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  Home > Experimental Tropical Cyclone Hazards Graphics > Tropical Cyclone Impact
Note: This is a summary graphic depicting the impacts expected over the full duration of the storm from this hazard. Detailed forecast products providing times, durations, and numerical forecasts associated with this hazard are provided at this WFO's web page:

Brownsville, Texas
Coastal Flooding Impact
Wind Tornadoes Inland Flooding Coastal Flooding
Impacts by County from coastal flooding for the NWS Brownsville, Texas warning area
 
None
 
Low
 
Moderate
 
High
 
Extreme
Alabama
Mobile

Florida
Jacksonville
Key West
Melbourne
Miami
Pensacola
Tallahassee
Tampa Bay

Louisiana
Lake Charles

Maryland
Baltimore/Washington

New Jersey
Mount Holly

New York
New York City/Upton

North Carolina
Newport/Morehead City
Wilmington

Pennsylvania
Philadelphia

South Carolina
Charleston

Texas
Brownsville
Corpus Christi

Virginia
Wakefield

Washington, DC
Baltimore/Washington


Coastal Flooding Impacts Definitions
Read this office's detailed Hurricane Local Statement

None Threat - No substantial threat to life and property; limited surge of less than 2 feet is expected.

Minimum Action - Evaluate personal and community disaster plans and ensure seasonal preparedness activities are complete. Do not plan on driving or walking in areas prone to tidal overwash.

Potential Impact - Significant coastal flooding is not expected; impact should be negligible. Surf conditions will be rough with minor to perhaps moderate beach erosion. Tidal overwash is possible, with the surf reaching the dune line along Padre Island. Vehicle travel along the beach is not recommended.

Low Threat - An elevated threat to life and property; the likelihood for storm surge/storm tide waters of 2 to 4 feet.

Minimum Action - Prepare for minor storm surge damage.

Potential Impact - All residents living on flood-prone shorelines can expect some water incursion into their homes. Those in typically flood prone areas may have a foot or two of water in their homes, causing minor damage. Shoreline roads may briefly close with up to 2 feet of water across, except those in flood-prone areas which could have upwards of 4 feet of water across them. Moderate beach erosion is possible, becoming likely if conditions extend through multiple high tide cycles. High surf may breach dunes in isolated locations, mainly in known vulnerable spots.

Moderate Threat - A significant threat to life and property; the likelihood for storm surge and storm tide waters of 5 to 7 feet.

Minimum Action - Prepare for moderate storm surge damage.

Potential Impact - All residents living on the shoreline will experience significant flooding during high tide. Homes will likely become uninhabitable in flood prone areas. Entire flood-prone coastal communities will be temporarily cutoff; water levels may exceed 6 feet more than a mile inland. Coastal residents of one story homes who do not evacuate will face life-threatening consequences; those in multi-story or multi-unit facilities risk being cutoff for days. Parked vehicles will be severely damaged in the flood zone. Minor damage is expected to marinas, docks, and piers. A few small craft will break away from moorings, especially in unprotected anchorages.

Conditions will be worsened by battering waves. Such waves will exacerbate property damage, including destruction of homes and washing away vehicles. Beach erosion will be substantial, and require months to clean up.

High Threat - A critical threat to life and property; the likelihood for storm surge and storm tide waters of 8 to 11 feet.

Minimum Action - Prepare for major storm surge damage.

Potential Impact - Life-threatening inundation is likely.  All neighborhoods, and possibly entire coastal communities, will be inundated during high tide. Persons not heeding evacuation orders in single family one or two story homes will face certain death. Many residences of average construction directly on the coast will be destroyed; widespread, devastating personal property damage is likely elsewhere.  A large number of small craft will break away from their moorings, especially in unprotected anchorages.

Vehicles left behind will likely be swept away. Numerous roads will be swamped; some may be washed away by the water. Entire flood-prone coastal communities will be cutoff, perhaps for more than a week; water levels may exceed 9 feet more than a mile inland. Coastal residents in multi-story facilities risk being cutoff for a week or more.

Conditions will be worsened by battering waves. Such waves will exacerbate property damage, with likely massive destruction of homes, including those of block construction.

Damage from beach erosion could take years to repair. The most recent example of a comparable surge was from Hurricane Beulah, in 1967.

Extreme Threat - An extreme threat to life and property; the likelihood for storm surge and storm tide waters greater than 11 feet.

Minimum Action - Prepare for extreme to catastrophic coastal flood damage.

Potential Impact - Entire coastal cities and towns will be inundated. Some barrier island beaches will be destroyed beyond recognition; permanent breaches may be cut. Hundreds of homes and vehicles will be washed away; larger structures such as condominiums and hotels may also be destroyed; those with poor support may collapse. Damage will be accentuated by floating debris that is driven into other structures. Extensive damage is expected to marinas, docks, and piers, with numerous small craft breaking away from their moorings.

Persons who fail to evacuate will be swept to their deaths, as will livestock in the flood zone.

Dozens, if not hundreds, of roads will be washed away; full recovery will take months, if not years. Water levels may exceed 11 feet more than a mile inland. Conditions will be worsened by battering waves. Such waves will exacerbate property damage and wash out solid road and bridge structures.

Damage from beach erosion will take years to repair. There are no recent comparative examples along and near the coast of the Lower Rio Grande Valley.

Note: In all cases, listen to local authorities and obey any evacuation orders for your coastal area. Remember, increasing wind and rising waters can cut off escape routes well in advance of landfall

Wind
Click for wind impacts for the NWS Brownsville, Texas warning area
Tornadoes
Click for tornado impacts for the NWS Brownsville, Texas warning area
Inland Flooding
Click for inland flooding impacts for the NWS Brownsville, Texas warning area
Coastal Flooding
Click for coastal flooding impacts for the NWS Brownsville, Texas warning area
None Low Moderate High Extreme
 

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     Page last Modified: 8 June, 2009 11:45 AM