Table of contents for Statistical characteristics of storm interevent time, depth, and duration for eastern New Mexico, Oklahoma, and Texas / by William H. Asquith ... [et al.].

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Contents
Abstract 	 1
Introduction 	 2
Purpose and Scope 	 2
Previous Studies 	 3
Storm Research Sponsored by the Texas Department of Transportation 	 3
Other Studies 	 4
Database of Hourly Rainfall 	 5
Analysis of Station-Specific Statistical Characteristics of Hourly Rainfall 	 6
Minimum Interevent Time of Rainfall 	 6
Storm Interevent Time and Distribution of Depth and Duration 	 8
Quantile Functions of Storm Depth and Duration 	 12
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 	 16
Regionalization of Storm Statistics 	 16
Maps of Countywide Mean Storm Interevent Time, Depth, and Duration 	 18
Tables of Countywide Mean Storm Interevent Time, Depth, and Duration 	 19
Example Applications 	 20
Site-Specific Approach 	 21
Example 1: Estimation of Storm Occurrence 	 21
Example 2: Estimation of Interevent Times of Storms 	 21
Example 3: Estimation of the Empirical Distribution of Storm Depth 	 22
Example 4: Estimation of the Continuous Distribution of Storm Depth 	 23
Example 5: Statistical Simulation of Rainfall Intensity 	 24
Regional Approach 	 25
Example 6: Regional Estimation of Storm Occurrence 	 25
Example 7: Computation of the Storm Captured Percentage 	 25
Example 8: Regional Estimation of the Empirical Distribution of Storm Depth 	 26
Example 9: Estimation of the Uncertainty of a Regional Estimate of a Storm-Depth 
Percentile 	 26
Example 10: Estimation of the Expected Storage in a BMP Using Countywide Mean 
Storm Interevent Time, Depth, and Duration 	 27
Summary 	 29
Selected References 	 33
Appendix A-L-moments, Probability-Weighted Moments, and Sample Estimation 	 83
L-moments 	 85
Probability-Weighted Moments 	 86
Sample Estimates 	 88
Appendix B-Storm Statistics for Hourly Rainfall Stations in Eastern New Mexico 	 91
B-1.1.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 6-Hour
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 93
B-1.2.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 8-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 93
B-1.3.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 12-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 94
B-1.4.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 18-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 94
B-1.5.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 24-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 95
B-1.6.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 48-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 95
B-1.7.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 72-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Eastern New Mexico 	 96
B-2.1.	L-moments of Storm Depth Defined by 6-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 97
B-2.2.	L-moments of Storm Depth Defined by 8-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 98
B-2.3.	L-moments of Storm Depth Defined by 12-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in eastern New Mexico 	 99
B-2.4.	L-moments of Storm Depth Defined by 18-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 100
B-2.5.	L-moments of Storm Depth Defined by 24-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 101
B-2.6.	L-moments of Storm Depth Defined by 48-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 102
B-2.7.	L-moments of Storm Depth Defined by 72-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 103
B-3.1.	L-moments of Storm Duration Defined by 6-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 104
B-3.2.	L-moments of Storm Duration Defined by 8-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 105
B-3.3.	L-moments of Storm Duration Defined by 12-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 106
B-3.4.	L-moments of Storm Duration Defined by 18-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 107
B-3.5.	L-moments of Storm Duration Defined by 24-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 108
B-3.6.	L-moments of Storm Duration Defined by 48-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 109
B-3.7.	L-moments of Storm Duration Defined by 72-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Eastern New Mexico 	 110
B-4.1.	Empirical Distribution of Storm Depth Defined by 6-Hour Minimum Interevent Time for 
	Hourly Rainfall Stations in Eastern New Mexico 	 111
B-4.2.	Empirical Distribution of Storm Depth Defined by 8-Hour Minimum Interevent Time for 
	Hourly Rainfall Stations in Eastern New Mexico 	 112
B-4.3.	Empirical Distribution of Storm Depth Defined by 12-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 113
B-4.4.	Empirical Distribution of Storm Depth Defined by 18-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 114
B-4.5.	Empirical Distribution of Storm Depth Defined by 24-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 115
B-4.6.	Empirical Distribution of Storm Depth Defined by 48-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 116
B-4.7.	Empirical Distribution of Storm Depth Defined by 72-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 117
B-5.1.	Empirical Distribution of Storm Duration Defined by 6-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 118
B-5.2.	Empirical Distribution of Storm Duration Defined by 8-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 119
B-5.3.	Empirical Distribution of Storm Duration Defined by 12-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 120
B-5.4.	Empirical Distribution of Storm Duration Defined by 18-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 121
B-5.5.	Empirical Distribution of Storm Duration Defined by 24-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 122
B-5.6.	Empirical Distribution of Storm Duration Defined by 48-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 123
B-5.7.	Empirical Distribution of Storm Duration Defined by 72-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Eastern New Mexico 	 124
Appendix C-Storm Statistics for Hourly Rainfall Stations in Oklahoma 	 125
C-1.1.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 6-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 127
C-1.2.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 8-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 128
