Hurricane Harvey: Storm Surge Estimates
Hurricane Harvey is expected to make landfall in Texas on Friday night or early Saturday morning, forcing thousands to evacuate from their homes. The last hurricane to make landfall in the state was Hurricane Ike in 2008.
“Harvey is a very dangerous hurricane with extreme winds, storm surge, and rainfall,” Weather Underground reported. “If you live in Texas, please heed the advice of local emergency management officials, and get out immediately if you live in an evacuation zone.”
The weather station warned of a storm surge that will reach six to twelve feet. As of Friday at 9 a.m. CDT, two foot surges were already observed along the coast.
Weather Underground reported the following levels “along the coast of central Texas, arranged from north to south” Friday morning at 9 a.m.:
Port O’Connor, 1.6’
Port Lavaca, 1.5’
Copana Bay, .0.6’
Port Aransas, 1.5’
Corpus Christi, 2.1’
According to the National Oceanic and Atmospheric Administration (NOAA), a “storm surge” is defined as the following:
Storm surge is the abnormal rise in seawater level during a storm, measured as the height of the water above the normal predicted astronomical tide. The surge is caused primarily by a storm’s winds pushing water onshore. The amplitude of the storm surge at any given location depends on the orientation of the coast line with the storm track; the intensity, size, and speed of the storm; and the local bathymetry.
Hurricane Harvey could cause as many as 35 inches of rain in some areas, while many will get more than a foot, according to the National Hurricane Center. Harvey is currently a Category 2 storm, with maximum sustained winds of 100 mph, the National Weather Service reported.