FEMA Approved LMS Plan - Tampa Bay Regional Planning Council

HAZARDS VULNERABILITY ANALYSIS MATRIX
Hazard – Natural Probability Impact Frequency Distribution
Avalanche None None N/A N/A
Coastal Erosion High Major Several a year
Dam Failure None None N/A N/A
Coastal areas and
barrier islands 1
Drought Low Minor 5-10 years County-wide
Earthquake Low Major Unknown County-wide
Extreme Heat Low Minor 5-10 years County-wide
Coastal Flooding Moderate Minor 5-10 years
Coastal areas and
barrier islands
Flooding – Rainfall Moderate Minor 5-10 years Localized 2
Freezes Low Minor 3 years County-wide
Hailstorm Low Minor 10 years Localized
Hurricane/Tropical
Storm
Minor Impact
Hurricane/Tropical
Storm
Major Impact
High Minor 2 years County-wide
High Major 50 years
Landslide None None N/A N/A
Severe Winter Storm None None N/A N/A
County-wide and
Regional
Sinkholes Moderate Minor Several a year Localized
Tornado High Major 2-3 a year Localized
Tsunami Low Major Unknown County-wide
Volcano None None N/A N/A
1 Coastal barrier islands include 13 incorporated jurisdictions and portions of St. Petersburg and the City of
Clearwater. Due to their low elevation, restricted access to the mainland and direct location along the Gulf of
Mexico, these areas are much more vulnerable to coastal flooding, erosion, severe winds, tropical storms and winter
storms. See GIS Map for jurisdictional boundaries.
2 See GIS Maps which illustrate the NFIP Flood Zones and Repetitive Loss Properties for specific area vulnerability.
1-5