C-1.3.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 12-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 129
C-1.4.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 18-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 130
C-1.5.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 24-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 131
C-1.6.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 48-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 132
C-1.7.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 72-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Oklahoma 	 133
C-2.1.	L-moments of Storm Depth Defined by 6-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 134
C-2.2.	L-moments of Storm Depth Defined by 8-Hour Minimum Interevent Time for Hourly 
	rainfall stations in Oklahoma 	 135
C-2.3.	L-moments of Storm Depth Defined by 12-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 136
C-2.4.	L-moments of Storm Depth Defined by 18-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 137
C-2.5.	L-moments of Storm Depth Defined by 24-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 138
C-2.6.	L-moments of Storm Depth Defined by 48-Hour Minimum Interevent Time for hourly 
	Rainfall Stations in Oklahoma 	 139
C-2.7.	L-moments of Storm Depth Defined by 72-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 140
C-3.1.	L-moments of Storm Duration Defined by 6-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 141
C-3.2.	L-moments of Storm Duration Defined by 8-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 142
C-3.3.	L-moments of Storm Duration Defined by 12-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 143
C-3.4.	L-moments of Storm Duration Defined by 18-Hour Minimum Interevent Time for Hourly
	Rainfall Stations in Oklahoma 	 144
C-3.5.	L-moments of Storm Duration Defined by 24-Hour Minimum Interevent Time for Hourly
	Rainfall Stations in Oklahoma 	 145
C-3.6.	L-moments of Storm Duration Defined by 48-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 146
C-3.7.	L-moments of Storm Duration Defined by 72-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Oklahoma 	 147
C-4.1.	Empirical Distribution of Storm Depth Defined by 6-Hour Minimum Interevent Time for 
	Hourly Rainfall Stations in Oklahoma 	 148
C-4.2.	Empirical Distribution of Storm Depth Defined by 8-Hour Minimum Interevent Time for 
	Hourly Rainfall Stations in Oklahoma 	 149
C-4.3.	Empirical Distribution of Storm Depth Defined by 12-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 150
C-4.4.	Empirical Distribution of Storm Depth Defined by 18-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 151
C-4.5.	Empirical Distribution of Storm Depth Defined by 24-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 152
C-4.6.	Empirical Distribution of Storm Depth Defined by 48-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 153
C-4.7.	Empirical Distribution of Storm Depth Defined by 72-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 154
C-5.1.	Empirical Distribution of Storm Duration Defined by 6-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 155
C-5.2.	Empirical Distribution of Storm Duration Defined by 8-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 156
C-5.3.	Empirical Distribution of Storm Duration Defined by 12-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 157
C-5.4.	Empirical Distribution of Storm Duration Defined by 18-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 158
C-5.5.	Empirical Distribution of Storm Duration Defined by 24-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 159
C-5.6.	Empirical Distribution of Storm Duration Defined by 48-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 160
C-5.7.	Empirical Distribution of Storm Duration Defined by 72-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Oklahoma 	 161
Appendix D-Storm Statistics for Hourly Rainfall Stations in Texas 	 163
D-1.1.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 6-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 165
D-1.2.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 8-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 167
D-1.3.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 12-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 169
D-1.4.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 18-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 171
D-1.5.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 24-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 173
D-1.6.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 48-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 175
D-1.7.	Number of Storms, Total Duration, and Storm Interevent Time Defined by 72-Hour 
	Minimum Interevent Time for Hourly Rainfall Stations in Texas 	 177
D-2.1.	L-moments of Storm Depth Defined by 6-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 179
D-2.2.	L-moments of Storm Depth Defined by 8-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations In Texas 	 183
D-2.3.	L-moments of Storm Depth Defined by 12-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 187
D-2.4.	L-moments of Storm Depth Defined by 18-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 191
D-2.5.	L-moments of Storm Depth Defined by 24-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 195
D-2.6.	L-moments of Storm Depth Defined by 48-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 199
D-2.7.	L-moments of Storm Depth Defined by 72-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 203
D-3.1.	L-moments of Storm Duration Defined by 6-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 207
D-3.2.	L-moments of Storm Duration Defined by 8-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 211
D-3.3.	L-moments of Storm Duration Defined by 12-Hour Minimum Interevent Time for Hourly 
	rainfall stations in Texas 	 215
D-3.4.	L-moments of Storm Duration Defined by 18-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 219
D-3.5.	L-moments of Storm Duration Defined by 24-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 223
D-3.6.	L-moments of Storm Duration Defined by 48-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 227
D-3.7.	L-moments of Storm Duration Defined by 72-Hour Minimum Interevent Time for Hourly 
	Rainfall Stations in Texas 	 231
