greenLRAppendix C - 2004 Plan Implementation Status
Appendix E - Hazard Profile DatagreenR

Appendices

2009 Marshall County Multi-Hazard Mitigation Plan


HMPC Hazard Identification and Ratings

Scope and Methodology

The HMPC Hazard Identification Exercises

The tables in this Appendix show the results of the Hazard Mitigation Planning Committee (HMPC) responses to hazard identification exercises presented at its March 12, 2009, committee meeting. These exercises serve as a resource to help identify the hazards affecting each jurisdiction and determine the probability and extents (severity or magnitude) and how these measures of community impacts vary among Marshall County jurisdictions. These responses are those perceived by the HMPC membership, based on local knowledge and experience of the members and are not necessarily supported by other resources evaluated in Section 5 - Risk Assessment. The averages of the ratings compare how the location and impacts of hazards could vary among the jurisdictions. The same exercise was administered during the drafting of the 2004 plan for natural hazards, and the results are compared. The 2009 and 2004 results are very similar, on average. The 2004 plan did not address man-made hazards.

Key.

The following key to the tables describes the hazard ratings:

LOCATION - WHETHER THE JURISDICTION IS AFFECTED BY THE HAZARD

1 = YES

0 = NO

PROBABILITY - THE LIKELIHOOD THAT THE HAZARD WOULD OCCUR IN THIS JURSIDICTION

5 - VERY HIGH

4 - HIGH

3 - MEDIUM

2 - LOW

1 - MINIMUM OR NONE

EXTENT - THE SEVERITY OR MAGNITUDE OF THE HAZARD SHOULD IT OCCUR IN THIS JURISDICTION

5 - VERY HIGH

4 - HIGH

3 - MEDIUM

2 - LOW

1 - MINIMUM OR NONE


Summary of Results

Location of natural hazards

Probability of natural hazards

Extents of natural hazards

Location of man-made hazards

Probability of man-made hazards

Extent of man-made hazards


Table D-1. Marshall County HMPC Identification and Ratings of Natural Hazards

Natural Hazard

Geographic Area

Location (2004)

Location (2009)

Probability (2004)

Probability (2009)

Extent (2004)

Extent (2009)

Tornadoes

Marshall County

1

1

5

5

5

5

Albertville

1

1

4

4

5

5

Arab

1

1

5

5

5

5

Boaz

1

1

4

3

4

4

Douglas

1

1

5

5

5

5

Grant

1

1

5

5

5

5

Guntersville

1

1

3

3

2

2

Union Grove

1

1

5

4

5

4

Average

1

1

4.5

4.3

4.5

4.4

Severe Storms

Marshall County

1

1

5

5

5

5

Albertville

1

1

4

4

5

5

Arab

1

1

5

5

5

5

Boaz

1

1

4

3

4

3

Douglas

1

1

5

5

5

5

Grant

1

1

5

5

5

5

Guntersville

1

1

3

3

2

2

Union Grove

1

1

5

4

5

4

Average

1

1

4.5

4.3

4.5

4.3

Floods

Marshall County

1

1

3

3

4

4

Albertville

0

0

-

-

-

-

Arab

1

1

3

5

3

3

Boaz

1

1

1

1

1

1

Douglas

1

1

3

2

4

3

Grant

1

1

3

3

3

3

Guntersville

1

1

1

1

1

1

Union Grove

1

1

3

1

4

1

Average

0.9

0.9

2.4

2.3

2.9

2.3

Winter storms/freezes

Marshall County

1

1

3

3

4

4

Albertville

1

1

1

1

2

2

Arab

1

1

3

3

5

5

Boaz

1

1

3

3

3

3

Douglas

1

1

3

3

4

4

Grant

1

1

2

1

3

3

Guntersville

1

1

3

3

3

3

Union Grove

1

1

3

2

4

3

Average

1

1

2.7

2.4

3.5

3.4

Hurricanes

Marshall County

1

1

3

3

3

3

Albertville

1

-

2

2

4

2

Arab

1

1

2

2

2

2

Boaz

0

0

-

-

-

-

Douglas

1

1

2

2

3

3

Grant

0

-

-

-

-

-

Guntersville

1

1

2

2

2

2

Union Grove

1

1

2

1

3

1

Average

0.7

0.8

2.2

2

2.9

2.2

Droughts/Heat Waves

Marshall County

1

1

3

3

3

3

Albertville

1

1

3

3

4

4

Droughts/Heat Waves (cont'd)

