MILL CREEK DAM, WA

Maximum of Precipitation (Inches)

(455387)

File last updated on March 18, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
1948-----z-----z-----z-----z-----z-----z0.55 0.12 0.37 0.44 0.58 0.46 -----z
19490.28 0.62 0.25 0.17 0.55 0.11 0.00 0.15 0.70 0.45 0.50 0.43 0.70
19500.35 0.38 0.35 0.28 0.29 1.34 0.10 0.35 0.18 1.19 0.53 0.61 1.34
19510.63 0.46 0.35 0.48 0.73 1.30 0.20 0.08 0.59 0.83 0.13 0.19 1.30
19520.20 0.47 0.32 0.80 0.45 0.70 0.04 0.01 0.38 0.06 0.28 0.36 0.80
19530.65 0.64 0.38 0.52 0.78 0.56 0.00 0.25 0.05 0.51 0.70 0.59 0.78
19540.63 0.28 0.45 0.54 0.26 0.45 0.25 0.46 0.44 0.73 0.50 0.86 0.86
19550.26 0.27a0.37a0.79 1.27a0.16 0.30a0.00 1.10 1.82 1.27e0.61b1.82k
19561.65f0.59b0.62c0.12 0.99a0.38b0.45a1.31b0.03 0.50 0.34c0.54a1.65u
19570.40a0.56b0.40d0.97a0.90b0.62 0.02 0.24 0.53 0.88b1.11 0.52a1.11m
19581.06a0.48 0.38 0.72f1.33a0.40 0.02 0.00 0.27b0.30 0.51b1.24c1.33o
19590.82c0.98 0.48b0.50 0.87a0.52a0.03 0.75 1.22a0.52 0.22b0.21c1.22m
19600.35a0.44 0.68 0.44a0.66b0.86 0.00 0.52 0.78c0.77a0.96 0.48d0.96l
19610.54b1.11c0.66c0.82c0.44 0.33b0.00 0.17 0.41 0.72b0.98b0.70 1.11q
19620.40b0.25b0.87b0.39b0.70b0.19a0.01 0.42a1.07 1.15 0.47e1.28c1.28t
19630.11h-----z-----z0.14v0.30a0.14 0.53 0.08a0.25a0.39 0.84a0.50 -----z
19640.42 0.14a0.16a0.42 0.15b0.66 0.90 0.13 0.27a0.29 0.85a0.81a0.90g
19650.95b0.51 0.20a0.66 0.63 0.85a0.32 0.95a0.21 0.46 0.42a0.10 0.95f
19660.89a0.34 0.59 0.13 0.20 0.52 1.87 0.35 0.10 0.46 0.74 0.88 1.87a
19670.52 0.18 0.60 0.40 0.74 0.23 0.00 0.00 0.45 0.84 0.68 0.41 0.84
19680.23 0.81 0.48 0.27 0.38 0.39 0.30 0.40 0.52 0.56 1.27 0.89 1.27
19691.19 0.23 0.25 1.42 0.38 0.62 0.02 0.00 0.22 0.45 0.54 0.56 1.42
19701.53 1.33 0.76 1.32 0.21 0.61 0.13 0.14 1.06 0.73 0.82 0.17 1.53
19710.89 0.36 0.41 0.48 1.43 1.28 0.75 0.21 1.27 0.47 1.33a2.09a2.09b
19720.64 0.40 1.21 0.48 1.00 0.43 0.23 0.20 0.67 0.53 0.28 0.58 1.21
19730.19 0.73 0.47 0.33 0.54 0.43 0.04 0.12 0.60 0.46 1.02 0.81b1.02b
19740.49 0.58b0.87 0.96 0.39 0.46 0.60 0.00 0.01 0.30 0.56 1.08 1.08b
19751.04 0.28 0.48a0.40 0.29 0.28 0.18 0.55 0.00 0.45 0.74 0.62 1.04a
19760.33 0.75 0.56 0.53 0.41 0.20 0.35 0.49 0.10 0.42 1.28 0.32 1.28
19770.45 0.22 0.40 0.23 0.33 0.37 0.35 1.44 0.38 0.18 0.55 0.62 1.44
19780.36 0.27 0.43 1.18 0.36 0.31 0.30 1.25 0.37 0.11 0.51 0.96 1.25
19790.41 0.36 0.58 0.50 -----z0.22 0.03 0.79 0.16 1.16 0.55 0.38 -----z
19800.79 0.34 0.56 0.22 1.20 0.47 0.20 0.33 1.10 1.04 0.45 0.73 1.20
19810.48 0.82 0.63 0.78 0.76 0.66 0.51 0.06 0.63 0.54 0.99 1.17 1.17
19820.92 0.85 0.62 0.72 0.24 0.28 0.42 0.75 0.59 1.40 0.57 0.58 1.40
19830.45 0.58 0.45a0.42 0.45 0.74 0.71 0.65 0.53 0.45 0.72 0.51 0.74a
19840.28 0.65 0.75 0.45 0.50 0.54 0.00 0.26 0.39 0.62 1.50 0.68 1.50
19850.70 0.80 0.45 0.28 0.45 0.35 0.18 0.31 0.42 0.79 0.52 0.40 0.80
19860.45 0.83 0.52 0.21 1.00 0.32 0.36 0.05 0.71 0.51 0.68 0.30 1.00
19870.52a0.44 1.09 0.61 0.84 0.17 0.42 0.11 0.00 0.00 0.24b0.58 1.09c
