NOAA Atlas 14 Precipitation frequency estimates (inches)
Point Estimates
Data series, Partial duration maxima
State, Maryland
Station, Montgomery
Lon (dd), -77.2120
Lat (dd), 39.1913
Elev (feet), 406
MEAN PRECIPITATION FREQUENCY ESTIMATES
Freq (yr),5-min,10-min,15-min,30-min,60-min,120-min,3-hr,6-hr,12-hr,24-hr,2-day,4-day,7-day,10-day,20-day,30-day,45-day,60-day
1, 0.34, 0.54, 0.68, 0.93, 1.16, 1.37, 1.48, 1.82, 2.23, 2.57, 2.98, 3.33, 3.86, 4.42, 5.98, 7.37, 9.25,11.03
2, 0.41, 0.65, 0.82, 1.13, 1.42, 1.67, 1.79, 2.21, 2.69, 3.10, 3.61, 4.03, 4.65, 5.31, 7.12, 8.71,10.91,12.97
5, 0.48, 0.78, 0.98, 1.40, 1.79, 2.12, 2.27, 2.79, 3.41, 3.99, 4.62, 5.15, 5.88, 6.62, 8.60,10.36,12.74,14.98
10, 0.54, 0.87, 1.10, 1.59, 2.07, 2.47, 2.66, 3.27, 4.02, 4.77, 5.49, 6.11, 6.93, 7.73, 9.80,11.69,14.16,16.50
25, 0.61, 0.98, 1.24, 1.84, 2.45, 2.97, 3.21, 3.98, 4.96, 5.97, 6.81, 7.56, 8.51, 9.34,11.48,13.52,16.03,18.47
50, 0.67, 1.06, 1.35, 2.03, 2.75, 3.39, 3.67, 4.59, 5.79, 7.03, 7.95, 8.81, 9.87,10.69,12.84,14.98,17.45,19.94
100, 0.72, 1.15, 1.45, 2.22, 3.06, 3.83, 4.17, 5.25, 6.72, 8.23, 9.22,10.21,11.36,12.14,14.25,16.46,18.84,21.34
200, 0.77, 1.23, 1.55, 2.41, 3.38, 4.30, 4.70, 5.97, 7.75, 9.60,10.64,11.76,13.02,13.72,15.71,18.00,20.20,22.69
500, 0.84, 1.33, 1.68, 2.66, 3.82, 4.97, 5.46, 7.05, 9.34,11.70,12.79,14.11,15.50,16.01,17.74,20.08,21.98,24.39
1000, 0.90, 1.41, 1.77, 2.86, 4.17, 5.53, 6.10, 7.96,10.71,13.55,14.63,16.13,17.61,17.95,19.35,21.71,23.30,25.63