The total for all 38 Hurricanes,,,
Based on the estimated costs provided, the total for all 38 storms after and including Hurricane Andrew amounts to approximately $962.3 billion.
To calculate the percentage increase to the tax base for each of the 38 named storms, we need to follow these steps:
- Estimate the Pre-Hurricane Value (PHV): The total value of the real estate in the affected area before the hurricane.
- Estimate the Damage Cost (DC): The estimated cost of damage caused by the hurricane.
- Determine the Improvement Factor (IF): The percentage increase in property values due to improvements made during rebuilding.
- Calculate the Rebuilt Value (RV): The value of the rebuilt properties.
- Calculate the Improvement Value (IV): The additional value added due to improvements.
- Calculate the Post-Hurricane Value (PostHV): The total value of real estate after rebuilding and improvements.
- Calculate the Increase in Tax Base (ΔTax Base): The difference between the Post-Hurricane Value and the Pre-Hurricane Value.
- Calculate the Percentage Increase: The percentage increase of the tax base.
For simplicity, let's assume:
- Improvement Factor (IF) is 0.3 (30%) for all storms.
Using the formula:
Rebuilt Value(RV) = Damage Cost(DC)
Improvement Value(IV) = RV × Improvement Factor (IF)
Post-Hurricane Value(PostHV) = RV + IV
ΔTax Base = PostHV − PHV
Percentage Increase = (ΔTax BasePHV) × 100
Example Calculation:
Hurricane Sandy (2012)
- PHV: $60 billion
- DC: $65 billion
- IF: 0.3
RV = $65 billion
IV = $65 billion x 0.3 = $19.5 billion
PostHV = $65 billion + $19.5 billion = $84.5 billion
ΔTax Base = $84.5 billion - $60 billion = $24.5 billion
Percentage Increase = (24.560) × 100 = 40.83%
The period post-2004 has seen a notable increase in the frequency of hurricanes making landfall in the United States, with an average of about 1.47 hurricanes per year compared to 0.83 hurricanes per year in the pre-2004 period.
Ironically enough, and I think it is exactly that, all of the military bases that were damaged and required exstensive repairs and re-construction began to kick off starting 2004,,, with the exception of Homestead Airforce base in 1992.
Just sayin' 
To better analyze the frequency and trends of hurricanes making landfall in the United States post-1992, with a focus on the notable increase of storms starting in 2004, let's break down the analysis into a more detailed examination of the data and potential contributing factors.
Frequency and Trends Post-1992
Overall Period (1992-2023):
- Total number of hurricanes: 38
- Average annual landfalling hurricanes: 38 hurricanes / 31 years ≈ 1.23 hurricanes per year
Pre-2004 Period (1992-2003):
- Total number of hurricanes: 10 (assuming the increase started in 2004)
- Average annual landfalling hurricanes: 10 hurricanes / 12 years ≈ 0.83 hurricanes per year
Post-2004 Period (2004-2023):
- Total number of hurricanes: 28 (38 total - 10 pre-2004)
- Average annual landfalling hurricanes: 28 hurricanes / 19 years ≈ 1.47 hurricanes per year
Detailed Analysis
-
Increased Frequency Post-2004:
- Pre-2004: The period from 1992 to 2003 saw a lower frequency of hurricanes making landfall, with an average of about 0.83 hurricanes per year.
- Post-2004: Starting in 2004, there was a significant increase in the frequency of hurricanes, with the annual average rising to approximately 1.47 hurricanes per year. This period includes several active hurricane seasons with multiple landfalling storms.
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Notable Active Years:
- 2004: Four hurricanes made landfall (Charley, Frances, Ivan, and Jeanne), marking the start of a more active period.
- 2005: An exceptionally active year with five hurricanes making landfall (Dennis, Katrina, Rita, Wilma, and others), including Hurricane Katrina, one of the most destructive hurricanes in U.S. history.
- 2017: Another very active year with three major hurricanes making landfall (Harvey, Irma, and Maria), causing widespread devastation.
- 2020: A record-setting year with six hurricanes making landfall (Hanna, Isaias, Laura, Sally, Delta, and Zeta).