19881.30 0.78a0.49b0.70 1.20c0.30a0.08b0.00 0.30 0.10 0.58j0.40h-----z
19891.03e0.54d0.67c0.72d0.85b0.18 0.06 0.35 0.27 0.39 0.92b0.88 1.03t
19900.35 0.40 0.74 1.14 0.58 0.23 0.10 0.79 0.07 0.74 0.76 0.44 1.14
19910.30 0.24 0.77 0.45 1.61 1.06 0.10 1.15 0.01 0.90a0.94 0.64 1.61a
19920.27d0.39c0.15 0.50 0.25 0.44 2.10 1.16 0.99 0.36 0.88a0.36d2.10l
19930.55e0.36a0.33b1.17 1.19 0.80 0.78a0.62 0.01 0.21 0.25b0.59e1.19p
19941.24a0.81c0.20a0.36a0.70 0.27 0.23 0.00 0.22 1.09a2.00e0.61c2.00o
19950.82c0.36c0.97c1.09 0.32 0.58 0.25 0.66 0.51 0.90 1.02 0.59a1.09j
19960.70e0.83a0.94 1.10 0.84 0.31 0.00 0.00 0.40 0.58 1.70e1.11b1.70m
19970.91a0.80 0.66b0.68 0.37 0.55 0.38 0.02 0.35 0.44 0.31 0.50f0.91i
19980.59b0.45c0.37 0.53 0.50 0.17 0.12 0.05 0.32 0.35 0.56 0.40 0.59e
19990.44 0.33 0.35 0.43 0.72 0.25 0.01 0.24 0.00 0.55 0.43 0.40b0.72b
20000.53 0.95 1.20d0.44 1.86 0.61 0.09 0.00 0.62 0.70 0.33 0.48 1.86d
20010.65 0.57a0.29 0.69 0.64 0.27 0.03 0.01 0.18 0.58 0.53 0.16 0.69a
20020.30 0.52b0.75c0.24 0.52 0.56 0.28 0.00 0.24 0.29 0.50 0.84a0.84f
20030.57 0.95 0.53 0.67 0.21 0.00 0.00 0.13 0.90 0.21 0.45 1.07a1.07a
20040.89 0.67 0.34 0.46 0.55 0.98 0.08 0.50 0.17 0.52 0.94 0.19 0.98
20050.29a0.12 0.67 0.62 0.84 0.23 0.15 0.00 0.10 0.60 0.48 0.70 0.84a
20060.69 0.66 0.63 0.77 1.26 0.72 0.03 0.05 0.40 0.39 1.45 0.82 1.45
20070.67j0.33 0.64 0.27 0.28 1.00 0.25 0.34 0.25 0.28 0.90 0.49a1.00k
20080.47c0.20 0.30j0.15 0.17 0.40 0.10 0.20 0.20 0.25 0.90e1.50i-----z
20091.60 0.45h1.43i0.77 0.48 0.60 0.01 1.13 0.01 1.00 0.41d1.50 1.60u
20100.58l0.37k0.42i0.97 0.74 1.15 0.12 0.02 0.46 0.34l0.58f0.77 -----z
20110.10l0.77j0.72f0.65g0.33d0.92h0.33b0.07 0.06 0.50d0.20g0.46g-----z
20120.06n0.11m0.87f0.80b0.13e0.75j0.30 0.01d0.00 0.68h0.51j0.75c-----z
20130.55 0.20 0.35 0.51 0.39 0.84 0.08 0.15 0.59 0.17 0.55 0.49 0.84
20140.45 0.55a0.83i0.68h0.51g0.84d0.08f0.22f0.05i0.38h0.86g0.98f-----z
20150.60j0.96j0.48f0.52c1.50i0.06d0.06c0.15 0.97g0.15h1.36l0.80g-----z
20160.66k0.75i0.78h0.49j0.57c0.52 0.72d0.14f0.70j0.83e0.29g0.60g-----z
20170.70l0.65g0.67f0.47b0.62d0.58c0.00 0.00c0.44 0.52g0.52j1.32f-----z
20180.50k0.53i0.68i1.04b0.45g0.19a0.00 0.12 0.00b0.83f0.65g0.57e-----z
20191.54e1.05g0.50k0.94a1.19a0.44 0.00a0.28 0.87b0.85b0.20g0.33h-----z
20200.51c1.12a0.32 0.19 1.62 0.80 0.06a0.04a0.37d1.07c1.33j1.00i-----z
20210.35j1.29f0.42f0.20e0.08c0.21 0.00c0.30c0.40d0.79c0.86i1.15m-----z
20220.55h0.16i0.86h0.42g1.05d1.48 0.18f0.68a0.07b1.75h1.21l1.36j-----z
20230.30k0.96e0.60i0.48a0.10c0.25b0.02a0.20 0.24g0.75b1.32i0.80g-----z
20240.37f0.26h0.39r-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN0.63 0.55 0.54 0.58 0.65 0.51 0.25 0.32 0.40 0.59 0.72 0.65 1.17
S.D.0.34 0.27 0.24 0.31 0.40 0.32 0.37 0.36 0.33 0.33 0.38 0.34 0.35
SKEW1.12 0.62 0.83 0.70 0.90 1.02 3.11 1.38 0.87 0.96 1.07 1.49 0.67
MAX1.60 1.33 1.21 1.42 1.86 1.48 2.10 1.44 1.27 1.82 2.00 2.09 2.09
MIN0.19 0.12 0.15 0.12 0.08 0.00 0.00 0.00 0.00 0.00 0.13 0.10 0.69
YRS62 63 60 69 71 73 74 74 72 69 62 63 37