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Hazard Vulnerability Matrix Worksheet
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Instructions
Hazard Vulnerability Matrix Worksheet
You completed the Hazard Vulnerability Matrix Worksheet to begin the process in developing your HVA. Over the next 2 weeks you will utilize the Matrix to complete the Hazard Vulnerability Assessment Worksheet (one worksheet for each type of hazard; manmade, technological, natural) (adapted from FEMA course IS559). This tool assists the Emergency Manager in determining the probability and severity of the hazard. The goal is to identify the hazards that pose the greatest risk to your community. Should you not have any information available regarding a hazard, make that known in the cell associated with the hazard and item of consideration.
Keep in mind that the more meticulous you are the less problems you will have when you develop your EOP in EDMG220.
Instructions
- Download the EDMG101 HVA Vulnerability.xlsx. This contains a cover sheet and 3 blank tabs to fill–Natural, Technological, and Human.
- Fill out your name and date on the cover tab.
- Copy the hazards you identified in all 3 tabs from the HVA Matrix. Rate the hazard 1-5 in each of the column categories. The vulnerability index will be calculated from your inputs.
- Add your first initial and last name to the filename. ie: AJones HVA Vulnerability.xlsx
- Submit here in the classroom.
Supporting Materials
EDMG101 HVA Vulnerability.xlsx (16 KB)
Hazard Vulnerability Assessment Worksheet-Instructions (16 KB)
Hazard Vulnerability Assessment Worksheet-example (62 KB)
Toolkit IS-559 / G-556
11
Hazard Vulnerability Assessment Spreadsheet– Completed Example
Location/Facility: Manatee County
Date Completed: 01/05/11
Completed by: EM
This table has been adapted from a Microsoft Excel spreadsheet for inclusion in this Toolkit as an example of a system your community could
implement. Scoring instructions are included after the table.
Type of Hazard Historical
Occurrence
Prob. of
Occurrence
Human
Impact
Property
Impact
Business
Impact
Mitigation
Activities
Internal
Resources
External
Resources
Total
Civil Disturbance* 1 1 1 1 1 3 3 3 0.3
Communications
Failure
3 2 3 1 3 3 3 4 2.0
Coastal Oil Spill* 1 1 1 2 2 2 1 3 1.1
Computer
Crime/Virus/
Software Failure
1 1 1 3 3 3 3 3 1.2
Drought* 1 1 2 3 3 3 2 3 1.6
Epidemic 1 2 3 3 3 3 3 4 2.0
Fire: Brush &
Forest*
2 2 2 3 2 4 4 4 1.6
Fire: Structural 1 1 3 3 3 4 4 4 1.3
Flooding: Short
Duration *
4 4 3 2 2 3 3 3 3.2
Flooding:
Freshwater*
4 4 2 2 3 3 3 3 3.2
Flooding:
Drainage*
3 3 2 2 2 4 3 3 2.2
Flooding: Coastal
Tidal*
1 2 4 4 4 4 3 4 2.6
Freeze* 1 1 1 2 2 2 2 3 1.0
Gas Leak 1 1 2 2 2 3 3 3 1.0
Hazardous
Material Spills: *
0.0
a. Roadways * 2 3 1 2 1 3 2 4 1.7
b. Air* 1 1 3 1 3 3 2 4 1.2
d. Pipeline* 1 1 2 1 2 3 3 4 0.7
e. Rail Systems* 1 1 2 1 1 2 3 4 0.6
Toolkit IS-559 / G-556
12
Type of Hazard Historical
Occurrence
Prob. of
Occurrence
Human
Impact
Property
Impact
Business
Impact
Mitigation
Activities
Internal
Resources
External
Resources
Total
Hurricanes* 1 2 4 4 4 3 3 3 2.8
Lightning 4 4 3 1 1 3 3 4 2.7
Mass Immigration* 1 1 2 1 1 3 4 4 0.3
Military Conflict 1 1 1 1 1 1 3 5 0.3
Plane/Train/Auto
Crash
2 2 2 2 2 3 3 5 1.4
Power Failure 2 2 2 1 2 4 3 5 1.1
Severe
Weather/Storms *
3 3 2 2 2 3 3 4 2.2
Sinkholes/
Subsidence*
1 1 1 1 1 1 1 1 1.0
Terrorism 1 1 3 2 2 4 3 5 0.9
Theft/Vandalism 2 2 3 3 3 4 4 4 2.0
Thunderstorm 3 3 1 1 1 3 3 4 1.6
Tornado* 2 2 3 3 2 4 4 4 1.8
Tropical Storm * 2 3 3 3 3 3 4 4 2.6
Water Pipe Break 3 3 2 2 2 3 3 3 2.3
Weapons of Mass
Destruction:
Chemical/
Biological/Nuclear
1 2 4 3 3 4 3 5 2.0
Wildfires 2 2 3 3 2 4 4 4 1.8
Workplace
Violence
1 1 2 1 2 3 3 3 0.8
Work Stoppage 1 1 2 1 3 1 1 1 1.7
Analysis Results: High Risk: Greater than 3.5 Medium Risk: 2.0 to 3.5 Low Risk: Less than 2
* Hazards of Concern as per HVA
Adapted from Manatee County Florida’s Hazard Vulnerability Analysis
ToolkitIS-559 / G-556
13
Instructions for Using the Spreadsheet
The All Hands COOP Risk Assessment tool is an Excel spreadsheet, which is designed to measure a facility’s risk from the effects of various
hazards. The tool is based on a formula that weighs the probability and severity of potential impacts against preparations in place which are
intended to minimize these impacts. Using a simple 1 to 5 scale, the probability of occurrence and the impact potential are tabulated along with
mitigation efforts and the resources available to respond to the hazard. The score is based on a formula that weighs risk heavily but provides
credit for mitigation and response and recovery resources. The higher the score, the higher the facility’s risk from the hazard.
