3:00am 18/01/2026 to 3:00am 20/01/2026
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
15m
10.0 mm
6:15pm 18/01/2026
6:30pm 18/01/2026
1 in 1.0 years
97.16 %
30m
19.0 mm
6:15pm 18/01/2026
6:45pm 18/01/2026
1 in 1.2 years
84.43 %
45m
19.0 mm
6:00pm 18/01/2026
6:45pm 18/01/2026
1 in 1.1 years
91.88 %
60m
19.0 mm
5:45pm 18/01/2026
6:45pm 18/01/2026
1 in 1.0 years
95.52 %
90m
19.0 mm
5:15pm 18/01/2026
6:45pm 18/01/2026
1 in 1.0 years
97.85 %
120m
19.0 mm
4:45pm 18/01/2026
6:45pm 18/01/2026
1 in 1.0 years
98.56 %
3h
19.0 mm
3:45pm 18/01/2026
6:45pm 18/01/2026
1 in 1.0 years
99.21 %
4h
21.0 mm
5:45pm 18/01/2026
10:15pm 18/01/2026
1 in 1.0 years
99.25 %
6h
21.0 mm
4:15pm 18/01/2026
10:15pm 18/01/2026
1 in 1.0 years
99.69 %
9h
21.0 mm
1:15pm 18/01/2026
10:15pm 18/01/2026
1 in 1.0 years
99.88 %
12h
21.0 mm
10:15am 18/01/2026
10:15pm 18/01/2026
1 in 1.0 years
99.98 %
18h
21.0 mm
4:15am 18/01/2026
10:15pm 18/01/2026
1 in 1 years
100.0 %
24h
21.0 mm
3:15am 18/01/2026
3:15am 19/01/2026
1 in 1 years
100.0 %
30h
21.0 mm
3:15am 18/01/2026
9:15am 19/01/2026
1 in 1 years
100.0 %
36h
21.0 mm
3:15am 18/01/2026
3:15pm 19/01/2026
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.