ROSS DAM, WA

Maximum of Precipitation (Inches)

(457185)

File last updated on April 24, 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
1960-----z-----z-----z-----z-----z-----z-----z-----z0.57 1.45 2.60 1.17 -----z
19612.85 1.98 1.26 0.49 0.72 0.24 0.40 1.14 0.63 1.35 1.61 1.13 2.85
19622.34 0.51 1.08 1.76 0.47 0.39 0.19 0.73 0.81 0.90 4.42 1.73 4.42
19631.62 2.59 0.88 0.54 0.70 0.33 0.36 0.69 1.04 3.24 1.78 1.62 3.24
19641.94 1.55 0.97 0.93 0.96 0.34 0.29 0.58 1.72 1.38 1.92 1.30 1.94
19651.82 1.95 0.24 1.42 1.63 0.11 0.11 0.37 0.61 1.57 1.62 1.55 1.95
19661.15 0.73 1.52 0.69 0.78 0.68 0.59 0.33 0.34 2.69 0.99 2.18 2.69
19672.08 2.45 1.37 0.56 0.15 1.21 0.15 0.15 0.87 2.93 0.91 2.40 2.93
19681.96 1.44 1.41 1.00 0.49 2.19 0.24 0.69 0.98 0.94 2.34 1.89 2.34
19691.91 0.91 1.69 0.70 0.83 0.42 0.37 0.19 1.23 0.50 1.60 1.24 1.91
19701.54 0.89 1.41 2.05 0.20 0.28 0.35 0.15 1.40 1.20 1.91 1.80 2.05
19711.98 0.75 1.64 0.44 1.09 0.55 0.22 0.38 0.49 1.24 3.51 1.85 3.51
19722.67 2.63 3.16 0.70 1.01 0.87 1.58 1.00 2.30 0.57 1.09 3.53 3.53
19731.48 0.43 1.40 1.15 1.20 0.43 0.04 0.28 0.85 1.63 2.72 1.66 2.72
19742.68 2.35 1.75 0.69 0.38 1.07 0.50c0.08 0.37 0.56 2.11a2.67 2.68d
19751.92 1.11a1.16 0.30 0.56 0.26 0.23 0.76 0.17 1.73a1.90a4.10 4.10c
19761.90 1.48 1.22 0.47 0.72 0.23 0.47 0.65 0.54 0.89 1.06 1.75 1.90
19772.00 1.13 1.55 0.56 0.44 0.53 0.26 0.63 0.59 0.74 2.42 2.20 2.42
19781.20 0.80 1.15 0.33 0.50 0.86 0.47 0.41 0.71 0.90 2.61 0.98 2.61
19790.43 1.48 1.12 0.67 0.37 0.49 0.29 0.20 0.72 1.26 0.33 2.94 2.94
19801.51 1.63 0.93 0.59 1.03 0.21 0.32 0.52 1.18 0.19 2.76 4.54 4.54
19810.42 1.97 0.78 1.23b0.28b1.07 0.56 0.07 1.23 1.32 1.07 1.64 1.97d
19822.18 2.19 0.73a0.38f0.15 0.52b0.87 0.95 0.53 1.48 1.23 2.30 2.30i
19833.65 1.14d1.15 0.45 0.20 0.66 1.89 0.81 0.96 1.42 1.54 0.64 3.65d
19843.04 0.95 1.24 -----z0.83 0.33 0.02 1.08 0.61 1.20 2.60b0.76 -----z
19850.47a0.98 0.45 1.86 0.37a1.27 0.74 0.13 1.54 2.56 2.10 0.63 2.56b
19863.05 2.87a1.21 0.34 0.99 0.33 0.36 0.01 0.56 1.12 3.60 1.05 3.60a
19871.06a2.07 2.43 0.68 2.48 0.45 0.82 0.16 0.72 0.15 0.79 2.20 2.48a
19881.17 0.98 2.73 2.79 0.54 0.40 0.50 0.10 1.58 2.33 2.32 1.62 2.79
19891.04 0.26 1.16 2.05 0.77 0.14 0.34 0.32 0.09 1.28 3.21 1.75 3.21
19901.55 1.90 0.43 0.41 0.40 0.40 0.13 1.13 0.36 2.49 4.16 1.96 4.16
19912.35 2.15 1.28 2.82 0.51 0.26 0.37 0.67 0.26 0.53 2.40 2.15 2.82
19922.32 1.85 0.12 0.96 0.20 0.84 1.28 0.82 1.20 0.67 1.61 2.03 2.32
19932.28 -----z1.60 0.37 1.08 0.80 0.51 0.53 0.79 0.95 0.75 2.00 -----z
