116°0'0"W
114°0'0"W
112°0'0"W
110°0'0"W
108°0'0"W
106°0'0"W
104°0'0"W
6
0
0
0
E
2
Scobey
Plentywood
2.7
7
Cut Bank
5
Havre Chinook
6
Libby
Shelby
Chester
Kalispell
Malta Conrad Glasgow
7
10
48°0'0"N
Wolf Point
48°0'0"N
Thompson Falls
Polson
20
Choteau Fort Benton Sidney
15
Superior
Great Falls Jordan Stanford Lewistown Winnett
Circle
8
Missoula
E
9
1.4
Glendive Wibaux
Terry
E
46°0'0"N
"
%g
30 25 20 15 10 9 8 7 6 5 4 3 2 1
11.4
Helena White Sulphur Springs Harlowton Boulder Townsend
3
Roundup Ryegate Hysham Forsyth
46°0'0"N
Hamilton
Philipsburg
Deer Lodge
Miles City
Baker
4
Anaconda Butte
E
19
2
Big Timber
8
Billings Columbus Hardin
Ekalaka
15
Peak acceleration expressed as a percent of gravity
7
E
17.9
Bozeman
Livingston
Broadus Virginia City
Dillon
20
Red Lodge
25
E0 3
30.3
0
50
Scale 1:1,250,000
100
E 2.7
10
Point value of peak acceleration expressed as a percent of gravity Contour of peak acceleration expressed as a percent of gravity
150 Kilometers
0
50
100
Miles 150
Note: Contours are irregularly spaced
44°0'0"N
Peak Horizontal Acceleration With 10 Percent Probability of Exceedance in 50 Years
Source and Reference Material: USGS - http://pubs.usgs.gov/sim/2005/2883/pdf/2883-1.pdf
Seismic-Hazard Map for the State of Montana
108°0'0"W 106°0'0"W
44°0'0"N
GIS Bureau
114°0'0"W
112°0'0"W
110°0'0"W