3:40am 25/02/2018
12:40pm 25/02/2018
1 in 7.7 years
13.01 %
12h
61.8 mm
12:40am 25/02/2018
12:40pm 25/02/2018
1 in 6.1 years
16.38 %
18h
66.4 mm
6:40pm 24/02/2018
12:40pm 25/02/2018
1 in 4.7 years
21.19 %
24h
74.7 mm
6:00am 25/02/2018
6:00am 26/02/2018
1 in 5.3 years
18.85 %
30h
77.0 mm
1:30am 25/02/2018
7:30am 26/02/2018
1 in 4.5 years
22.04 %
36h
81.6 mm
6:40pm 24/02/2018
6:40am 26/02/2018
1 in 4.6 years
21.52 %
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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