FLOOD08329

• County: Statewide
• Community: State of Colorado
• Basin: Statewide
• Title: Probable Maximum Precipitation Estimates, United States Between the Continental Divide and the 103rd Meridian
• Date: 6/1/1988
• Prepared By: COE
• Floodplain - Doc Type: Educational/Technical/Reference Information

TABLE OF OONTENTS

PREFACE TO REVISED EDITION.......................................................................................
.ABSTR.ACf......................................................................................................................... ..

1.
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9

2.
2.1
2.2
2.3
2.4
2.4.1
2.4.1.1
2.4.1.2
2.4.1.3
2.4.1.4

2.4.1.5

2.4.1.6
2.4.1.7
2.4.1.8
2.4.1.9

2.4.2
2.4.2.1

2.4.2.2
2.5
2.5.1
2.5.1.1
2.5.2

2.5.2.1
2.5.2.2
2.5.3

3.
3.1
3.2
3.2.1
3.2.2
3.2.3

Introduction........................................................................................... ..
Background. .. .. .. .. .. .. .. .. .. .. .. .. .. .... .. .. .. .... .. .. .. .... .. .. .. ...... .. .. .. .. .. .. .. .... .. .. .. .. .. ..
Authorization...................................................... ~..............................
Study region..........................................................................................
Method of study....................................................................................
Definitions......................................................................................... ..

Terrain review.....................................................................................

for the CD-I03 region.............
52 to PMP from this study.........

the report...................................

Previous PMP estimates
Application of HMR No.
Organization of

Meteorology of major storms

in the CD-I03 region.

Introduction. . . . . . . . . .. . . . . . . .. ... . ... . . . . .. . .. ... .. . . . . .
Major storms of record...................................
Important storms.........................................
Meteorological analyses of storms........................
Extratropical storms...................................
Warrickt Montana - June 6-8, 1906 (10)...............
Penrose, Colorado - June 2-6, 1921 (31)..............
Springbrook, Montana - June 17-21, 1921 (32).........
Savageton, Wyoming - September 27-0ctober 1, 1923
(38).............................................. .

Cherry Creek (47) - Hale (101), Colorado -
May 30-31, 1935....................................
Gibson Dam, Montana - June 6-8, 1964 (75)............
Plum Creek, CO - June 13-20, 1965 (76)...............
Big Elk Meadow, Colorado - May 4-8, 1969 (77)........
Big Thompson, Colorado - July 31-
August 1,1976 (81)................................
Tropical storms........................................
Rancho Grande, New Mexico - August 29-
September 1, 1942 (60).............................
Vie Pierce, Texas - June 23-28, 1954 (112)...........
Storm classification.....................................
Storm classification system............................
Characteristics of storm classes.....................
Example of application of storm classification

sys tern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convective/cyclonic.................,................
Simple/ complex. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Classification of storms by type.......................

Terrain classification system..............................
Introduction. . . . .. . . . . . . . . . . . .. . .... .. . . . . . . . . . . .. . .. . .. .

Classification...........................................
Orographic/nonorographic line..........................
Fi rs t upslopes.........................................

Sheltered least orographic subdivisions................

iii

Page
xvi
1

1
1
2
3
3
5
7
7
7
9

11
11
11
15
17
17
17
21
23

26

30
33
36
42

44
47

47
50
55
55
55

57
57
59
59

64
64
64
64
65
66