Dark mode
Light mode-35.25167, 149.15079
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
20.9 mm
7:40am 25/02/2018
7:50am 25/02/2018
1 in 43.9 years
2.28 %
20m
35.6 mm
7:40am 25/02/2018
8:00am 25/02/2018
1 in 133.9 years
0.75 %
30m
48.8 mm
7:40am 25/02/2018
8:10am 25/02/2018
1 in 294.9 years
0.34 %
60m
78.1 mm
7:30am 25/02/2018
8:30am 25/02/2018
1 in 1059.8 years
0.09 %
90m
100.7 mm
7:20am 25/02/2018
8:50am 25/02/2018
1 in over 2000 years
< 0.05 %
120m
110.4 mm
7:10am 25/02/2018
9:10am 25/02/2018
1 in over 2000 years
< 0.05 %
3h
117.5 mm
7:00am 25/02/2018
10:00am 25/02/2018
1 in 1302.6 years
0.08 %
4h
124.9 mm
7:10am 25/02/2018
11:40am 25/02/2018
1 in 809.6 years
0.12 %
6h
126.9 mm
6:50am 25/02/2018
12:50pm 25/02/2018
1 in 517.9 years
0.19 %
9h
128.3 mm
2:50am 25/02/2018
11:50am 25/02/2018
1 in 256.2 years
0.39 %
12h
129.7 mm
12:50am 25/02/2018
12:50pm 25/02/2018
1 in 166.6 years
0.6 %
18h
137.1 mm
6:50pm 24/02/2018
12:50pm 25/02/2018
1 in 118.6 years
0.84 %
24h
143.1 mm
6:00am 25/02/2018
6:00am 26/02/2018
1 in 94.0 years
1.06 %
30h
146.2 mm
1:20am 25/02/2018
7:20am 26/02/2018
1 in 77.2 years
1.3 %
36h
153.3 mm
6:00pm 24/02/2018
6:00am 26/02/2018
1 in 75.9 years
1.32 %
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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