19940.87 1.60 1.60 0.23 0.67 0.71 0.42 0.35 0.56 2.63 3.20 2.52 3.20
19951.04 3.48 0.80 0.27 0.22 0.46 0.75 0.77 0.58 1.78 5.36 1.10 5.36
19961.47 1.99 0.45 1.62 0.94 0.33 0.32 0.48 0.28 1.18 2.03 2.21 2.21
19972.91 1.14 3.09 1.26 0.43 0.90 1.95 0.28 1.41 2.31 0.82 2.07 3.09
19981.34 0.61a0.52 0.47 1.10 0.39 0.36 0.05 0.28 0.88 2.35 2.55 2.55a
19991.65 1.10 0.62 0.14 0.52 0.34 0.34 0.63 0.65 2.32 3.58 2.02 3.58
20001.73 1.60 1.03 0.51 0.49 1.12 0.88 0.24 1.21 0.92 1.45 2.11 2.11
20011.78 0.62 1.21 0.42 1.55 0.38 0.17 0.56 0.22 1.58 2.83 2.90 2.90
20022.91 5.42 2.35 1.92 0.56 0.83 0.65 0.21 0.32 0.08 1.10 1.04 5.42
20032.08 0.85 2.09 0.58 0.43 0.19 0.14 0.32 0.49 6.85 3.54 0.93 6.85
20042.07 0.23 1.41 0.19 0.38 0.26 0.13 1.62 1.36 0.65 2.75 3.29 3.29
20053.00 0.59 1.51 1.27 0.28 0.25 0.77 0.25 2.32 1.29 0.79 1.49 3.00
20062.35 1.28 0.94 1.08 0.18 0.43 0.30 0.05 0.35 0.23 4.16 2.31 4.16
20071.81 1.59 3.57 1.41 0.73 0.42 0.57 0.25 0.45 1.09 1.61 3.14 3.57
20081.62 1.43 1.02 0.37 0.53 0.22 0.15 0.76 0.33 1.26 2.29 1.43 2.29
20094.13 0.42 0.79 1.21 0.93 0.13 0.00 0.70 0.76 1.61 2.46 1.14 4.13
20101.07 0.50 1.11 1.06 1.30 0.56 0.13 0.48 1.00 2.03 1.44 2.76c2.76c
20112.13a1.16 1.43 1.57 0.38 0.28 0.20 0.21 2.07 2.39 2.90 2.16 2.90a
20121.62 1.32 1.33 1.59 0.55 0.47 0.42 0.07 0.14 1.83 1.83 1.21 1.83
20133.01 0.77 0.96 0.83 0.77 0.36 0.07 0.73 2.21 1.11 1.54 1.22 3.01
20142.13 1.48 2.95 0.68 0.45 0.79 1.11 0.66 1.00 1.23 3.33 1.43 3.33
20152.08 2.03 1.82 0.58 0.18 0.76 0.72 1.50h0.72 1.61 3.35 2.94 3.35h
20161.88 1.60 1.14 0.58 0.60 0.31 0.37 0.19 0.81 3.38 1.45 1.18 3.38
20171.76 1.54 1.43 0.61 0.61 0.55 0.00 0.00 0.29 3.68 2.82 1.57 3.68
20181.70 1.12 1.02 1.20 0.18 0.57 0.62 0.12 0.92 1.45 1.92 1.66 1.92
20191.60 0.76 0.50 2.16 0.65 0.59 0.49 0.19 0.69 1.21 1.06 2.80 2.80
20203.30 3.70 1.49 0.39 1.16 0.40 0.10 0.23 1.81 1.41 1.56 2.11 3.70
20212.10 1.76 1.22 0.47 0.80 0.52 0.21 0.70 2.63 3.92 3.12 1.60 3.92
20223.42b1.58 2.61 1.66 0.80 1.21 0.35 0.01 0.51 1.70 1.90 5.20b5.20d
20230.97 1.28 0.62 0.86 0.46 0.17 0.28 0.32 0.67 0.67 1.18 3.91 3.91
20241.42 1.97 0.57 0.66h-----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN1.95 1.50 1.33 0.94 0.66 0.54 0.46 0.45 0.87 1.56 2.18 2.02 3.17
S.D.0.77 0.89 0.71 0.63 0.41 0.36 0.40 0.34 0.58 1.08 1.03 0.92 1.00
SKEW0.43 1.69 1.15 1.14 1.66 1.94 1.98 0.90 1.19 2.19 0.67 1.19 1.21
MAX4.13 5.42 3.57 2.82 2.48 2.19 1.95 1.62 2.63 6.85 5.36 5.20 6.85
MIN0.42 0.23 0.12 0.14 0.15 0.11 0.00 0.00 0.09 0.08 0.33 0.63 1.83
YRS64 63 64 61 63 63 63 62 64 64 64 64 59