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Hourly Rainfall Totals for KEMPSEY ---------------------------------- Date 21/01/96 22/01/96 23/01/96 24/01/96 25/01/96 Time Sunday Monday Tuesday Wednesday Thursday 0:00 . 1.0 4.0 2.0 . 1:00 . 1.0 2.0 1.0 . 2:00 . . 1.0 . . 3:00 . . . . . 4:00 . 9.0 . . . 5:00 . 3.0 2.0 . . 6:00 . 6.0 1.0 . . 7:00 . 3.0 2.0 . . 8:00 . 2.0 1.0 . . 9:00 . 2.0 9.0 . . 10:00 . 2.0 34.0 . . 11:00 . 4.0 49.0 . . 12:00 . 4.0 28.0 . 3.0 13:00 . 1.0 6.0 1.0 26.0 14:00 . 1.0 1.0 . 1.0 15:00 1.0 2.0 1.0 5.0 . 16:00 . 1.0 1.0 . 1.0 17:00 . . 2.0 . . 18:00 . 2.0 3.0 . The period of data 19:00 . . 2.0 . available is indicated 20:00 5.0 . 3.0 . by the '.' markers. 21:00 13.0 . 1.0 . The totals for this day 22:00 4.0 1.0 1.0 . will be only for the 23:00 . 2.0 1.0 . available data. -------------------------------------------------------- Day Total 23.0 47.0 155.0 9.0 31.0 This is the total for each calendar day. 9:00 Total 48.0 35.0 145.0 6.0 The 9:00 total matches the conventionally quoted rainfall and is the total for a 24hr period ending at 9:00hrs. Grand Total = 265.0 This is the total for all the rain in the marked span.The table below shows the highest rainfall intensity in mm/hr and the time it occurred for a selected set of durations. If the rain is exceptionally intense then an ARI (Average Recurrence Interval) will be calculated, this is an estimate of how frequently this intensity will occur averaged over a long period of time. For example a rainfall of 53.0mm in 60 minutes can be expected, on average once every 4.3 years.
Rainfall Intensities above 2.0 mm --------------------------------- Maximum in 60 mins 53.0 mm at 11:03 23-01-1996 ( 53.0 mm/Hr ARI = 4.3 yrs) 11:06 23-01-1996 11:07 23-01-1996 Maximum in 3 hrs 115.0 mm at 9:56 23-01-1996 ( 38.3 mm/Hr ARI = 18 yrs) 9:57 23-01-1996 Maximum in 6 hrs 128.0 mm at 9:30 23-01-1996 ( 21.3 mm/Hr ARI = 8.1 yrs) Maximum in 12 hrs 140.0 mm at 9:30 23-01-1996 ( 11.7 mm/Hr ARI = 3.6 yrs) Maximum in 24 hrs 157.0 mm at 23:33 22-01-1996 ( 6.5 mm/Hr ARI = 2.3 yrs) Maximum in 48 hrs 219.0 mm at 20:42 21-01-1996 ( 4.6 mm/Hr ARI = 3.3 yrs)