Arab

1

1

3

4

4

4

Boaz

1

1

1

3

1

3

Douglas

1

1

2

3

3

3

Grant

1

1

2

3

3

3

Guntersville

1

1

3

3

3

3

Union Grove

1

1

2

2

3

3

Average

1

1

2.4

3

3

3.3

Wildfires

Marshall County

1

1

2

2

3

3

Albertville

1

1

1

1

-

2

Arab

1

1

3

3

3

2

Boaz

0

0

-

-

-

-

Douglas

1

1

2

3

3

3

Grant

1

1

2

3

3

3

Guntersville

0

1

2

2

1

2

Union Grove

1

-

2

-

3

-

Average

0.7

0.9

2

2.3

2.7

2.5

Dam/levee failures

Marshall County

1

1

1

1

5

5

Albertville

0

0

-

-

-

-

Arab

1

-

1

2

3

2

Boaz

0

0

-

-

-

-

Douglas

1

1

2

2

3

3

Grant

0

-

-

-

-

-

Guntersville

1

1

1

1

1

1

Union Grove

1

1

1

1

5

1

Average

0.6

0.6

1.2

1.4

3.4

2.4

Landslides

Marshall County

1

1

2

2

3

3

Albertville

0

0

-

-

-

-

Arab

1

1

2

2

3

2

Boaz

0

0

-

-

-

-

Douglas

1

1

2

2

3

3

Grant

0

-

-

-

-

-

Guntersville

1

1

1

1

1

1

Union Grove

1

1

1

1

3

1

Average

0.6

0.7

1.6

1.6

2.6

2

Earthquakes

Marshall County

1

1

2

2

3

3

Albertville

1

1

1

1

1

1

Arab

1

1

1

1

1

1

Boaz

0

0

-

1

-

1

Douglas

1

1

2

3

3

3

Grant

0

-

1

1

2

5

Guntersville

1

1

2

2

1

1

Union Grove

1

1

1

-

3

-

Average

0.7

0.8

1.4

1.6

2

2.1

Sinkholes

Marshall County

1

1

2

2

3

3

Albertville

1

1

1

1

1

1

Arab

1

1

2

2

3

3

Boaz

0

0

-

-

-

-

Douglas

1

1

2

2

3

2

Sinkholes (cont'd)

Grant

1

1

2

1

2

1

Guntersville

0

0

1

1

1

1

Union Grove

1

1

1

1

3

1

Average

0.7

0.7

1.6

1.4

2.3

1.7


Table D-2. Marshall County HMPC Identification and Ratings of Man-Made Hazards

Man-Made Hazard

Geographic Area

Location (2009)

Probability (2009)

Extent (2009)

Industrial (Fixed)

Marshall County

1

4

4

Albertville

1

-

1

Arab

1

3

5

Boaz

1

3

3

Douglas

1

3

3

Grant

1

4

4

Guntersville

1

2

2

Union Grove

1

2

5

Average

1

3

3.4

Industrial (Transp.)

Marshall County

1

4

4

Albertville

1

2

-

Arab

1

3

5

Boaz

1

4

4

Douglas

1

3

4

Grant

1

5

5

Guntersville

1

2

2

Union Grove

1

2

5

Average

1

3.1

4.1

Controls Failure

Marshall County

-

2

3

Albertville

-

-

-

Arab

-

-

-

Boaz

1

1

1

Douglas

0

1

1

Grant

1

3

4

Guntersville

-

-

-

Union Grove

-

-

-

Average

0.7

1.8

2.3

Nuclear Attack

Marshall County

1

1

5

Albertville

1

2

-

Arab

1

1

5

Boaz

0

-

-

Douglas

1

3

4

Grant

1

3

5

Guntersville

-

-

-

Union Grove

-

-

-

Average

0.8

2.0

4.8

Explosive Blast

Marshall County

1

2

4

Albertville

-

2

-

Arab

1

3

5

Boaz

1

1

1

Douglas

1

3

3

Grant

1

4

5

Guntersville

-

-

-

Union Grove

-

-

-

Average

1.0

2.5

3.6

Disease/Pandemic

Marshall County

1

3

5

Albertville

-

-

-

Arab

1

2

5

Disease/Pandemic (cont'd)

Boaz

1

1

1

Douglas

1

4

4

Grant

1

3

5

Guntersville

-

-

-

Union Grove

-

-

-

Average

1.0

2.6

4.0

Chemical Attack

Marshall County

1

1

5

Albertville

-

2

-

Arab

1

2

3

Boaz

0

-

-

Douglas

1

2

4

Grant

1

4

5

Guntersville

-

-

-

Union Grove

1

1

5

Average

0.8

2

4.4

Biological Attack

Marshall County

1

1

5

Albertville

-

2

-

Arab

1

2

3

Boaz

0

-

-

Douglas

0

1

4

Grant

1

3

5

Guntersville

-

-

-

Union Grove

0.6

1.7

4.4

Average

0.6

1.8

4.3

Radiological Attack

Marshall County

1

1

5

Albertville

-

-

-

Arab

1

3

4

Boaz

0

-

-

Douglas

0

1

4

Grant

1

3

5

Guntersville

-

-

-

Union Grove

1

1

5

Average

0.6

1.8

4.6

Agriterrorism

Marshall County

1

3

4

Albertville

-

2

-

Arab

1

2

2

Boaz

0

-

-

Douglas

1

4

4

Grant

1

4

5

Guntersville

-

-

-

Union Grove

-

-

-

Average

0.8

3.0

3.8

Armed Attack

Marshall County

1

1

5

Albertville

-

2

-

Arab

1

2

5

Boaz

0

-

-

Douglas

1

3

3

Grant

1

3

5

Armed Attack (cont'd)

Guntersville

-

-

-

Union Grove

-

-

-

Average

0.8

2.2

4.5

Cyber Attack

Marshall County

1

2

3

Albertville

-

2

-

Arab

1

3

5

Boaz

1

1

1

Douglas

0

1

1

Grant

1

3

5

Guntersville

-

-

-

Union Grove

-

-

-

Average

0.8

2.0

3.0

Pandemic

Marshall County

1

3

5

Albertville

-

-

-

Arab

1

3

3

Boaz

0

-

-

Douglas

-

4

4

Grant

1

3

5

Guntersville

-

-

-

Union Grove

-

-

-

Average

0.8

3.3

4.3

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