Instructions:
1. Obtain and review a copy of the county’s Hazard Vulnerability Analysis (HVA.)
2. Add or delete hazards as required based on your local HVA analysis.
3. Using the guidelines shown below, score each hazard in all columns based on a scale of 1 to 5 with 5 being the highest.
4. Final Step: Sort the Total Column in descending order once scoring is completed.
Scoring Guidelines:
There are eight risk assessment factors contained in the spreadsheet. All factor scoring is done on a scale of 1-5. The formula contained in
the spreadsheet calculates higher scores in the occurrence and impact columns as increasing risks, while higher scores in the mitigation and
resource categories lower the overall risk score giving credit for steps taken to reduce the likely impact. Base your scoring on a “worst-case
scenario.” The following guidelines will assist you in scoring each hazard.
Historical Occurrence (Frequency):
Based on the number of occurrences: At least one occurrence every 1-4 years = 5; At least one occurrence every 5-10 years = 4; At least
one occurrence every 11-50 years = 3; At least one occurrence every 51-100 years = 2; Has not occurred, but for planning purposes should
be evaluated = 1.
Probability of Occurrence:
Based on the statistical probability of the hazard occurring in a given year. This may be obtained by scientific research or may simply be an
educated guess. The higher the probability, the higher the score. Use the following guideline in determining you score. If less than 5% score
1, if 5% to 10% score 2, if 10% to 20% score 3, if 20% to 40% score 4, and score 5 if greater than 40% probability.
Human Impact:
Score based on greatest possible impact should worst-case event occur at your facility. Consider the likely number of fatalities, injuries,
homeless, etc. Score 1 low – 5 highest.
Property Impact:
Score based on the economic costs of the event, including both direct and indirect property damage from the hazard. Smoke damage would
be a 1 while a total loss should be a 5. Score 1 low – 5 highest.
Business Impact:
Score based on factors such as service impact, lost wages, revenues, and taxes. Consider cost of relocation, permanent damage to valuable
resources, etc. Score 1 low – 5 highest.
Toolkit IS-559 / G-556
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Mitigation Activities:
Based on steps taken to mitigate the hazard such as security barriers, fire sprinklers, and redundant technical systems. The more mitigation
measures taken, the higher the score. Score 1 low – 5 highest.
Internal Resources:
Base your score on the internal response and recovery resources. High scores should be given when there are a formal on-site response
teams, organized fire brigades, floor wardens, continuity teams, or recovery teams. Score 1 low – 5 highest.
External Resources:
Base your score on the external resources that would be immediately available. This would include the local fire department. Give higher
scores if there are specialized teams available or if contractor support such as hot sites, alternate facilities, and response teams are
immediately available. Score 1 low – 5 highest.
Understanding the Scores:
Based on the weighted scoring formula hazards that are relatively high will score 3.5 or higher. The spreadsheet is programmed to change
colors based on the score as follows:
Red High Risk Greater than 3.5
Yellow Medium Risk From 2.0 to 3.5
Green Low Risk Less than 2.0
These scores are based on subjective judgments but, nonetheless, they provide a means to quickly rate the facility’s risk from various
hazards. Based on this risk scoring, priorities for increased mitigation and preparedness activities can be determined.