D-4.1.	Empirical Distribution of Storm Depth Defined by 6-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 235
D-4.2.	Empirical Distribution of Storm Depth Defined by 8-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 239
D-4.3.	Empirical Distribution of Storm Depth Defined by 12-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 243
D-4.4.	Empirical Distribution of Storm Depth Defined by 18-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 247
D-4.5.	Empirical Distribution of Storm Depth Defined by 24-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 251
D-4.6.	Empirical Distribution of Storm Depth Defined by 48-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 255
D-4.7.	Empirical Distribution of Storm Depth Defined by 72-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 259
D-5.1.	Empirical Distribution of Storm Duration Defined by 6-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 263
D-5.2.	Empirical Distribution of Storm Duration Defined by 8-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 267
D-5.3.	Empirical Distribution of Storm Duration Defined by 12-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 271
D-5.4.	Empirical Distribution of Storm Duration Defined by 18-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 275
D-5.5.	Empirical Distribution of Storm Duration Defined by 24-Hour Minimum Interevent time 
	for Hourly Rainfall Stations in Texas 	 279
D-5.6.	Empirical Distribution of Storm Duration Defined by 48-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 283
D-5.7.	Empirical Distribution of Storm Duration Defined by 72-Hour Minimum Interevent Time 
	for Hourly Rainfall Stations in Texas 	 287
Glossary 	 291
Figures
1-3.	Maps showing locations of National Weather Service hourly rainfall stations in: 
1.	Eastern New Mexico 	 6
2.	Oklahoma 	 6
3.	(A) Western Texas, (B) northeastern Texas, and (C) southeastern Texas 	 6
4.	Graphs showing empirical distributions of (A) storm depth and (B) storm duration for 3,331 
	storm events defined by an 8-hour minimum interevent time for Abilene Regional Airport, 
	Texas (station 0016) 	 9
5.	L-moment diagram at two scales (A and B) showing relation between L-skew and 
	L-kurtosis of the distributions of storm depth and storm duration defined by the 8-hour 
	minimum interevent time and theoretical relations for selected probability distributions 	 10
6-9.	 Graphs showing: 
6.	Dimensionless kappa distribution frequency curves for (A) storm depth and (B) storm 
	duration for the selected minimum interevent times in Texas 	 15
7.	Dimensionless kappa distribution frequency curves for storm depth and storm duration 
	for 24-hour minimum interevent time for eastern New Mexico, Oklahoma, and Texas 	 15
8.	Dimensionless exponential gamma and kappa distributions of storm depth for 
	24-hour minimum interevent time in Texas, graphed with (A) a linear y-axis scale and 
	(B) a base-10 log y-axis scale 	 15
9.	Storm depth and storm duration for 3,331 storm events defined by an 8-hour 
	minimum interevent time for Abilene Regional Airport, Texas (station 0016) 	 16
10-16.	Maps showing mean storm interevent time defined by: 
10.	6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
11.	8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
12.	12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
13.	18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
14.	24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
15.	48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
16.	72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
17-23.	Maps showing mean storm depth defined by: 
17.	6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
18.	8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
19.	12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
20.	18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
21.	24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
22.	48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
23.	72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
24-30.	Maps showing mean storm duration defined by: 
24.	6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
25.	8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
26.	12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
27.	18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
28.	24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
29.	48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
30.	72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas 	 18
Tables
1-3.	National Weather Service hourly rainfall stations in: 
1.	Eastern New Mexico 	 6
2.	Oklahoma 	 6
3.	Texas 	 6
4.	Selected storm statistics for station 4570 Jayton, Texas, illustrating influence of minimum 
	interevent time on statistics 	 7
5-6.	Regionwide or statewide record-length, weighted-average: 
5.	Storm-depth L-moments 	 10
6.	Storm interevent time and storm-duration L-moments 	 10
7-8. 	Dimensionless gamma and kappa distributions fit to record-length, weighted-average: 
7.	Storm-depth L-moments 	 14
8.	Storm-duration L-moments 	 14
9-11.	Summary statistics and diagnostic statistics of mean: 
9.	Storm-interevent-time maps for each minimum interevent time 	 18
10.	Storm-depth maps for each minimum interevent time 	 18
11.	Storm-duration maps for each minimum interevent time 	 18
12-20.	Mean storm: 
12.	Interevent time by county for eastern New Mexico 	 20
13.	Depth by county for eastern New Mexico 	 20
14.	Duration by county for eastern New Mexico 	 20
15.	Interevent time by county for Oklahoma 	 20
16.	Depth by county for Oklahoma 	 20
17.	Duration by county for Oklahoma 	 20
18.	Interevent time by county for Texas 	 20
19.	Depth by county for Texas 	 20
20.	Storm duration by county for Texas 	 20
21.	Example simulations of storm interevent time from example 2 using 24-hour minimum 
	interevent time for station 0211 Amarillo Weather Service Office Airport, Texas 	 22
22.	Distribution of storm depth for examples 3 and 4 based on site-specific statistics 
	for station 4311 Houston Alief, Texas 	 22
23.	Regional values for selected storm-depth percentiles in Randall County, Texas 	 26
Conversion Factors 
Multiply	By	To obtain
inch (in.)		25.4	millimeter (mm)
foot (ft)		0.3048	meter (m)

Library of Congress Subject Headings for this publication:

Rainstorms -- New Mexico -- Statistics.
Rainstorms -- Oklahoma -- Statistics.
Rainstorms -- Texas -- Statistics.