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APPENDIX E

POINT PRECIPITATION FREQUENCY ESTIMATES

POINT PRECIPITATION
FREQUENCY ESTIMATES
FROM NOAA ATLAS 14y

MOORESVILLE, NORTH CAROLINA (31-5814) 35.6 N 80.8333 W 898 feet

Precipitation Intensity Estimates (in/hr)
ARI*
(years) 		5
min 		10
min 		15
min 		30
min 		60
min 		120
min 		3
hr 		6
hr 		12
hr 		24
hr 		48
hr 		4
day 		7
day 		10
day 		20
day 		30
day 		45
day 		60
day
1 4.60 3.67 3.06 2.09 1.31 0.76 0.54 0.33 0.20 0.12 0.07 0.04 0.03 0.02 0.01 0.01 0.01 0.01
2 5.42 4.33 3.63 2.51 1.57 0.92 0.65 0.40 0.24 0.14 0.08 0.05 0.03 0.02 0.02 0.01 0.01 0.01
5 6.34 5.08 4.28 3.04 1.95 1.14 0.81 0.50 0.30 0.18 0.10 0.06 0.04 0.03 0.02 0.02 0.01 0.01
10 7.00 5.60 4.72 3.42 2.23 1.31 0.94 0.58 0.35 0.21 0.12 0.07 0.04 0.03 0.02 0.02 0.01 0.01
25 7.75 6.17 5.22 3.86 2.57 1.53 1.11 0.69 0.41 0.24 0.14 0.08 0.05 0.04 0.02 0.02 0.02 0.01
50 8.27 6.58 5.56 4.18 2.83 1.70 1.24 0.77 0.46 0.28 0.16 0.09 0.05 0.04 0.03 0.02 0.02 0.01
100 8.75 6.95 5.86 4.48 3.09 1.87 1.38 0.86 0.52 0.31 0.17 0.10 0.06 0.05 0.03 0.02 0.02 0.02
200 9.17 7.27 6.12 4.76 3.34 2.04 1.52 0.95 0.58 0.34 0.19 0.11 0.07 0.05 0.03 0.02 0.02 0.02
500 9.66 7.64 6.41 5.10 3.66 2.26 1.70 1.07 0.65 0.38 0.22 0.12 0.07 0.06 0.03 0.03 0.02 0.02
1000 9.98 7.87 6.58 5.33 3.89 2.42 1.85 1.16 0.72 0.42 0.24 0.13 0.08 0.06 0.04 0.03 0.02 0.02

 

These precipitation frequency estimates are based on a partial duration series. ARI is Average Recurrence Interval.

Source: "Precipitation-Frequency Atlas of the United States" NOAA Atlas 14, Volume 2, Version 3 G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M. Yekta, and D. Riley NOAA, National Weather Service, Silver Spring, Maryland, 2004 Extracted: Wed May 2 2007